common help desk interview questions

The answers to common written or interview questions compiled by one student are for reference only and do not represent my opinion. 1. It is known that the prototype of the strcpy function is:Char * strcpy (char * strdest, const char * strsrc );Here, strdest is the destination string and strsrc is the source string. Do not call the string library function of

process is more standardized, the amount of manual encoding is reduced, and the encoding efficiency is improved. At the same time, when data is updated, sometimes the component is not required, but it also needs to be re-drawn, which affects the efficiency. Generally, they are used only when building complex projects with multiple interactions and data streams. What are the disadvantages of redux? The data required by a component must be transmitted by the parent component, but cannot be dire

://www.baidu.com/s?wd=test on the specified server 61.135.169.121, and the time-out for the access is 20 seconds: Curl–connect-timeout Http://61.135.169.121/s?wd=test 9. With the netstat command with other shell commands, according to the source IP statistics all the established status links to 80 ports, the output is similar (the first column number of connections, the second column IP): [Email protected]~]# Netstat-an|grep establishedTCP 0 139.224.199.85:22 101.47.33.86:

--; Swap (Num[i], num[j]);2. Since j is the first element greater than I, after the Exchange, II starts to the end, still satisfies the descending order, the direct reverse gets the increment arrangement. Note that the flip starts from II.After the exchange, it is still in descending order. Reverse (Num.begin () + II, Num.end ());3. Simple memory steps Looking forward from the end of the end to two adjacent elements, both satisfying I If no such pair of elements are

Source: Old Money high-availability architectureGuidance: Redis-related knowledge is a frequently asked topic during a programmer's interview. As a veteran technical interviewer who has hit hundreds of thousands of people in the Internet technology industry, the author summarizes the frequently asked questions in the interview process. is well worth reading. Auth

Difference between Forward and Redirect in common JAVA interview questions, forwardredirect The user sends an HTTP request to the server, which may be returned to the user after being processed by multiple information resources. Each information resource uses the request forwarding mechanism to forward requests to each other, however, the user does not feel reque

Original reference Https://mp.weixin.qq.com/s/mCVL6qI33XeTg4YGIKt-JQ1. Event BrokerAdds an event to the parent element, using the event bubbling principle, to get child elements based on E.targetLet Parentbox = document.getElementById (' Parentbox ');Parentbox.addeventlistener (' click ', Function (e) {if (e.target e.target.nodename = = = ' LI ') {Let item = E.target;Console.log (item);}})2. Using closures in loopsvar arr = [1,2,3,4,5];for (var i=0; iSetTimeout (function () {Console.log (i)},10

1. Jesus has 13 disciples, one of whom is a traitor to betray Jesus, please use the rule of exclusion to find the traitor: 13 people sitting around, starting from the first person to cycle off, count to three exclude, the last remaining person is a traitorint people[13] = {1,2,3,4,5,6,7,8,9,10,11,12,13};int count = 0;//is used to record a datagramint number = 13;//Records aliveint i = 0;//record number of people are on the count.while (number > 1) {if (people[i]! = 0) {count++; If a[i] is not re

1. String S1 = ' 123 ';String s2 = new string ();2. The difference between two ways of implementing multithreadingInheriting the thread and implementing the Runnable interface3. Single-column design mode What's the difference between lazy and a hungry man? * * *Lazy style Features: lazy loading. Delayed loading in multi-threaded security problems, through the addition of synchronization to solve, plus synchronization efficiency is low, with a double-judge method to solve the low efficiency. The

as 2:32 below, indicates how long the system has been running since the last start.[[email protected] DOWNLOAD] #uptime02:05:22 up 2:32, 2 users, Load average:0.00, 0.00, 0.0014. How to add route in Linux systemHost routingRoute add-host 192.168.197.100 Dev eth0Gateway RoutingRoute add default GW 192.168.197.1Network routingRoute ad-net 192.168.1.0 netmask 255.255.255.0 deveth1Route ad-net 192.168.1.0 netmask 255.255.255.0 gw192.168.197.115. The contents of the known Test.txt file are as follow

. Synchronize the data between the main library and the library, and then repeat the action again13. Use a single command to turn off all services except SSHD, Crond, network, Rsyslog services (no power-on automatic)Method One:[[Email protected]~]# for name in ' Chkconfig–list|grep 3:on|awk ' {print '} ' |grep-ev "sshd|crond|rsyslog|network" ';d och Kconfig $name Off;done[Email protected]~]# chkconfig–list|grep 3:onCrond 0:off 1:off 2:on 3:on 4:on 5:on 6:offNetwork 0:off 1:off 2:on 3:on 4:on 5:o

There are a lot of skills to ask questions during the interview, and it is also important to ask questions. Here is a simple list of frequently asked questions: L why do I want to leave my current job? L have you ever heard of our company? What is your first impression of the company? L where do you find it diff

Several common js interview questions1. About the number type conversion in "+" and "-" Var a = ''+ 3; // try to convert 3 to the string var B = 4; console. log (typeof a); console. log (a + B); console. log (a-B); // try to convert the string to numbervar foo = "11" + 2 + "1 "; // Add a string '1' and subtract a string '1. log (foo); console. log (typeof foo ); 2. De-duplication of js Arrays Easy to think

not carry and 1001 = 9 Carry 0000 = 0 When carry is 0, do not carry is 9, that is, the sum of A + B. The code is not hard to write: // Two common bit operation questions without subtraction, multiplication, division operator to calculate the sum of the two and a = B * 3 // http://blog.csdn.net/morewindows/article/details/8710737//By morewindows (http://blog.csdn.net/MoreWindows) # include The running res

Common SQL Server test questions (1) Question 1 Problem description: create three tables for managing job business training information: S (s #, Sn, SD, SA) s #, Sn, SD, SA stands for student ID, Student name, organization, student age C (C #, CN) C #, CN stands for course number, course name SC (s #, CN respectively #, C #, g) s #, C #, and g respectively represent the student ID, the number of the electiv

(the header field used by the response message)Accept-ranges: Acceptable byte rangeLocation: The URI to which the client is redirectedInstallation information for the SERVER:HTTP serverD, the Entity header field (the header field used by the entity portion of the request message and the response message)Allow: The HTTP method supported by the resourceContent-type: Type of entity main classContent-encoding: The encoding method that the entity body applies ToContent-language: The natural language

Common English interviewProblem Common English interviewProblem Personal Profile: 1. cocould you introduce yourself in English? 2. What are your greastest strengths? 3. What are your greastest weaknesses? 4. How do you spend your spare time? 5. How wocould your friends describe you? 6. What else shocould I know about you? Job application: 1. Why are you interested in working for our company? 2. Why are y

mixture will put sugar in the beaker, ask you which two beaker contains many impurities? Tip: Same. Assuming that the impurity is not equal, then the impurity is put into the original cup, then the weight of the content in the cup will change, unreasonable. Problem 5:Provide you with two files a and B, each storing 5 billion URLs, each occupying 64 bytes, and the memory limit is 4 GB, so that you can find the common URLs of files a and B. Me

character data is changing. Typically, you can use stringbuffers to dynamically construct character data.8. What are the similarities and differences between runtime exceptions and general exceptions?An exception indicates an abnormal state that may occur during the running of the program. An exception indicates an exception that may occur during common operations on the virtual machine. It is a common run

construct character data. 8. What are the similarities and differences between runtime exceptions and general exceptions? An exception indicates an abnormal state that may occur during the running of the program. An exception indicates an exception that may occur during common operations on the virtual machine. It is a common running error. The Java compiler requires that methods must declare and throw pos