data center interview questions

;Var y = new cls2;Alert (X. );Alert (Y. ); Question 3Function cls1 (){This. A = 1;}Function cls2 (){}VaR x = new cls2;Cls2.prototype. A = 1;Var y = new cls2;Alert (X. );Alert (Y. ); Question 4Function cls1 (){This. A = 1;}Function cls2 (){}VaR x = new cls2;Cls2.prototype. A = 1;Var y = new cls2;Alert (X. );Alert (Y. ); Question 5String. Prototype. Self = function (){Return this;}VaR S = "S ";Alert ("S". Self () = "S ")Alert (S. Self () = s)Alert ("S" = "S ")Alert ("S". Self () = "S". Self ())Ale

Interview questions: Talk about how to optimize MySQL database query, MySQL database 1. Optimize data type There are several types of data in MySQL, and if you are a DBA, you are rigorously checking the data types according to the principles of optimization, but developers

Embedded linux engineers interview questions C language basics-general Linux technology-Linux programming and kernel information, the following is a detailed description. I saw an embedded interview on the Internet and suddenly felt very small ...... In the future, I will post my answers one after another. Of course, some of my answers may not be accurate, and th

Yesterday interviewed 2 companies, plus last month 28th interview topics, there are several questions did not do right, summed up here to avoid the next time to make the same mistake. First,General Questions: 1. -1,2,7,28, 126 solution: 63 Their law is: 0 three times the square minus 1=-11 three times the square plus 1=22 three 1=73 of three square plus 1=284 thr

IOS development Advanced Interview Questions-Role of dealloc under ARC,-arcdealloc In the MRC era, we need to do a lot in dealloc, such as releasing objects; Now we have entered the ARC era. The system has helped us with the release of common objects; Can I rest assured? What should we do under ARC? Opinion: Under ARC, the system can help us release this object and its contained objects; However, some thin

Interview Questions C # memory management and garbage collectionWhat do you say about C # 's memory management?I remember this sentence for more than a week, since the last northeast Normal University interview, specific please see There are two types of resources in. NET: Managed and unmanaged, and since there are two types of resources, there are two ways of re

: This article mainly introduces interview questions: I will talk about how to optimize MYSQL database queries. if you are interested in PHP tutorials, please refer to it. 1. Optimize Data types There are multiple data types in MySQL. if you are a DBA, you are strictly checking the

javascript is not only a low threshold, but also an interesting, powerful and very important language. People from all walks of life find their most confusing choice is the Javasscript programming language. Because of the variety of backgrounds, not everyone has a broad understanding of JavaScript and its rationale. Usually carcass, unless you go to a job interview to think about why or what to do, otherwise JavaScript is just the content of your work

Questions and answers about Linux Command interview Linux Command lines, as well as the use of Linux commands for Linuxshell interaction, are the most attractive part of Linux and one of the most common topics in the interview. In this article, we will ask 10 important questions during the

//generate an instance when used, improve the efficiency! if(instance==NULL) instance=NewSingleton ();returninstance;}} Other forms: Defines a class whose constructors are private, and all methods are static. The first form is generally considered to be more secure .33rd Hashtable and HashMapHashtable inherits from the dictionary class, and HashMap is an implementation of the map interface introduced by Java1.2 HashMap allow NULL as a entry key or value, And Hashtable not allow there is, HashMap

A while back, I posted a list of ASP. Interview Questions. Conventional wisdom was split, with an on half the folks saying I was nuts and that it is a list of trivia. The others said basically "Ya, those is good. The I ' d probably has a few up. To me, that's the right response.Certainly I wasn ' t trying to boil all of the. NET software development down to a few simple "trivia"

/requests, and improve program performance Cache usage Steps (1) Use the data, first to the cache to view, and then remove the use (2) no data in the cache, calculate/request, and then cache the Data. Cache application: Fibonacci Recursive functions Fibonacci-cut Sequence Optimization "cache" Script> varCache= {}; functi

[Finishing]c#. NET common interview questions with Answer (ZT) A friend who is looking for a job may use it. I am not too understand resistance, last week a friend came to me to find a job he tidied up, so I only responsible for posts, the answer to the question to you. --------1. What does object-oriented thinking mainly include? 1 Inherit polymorphic Package//--------2. What is a user Control 2 user contr

Today, I read the beauty of programming, and I saw the handsome question. After reading the answer, I felt that it was really fierce to go to Microsoft, I always like to do some bit-level operations on the interview questions, so I just want to summarize it for the sake of time. Hope you can help others. Now everyone is interested in doing something on the shelf.Article, From the simplest shift operations

Reverse merge of linked list related Interview Questions The linked list is the most basic data structure. Interviewers often use the linked list to evaluate the basic abilities of the interviewee. In addition, the linked list-related operations are relatively simple and suitable for investigating the ability to write code. Linked List operations cannot be separa

JavaScript Interview Requirements: the following questions must be selected from one to four, three questions, implemented using native code, cannot be usedIn any framework, the fifth question is selected.1. display images in a fixed area of the page1. Each time you click the right arrow, the image area will scroll to the left and vice versa;2. When an image is f

From: http://wxdlut.blog.163.com/blog/static/128770158200992373211377/ Programmers must know: C/C ++ interview questions (7) 1. Introduce STL and explain in detail how STL implements vector. Answer: STL (Standard Template Library. It consists of container algorithm iterator. STL has the following advantages: it can easily search data or Sort

,min(nn.year) BeginYear,max(nn.year)+1 EndYear from (select n2.team,n2.year from (select * from nba) n1 join(select * from nba) n2on n1.team=n2.teamwhere n1.year=n2.year+1) nngroup by (nn.year-rownum)order by BeginYear; The final execution result is as follows: 4. Summary In the face of similar interview questions or questions, although there are not many knowl

This article is reproduced. I hope my friend has a good interview question to study ......1. Check whether the process of Android dvm is the same concept as that of Linux.DVM refers to the Virtual Machine of dalivk. Every Android application runs in its own process and has an independent Dalvik Virtual Machine instance. Every DVM is a process in Linux, so it can be considered the same concept. 2. What is the role of the SIM card EF file?Sim card file

This article is reproduced. I hope my friend has a good interview question to study ...... 1. Check whether the process of Android DVM is the same concept as that of Linux. DVM refers to the Virtual Machine of dalivk. Every android application runs in its own process and has an independent Dalvik Virtual Machine instance. Every DVM is a process in Linux, so it can be considered the same concept. 2. What is the role of the SIM card EF file?SIM card fi