深信服的一套面試題

第一類 數據推理：

題目1：393，163，67，29，9，? [問號裏應該是5，3，1，11中哪個]

題目2：1，10，26，50，82，? [問號裏應該是104，140，146，131中哪個]

題目3：22，44，68，96，128，? [問號裏應該是148，156，164，174中哪個]

題目4：6，18，?，78，126 [問號裏應該是40，41，42，44中哪個]

題目5：9，16，37，?，289 [問號裏應該是30，46，216，100中哪個]

題目6：如果2003年6月3號星期五，那麼2006年6月3號星期幾?(給出分析過程)

題目7：某雜誌刊登一段文字如下：

1 周迅的前男友竇鵬是竇唯的堂弟;

2 竇唯是王菲的前老公;

3 周迅的前男友宋寧是高原的表弟;

4 高原是竇唯的現任老婆;

5 竇唯是王菲的前老公;

6 周迅的前男友李亞鵬是王菲的現任老公;

7 周迅的前男友朴樹的音樂製作人是張亞東;

8 張亞東是王菲的'前老公竇唯的妹妹竇穎的前老公，也是王菲的音樂製作人;

9 張亞東是李亞鵬前女友瞿穎的現男友。

請問下列説法不正確的是：

A 王菲周迅是情敵關係;

B 瞿穎王菲是情敵關係;

C 竇穎周迅是情敵關係;

D 瞿穎周迅是情敵關係。

簡答題：

題目8：在程序設計中，對公共資源(如緩衝區)的操作和訪問經常需要使用鎖來進行保護，但在大併發系統中過多的鎖會導致效低很低，通常那些辦法可以儘量避免或減少鎖的使用?

題目9：有哪些方法讓一個進程僅有一個實例運行。

題目10：紅黑樹比AVL樹的優勢是什麼?

題目11：有3個紅色球，2個白色球，1個綠色球。取出2個不同顏色的球就能變成2個第三種顏色的球(比如：取出1紅球，1白球，就能變成2個綠球)。問，最少幾次變化能將所有的球都變成同一顏色，説明步驟和原因?

題目12：通常一個軟件開發過程包含哪幾個階段，你知道在個階段的質量保證措施分別是什麼嗎?

pS 還有一套thoughtworks題也來做做

題目13：編號為123456789的火車經過如下軌道從左邊入口處移到右邊出口處(每車只能進臨時軌道M一次)

-----------------------------------------------------

987654321

-------------------/-----------------------------

| |

| |

| |

| |

| |

|M|

| |

| |

| |

| |

|_|

按照從左向右的順序，下面的結果不可能是______

A 123876549

B 321987654

C 321456798

D 789651234

題目14：如果M只能容納4列車。上面選項因該選哪個______

題目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 independent

5 polymorphism allows the methods have different signature but with same name.

A 12

B 14

C 23

D 35

E 45

題目16：Function club is used to simulate guest in a club. With 0 guests initially

and 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 out

number 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 from

within the club

For 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 into

the function and check the result are correct.

a 60

b 20 50 -10

c 40 -30

d 60 -5 -10 -10 10

e 10 -20

f 30 10 10 10 -60

g 10 10 10

h 10 -10 10

A a d e g

B c d f g

C a c d h

D b d g h

E c d e f

題目17：Read the following javascript code:

someText = Web2.0;

pattern = /(w+)(d).(d)/i;

outCome = (someText);

What is outCome[0]?

Choice A: true

Choice B: false

Choice C: null

Choice D: Web

Choice E: Web2.0

題目18：Which one is Class B Address?

Choice A:

Choice B:

Choice C:

Choice D:

Choice E: None of them

題目19：Which of the choices below correctly describes the amount of time used by the following code:

n=10;

for(i=1; i<n; p="" i++)<="">

for(j=1; j

for(k=1; 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)

題目20：Which one of the following statements about buffer overflow attacking is NOT correct?

Choice A: Wrapping the vulnerable functions (such as strcpy) can help

prevent buffer overflow attacking

Choice B: Forbidding to execute code on the stack can help prevent

buffer overflow attacking

Choice C: Adding a mechanism in TLB to set the attribute of a page

non-executable can help prevent buffer overflow attacking

Choice D: C++ language has some built-in mechanisms to prevent buffer

overflow attacking

Choice E: None of above

題目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 problems

You’re assigned to solve this problem, and what are the action(s) you want to take for your first step

Choice A: Contact Government and ask for some initial funding

Choice B: Work with your colleagues to do user study to figure out more on who may be your customers

Choice 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

題目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 request

new resources to fulfill these two features

2. Reject the new features request directly so that you can ship

current release on time

3. Decrease the testing criteria to reduce the test duration so

that you can add the two new features

4. Go through all the left work items with marketing team and

other partners to punt low priority items to next release

5. Discuss this issue with stakeholders (management team,

marketing team etc) and propose to postpone current release

Choice A: 1, 3 and 4

Choice B: 2

Choice C: 1, 3 and 4

Choice D: 1, 4 and 5

Choice E: 2, 4 and 5