pca interview questions

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. 　　 Q: 2 How to view the Linux default gateway? A: With the "Route-n" and "NETSTAT-NR" commands, we can view the default gateway. In addition to the default gateway information, the

C + + Overload related interview questions Table of Contents 1. What is an overload, what is the definition of the overload. 2. Overloaded functions cannot be distinguished by returning values. 3. What is the difference between overloading (overload) and overriding (override). 4. What is redefinition (redefining). 5. Please write the prefix (prefix) and suffix (postfix) overload function of the + + op

(avoid loss of modification) 2) Level two block protocol: increase transaction T on the basis of the first level blocking protocol must read the data R before reading the lock, you can release the read lock after reading (to avoid loss of modification and read dirty data) 3) Level three block protocol: increase the transaction T on the basis of the first level blocking protocol the lock must be read before the data R is read, until the end of the transaction is released (avoid loss of modificat

pipeline to achieve this need.[email protected] ~]# Cat File_name.txt | More8. Q: Which user does the data dictionary belong to?A: The data dictionary belongs to the ' sys ' user, and the user ' sys ' and ' Sysem ' are automatically created by default by the system.9. Q: How do I view a summary and usage of a Linux command?Suppose you accidentally see a command in the/bin directory that you've never seen before, how do you know how it works and how it's used?A: Using the command Whatis can show

Tags: meaning data SQL database ODB details issues HDF cut feature threads1. What are the differences between row and column storage?What are the modes of 2.MySQL database Binlog? What's the difference?3.awk How to print out the number of columns in a file?4.awk How do I specify delimiters, and how do I specify delimiters for cut?5. What happens if one of the disks in HDFs (the amount of data is particularly large) is unplugged.6. How do I view threads in Linux?7. How do I view Linux disk IO? Wh

No source for the original email. Sorry. I agree with question 11th. The integrity of a person is very important, and has been finalized for a long time. Unless there are major changes, such as changing religious beliefs. ====================================== 11 typical interview questions from one general manager Sun Tzu said: "the soldiers, the state of the event, the place of death, the way of s

Android Development (+)Copyright NOTICE: This article for the Dream-finddreams original article, please pay attention to: Http://blog.csdn.net/finddreamsFollow Finddreams Blog: http://blog.csdn.net/finddreams/article/details/44301359In the previous article we have learned some basic questions about the Android written test,[Android Development interview by--2. Common Android Basic pen

0x10 basic issues that embedded programmers should know C language testing is an essential and effective way to recruit embedded system programmers. Over the years, I have both participated in and organized many such tests. During this process, I realized that these tests could provide a lot of useful information for both the interviewer and the subject. Besides, I did not talk about the interview pressure, this test is also quite interesting. From t

Interviews such as the college entrance examination, carefully prepared for a long period of time, a variety of interview questions repeatedly practice, read and learn. Finally, I went to the test with confidence. As a result, I went out of the test room and fell down to my teeth. Originally, there were partial questions in the examination question, and a big sco

In our previous course, we introduced PHP interview questions about thinkphp, as well as 2017 of the most comprehensive PHP interview questions and answers summary, many of the PHP interview questions are oral, there are many writ

. IntroductionThe purpose of this article is not to provide guidance for the job interview for C/C ++ programmers, but to analyze the connotation of the interview questions technically. Most of the interview questions in this article come from major forums. Some answers to t

No source for the original email. Sorry. I agree with question 11th. The integrity of a person is very important, and has been finalized for a long time. Unless there are major changes, such as changing religious beliefs. ====================================== Sun Tzu, a general manager's 11 typical interview questions, said: "The soldiers, the country's major events, the land of life, the survival of the r

I went to the interview for the first time today. I couldn't answer many questions. please advise me to go to the interview for the first time. I found many of them are different from textbooks. 3. What about hibernate? 8. Are you familiar with the configuration of the James server? How many docs commands do you remember? (Project) 11. how can I turn to PHP for j

(i) Description1. document Some of the programming questions (Python) that you encounter when interviewing a test engineer. 2, review the interview process, do a summary.(ii) title1. Input: JSON {"A": "AA", "B": "BB", "C": {"D": "DD", "E": "EE"}} output: Dictionary {' A ': ' AA ', ' B ': ' BB ', ' d ': ' DD ', ' e ': ' EE '}1 defconversion (n,the_dict):2 forKey,valueinchN.items ():3 #if value i

What kind of php interview questions does the company usually offer? How difficult is it, such as the question, some basics, and less data structures and algorithms ~~, There are many interview questions that have been posted in this section. you can refer to them. there are no standards, because each interviewer has d

This article mainly shares seven JavaScript interview questions to help you successfully pass the interview, interested friends can refer to the following seven JavaScript interview questions that you should ask before the interview