思科第一学期期末试题目及答案
思科第一学期期末练习题
1请参见图示。
哪种逻辑拓扑是对图示网络的准确描述？星型环型点对点多路访问2请参见图示。
电缆 1 和电缆2 的两端分别按照特定的物理层要求接线。
表中按编号列出了每个网段以及网络技术人员在该网段不同网络组件之间已经安装的电缆。
根据给定的数据回答，哪些网段的电缆安装正确？（选择三项）网段 1网段 2网段 3网段 4网段 53在封装过程中，传输层添加什么标识符？源IP 地址和目的IP 地址源端口号和目的端口号源通道标识符和目的通道标识符4下列哪三项是CSMA/CD 的特征？（选择三项。
）监测介质中是否存在数据信号。
检测到冲突后，主机可以在随机延迟时间到期后尝试重新传输。
使用堵塞信号以确保网络中的所有主机都获悉已发生冲突。
可以将设备配置为较高的传输优先级。
仅当存在数据信号时，才传输数据。
使用令牌系统来避免冲突。
5网络管理员想要限制访问路由器的特权执行模式。
管理员应该使用哪一种口令？使能aux控制台VTY6在Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM7由于发生安全规规事件，必须更改路由器口令。
从以下配置项可获知什么信息？（选择两项）Router(config)# line vty 0 4Router(config-line)# password arj15Router(config-line)# login此配置允许用户使用调制解调器建立连接。
用户在建立连接时必须指定要连接到线路0 还是线路4。
此配置允许用户使用telnet命令连接到路由器。
此配置同一时间允许五名用户与此路由器建立连接。
该路由器上自动加密配置的口令。
8请参见图示。
下列有关计算机 A 与服务器之间电子邮件传输的说法中哪一项正确？服务器将使用HTTP 将邮件传送到计算机A。
计算机 A 将连接到服务器并使用POP 检索入站邮件。
计算机 A 上的电子邮件客户端使用SMTP 从服务器收取入站邮件并将出站邮件传送到服务器。
思科第一学期期末考试最新考题CCNA1
1Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit。
Which set of devices contains only intermediary devices？A，B，D, GA，B，E，FC，D, G，IG, H，I, J3Refer to the exhibit。
The headers added at each layer are shown。
Which layer adds the destination and source process ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data？service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full—duplex Ethernet？6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1。
思科 期末考试答案
关闭窗口考试系统考试浏览器 - ENetwork Final Exam - CCNA Exploration: Network Fundamentals (版本下面是考试的考试试题以及与题目关联的评分规则。
思科网络技术学院的内容是受到版权保护的,禁止一切未经授权的张贴,分发或共享本考试的内容.1下列哪一个 OSI 层负责管理数据段？应用层表示层会话层传输层2请参见图示。
图中所示为客户端之间发送电子邮件的过程。
以下哪一列表正确地标识了图中各编号阶段使用的组件或协议？3第 4 层报头包含帮助数据传输的哪一类信息？服务端口号主机逻辑地址设备物理地址虚拟连接标识符4哪个 OSI 层提供面向连接的可靠数据通信服务？应用层表示层会话层传输层网络层5当 OSI 模型下层执行无连接协议时，通常使用什么来确认数据已收到并请求重传丢失的数据？IPUDP以太网无连接确认面向连接的上层协议或服务6下列哪三项是 CSMA/CD 的特征？（选择三项。
）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。
介质上的所有设备均可侦听所有通信。
设备根据配置的优先级来进行通信。
发生冲突后，引起冲突的设备会优先尝试传输数据。
发生冲突时，所有设备会在一段时间内停止传输数据，该段时间的长度随机决定。
CSMA/CD 使用令牌系统来避免冲突。
7在封装过程中，传输层添加什么标识符？源 IP 地址和目的 IP 地址源 MAC 地址和目的 MAC 地址源端口号和目的端口号源通道标识符和目的通道标识符8数据链路层有哪两项功能？（选择两项）分割和记录数据。
在源主机和目的主机上运行的程序之间进行数据交换。
控制数据如何传递到介质中。
生成信号以表示每个帧中的比特。
使用帧头和帧尾封装每个数据包，以便在本地介质中进行传输。
9请参见图示。
网络中的主机 A 和 B 正在传输层交换数据段。
下列关于此交换的陈述，哪两项是正确的？（选择两项）主机 A 正在使用 FTP 向主机 B 传输文件。
思科第一学期期末考试答案
思科第一学期期末考试最新答案work Information Technology Company.2020YEAR要将数据包发送到远程网络，应使用哪种设备？访问交换机DHCP 服务器集线器路由器OSI 哪一层使用面向连接的协议来确保数据的可靠传输？应用层表示层会话层传输层请参见图示。
根据显示的 IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。
对主机 B 分配了组播地址。
主机 A 和主机 B 属于不同的网络。
对网关地址分配了广播地址。
请参见图示。
包含路由器 B 的网络遇到问题。
助理网络工程师已确定此网络的问题出在路由器什么操作可以纠正该网络问题？在接口 Serial 0/0/0 上发出clock rate命令在接口 Serial 0/0/1 上发出description命令在接口 FastEthernet 0/0 上发出ip address命令在接口 FastEthernet 0/1 上发出no shutdown命令请参见图示。
对于从主机 A 向 Web 服务器发出的网页请求，正确的目的套接字数字是什么00-08-a3-b6-ce-46198.133.219.25:80C 172.18.0.0/24 is directly connected, FastEthernet0/0在 Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM在配置路由器时，网络技术人员想要命名路由器。
输入hostname命令后，技术人员会看到下列示？Router>Router#Router(config)#Router(config-line)#下列哪三个 IPv4 地址代表子网的广播（选择三项）（主机为1）172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /27网络管理员想要限制访问路由器的特权执行模式。
(完整版)Cisco期末考试选择题题库
第1小组成员出题集：1.一台主机已经正确布线并配置有唯一的主机名和有效的IP地址。
要使主机可以远程访问资源还应配置哪两个额外的组件？ACA．子网掩码B．MAC 地址C．默认网关D．环回IP 地址E．DHCP 服务器IP 地址2.支持可变长子网掩码的路由协议有?BCDA. RIP v1B. RIP v2C. OSPFD. IS-IS3.路由器中含有许多其他计算机中常见的硬件和软件组合，包括?CA.CPU ROM 操作系统硬盘B.主板硬盘显卡CPUC.CPU ROM 内存操作系统D.主板电源光驱CPU4.哪两项说法正确描述了路由器的组件？BCA. RAM 永久存储着在启动过程中使用的配置文件B.重新启动时闪存中的内容不会丢失C. NVRAM 存储着在启动过程中使用的IOS 的备份副本D. ROM 包含最新而且最完整的IOS 版本5.下列哪些是路由器的功能？AA. 分组交换广播域分段根据逻辑编址选择最佳路径B. 分组交换网段扩展广播域分段C. 根据物理编址选择最佳路径根据逻辑编址选择最佳路径网段扩展D. 分组交换网段扩展广播域分段6.以下哪一项正确描述了路由器启动时的顺序？AA.加载bootstrap、加载IOS、应用配置B.加载bootstrap、应用配置、加载IOSC.加载IOS、加载bootstrap、应用配置、检查硬件D.检查硬件、应用配置、加载bootstrap、加载IOS7.网络管理员需要通过路由器的FastEthernet 端口直接连接两台路由器。
应用哪种电缆?CA.直通电缆B.全反电缆C.交叉电缆D.串行电缆8.以下哪些路由表项要由网络管理员手动配置?AA.静态路由B.直接路由C.动态路由D.以上说法都不正确9.RIP协议是基于?AA.UDPB.TCPC.ICMPD.Raw IP10.以下协议属于路由协议的是 ?ABCGA.RIPB.IS-ISC.OSPFD.PPPE.IPF.IPXG.BGP11．静态路由的优点包括? CA. 管理简单B. 自动更新路由C. 提高网络安全性D. 节省带宽E. 收敛速度快12．以下哪些内容是路由信息中所不包含的?AA. 源地址B. 下一跳C. 目标网络D. 路由权值13.下列关于OSPF协议的说法正确的是?ABDA. OSPF支持基于接口的报文验证B. OSPF支持到同一目的地址的多条等值路由C. OSPF是一个基于链路状态算法的边界网关路由协议D. OSPF发现的路由可以根据不同的类型而有不同的优先级14.以下哪一项正确描述了路由器启动时的顺序？A（A）加载bootstrap、加载IOS、应用配置（B）加载bootstrap、应用配置、加载IOS（C）加载IOS、加载bootstrap、应用配置、检查硬件（D）检查硬件、应用配置、加载bootstrap、加载IOS15．输入以下命令的作用是什么？BR1(config)#line vty 0 4R1(config-line)#password check123R1(config-line)#loginA.确保在进入用户执行模式之前输入口令B.设置通过Telnet连接该路由器时使用的口令C.要求在保存配置前输入check123D.创建本地用户账户以便登陆路由器或交换机16．您需要配置图中所示的串行连接，必须在sydney路由器上发出以下哪条配置命令才能与Melboume站点建立连接？（选三项）ABDA.Sydeny(config-if)#ip address 201.100.53.2 255.255.255.0B.Sydeny(config-if)#no shutdownC.Sydeny(config-if)#ip address 201.100.53.1 255.255.255.224D.Sydeny(config-if)#clock rate 56000E.Sydeny(config-if)#ip gost Melboume 201.100.53.2答案：1-5：AC,BCD,C,B,A6-10：A,C,A,A,ABCG7-15：ACD,A,ABD,A,B16：ABD注释：第1,6,11道陈宝生出题；第2,7,12道许斌斌出题；第3,8,13道曹淑婷出题；第4,9,14道彭鹏出题；第5,10,15,16道陆志翔出题。
思科第一学期期末考试最新考题CCNA1
1Refer to the exhibit。
Which Layer 2 protocol could be used inside nework A and network C？I PT CPU DPE thernet2Refer to the exhibit。
Which set of devices contains only intermediary devices?A，B，D，GA，B，E, FC, D，G，IG, H, I，J3Refer to the exhibit。
The headers added at each layer are shown。
Which layer adds the destination and source process ensure that data is delivered to the correct application？p hysical layerd ata link layern etwork layert ransport layer4The Layer 4 header contains which type of information to aid in the delivery of data？s ervice port numberh ost logical addressd evice physical addressv irtual connection identifier5Which fiber connector supports full—duplex Ethernet?6Which device should be used for routing a packet to a remote network?a ccess switchD HCP serverh ubr outer7Refer to the exhibit。
思科第一学期期末试题目及答案
主机負圭机吕请参见图示。
主机A用户向主机B用户发送了一封电子邮件。
主机A 发送了哪种类型的信息?广播组播J同播* 单播2为了将PC加入到网络环境中，应通过软件配置哪两个组件？（选择两项。
）厂MAC地址它IP地址内核外壳（shell）/ 子网掩码3哪两项是MAC地址的特征？（选择两项。
）指示网络中主机的物理位置。
厂由DHCP服务器动态分配。
/ 以十六进制格式显示。
它是物理地址。
厂是一种基于电缆的地址。
4哪种连接需要使用直通电缆？PC端口至PC端口PC端口至路由器接口*交换机端口至路由器端口C 交换机端口至交换机端口5路由器在收到包含广播MAC地址的帧时会执行什么操作？*它不会将该帧转发给另一个网络。
它会以其IP地址作为回复将该帧转发回发送主机。
匸厂它会将帧从除该帧所在接口的其它所有接口转发岀去。
它会将该帧转发回接收接口，以确保局域网中的所有主机都能收到6DNS服务器的功能是什么？将IP地址映射为MAC 地址。
*将计算机或域名转换为相应的IP地址。
三厂|管理客户端所在的域。
4接收从客户端发来的HTTP请求。
7哪两种网络故障与物理层相关？（选择两项。
）/ 电缆和接头损坏- 编址不正确一子网掩码不正确“ 组件过热厂默认网关不正确8哪一层是主机进入网络的第一个进入点?核心层* 接入层◎ 网络层C 分布层9下列哪些是私有IP地址的地址范围？（选择三项。
）10.0.0.0 至U 10.255.255.255200.100.50.0 至U 200.100.25.255150.150.0.0 至U 150.150.255.255 / 172.16.0.0 至U 172.31.255.255/ 192.168.0.0 至U 192.168.255.255127.16.0.0 至U 127.31.255.255请参见图示。
一家组织的安全策略允许员工在家里连接办公室内部网。
这是一种什么安全策略?合理使用事件处理亡网络维护* 远程访问11请参见图示。
思科第1学期期末考试答案
0 points for any other option
2
17
窗体顶端
哪种连接能为思科交换机提供加密的安全CLI会话？
控制台连接
AUX连接
Telnet连接
SSH连接
窗体底端
使用安全外壳(SSH)的CLI会话具有更强的安全性，因为SSH在传输会话数据的过程中支持强密码和加密。其他方法支持身份验证，但不支持加密。
音频会议、网页、金融交易
金融交易、音频会议、网页
窗体底端
服务质量机制促进了队列管理策略的建立，可以针对不同的应用程序数据分类执行不同的主次优先级。排队机制可以使语音数据的优先级高于交易数据，使交易数据的优先级高于Web数据。
答案
说明
最高分值
correctness of response
2 points for Option 1
0 points for any other option
2
15
窗体顶端
在正常操作中，大多数思科交换机从哪个位置运行IOS？
RAM
闪存
NVRAM
磁盘驱动器
窗体底端
当思科交换机启动时，IOS被复制到RAM中。然后交换机从RAM中运行IOS，从而增强操作性能。
答案
说明
最高分值
correctness of response
新的配置会存储在闪存中。
重新启动交换机时会加载新的配置。
当前IOS文件会替换为新配置的文件。
配置更改将被删除，原始配置将会恢复。
窗体底端
使用copy running-config startup-config命令，当前运行配置的内容会替换存储在NVRAM中的启动配置文件。设备重新启动时，将会加载NVRAM中保存的配置文件。
思科-期末考试答案
关闭窗口考试系统 考试浏览器 - ENetwork Final Exam - CCNA Exploration: Network Fundamentals (版本 4.0)下面是考试的考试试题以及与题目关联的评分规则。
思科网络技术学院的内容是受到版权保护的,禁止一切未经授权的张贴,分发或共享本考试的内容. 1下列哪一个 OSI 层负责管理数据段？应用层表示层会话层传输层标题描述最高分值 1 correctness of response2 points for Option 40 points for any other option22请参见图示。
图中所示为客户端之间发送电子邮件的过程。
以下哪一列表正确地标识了图中各编号阶段使用的组件或协议？1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA3第 4 层报头包含帮助数据传输的哪一类信息？服务端口号主机逻辑地址设备物理地址虚拟连接标识符4哪个 OSI 层提供面向连接的可靠数据通信服务？应用层表示层会话层传输层网络层5当 OSI 模型下层执行无连接协议时，通常使用什么来确认数据已收到并请求重传丢失的数据？IPUDP以太网无连接确认面向连接的上层协议或服务6下列哪三项是 CSMA/CD 的特征？（选择三项。
）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。
介质上的所有设备均可侦听所有通信。
设备根据配置的优先级来进行通信。
发生冲突后，引起冲突的设备会优先尝试传输数据。
发生冲突时，所有设备会在一段时间内停止传输数据，该段时间的长度随机决定。
CSMA/CD 使用令牌系统来避免冲突。
思科-期末考试答案
关闭窗口考试系统 考试浏览器 - ENetwork Final Exam - CCNA Exploration: Network Fundamentals (版本 4.0)下面是考试的考试试题以及与题目关联的评分规则。
思科网络技术学院的内容是受到版权保护的,禁止一切未经授权的张贴,分发或共享本考试的内容. 1下列哪一个 OSI 层负责管理数据段？应用层表示层会话层传输层标题描述最高分值 1 correctness of response2 points for Option 40 points for any other option22请参见图示。
图中所示为客户端之间发送电子邮件的过程。
以下哪一列表正确地标识了图中各编号阶段使用的组件或协议？1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA3第 4 层报头包含帮助数据传输的哪一类信息？服务端口号主机逻辑地址设备物理地址虚拟连接标识符4哪个 OSI 层提供面向连接的可靠数据通信服务？应用层表示层会话层传输层网络层5当 OSI 模型下层执行无连接协议时，通常使用什么来确认数据已收到并请求重传丢失的数据？IPUDP以太网无连接确认面向连接的上层协议或服务6下列哪三项是 CSMA/CD 的特征？（选择三项。
）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。
介质上的所有设备均可侦听所有通信。
设备根据配置的优先级来进行通信。
发生冲突后，引起冲突的设备会优先尝试传输数据。
发生冲突时，所有设备会在一段时间内停止传输数据，该段时间的长度随机决定。
CSMA/CD 使用令牌系统来避免冲突。
思科第一学期期末考试最新考题CCNA
1Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devices?A, B, D, GA, B, E, FC, D, G, IG, H, I, J3Refer to the exhibit. The headers added at each layer are shown. Which layer adds the destination and source process num ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full-duplex Ethernet?6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1. How will SW1 handle the frame?Switch SW1 will drop the frame.Switch SW1 will forward the frame to host C.Switch SW1 will flood the frame out all ports.Switch SW1 will flood the frame out all ports except port Fa0/1.8Refer to the exhibit. A network technician has made several changes to R1 since the configuration has last been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configurationserver before reloading. Which action will cause the unmodified data to be saved on the TFTP server?9Which three statements are true about network layer addressing? (Choose three.)It uniquely identifies each host.It assists in forwarding packets across internetworks.It uses a logical 32-bit IPv4 address.It is not a configurable address.It is a physical address.It identifies the host from the first part of the address.10What is the result of using the clock rate 56000 command at the serial interface of the router?The interface is configured as a DCE device.The interface timers are cleared.The FastEthernet interface is made to emulate a serial interface by assigning it a timing signal.The IP address for the serial interface is configured.11Examine the graphic with current configurations. Host A in the Clerical office failed and was replaced. Although a ping to 12 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfac York router, what is the likely cause of the problem?network card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?13Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data?application layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolution. Which twlayer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destination MAC: 0030.Destination MAC: 0030.16 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the mausers in the branch office, 28 users in manufacturing, 12 in17Which physical connector type is used for a serial V.35 connection to the CSU/DSU?18Refer to the exhibit. Which two facts can be determined about the topology? (Choose two.)Four collision domains are present.One logical network is represented.Two broadcast domains are present.Three networks are needed.Three logical address ranges are required.19What are three characteristics of CSMA/CD? (Choose three.)It monitors the media for presence of a data signal.After detecting a collision, hosts can resume transmission after a random timer has expired.A jam signal is used to ensure that all hosts are aware that a collision has occurred.Devices can be configured with a higher transmission priority.Data is transmitted only when the data signal is present.It uses a token system to avoid collisions.20Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are shown. The rou ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this probleConfigure the description at interface serial 0/0/0.Configure an IP address on interface serial 0/0/0.Remove the no shutdown command at interface serial 0/0/0Reboot the router.21Which OSI layer uses the header information to reassemble the data segments into streams?application layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to access the Internet?23Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in the exhib IP address of the primary domain name server used by the host?.3224Which memory contents will change as a result of using the Router# erase startup-config command on a router?RAMROMflashNVRAM25While configuring a router, a network technician wants to name the router. Which prompt should the technician see when e hostname command?Router>Router#Router(config)#Router(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or inte IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2. To correc which wire pairs need to be switched on one of the Ethernet cable ends?pair 1 and pair 2pair 1 and pair 3pair 2 and pair 3pair 2 and pair 428Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with its default gUse the command.Use the ipconfig command.Use the ipconfig/all command.Use the ping .254 command.29Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch?The table will remain unaffected.The switch will remove the MAC address at Fa0/19.The switch will retain the MAC address until host B is powered on again.The switch will rebuild the MAC table by assigning the FFFF.FFFF.FFFF address to port Fa0/19.30What information is contained in the header of Layer 3 to help data delivery?port numberdevice physical addressdestination host logical addressvirtual connection identifier31 A network technician is tasked with setting up a network for six users, but the users should be able to use their accounts toany of the six computers. What type of network should be used?workgroupP2P applicationspeer-to-peer networkclient-server network32Refer to the exhibit. A web browser is running on host PC1 with an IP addressThe session is established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 49152. 33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server. application will allow this request to be started?34Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an FTP clienta Telnet clienta terminal emulation programa web browser35What are two characteristics of the data link layer? (Choose two.)It segments and reorders the data.It exchanges the frames between nodes.It defines the method by which network devices place data onto the media.It manages the transfer of data between the processes that run on each host.It retrieves signals from the media and restores them to their bit representations.36 A network administrator wants to restrict access to the router privileged EXEC mode. Which password should the administrenableauxconsoleVTY37Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /2738Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to determine whic device is responsible for this failure?telnet 192.168.1.139Refer to the exhibit. Which option shows the correct topology given the configuration of Router1?40If an administrator wished to return a router to the default state, what additional step must be taken after issuing the comma start-up config?Reload the device.Issue the command copy running-config start-up config.Perform a show running-config to verify that the file was removed.Enter the interface commands to allow the device to connect to the network.41By using the ipconfig command, a network administrator determines that a workstation has the address 192.168.3.38 with the subnet mask. To what network does the workstation belong?42Which statement is true about router hostnames?A hostname should be unique on each router.A router hostname cannot contain capital letters.A router hostname is configured in privileged executive mode.A router hostname must be created before any other configurations can be added to the device.43 A user types the enable command. What task can be performed at the privileged EXEC mode?Configure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.44Refer to the exhibit. Which logical topology describes the exhibited network?starringpoint-to-pointmulti-access45Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is sho default gateway IP address should be configured at the PC to enable this access?46Which statement is true about the ICMP protocol?It is an application layer protocol.It is designed to make IP a reliable protocol.It is often filtered out of networks for security purposes.If a host does not respond to an ICMP echo request, the host is not functioning.47Refer to the exhibit. At which OSI layer is serial interface 0/0/1 experiencing problems?Layer 1Layer 2Layer 3Layer 448Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of IP address, and default gateway should be assigned to this host to allow it to function in the network?IP address:IP address:IP address:IP address:IP address:IP address:49Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correc the component or protocol used at each numbered stage of the diagram.50What is the Cisco IOS?system software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。
思科第一学期期末考试最新考题CCNA1
Refer to the exhibit. Which Layer 2 protocol could be used nework A and network C?I PT CPU DPE thernetRefer to the exhibit. Which set of devices contains onl intermediary devices?A, B, D, GA, B, E, FC, D, G, IG, H, I, JRefer to the exhibit. The headers added at each layer are shown. Which layer adds the destination and source process num ensure that data is delivered to the correct application?physical layernetwork layertransport layerThe Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifierWhich fiber connector supports full-duplex Ethernet?Which device should be used for routing a packet to a remote network?DHCP serverhubrouterRefer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1. How will SW1 handle the frame?Switch SW1 will drop the frame.Switch SW1 will forward the frame to host C.Switch SW1 will flood the frame out all ports.Switch SW1 will flood the frame out all ports except port Fa0/1.Refer to the exhibit. A network technician has made several changes to R1 since the configuration has last been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configuration server before reloading. Which action will cause the unmodified data to be saved on the TFTP server?Which three statements are true about network layer addressing? (Choose three.)It uniquely identifies each host.It assists in forwarding packets across internetworks.It uses a logical 32-bit IPv4 address.It is not a configurable address.It is a physical address.It identifies the host from the first part of the address.What is the result of using the clock rate 56000 command at the serial interface of the router?The interface is configured as a DCE device.The interface timers are cleared.The FastEthernet interface is made to emulate a serial interface by assigning it a timing signal.The IP address for the serial interface is configured.Examine the graphic with current configurations. Host A in the Clerical office failed and was replaced. Although a ping to 12 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfac York router, what is the likely cause of the problem?network card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly enteredAs network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?255.255.0.0255.255.248.0255.255.252.0255.255.254.0255.255.255.0255.255.255.128Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data?application layerpresentation layersession layertransport layerA network has grown too large for technicians to configure network addresses and hosts files for name resolution. Which tw layer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTPRefer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destination MAC: 0030.8596.DE83 Default gateway: 209.165.202.130Destination MAC: 0030.8596.DE82 Default gateway: 172.16.9.2Destination MAC: 0030.8517.44C4 Default gateway: 172.16.1.1Destination MAC: 0030.8517.44C4 Default gateway: 209.165.202.130A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the ma users in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?192.168.88.0/26 main192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.64/28 manufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 researchWhich physical connector type is used for a serial V.35 connection to the CSU/DSU?Refer to the exhibit. Which two facts can be determined about the topology? (Choose two.)Four collision domains are present.One logical network is represented.Two broadcast domains are present.Three networks are needed.Three logical address ranges are required.What are three characteristics of CSMA/CD? (Choose three.)It monitors the media for presence of a data signal.After detecting a collision, hosts can resume transmission after a random timer has expired.A jam signal is used to ensure that all hosts are aware that a collision has occurred.Devices can be configured with a higher transmission priority.Data is transmitted only when the data signal is present.It uses a token system to avoid collisions.Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are shown. The rou ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this probleConfigure the description at interface serial 0/0/0.Configure an IP address on interface serial 0/0/0.Remove the no shutdown command at interface serial 0/0/0Reboot the router.Which OSI layer uses the header information to reassemble the data segments into streams?application layernetwork layerpresentation layersession layertransport layerRefer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to access the Internet?192.168.1.191192.168.1.101192.168.1.1192.168.1.254Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in the exhib IP address of the primary domain name server used by the host?10.10.10.32192.168.1.5192.168.1.99192.168.2.100Which memory contents will change as a result of using the Router# erase startup-config command on a router?RAMROMflashNVRAMWhile configuring a router, a network technician wants to name the router. Which prompt should the technician see when e hostname command?Router>Router#Router(config)#Router(config-line)#Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or inte IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/1Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2. To correc which wire pairs need to be switched on one of the Ethernet cable ends?pair 1 and pair 2pair 1 and pair 3pair 2 and pair 3pair 2 and pair 4Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with its default gUse the ping 127.0.0.1 command.Use the ipconfig command.Use the ipconfig/all command.Use the ping 10.0.0.254 command.Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch?The table will remain unaffected.The switch will remove the MAC address at Fa0/19.The switch will retain the MAC address until host B is powered on again.The switch will rebuild the MAC table by assigning the FFFF.FFFF.FFFF address to port Fa0/19. What information is contained in the header of Layer 3 to help data delivery?port numberdevice physical addressdestination host logical addressvirtual connection identifierA network technician is tasked with setting up a network for six users, but the users should be able to use their accounts to any of the six computers. What type of network should be used?workgroupP2P applicationspeer-to-peer networkclient-server networkRefer to the exhibit. A web browser is running on host PC1 with an IP address 10.10.2.2/24. A dynamic port number of 4915 to the browser. The browser sends a request for a web page to the web server with an IP address 192.168.1.254/24. Which true?The session is established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 49152.Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server. application will allow this request to be started?Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an FTP clienta Telnet clienta terminal emulation programa web browserWhat are two characteristics of the data link layer? (Choose two.)It segments and reorders the data.It exchanges the frames between nodes.It defines the method by which network devices place data onto the media.It manages the transfer of data between the processes that run on each host.It retrieves signals from the media and restores them to their bit representations.A network administrator wants to restrict access to the router privileged EXEC mode. Which password should the administrenableauxconsoleVTYWhich three IPv4 addresses represent a broadcast for a subnet? (Choose three.)172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /27Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to determine which device is responsible for this failure?telnet 192.168.1.1ping 192.168.1.1ftp 192.168.1.1tracert 192.168.1.1Refer to the exhibit. Which option shows the correct topology given the configuration of Router1?If an administrator wished to return a router to the default state, what additional step must be taken after issuing the comma start-up config?Reload the device.Issue the command copy running-config start-up config.Perform a show running-config to verify that the file was removed.Enter the interface commands to allow the device to connect to the network.By using the ipconfig command, a network administrator determines that a workstation has the address 192.168.3.38 with the subnet mask. To what network does the workstation belong?192.168.3.8192.168.3.16192.168.3.24192.168.3.32Which statement is true about router hostnames?A hostname should be unique on each router.A router hostname cannot contain capital letters.A router hostname is configured in privileged executive mode.A router hostname must be created before any other configurations can be added to the device.A user types the enable command. What task can be performed at the privileged EXEC mode?Configure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.Refer to the exhibit. Which logical topology describes the exhibited network?starringpoint-to-pointmulti-accessRefer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is sho default gateway IP address should be configured at the PC to enable this access?10.1.192.110.1.192.210.1.192.54192.31.7.1Which statement is true about the ICMP protocol?It is an application layer protocol.It is designed to make IP a reliable protocol.It is often filtered out of networks for security purposes.If a host does not respond to an ICMP echo request, the host is not functioning.Refer to the exhibit. At which OSI layer is serial interface 0/0/1 experiencing problems?Layer 1Layer 2Layer 3Layer 4Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of IP address, and default gateway should be assigned to this host to allow it to function in the network?IP address: 10.10.9.37 Subnet mask: 255.255.255.240 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.29 Subnet mask: 255.255.255.248 Default gateway: 10.10.9.35IP address: 10.10.9.32 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 196.1.105.6IP address: 10.10.9.63 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correc the component or protocol used at each numbered stage of the diagram.1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MDA2.SMTP3.MTA4.SMTP5.MTA6.MUA7.POP8.MDA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUAWhat is the Cisco IOS?system software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。
CCNA期末考试题及答案试卷A(仅供参考)
1.下列有关网络层编址的陈述中哪三项是正确的?（选择三项。
）网络层编址使用分层式结构。
使用长度为48 位的地址。
以太网交换机可以使用它来作出转发决定。
它不支持广播。
其使用的编址方法可以识别地址的网络部分。
网络层编址可以区分每台主机。
2请参见图示。
网络中的所有设备均使用默认配置。
此拓扑中存在多少个广播域？3579113请参见图示。
主机B 已断电。
交换机的MAC 表将发生什么变化？MAC 表不会受影响。
交换机会在Fa0/19 上删除MAC 地址。
交换机会保留MAC 地址，直到主机B 再次通电。
交换机将通过为端口Fa0/19 分配地址FFF.FFFF.FFFF 来重建MAC表。
4.请参见图示。
为了使此网络中的主机接入Internet，路由器RT_A 需要提供哪种功能？地址转换DHCP 服务ftpWeb 服务器5.哪三个地址属于私有IP 地址？（选择三项。
）10.0.0.1127.0.0.1150.0.0.1172.16.0.1192.168.0.1200.100.50.16请参见图示。
电缆1 和电缆2 分别按照特定的物理层要求接线。
表中按编号列出了每个网段以及该网段中用来连接网络组件的电缆。
哪三个网段安装的电缆是正确的？（选择三项。
）网段1网段2网段3网段4网段5网段67.OSI 模型的哪两项功能在第2 层实现？（选择两项）物理编址编码路由布线介质访问控制8.请参见图示。
网络管理员想通过Modem1 从PC1 远程访问路由器的CLI。
要实现此访问，应将路由器的哪一个端口连接到Modem2？控制台端口以太网端口辅助端口串行端口9请参见图示。
某学生对5e 类电缆两端的接线方法如图所示。
结果是什么？（选择两项）电缆无法使用，必须重新接线。
该电缆适合作为全反电缆使用。
该电缆适合作为快速以太网交叉电缆使用。
该电缆适合作为千兆以太网直通电缆使用。
该电缆适合在支持Auto-MDIX 的两台100 Mbps 交换机之间使用。
思科期末考试答案
关闭窗口考试系统考试浏览器 - ENetwork Final Exam - CCNA Exploration: Network Fundamentals (版本 4、0)下面就是考试得考试试题以及与题目关联得评分规则。
思科网络技术学院得内容就是受到版权保护得,禁止一切未经授权得张贴,分发或共享本考试得内容、 1 下列哪一个 OSI 层负责管理数据段？应用层表示层会话层传输层标题描述最1correctness of response2 points for Option 4 0 points for any other option2请参见图示。
图中所示为客户端之间发送电子邮件得过程。
以下哪一列表正确地标识了图中各编号阶段使用得组件或协议？1、MUA2、MDA3、MTA4、SMTP5、MTA6、POP7、MDA8、MUA1、MUA2、POP3、MDA4、SMTP5、MTA6、MDA7、SMTP8、MUA1、MUA2、POP3、SMTP4、MDA5、MTA6、SMTP7、POP8、MUA1、MUA2、SMTP3、MTA4、SMTP5、MTA6、MDA7、POP8、MUA3第 4 层报头包含帮助数据传输得哪一类信息？服务端口号主机逻辑地址设备物理地址虚拟连接标识符4哪个 OSI 层提供面向连接得可靠数据通信服务？应用层表示层会话层传输层网络层5当 OSI 模型下层执行无连接协议时，通常使用什么来确认数据已收到并请求重传丢失得数据？IPUDP以太网无连接确认面向连接得上层协议或服务6下列哪三项就是 CSMA/CD 得特征？（选择三项。
）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。
介质上得所有设备均可侦听所有通信。
设备根据配置得优先级来进行通信。
发生冲突后，引起冲突得设备会优先尝试传输数据。
发生冲突时，所有设备会在一段时间内停止传输数据，该段时间得长度随机决定。
CSMA/CD 使用令牌系统来避免冲突。
思科CCNA第一学期期末考试答案
交叉电缆
连接
2 -
直通电缆
ቤተ መጻሕፍቲ ባይዱ连接
3 -
交叉电缆
-
忌
请参见图示。I
主机的默认网关。
主机的IP地址
主机的首选域名服务器。
主机的主页IP地址
请参见图示。对图示拓扑可以得出哪两项结论？（选择两项）
连接全反电缆连接直通电缆连接交叉电缆连接交叉电缆连接全反电缆连接交叉电缆连接直通电缆连接交叉电缆连接交叉电缆连接直通电缆连接交叉电缆连接直通电缆连接交叉电缆连接直通电缆连接交叉电缆请参见图示
下列哪个端口号范围为服务器上运行的应用程序常用的服务而保留？
0到255
0到1023
1024到49151
49152到65535
以下哪组
.0
以下哪个OSI协议层提供面向连接的可靠数据通信服务? 应用层
演示文稿
会话
传输层
n etwork
何时必须使用clock rate命令配置路由器串行接口？
当该接口充当DTE设备时
当该接口计时器已经清除时
当连接的DTE设备关闭时
当该接口充当DCE设备时
下列哪些是私有IP地址的地址范围？（选择三项。）
10.0.0
请参见图示。每条介质链路都已标记。应该使用哪种类型的电缆连接不同设备?
连接
1 -
全反电缆
连接
2 -
直通电缆
连接
3 -
交叉电缆
连接
1 -
交叉电缆
连接
2 -
全反电缆
连接
3 -
交叉电缆
连接
1 -
直通电缆
连接
2 -
交叉电缆
连接
3 -
思科第一学期期末考试最新考题CCNA1
1Refer to the exhibit。
Which Layer 2 protocol could be used inside nework A and network C？I PT CPU DPE thernet2Refer to the exhibit. Which set of devices contains only intermediary devices？A，B, D，GA, B，E, FC，D, G，IG, H, I, J3Refer to the exhibit。
The headers added at each layer are shown。
Which layer adds the destination and source process ensure that data is delivered to the correct application？p hysical layerd ata link layern etwork layert ransport layer4The Layer 4 header contains which type of information to aid in the delivery of data？s ervice port numberh ost logical addressd evice physical addressv irtual connection identifier5Which fiber connector supports full—duplex Ethernet?6Which device should be used for routing a packet to a remote network？a ccess switchD HCP serverh ubr outer7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1。
思科第一学期期末考试考题CCNA
1Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devices?A, B, D, GA, B, E, FC, D, G, IG, H, I, J3Refer to the exhibit. The headers added at each layer are shown. Which layer adds the destination and source process num ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full-duplex Ethernet?6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1. How will SW1 handle the frame?Switch SW1 will drop the frame.Switch SW1 will forward the frame to host C.Switch SW1 will flood the frame out all ports.Switch SW1 will flood the frame out all ports except port Fa0/1.8Refer to the exhibit. A network technician has made several changes to R1 since the configuration has last been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configurationserver before reloading. Which action will cause the unmodified data to be saved on the TFTP server?9Which three statements are true about network layer addressing? (Choose three.)It uniquely identifies each host.It assists in forwarding packets across internetworks.It uses a logical 32-bit IPv4 address.It is not a configurable address.It is a physical address.It identifies the host from the first part of the address.10What is the result of using the clock rate 56000 command at the serial interface of the router?The interface is configured as a DCE device.The interface timers are cleared.The FastEthernet interface is made to emulate a serial interface by assigning it a timing signal.The IP address for the serial interface is configured.11Examine the graphic with current configurations. Host A in the Clerical office failed and was replaced. Although a ping to 12 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfac York router, what is the likely cause of the problem?network card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?255.255.0.0255.255.248.0255.255.252.0255.255.254.0255.255.255.0255.255.255.12813Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data?application layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolution. Which twlayer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destination MAC: 0030.8596.DE83 Default gateway: 209.165.202.130Destination MAC: 0030.8596.DE82 Default gateway: 172.16.9.2Destination MAC: 0030.8517.44C4 Default gateway: 172.16.1.1Destination MAC: 0030.8517.44C4 Default gateway: 209.165.202.13016 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the musers in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?192.168.88.0/26 main192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.64/28 manufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 research17Which physical connector type is used for a serial V.35 connection to the CSU/DSU?18Refer to the exhibit. Which two facts can be determined about the topology? (Choose two.)Four collision domains are present.One logical network is represented.Two broadcast domains are present.Three networks are needed.Three logical address ranges are required.19What are three characteristics of CSMA/CD? (Choose three.)It monitors the media for presence of a data signal.After detecting a collision, hosts can resume transmission after a random timer has expired.A jam signal is used to ensure that all hosts are aware that a collision has occurred.Devices can be configured with a higher transmission priority.Data is transmitted only when the data signal is present.It uses a token system to avoid collisions.20Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are shown. The rou ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this probleConfigure the description at interface serial 0/0/0.Configure an IP address on interface serial 0/0/0.Remove the no shutdown command at interface serial 0/0/0Reboot the router.21Which OSI layer uses the header information to reassemble the data segments into streams?application layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to access the Internet?192.168.1.191192.168.1.101192.168.1.1192.168.1.25423Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in the exhib IP address of the primary domain name server used by the host?10.10.10.32192.168.1.5192.168.1.99192.168.2.10024Which memory contents will change as a result of using the Router# erase startup-config command on a router?RAMROMflashNVRAM25While configuring a router, a network technician wants to name the router. Which prompt should the technician see when e hostname command?Router>Router#Router(config)#Router(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or inte IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2. To correc which wire pairs need to be switched on one of the Ethernet cable ends?pair 1 and pair 2pair 1 and pair 3pair 2 and pair 3pair 2 and pair 428Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with its default gUse the ping 127.0.0.1 command.Use the ipconfig command.Use the ipconfig/all command.Use the ping 10.0.0.254 command.29Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch?The table will remain unaffected.The switch will remove the MAC address at Fa0/19.The switch will retain the MAC address until host B is powered on again.The switch will rebuild the MAC table by assigning the FFFF.FFFF.FFFF address to port Fa0/19.30What information is contained in the header of Layer 3 to help data delivery?port numberdevice physical addressdestination host logical addressvirtual connection identifier31 A network technician is tasked with setting up a network for six users, but the users should be able to use their accounts toany of the six computers. What type of network should be used?workgroupP2P applicationspeer-to-peer networkclient-server network32Refer to the exhibit. A web browser is running on host PC1 with an IP address 10.10.2.2/24. A dynamic port number of 4915 to the browser. The browser sends a request for a web page to the web server with an IP address 192.168.1.254/24. Which true?The session is established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 49152.33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server. application will allow this request to be started?34Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an FTP clienta Telnet clienta terminal emulation programa web browser35What are two characteristics of the data link layer? (Choose two.)It segments and reorders the data.It exchanges the frames between nodes.It defines the method by which network devices place data onto the media.It manages the transfer of data between the processes that run on each host.It retrieves signals from the media and restores them to their bit representations.36 A network administrator wants to restrict access to the router privileged EXEC mode. Which password should the administrenableauxconsoleVTY37Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /2738Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to determine whic device is responsible for this failure?telnet 192.168.1.1ping 192.168.1.1ftp 192.168.1.1tracert 192.168.1.139Refer to the exhibit. Which option shows the correct topology given the configuration of Router1?40If an administrator wished to return a router to the default state, what additional step must be taken after issuing the comma start-up config?Reload the device.Issue the command copy running-config start-up config.Perform a show running-config to verify that the file was removed.Enter the interface commands to allow the device to connect to the network.41By using the ipconfig command, a network administrator determines that a workstation has the address 192.168.3.38 with the subnet mask. To what network does the workstation belong?192.168.3.8192.168.3.16192.168.3.24192.168.3.3242Which statement is true about router hostnames?A hostname should be unique on each router.A router hostname cannot contain capital letters.A router hostname is configured in privileged executive mode.A router hostname must be created before any other configurations can be added to the device.43 A user types the enable command. What task can be performed at the privileged EXEC mode?Configure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.44Refer to the exhibit. Which logical topology describes the exhibited network?starringpoint-to-pointmulti-access45Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is sho default gateway IP address should be configured at the PC to enable this access?10.1.192.110.1.192.210.1.192.54192.31.7.146Which statement is true about the ICMP protocol?It is an application layer protocol.It is designed to make IP a reliable protocol.It is often filtered out of networks for security purposes.If a host does not respond to an ICMP echo request, the host is not functioning.47Refer to the exhibit. At which OSI layer is serial interface 0/0/1 experiencing problems?Layer 1Layer 2Layer 3Layer 448Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of IP address, and default gateway should be assigned to this host to allow it to function in the network?IP address: 10.10.9.37 Subnet mask: 255.255.255.240 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.29 Subnet mask: 255.255.255.248 Default gateway: 10.10.9.35IP address: 10.10.9.32 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 196.1.105.6IP address: 10.10.9.63 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.3549Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correc the component or protocol used at each numbered stage of the diagram.1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MDA2.SMTP3.MTA4.SMTP5.MTA6.MUA7.POP8.MDA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA50What is the Cisco IOS?system software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。
思科第一学期期末考试最新考题CCNA1
1Refer to the exhibit。
Which Layer 2 protocol could be used inside nework A and network C？IPTCPUDPEthernet2Refer to the exhibit。
Which set of devices contains only intermediary devices?A，B，D，GA, B, E，FC，D, G，IG，H, I，J3Refer to the exhibit。
The headers added at each layer are shown. Which layer adds the destination and source process n ensure that data is delivered to the correct application？physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full—duplex Ethernet？6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC。
cisco期末复习题(含答案)(一)培训资料
c i s c o期末复习题(含答案)(一)1一个销售代表准备从酒店使用 Internet 向公司总部发送敏感信息。
旅行前，IT 工作人员进行了必要工作以允许其安全Internet。
为该销售代表实施了什么解决方案VPN帧中继带有 CHAP 身份验证的 PPP带有 PAP 身份验证的 PPP2. 请参见图示。
网络 172.30.20.0/24 中的用户无法访问网络 192.168.0.0/23 中的任何服务器。
给定网络拓扑和 OSPF 配置，此网中存在哪两个问题？（选择两项。
）在所有三台路由器间存在路由环路。
缺少一条 network 语句。
网络 172.30.20.0 的通配符掩码不正确。
OSPF 区域配置不正确。
对于网络 192.168.0.0 来说，子网掩码 /23 无效。
3. 请参见图示。
网络管理员必须为 ISP 手动总结 POP 路由器上的所有 IP 地址。
下列哪项是正确的总结地址？192.168.0.0/22192.168.0.0/23192.168.0.0/24192.168.0.0/254. 在企业网络中实施 VLAN 有哪两点好处？（选择两项。
）避免使用第 3 层设备提供广播域分段功能允许广播数据从一个本地网络传播到另一个本地网络允许对设备进行逻辑分组而不考虑物理位置通过确保环境中无环路等措施来避免诸如广播风暴等问题5. 如果为 PPP 配置了身份验证协议，则何时对客户端或用户工作站进行身份验证？在建立链路之前在建立链路的过程中在开始配置网络层协议之前在配置完网络层协议之后6. 一家公司使用 B 类 IP 编址方案，预计需要 150 个网络。
以下哪一子网掩码适用于该网络配置？255.255.0.0255.255.240.0255.255.254.0255.255.255.0255.255.255.128255.255.255.1927. 一位销售代表正在使用无线连接进行 VoIP 通话。
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1请参见图示。
主机 A 用户向主机 B 用户发送了一封电子邮件。
主机 A 发送了哪种类型的信息？广播组播同播单播2为了将PC 加入到网络环境中，应通过软件配置哪两个组件？（选择两项。
）MAC 地址IP 地址内核外壳(shell)子网掩码3哪两项是MAC 地址的特征？（选择两项。
）指示网络中主机的物理位置。
由DHCP 服务器动态分配。
以十六进制格式显示。
是物理地址。
是一种基于电缆的地址。
4哪种连接需要使用直通电缆？PC 端口至PC 端口PC 端口至路由器接口交换机端口至路由器端口交换机端口至交换机端口5路由器在收到包含广播MAC 地址的帧时会执行什么操作？它不会将该帧转发给另一个网络。
它会以其IP 地址作为回复将该帧转发回发送主机。
它会将帧从除该帧所在接口的其它所有接口转发出去。
它会将该帧转发回接收接口，以确保局域网中的所有主机都能收到。
6DNS 服务器的功能是什么？将IP 地址映射为MAC 地址。
将计算机或域名转换为相应的IP 地址。
管理客户端所在的域。
接收从客户端发来的HTTP 请求。
7哪两种网络故障与物理层相关？（选择两项。
）电缆和接头损坏编址不正确子网掩码不正确组件过热默认网关不正确8哪一层是主机进入网络的第一个进入点？核心层接入层网络层分布层9下列哪些是私有IP 地址的地址范围？（选择三项。
）10.0.0.0 到10.255.255.255200.100.50.0 到200.100.25.255150.150.0.0 到150.150.255.255172.16.0.0 到172.31.255.255192.168.0.0 到192.168.255.255127.16.0.0 到127.31.255.25510请参见图示。
一家组织的安全策略允许员工在家里连接办公室内部网。
这是一种什么安全策略？合理使用事件处理网络维护远程访问11请参见图示。
将Linksys 集成路由器上的安全模式设置为WEP 有什么作用？WEP 安全模式能够使接入点向客户端告知它的存在。
WEP 安全模式能够加密在接入点和无线客户端之间传输的网络流量。
每次客户端与接入点建立连接时，WEP 安全模式都会生成一个动态密钥。
WEP 安全模式可用来标识WLAN。
12哪种协议用于在网络设备之间传送文件以及执行文件管理功能？DNSFTPHTMLHTTP13哪种无线技术可利用2.4 GHz 频带同时与多台设备通信，并仅限于低速、短距离通信？RFISM红外线蓝牙14路由器会使用数据包的哪一部分来确定目的网络？源IP 地址用户数据目的IP 地址控制信息目的MAC 地址15在考虑购买新的操作系统时，“总拥有成本”意味着什么？应用程序和支持成本硬件和支持成本硬件和软件成本硬件、软件和支持成本硬件、操作系统和应用程序成本请参见图示。
一个无线DHCP 客户端无法将文件上传到服务器。
根据图中显示的输出，网络技术人员首先需要采取哪两项措施以（选择两项。
）检验服务器和客户端之间的物理连接。
检验DHCP 无线客户端配置。
检验防火墙配置。
检验默认网关。
检验SSID。
17用户可以通过哪两种方式与操作系统外壳进行交互？（选择两项。
）CLIOSGUINIC内核18何为服务包？一种访问策略公司与供应商之间的协议为修复某个特定问题而编写的代码段供应商发布的补丁和更新的集合一小段专为安全问题而设计的软件19ISP 是什么？它是一个专门开发网络布线和连线标准的标准化实体。
它是一个协议，用于确定本地网络中计算机之间的通信方式。
它是一个组织，可让个人和企业连接到Internet。
它是一种网络设备，结合了多种不同网络设备的功能。
20术语”串扰“ 的含义是什么？线对之间的信号干扰信号强度随着距离的增加而减弱两条裸线接触时造成信号损坏网络设备对信号的强化21“衰减”一词在数据通信中是什么意思？信号强度随着距离的增加而减弱信号到达其目的地的时间信号从一个线对泄露到另一个线对网络设备对信号的强化22请参见图示。
假设图中显示的是连接到Linksys 集成路由器的主机的输出。
在实施自下而上的故障排除法时，首先应检查什主机的默认网关主机的IP 地址路由器的IP 地址路由器正面的链路状态LED主机的子网掩码23在WLAN 中，对等网络覆盖的区域称为什么？基本服务集(BSS)分布系统(DS)扩展服务集(ESS)独立基本服务集(IBSS)24数字位有哪两个可能的值？（选择两项。
）1AF#925当某个域内其中一台主机发送帧时，域内的所有其它主机都会收到该帧。
并且，路由器限定了该域的边界。
该域属于哪一类型广播冲突本地组播26请参见图示。
在Network Name 字段中分配名称Academy 有何作用？标识无线LAN。
将IP 地址转换为容易记忆的域名。
加密无线客户端与接入点之间的数据。
可以按名称而非按地址访问接入点配置GUI。
将一个或一组内部地址转换为外部公有地址。
27一位用户无法发送电子邮件。
对此问题进行故障排除时，网络技术人员首先检查电缆的物理连接是否完好。
该技术人员遵循的排除方法？自下而上分治法自上而下试错法28下列关于状态封包侦测的陈述，哪一项是正确的？根据源设备和目的设备的IP 地址确定能否访问。
根据源设备和目的设备的MAC 地址确定能否访问。
根据尝试连接内部主机的应用程序是否属于支持类型来决定能否访问。
根据内部主机对请求的响应是否合法来决定能否访问。
29请参见图示。
将Linksys 集成路由器上的安全模式设置为WPA 有什么作用？WPA 安全模式使用密码短语选项。
每次客户端与接入点建立连接时，WPA 安全模式都会生成一个动态密钥。
WPA 安全模式可防止攻击者拦截数据。
WPA 安全模式使用预配置的密钥来加密和解密数据。
30ISP 提供非对称传输服务的最常见原因是什么？在两个方向上以相同的速度传送大量数据承载Internet 上的服务器处理需要大量带宽的应用程序处理大型企业的应用程序参加考试 - DHomesb Final Exam - CCNA Discovery: 家庭和小型企业网络 (版本 4.0)剩余时间: 00:33:4831 IP 地址 64.100.19.14 的默认子网掩码是什么？255.0.0.0255.255.0.0255.255.255.0255.255.255.25532 哪种介质通过电子脉冲传输数字数据。
铜缆 光缆 无线无线电33 垃圾过滤软件的作用是什么？检测和删除间谍软件。
检测和删除病毒。
阻止广告窗口显示。
对传入的电子邮件消息进行检查，以确定哪些是未经请求的消息。
34如果当前操作系统受到损坏而无法正常运行，那么应该选择哪种安装方案？升级多重引导全新安装虚拟35如果客户端信息与DHCP 客户端表不一致，可以使用哪两个命令形成新的绑定？（选择两项。
）ipconfig /releaseipconfig /allipconfig /flushdnsipconfig /renewipconfig36IP 地址的哪一组成部分决定了代表主机ID 的比特位数。
默认网关主机号网络号子网掩码37哪两种传输层协议使主机能够通信和传输数据？（选择两项。
）DHCPICMPIPTCPUDP38何时使用拨号方式来连接到ISP？使用移动电话提供服务时通过有线电视网络提供高速连接时使用卫星天线时使用普通电话线路时39交叉电缆是怎样连接两台路由器的？将一台路由器的接收引脚与另一台路由器的接收引脚相连。
将一台路由器的发送引脚与另一台路由器的接收引脚相连。
断开发送引脚，只使用接收引脚。
使用相同的引脚来发送和接收。
40下列关于网络应用程序的陈述，哪两项是正确的？（选择两项。
）Microsoft Word 是一种网络应用程序。
网络应用程序可从远程计算机访问。
网络应用程序安装在仅支持网络应用程序的专用计算机上。
网络应用程序安装在网络服务器上。
网络应用程序一次只允许一台计算机访问。
41请参见图示。
假设该命令输出是连接到Linksys 集成路由器的无线DHCP 客户端的输出。
从该输出可以推断出什么结论？需要检查路由器上的DHCP 配置。
需要检查WEP 密钥或SSID。
无线连接正常。
无线网卡驱动程序或无线网卡本身需要重新安装。
42请选择正确描述DHCP 服务提供方式的三项陈述。
（选择三项。
）对于大多数ISP 而言，均由集成路由器提供IP 配置。
集成路由器可以用作DHCP 服务器和DHCP 客户端。
使用静态IP 地址的家庭PC 从DHCP 服务器获取该地址。
大多数家庭网络集成路由器直接从其ISP 接收IP 配置。
许多设备只要运行DHCP 服务软件，都可以用作DHCP 服务器。
无法找到DHCP 服务器的家庭PC 默认使用静态IP 地址192.168.1.1。
43请参见图示。
一家组织需要将使用私有IP 地址的PC 系统连接到Internet。
这家组织有多个系统需要访问Internet，但只有IP 地址。
为实现此目标，应在Linksys 集成路由器上启用哪项功能？身份验证DHCP加密防火墙NATWEP44ISP 如何获得公有IP 地址？他们自行创建这些地址。
从家庭PC 获得这些地址。
从Internet 注册管理机构获得这些地址。
从RFC 获得这些地址。
45哪种类型的计算机具有集成鼠标？台式计算机精选文库笔记本电脑大型机服务器掌上电脑。