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One of Google's interview questions: there are eight balls of the same size, 7 of which are of the same weight, with a slightly heavier one. How can I use the balance to determine which ball is heavier only twice? Answer:For the first time, I took out 6 of them and placed them on the balance, each weighing 3. I can determine where the heavier one is. There are three situations: 3 on the left of the balance
This article briefly introduces the interview questions for jsp programmers. For more information, see. JSP Question 1. What built-in objects does jsp have? What are their roles? A: JSP has the following nine basic built-in components (which can correspond to the six internal components of ASP ): Request client request, which contains parameters from the GET/POST request Response returned from the response
Linux interview questions, linux interview questions ------- This is the Linux interview question ----------------- Part 1: multiple choice
the available functions. Therefore, if you have this limitation, you only have to discard the software and upgrade the system two choices. A. Correct B. Wrong answer: A5, in the shell command line mode, a line can only write one instruction, can only use one command at a time. A. Correct b. Wrong answer: b6. Most analog modems, ISDN devices, and T1 modems are part of a block device. A. Correct b. Wrong answer: b7, the Linux kernel is installed after
Questions about the Linux network ..... .....
First step: Find all files in the/oldboy directory and its subdirectories that end with the extension. shFind all Files:[Email protected] oldboy]# find/oldboy/-type f/oldboy/t.sh/oldboy/test.sh/oldboy/test/del.sh/oldboy/alex.txt/ Oldboy/oldboy.txtFind all files ending with. sh[Email protected] oldboy]# find/oldboy/-type f-name "*.sh"/oldboy/t.sh/oldboy/test.sh/oldboy/test/del.sh13.2 Step Two: How to replace the Oldboy in a file with the Oldgirl[[email protected] oldboy]# #sed ' s# What you're l
Linux Related Questions AnswerLinux Face Test Answer hypothesis apache The log format is: Span style= "Font-family:tahoma" > 118.78.199.98–-[09/jan/2010:00:59:59 +0800] "get/public/css/ Index.css http/1.1″304– "http://www.a.cn/common/index.php" "mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; GTB6.3) " problem 1 : in apachelog 10 ip awk ' {print '} ' Apache_log |sort |u
during logon?Q: In terms of brute-force rate, the virtual terminal of a fool seems to have only a single weapon but not anything else. How can I modify it?Q: How do I modify the role name, attributes, and other information related to the role in the created account?Q: I don't want to know so much about it. I don't want to install linux. Is there any silly operation that can be set up successfully? For answers
For questions and answers about linux testing, be professional. -- Linux general technology-Linux technology and application information. For details, refer to the following section. 1. What is linux? 2.
Server and so on.2. Under the premise of not destroying the 1 deployment, also use Oldboy user to complete multiple keys to a lock (B,c key, a lock)-Free landing deployment as follows:B---------->aC---------->aNote: This topic is used in the production environment, data backup, etc., but the production environment this way is recommended to be implemented by the daemon process.The goal of the final realization is, 1, 22 topics to achieve two-way password-free authentication login.3. If you incr
Linux Questions and answers on operation and maintenance surface1 , create a 10G file system, type EXT4, require the boot can be automatically mounted to a separate data/data directory;Check your computer's existing disk and partition, command: [[email protected] ~]# DF–LH1.1 We all know that the Linux system partitio
I. multiple choice questions: 1. Add a static route to get to network 196.199.3 through the eth2 interface. Use. route add-net 196.199.3.0 B. route add-net 196.199.3.0 netmask route 0.0.0 eth2 C. route add 196.199.3.0 netmask 255.0.0.0 eth2 D. route add-net 196.199.3.0 netmask limit 255.0 eth2 answer: d 2. What are FTP data transmission modes? A. 1 B. 2 C. 3 D. 4 answer: B 3. The so-called virtual host refers to:. A machine has multiple network
common Linux commands is: Command [Option] [parameter] Command Option [parameter] Command [Option] [parameter] Command Option Parameter A: The correct syntax for Linux commands is: Command [Option] [parameter]. Q.11: Make a difference. Vi Vim Cd Nano A: cd is different from other commands. Vi, vim, and nano are both editors used to edit documents, while cd is used to switch directories.
20 Linux Command interview questions and answers below:Q: 1 How do I see the running level of the current Linux server? A: The ' who-r ' and ' runlevel ' commands can be used to view the running level of the current Linux server.
Interview Questions: common linux commands and common linux commands Command for displaying directories and files Ls: Command Used to view all folders. Dir: command Tree used to display the specified folder and Directory: list the directory content in a Tree chart Du: displays the directory or file size. Modify directo
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 fe
integer.In other words, a mutex can only be used for mutually exclusive access to a resource, and it cannot implement multi-threaded mutex issues for multiple resources.The semaphore can realize multi-thread mutual exclusion and synchronization of multiple homogeneous resources.When the semaphore is a single-valued semaphore, it is also possible to complete mutually exclusive access to a resource.3. The lock and unlock of the mutex must be used by the same thread, the semaphore can be freed by
. Blocking/non-blocking differences, event loop Select/poll/epoll, how common network library Read/write will be implemented (refer to Muduo). The interviewer will ask if the client needs to bind;tcp/udp the nuances of protocol programming ...5. Tool-related. vim/makefile/gdb/g++ ...6. C + + related. It is unavoidable to ask virtual functions; Common STL implementations and operations; What is extern c doing?7. Script-related. Shell/perl/python at least one door, OPS/deployment is required.The a
[] One of the interview questions for C/C ++, a Linux Application Development Engineer: synchronization of multi-threaded programs in Linux Reference: three methods for Linux Thread Synchronization Link: http://www.cnblogs.com/eleclsc/p/5838790.html Brief answer: In
Series of articles: 11 basic Linux interview questions Basic questions about Linux interview-Part 1 Basic questions about Linux
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