思科第一学期期末考试最新答案
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。
(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ite期末试题及答案
思科ite期末试题及答案1. 选择题：1) 以下哪项是计算机网络的优点？A. 提供娱乐和游戏选项B. 支持快速通信和数据共享C. 执行操作系统和软件D. 扩展计算机硬件能力答案：B2) 在计算机网络中，什么是IP地址？A. 网络设备的唯一标识符B. 用于在浏览器中访问网站的URLC. 一种用户认证方式D. 用于加密和解密数据的密码答案：A3) 哪项是正确的关于局域网(LAN)和广域网(WAN)的描述？A. LAN覆盖的范围比WAN更小B. 只有WAN可以连接多个计算机C. 只有LAN支持无线连接D. WAN速度比LAN更快答案：A4) 在组成计算机网络的各种设备中，以下哪个设备可以连接到LAN并提供无线网络连接？A. 路由器B. 集线器C. 交换机D. 适配器答案：A5) 以下哪项是帮助保护计算机和网络安全的措施？A. 使用相同的密码B. 共享敏感信息C. 定期更新防病毒软件D. 下载可疑文件答案：C2. 填空题：1) 在 OSI 模型中，物理层的作用是__________。
答案：传输比特流2) 在计算机网络中，HTTP代表着__________。
答案：超文本传输协议3) 在TCP/IP模型中，IP地址是由__________位二进制数字组成的。
答案：32位4) 在计算机网络中，LAN表示__________。
答案：局域网5) 在网络配置中，DNS代表__________。
答案：域名系统3. 简答题：1) 请简单描述计算机网络的定义以及它的优点。
答案：计算机网络是指通过物理或无线电连接将多台计算机连接在一起的技术。
它可以提供快速通信和数据共享，使得信息在计算机之间可以更加方便地传输和访问。
它还可以提供广泛的资源共享，如打印机、硬盘等。
2) 请简单解释什么是TCP/IP协议？答案：TCP/IP是一组互联网通信协议的集合，它是计算机网络中最常用的协议之一。
它包括了TCP（传输控制协议）和IP（互联网协议）两个部分。
Cisco企业网络、安全和自动化期末考试答案
Cisco企业⽹络、安全和⾃动化期末考试答案1 ⽤户接到⼀个电话，对⽅声称⾃⼰是 IT 服务代表，然后要求⽤户确认⽤户名和⼝令供审计之⽤。
这个电话代表了哪⼀种安全威胁？垃圾邮件匿名键盘记录社会⼯程DDoS2 如果⾮对称算法使⽤公钥加密数据，则使⽤什么来解密数据？私钥其他公钥DH数字证书3 在安全攻击中，僵⼫以哪种⽅式使⽤？它们探查⼀组机器的开放端⼝，以了解正在运⾏哪些服务。
它们是执⾏ DDoS 攻击的受感染的机器。
它们以特定的个⼈为⽬标以获取公司或个⼈信息。
它们是恶意形成的代码段，⽤于取代合法应⽤。
4 下列哪种类型的⿊客会被激发去抗议政治和社会问题？脚本⼩⼦激进⿊客漏洞经纪⼈⽹络犯罪分⼦5 通过实施 MD5 或 SHA 散列⽣成算法确保了哪种安全通信要求？保密性认证完整性不可否认性6 IPS 具有哪项功能？可阻⽌恶意数据包。
对时延没有影响。
主要侧重于识别可能发⽣的事件。
在离线模式下部署。
7请参见图⽰。
很多员⼯会在办公电脑上访问社交媒体，浪费了⼯作时间。
公司希望能够拒绝这种访问。
在这种情况下，最佳的ACL类型是什么，应⽤位置是哪⾥？在R1 G0/0和G0/1接⼝的⼊站⽅向上应⽤扩展ACL在R2连接互联⽹的WAN接⼝的⼊站⽅向上应⽤标准ACL在R1 G0/0接⼝的⼊站⽅向上应⽤标准ACL在R1 G0/0接⼝的出站⽅向上应⽤标准ACL8 以下哪个术语描述了这类⼈：他们是不道德的罪犯，他们破坏计算机或⽹络安全完全是为了个⼈利益，或者纯粹出于恶意？脚本⼩⼦漏洞经纪⼈激进⿊客⿊帽⿊客9请参见图⽰。
在标准 ACL 中，哪⼀命令将⽤于仅允许连接⾄ R2 G0/0 接⼝的⽹络上设备访问连接⾄ R1 的⽹络？access-list 1 permit 192.168.10.96 0.0.0.31access-list 1 permit 192.168.10.0 0.0.0.63access-list 1 permit 192.168.10.0 0.0.0.255access-list 1 permit 192.168.10.128 0.0.0.6310请参见图⽰。
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。
思科期末考试题库和答案
思科期末考试题库和答案一、单选题1. 在思科网络技术中，OSI模型的第4层是什么？A. 传输层B. 会话层C. 表示层D. 应用层答案：A2. 以下哪个协议是用于在网络层进行路由选择的？A. TCPB. IPC. UDPD. FTP答案：B3. 动态主机配置协议（DHCP）工作在OSI模型的哪一层？A. 应用层B. 传输层C. 网络层D. 数据链路层答案：D4. 以下哪个命令用于在思科设备上查看当前配置？A. show running-configB. show startup-configC. show interface statusD. show ip route答案：A5. 在思科设备上，哪个命令用于保存当前的配置到启动配置中？A. copy running-config startup-configB. copy startup-config running-configC. saveD. write答案：A二、多选题6. 以下哪些是思科交换机上常用的端口类型？A. FastEthernetB. GigabitEthernetC. TenGigabitEthernetD. Serial答案：A, B, C, D7. 在思科设备上，以下哪些命令用于管理VLAN？A. vlan databaseB. enableC. configure terminalD. exit答案：A, C8. 以下哪些是思科路由器上常用的接口类型？A. FastEthernetB. GigabitEthernetC. SerialD. ATM答案：A, B, C, D9. 以下哪些是思科设备上用于查看网络状态的命令？A. show ip interface briefB. show running-configC. show interface statusD. ping答案：A, C, D10. 在思科设备上，以下哪些命令用于配置静态路由？A. ip routeB. ip routingC. routeD. configure terminal答案：A, D三、判断题11. 思科的IOS（Internetworking Operating System）是运行在所有思科设备上的软件。
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。
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
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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
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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。
思科网院第一学期1-6单元部分试题及答案
第一单元1、应用程序可以分为通用软件和行业专用软件。
下列哪两项属于行业专用软件？（选择两项。
）??教育工具演示文稿电子表格字处理医疗实践管理软件数据库管理2、字处理软件的哪种特征表明它是本地应用程序？该应用程序可以在不同用户之间共享。
该软件存储在本地硬盘上。
该软件可以通过网页访问。
该软件能够处理文本和图片。
3、下列哪三个术语描述了计算机的不同类型？（选择三项。
）操作系统网络笔记本电脑台式计算机Windows大型机4、将笔记本电脑连接到扩展坞有哪两项优点？（选择两项）增强了机动性。
减少了所需电力。
可以使用外部显视器。
可以使用更多无线安全选件。
可以使用备用的连接选件。
5、为何服务器通常配备重复或冗余部件？服务器需要更高功率，因此需要更多组件。
服务器要全天候可供访问。
服务器可设计为独立塔式或机架安装式。
网络标准要求服务器配备重复部件。
6、通常用什么单位来表示计算机的处理速度？位像素赫兹字节7、购买预先组装好的计算机有哪两项优点？（选择两项。
）成本通常比较低可以精确指定组件组装的等待期更长足以执行大多数一般的应用程序适合有特殊需求的客户8、某用户计划在一台计算机上同时运行多个应用程序。
哪个计算机组件是完成此任务的关键？RAMNIC显卡声卡存储设备9、哪种适配卡可让计算机系统与本地网络中的其它系统交换信息？显卡声卡调制解调器卡网络接口卡10、服务器、台式计算机、便携式计算机使用的主要存储设备是什么？磁带驱动器硬盘光盘驱动器 (DVD)软盘驱动器11、哪个组件用于消除来自电源线的高压尖峰，使其不损坏计算机系统？CPU电涌抑制器主板硬盘12、 UPS 可以提供哪两项浪涌保护器所不具备的功能？（选择两项）保护计算机不受电压浪涌的损坏。
用内部电池提供备用电源。
保护计算机不受突然电压尖峰的损坏。
让用户有时间给电力公司打电话。
在电源出现故障时，为用户提供安全关机的时间。
通过墙上插座供电的发电机提供备用电源13、哪个计算机组件是计算机系统的神经中枢，并且负责处理机器中的所有数据？RAMCPU显卡声卡操作系统14、可以通过什么来防止静电放电 (ESD)？干燥、没有湿气的环境铺有地毯的地板接地腕带整洁的工作空间15、哪两种设备可能存在危险电压电平，因此未经专门的操作培训不得打开机体？（选择两项）鼠标打印机显示器键盘硬盘电源16、在当今较新的操作系统中，安装组件后，默认将如何分配系统资源？通过操作系统手动分配由管理员手动分配由组件静态分配给预设置的资源在组件和操作系统之间动态分配17、一位用户反映说，上周为某 PC 正确安装了一台外围设备，但自从今天启动 PC 后，该设备就一直无法正常工作。
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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行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。
管理员应该使用哪一种口令？使能aux控制台VTY请参见图示。
主机 A 上需要安装什么才能支持网络技术人员创建Router1 的初始配置？FTP 客户端Telnet 客户端终端仿真程序Web 浏览器请参见图示。
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第3 层头部包含的哪一项信息可帮助数据传输？端口号设备物理地址目的主机逻辑地址虚拟连接标识符管理员对设备做出了更改，但更改没有达到预期效果。
管理员可以采取什么措施来恢复NVRAM 中保存的配置？发出erase flash命令。
发出reload命令并对随后的提示回答no。
发出erase start-up config命令。
发出copy running-config start-up config命令。
哪些类型的介质不受EMI 和RFI 影响？（选择两项）10 Base-T10 Base-210 Base-5100 Base-FX100 Base TX1000 Base LX请参见图示。
路由器已启用NAT 功能以供PC 访问Internet，但是PC 仍然无法访问Internet。
为了让PC 能够访问Internet，应将哪一项IP 地址更改为209.165.201.1？192.168.1.191192.168.1.101192.168.1.1192.168.1.254作为网络管理员，假设IP 地址为172.30.0.0，能够支持510 台主机的子网掩码是什么？255.255.0.0255.255.248.0255.255.252.0255.255.254.0255.255.255.0255.255.255.128请参见图示。
网络管理员使用安全的连接从PC1 远程访问RouterB 的CLI。
下列有关此连接的陈述中哪一项正确？Telnet 服务器进程在PC1 上运行。
仅对Telnet 用户名和密码的交换进行加密。
主机向RouterA 发送请求检索数据的GET 请求。
SSH 服务用于将PC1 连接到RouterB。
请参见图示。
图中所示路由表所属的PC 已正确配置。
IP 地址192.168.1.254 属于哪一个网络设备或接口？PC交换机路由器接口fa0/0路由器接口fa0/1请参见图示。
主机已与交换机 2 断开连接并连接到交换机1。
为了让该主机在网络中正常工作，应该为其分配怎样的IP 地址、子网掩码和默认网关？IP 地址:10.10.9.37，子网掩码：255,255,255,240，默认网关：10.10.9.35IP 地址:10.10.9.37，子网掩码：255.255.255.224，默认网关：10.10.9.35IP 地址:10.10.9.29，子网掩码：255,255,255,248，默认网关：10.10.9.35IP 地址:10.10.9.32，子网掩码：255.255.255.224，默认网关：10.10.9.35IP 地址:10.10.9.37，子网掩码：255.255.255.224，默认网关：196.1.105.6IP 地址:10.10.9.63，子网掩码：255.255.255.224，默认网关：10.10.9.35请参见图示。
主机 A 要访问Internet。
哪项第 2 层地址和第 3 层地址的组合可以让主机A 实现此访问？目的MAC：0030.8596.DE83，默认网关：209.165.202.130目的MAC：0030.8596.DE82，默认网关：172.16.9.2目的MAC：0030.8517.44C4，默认网关：172.16.1.1目的MAC：0030.8517.44C4，默认网关：209.165.202.130请参见图示。
下列哪两项陈述描述了报头中代表的信息？（选择两项）这是服务器响应。
使用的是UDP 协议。
目的端口表示Telnet 会话。
返回数据段将包含源端口23。
此会话的客户端发起的下一次会话将使用源端口号13358。
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？357911请参见图示。
网络技术人员要将主机 A 连接到Cisco 交换机的控制台以开始进行配置。
此连接需要使用哪一类电缆？直通电缆交叉电缆全反电缆串行电缆请参见图示。
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）（同性质的设备间使用交叉电缆，不同性能的设备之间用直通电缆）网段 1网段 2网段 3网段 4网段 5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。
请参见图示。
用记号来表示每条介质链路。
用来连接不同设备的正确电缆类型是什么？连接 1 - 全反电缆，连接 2 - 直通电缆，连接 3 - 交叉电缆连接 1 - 直通电缆，连接 2 - 交叉电缆，连接 3 - 全反电缆连接 1 - 交叉电缆，连接 2 - 全反电缆，连接 3 - 直通电缆连接 1 - 交叉电缆，连接 2 - 直通电缆，连接 3 - 全反电缆连接 1 - 直通电缆，连接 2 - 直通电缆，连接 3 - 直通电缆请参见图示。
网络技术人员使用图中所示的连接将主机 A 连接到路由器以创建初始配置。
下列有关此连接的陈述中哪一项正确？该连接端接在路由器的以太网端口上。
该连接提供对控制台的带外访问。
该连接端接在路由器的串行接口上。
该连接要求主机A 使用Telnet 客户端来访问路由器。
下列有关在Cisco IOS 设备上运行配置文件的陈述，哪一项是正确的？修改配置文件会立即对设备的操作造成影响。
配置文件存储在NVRAM 中。
可使用erase running-config命令删除配置文件。
路由器重新启动时会自动保存配置文件。
下列哪三项陈述说明了传输层协议的特征？（选择三项）应用层协议使用TCP 端口号和UDP 端口号。
TCP 使用端口号提供可靠的IP 数据包传输。
UDP 使用窗口和确认获得可靠的数据传输。
TCP 使用窗口和定序提供可靠的数据传输。
TCP 是面向连接的协议。
UDP 是无连接协议。
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请参见图示。
路由器的路由表如图所示。
该路由器收到以192.168.9.4 为目的地址的数据包。
它将如何处理该数据包？它会丢弃数据包。
它会通过FastEthernet 0/1 转发该数据包。
它会将数据包转发到下一跳地址。
它会将数据包转发到172.16.2.0。
传输层如何让主机能同时针对不同应用程序维护多个通信流？使用错误控制机制。
使用只适合多个并发传输的无连接协议。
使用多个第 2 层源地址。
使用多个端口。
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。
请参见图示。
对图示拓扑可以得出哪两项结论？（选择两项）存在四个冲突域。
代表一个逻辑网络。
存在两个广播域。
需要三个网络。
需要三个逻辑地址范围。
请参见图示。
根据图中提供的配置，下列哪种说法正确？主机 A 的IP 地址已正确分配到本地网卡。
主机 A 只可向本地网络中的所有主机发送数据包。
主机 A 可向本地网络和远程网络中的任何主机发送数据包。
主机 A 可成功ping通默认网关地址192.168.1.1。
某主机正在网络上传输视频。
传输层如何做到让该主机在传输视频的同时使用多个应用程序来传输其它数据？使用错误控制机制。
使用只适合多个并发传输的无连接协议。
使用多个第 2 层源地址。
使用多个端口号。
请参见图示。
某用户想要查看当前的配置。
图中所示为ipconfig/all命令的输出。
从此输出可以得到哪三项结论？（选择三项）该IP 地址是从DHCP 服务器获取的。
该PC 无法与其它网络通信。
该网络可容纳14 台主机。
该计算机地址的前缀是/25。
该IP 地址可以在Internet 上路由。