深信服笔试题

第一类数据推理：题目1：393，163，67，29，9，？[问号里应该是5，3，1，11中哪个]题目2：1，10，26，50，82，？[问号里应该是104，140，146，131中哪个]题目3：22，44，68，96，128，？[问号里应该是148，156，164，174中哪个]题目4：6，18，？，78，126 [问号里应该是40，41，42，44中哪个]题目5：9，16，37，？，289 [问号里应该是30，46，216，100中哪个]题目6：如果2003年6月3号星期五，那么2006年6月3号星期几？（给出分析过程）题目7：某杂志刊登一段文字如下：1 周迅的前男友窦鹏是窦唯的堂弟;2 窦唯是王菲的前老公;3 周迅的前男友宋宁是高原的表弟;4 高原是窦唯的现任老婆;5 窦唯是王菲的前老公;6 周迅的前男友李亚鹏是王菲的现任老公;7 周迅的前男友朴树的音乐制作人是张亚东;8 张亚东是王菲的前老公窦唯的妹妹窦颖的前老公，也是王菲的音乐制作人;9 张亚东是李亚鹏前女友瞿颖的现男友。

请问下列说法不正确的是：A 王菲周迅是情敌关系；B 瞿颖王菲是情敌关系；C 窦颖周迅是情敌关系;D 瞿颖周迅是情敌关系。

简答题：题目8：在程序设计中，对公共资源（如缓冲区）的操作和访问经常需要使用锁来进行保护，但在大并发系统中过多的锁会导致效低很低，通常那些办法可以尽量避免或减少锁的使用？题目9：有哪些方法让一个进程仅有一个实例运行。

题目10：红黑树比A VL树的优势是什么？题目11：有3个红色球，2个白色球，1个绿色球。

取出2个不同颜色的球就能变成2个第三种颜色的球（比如：取出1红球，1白球，就能变成2个绿球）。

问，最少几次变化能将所有的球都变成同一颜色，说明步骤和原因？题目12：通常一个软件开发过程包含哪几个阶段，你知道在个阶段的质量保证措施分别是什么吗？PS 还有一套thoughtworks题也来做做题目13：编号为123456789的火车经过如下轨道从左边入口处移到右边出口处(每车只能进临时轨道M一次)-----------------------------------------------------987654321-------------------\ /-----------------------------| || || || || ||M|| || || || ||_|按照从左向右的顺序，下面的结果不可能是______A 123876549B 321987654C 321456798D 789651234题目14：如果M只能容纳4列车。

上面选项因该选哪个______题目15：For the following description about OOP, which is right?1 An object can inherit the feature of another object；2 A sub class can contain dditional attribute or behaviors.3 Encapsulation is used to hide as MUCH as possible about the inner working of the interface.4 Encapsulation prevents the program from becoming independent5 polymorphism allows the methods have different signature but with same name.A 12B 14C 23D 35E 45题目16：Function club is used to simulate guest in a club. With 0 guests initiallyand 50 as max occupancy, when guests beyond limitation, they need to wait outside;when some guests leave the waiting list will decrease. The function will print outnumber of guests in the club and waiting outside. The function declaration as follows:void club(int x);positive x stands for guests arrived, nagative x stands for guests left fromwithin the clubFor example, club (40) prints 40,0; and then club (20) prints 50,10; and then club (-5) prints 50,5; and then club (-30) prints 25,0; and then club (-30) prints N/A; since it is impossible input.To make sure this function works as defined, we have following set of data to pass intothe function and check the result are correct.a 60b 20 50 -10c 40 -30d 60 -5 -10 -10 10e 10 -20f 30 10 10 10 -60g 10 10 10h 10 -10 10A a d e gB c d f gC a c d hD b d g hE c d e f题目17：Read the following javascript code:someText = 'Web2.0';pattern = /(\w+)(\d)\.(\d)/i;outCome = pattern.exec(someText);What is outCome[0]?Choice A: trueChoice B: falseChoice C: nullChoice D: WebChoice E: Web2.0题目18：Which one is Class B Address？Choice A: 10.10.10.1Choice B: 191.168.0.1Choice C: 192.168.0.1Choice D: 202.113.0.1Choice E: None of them题目19：Which of the choices below correctly describes the amount of time used by the following code:n=10;for(i=1; i <n; i++)for(j=1; j <n; j+=n/2)for(k=1; k <n; k=2*k)x = x +1;Choice A: Θ(n^3)Choice B: Θ(n2logn)Choice C: Θ(n(log n)2)Choice D: Θ(n log n)Choice E: Θ((logn)2)题目20：Which one of the following statements about buffer overflow attacking is NOT correct?Choice A: Wrapping the vulnerable functions (such as strcpy) can helpprevent buffer overflow attackingChoice B: Forbidding to execute code on the stack can help preventbuffer overflow attackingChoice C: Adding a mechanism in TLB to set the attribute of a pagenon-executable can help prevent buffer overflow attackingChoice D: C++ language has some built-in mechanisms to prevent bufferoverflow attackingChoice E: None of above题目21：During Beijing Olympic Games this summer, lots of people visited Beijing. However, many visitors have complains/difficulties towards trip since most hotels are very expensive or already fully booked. On the other hand, some local people are eagerly to rent out their apartments during Olympics, but don’t know how to effectively publish the information, even after Olympic, a lot of visitors and house renters are still facing the same problemsYou’re assigned to solve this problem, and what are the acti on(s) you want to take for your first stepChoice A: Contact Government and ask for some initial fundingChoice B: Work with your colleagues to do user study to figure out more on who may be your customersChoice C: Work with your Developer and Tester to build a platform to help these customers Choice D: Find some of your friends outside the company, discuss about the project details, and see if they can help you.Choice E: Nothing题目22：You are the PM of online shopping project. This project is running well and will be released to customer in two months. But the marketing team demands to add two new features in this release and emphasize these two features are critical because our major competitors already have similar features . At the same time, you found out that all developers and tester already had work items planned for next two months. What are the right possible action(s) to take to deal with this issue?1. Discuss the issue with the management team and try to requestnew resources to fulfill these two features2. Reject the new features request directly so that you can shipcurrent release on time3. Decrease the testing criteria to reduce the test duration sothat you can add the two new features4. Go through all the left work items with marketing team andother partners to punt low priority items to next release5. Discuss this issue with stakeholders (management team,marketing team etc) and propose to postpone current releaseChoice A: 1, 3 and 4Choice B: 2Choice C: 1, 3 and 4Choice D: 1, 4 and 5Choice E: 2, 4 and 5一，六道选择题（可以多选）1 char *p = "hello world"; p存储在（）指向char p[] = "hello world"; p存储在（）指向全局变量static变量分别在哪个地方？1数据段2代码段3堆4堆栈（此题可以配合同文件夹下的char.cpp）（二、例子程序这是一个前辈写的，非常详细//main.cppint a = 0; 全局初始化区char *p1; 全局未初始化区main(){int b; 栈char s[] = "abc"; 栈char *p2; 栈char *p3 = "123456"; 123456\0在常量区，p3在栈上。