backend testing interview questions

Vim Training) SSH security enhancement method, password mode and RSA key mode configuration. Rpm/apt/yum/ports Pack, query, delete the basic commands. (Answer reference this article: Ubuntu Command Daquan series five--software installation) Makefile's basic format, GCC compilation, connection commands,-o0 and-o3 differences. (The answer refers to this article: configure, make, and make install in Linux compilation installation respectively) Basic use of gdb,strace,valgrind.

maintainability and non-repetition of wheel-making. For example, all spring templates (JDBC,REST,JPA, and so on) have the following advantages: they are built in a consistent way, so you can skip these general steps to focus on more important business logic. Spring MVC is not necessarily the best web framework. There are other, for example, Struts 2,wicket and JSF. That said, spring can also be well integrated with these frameworks (STRUTS,JSF, etc.). XML files are too bloated, and this

Binary Tree is a type of Data Structure frequently used in interviews. It is very interesting to find a type of path. Currently, we have seen two types of questions: first, we need to provide a sum of the node values, and then we need to print the path that is equal to this. 1. Given a binary tree and a number, print all the root-to-leaf paths such that adding up all the values along the path equals the given number. This question is relatively simp

). In the process of populating the handler, depending on your configuration, Spring will do some extra work for you: Httpmessageconveter: Converts the request message (such as Json, XML, and so on) to an object, converting the object to the specified response information. Data Transformation: Data conversion for a request message. such as string conversion to Integer, double, and so on. Data is initialized: Data is formatted for the request message. such as converting a string into a formatt

Java programmer interview questions (86-115) 86. In Struts 2, how does Action obtain the data that the user inputs from the page, and how does it transmit its own data to the view? A: There are three ways for Action to retrieve data from the page: 1) accept parameters through the Action attribute 2) obtain parameters through the domain model 3) ModelDriven ) Action saves data to the Value Stack. View

) s#,c#, G respectively represents the student number, the selected course number, and the academic score (1) Use standard SQL nested statements to query the student number and name of the elective course named ' Tax base '? Answer: Select s#, SN from S where s# in (select s# from C,SC where C. c#=sc.c# and cn= ' tax base ') (2) Use standard SQL nested statements to query the student name and affiliation of the elective course number ' C2 '? A: Select Sn,sd from S,SC where s.s#=sc.s# and sc.c#=

) s#,c#, G respectively represents the student number, the selected course number, and the academic score (1) Use standard SQL nested statements to query the student number and name of the elective course named ' Tax base '? Answer: Select s#, SN from S where s# in (select s# from C,SC where C. c#=sc.c# and cn= ' tax base ') (2) Use standard SQL nested statements to query the student name and affiliation of the elective course number ' C2 '? A: Select Sn,sd from S,SC where s.s#=sc.s# and sc.c#=

Visibility for summary of HTML interview questions, and visibility for question Summary1. Page visibility) It mainly provides two attributes, one event (both on the document Object ):1. attributes:1.1. hidden: gets or sets the visibility of the current page, a boolean value;1.2. visibilityState: gets the visibility status of the current page. The value is "hidden" and "visibility ".2. Event: visibilityChang

-9fa4ae06b28a.html Part 2: Spring, hibernate, and struts interview questions How does Hibernate work and why?Principle:1. Read and parse the configuration file2. Read and parse the ing information and create SessionFactory3. Open Sesssion4. Create transaction Transation5. Persistent operations6. Submit the transaction7. Disable Session8. Disable SesstionFactory Why:1. The code for JDBC database access is en

Linux interview questions required for O M 1. What is GPL, GNU, and free software? GPL: (General Public License): An authorization. Anyone has the right to obtain, modify, and re-release free software. GNU: (Plan): it aims to create a completely free and open operating system. Free Software: software that can be freely used, copied, researched, modified, and distributed without restriction. There are two m