performance engineering interview questions

An index is a special file (an index on an InnoDB data table is an integral part of a tablespace) that contains reference pointers to all records in the data table. Summary of PHP Elementary classic interview questions (part 1) 17. differences between isset, empty, and is_null Isset determines whether the variable is defined or empty If a variable exists, true is returned. otherwise, false is returned. if t

Php interview questions and answers $ Img = file_get_contents ('http: // www.baidu.com/img/baidu_logo.gif '); File_put_contents('1.gif ', $ img ); Echo ''; ?> 3, Function is_gfriend ($ na, $ nb) { $ Random1 = rand (1/5); // calculate their fate $ Random2 = rand (1, 5 ); If ($ random1 ==$ random2) Retu

Php programmer interview questions (Sina) This article introduces a php programmer interview question from Sina. if you have any questions, refer to it.1. write a function, as efficient as possible, to retrieve the file extension from a standard url such as: http://www.sina.com.cn/abc/de/fg.php? Id = 1 need to

While Oracle DBAs are high-end jobs in the IT industry and demand is strong, it is essential to enter the industry to do a DBA interview. Oracle Training Center CUUG the most important Oracle DBA interview questions and answers for the Oracle DBA for reference after a trainee interview:Problem1. Explain the different points of cold and hot backup and their advant

I will summarize some common android interview basic questions to see how many questions can you make? 1. What are several intent startup methods? Do you understand each meaning? Here, Android123 reminds you that some Intent tags include FLAG_ACTIVITY_BROUGHT_TO_FRONT, FLAG_ACTIVITY_CLEAR_TOP, struct, struct, FLAG_ACTIVITY_MULTIPLE_TASK, and FLAG_ACTIVITY_NE

I haven't worked as a formal engineer for a long time since my internship. Recently, I feel a little idle and suddenly feel that I am quite normal under work conditions. I received a technical interview call from a company at this morning and talked for more than half an hour. I still answered the basic questions, but I still have to discuss some details. I will sort it out in idle time and add myself. I. F

using parallelism in Core Data is that each NSManagedObjectContext must be accessed only from the process in which it was created . What is the difference between POST and GET for HTTP?The request for a get type is idempotent according to the HTTP protocol, while the POST request has side effects, that is, get is used to get some resources, and post is used to change some resources, which may create new resources or update existing resources.A POST request is more secure than a GET reques

The php interview questions collected on the Internet are posted for you in the php Tutorial! I. Basic question 1. what is object-oriented? What are the main features? A face object is an elegant method to directly map objects and concepts in nature to the program world! Main features: abstract, php interview questions

Hibernate Interview Questions and answersEssence-a large collection of Hibernate Interview Questions and answers1. What is the matching relationship between the relational data model and the Object Model (multiple choice) in general)A) table corresponds to Class B) record corresponding object C) Table field corresponds

string is also a relatively simple data structure, which may cause the interviewer to repeatedly ask questions. In fact, strings are also a testProgramImportant test points for program specifications and programming habits. Do not ignore these details, because these details will reflect your knowledge in the operating system, software engineering, boundary memory processing, and become a reference factor f

extension method?LINQWhat is it? You thinkC #3.0What are the important features they bring about?BclWhich class libraries are related to these features? Which of the following are your most commonly used The delegate can be considered a type-safe function pointer. 741 words are omitted here... >What technical books, websites,Community, Project, etc? What else do you have access?. NetOther technologies. NetOr. NetAre there targeted parts for comparison? Onecode is a good project Htt

Reprinted ETL architect interview questions 1. What is a logical data mapping and what does it mean to the ETL team? What is Logical Data ing? What role does it play on the ETL project team? A: Logical Data Map) describes the data definition of the source system, the model of the target data warehouse, and instructions on operations and processing methods to convert the data of the source system to the data

The answer here is not comprehensive. These questions can be explained from multiple perspectives. Maybe you don't have to give a full answer during the interview, you only need to answer your questions to familiarize the interview examiner with Oracle concepts. 1. Explain the differences between cold backup and hot ba

Ordinary PHP Programmer pen TestTags: programmer PHP interview 2009-02-06 15:191. Use PHP to print out the day before, the print format is May 10, 2007 22:21:212. PHP code is as follows:$a = "Hello";$b =amp; $a;Unset ($b);$b = "World";echo $a;What is the result?3. PHP code is as follows:$STR = "CD";$ $str = "Landog";$ $str. = "OK";Echo $CD;What is the result?4. Write a code with PHP, implementation does not use the 3rd variable, Exchange $a, $b value,

Test your Java basic test questions: This is a few interview questions I designed. The requirement is that there should be as few questions as possible and they can be completed within five minutes, but it can basically reflect the level of knowledge of the interviewer. So I designed six questions.If you are able to fi

rewrite the aof file, the performance impact of this persistence is minimal, but the aof file will continue to grow, aof file over the General Assembly to affect the recovery speed of master restart. Master should not do any persistent work, including memory snapshots and aof log files, in particular, do not enable memory snapshots to persist, if the data is more critical, a slave open aof backup data, the policy is synchronized once per second.

oracle| problem This may be the article you have been looking forward to, while focusing on this technical issue, be sure to read the questions and answers about the individual in the interview (this part will appear in the next few installments). The answer here is not very comprehensive, these questions can be explained through a number of angles, perhaps you d

corresponding action, while the user's data to fill the corresponding actionform, and then the Actionform is distributed to action for processing.3.Action automatically calls the Excute method, in which the action takes the user-filled data from the Actionform and invokes the model (JavaBean) for processing, and then displays the results of the processing in a different view (JSP page)struts-config.xml:struts 's configuration file .It says that each user's request is handled and forwarded throu

) Select the correct collection type as needed. For example, if you specify a size, we will choose an array instead of a ArrayList. If we want to traverse a map in order of insertion, we need to use TreeMap. If we don't want to repeat, we should use set.(2) Some collection classes allow you to specify the initial capacity, so if we can estimate the number of stored elements, we could use it to avoid re-hashing or resizing.(3) programming based on interfaces, rather than implementation-based prog

TreeMap. If we don't want to repeat, we should use set.(2) Some collection classes allow you to specify the initial capacity, so if we can estimate the number of stored elements, we could use it to avoid re-hashing or resizing.(3) programming based on interfaces, rather than implementation-based programming, allows us to easily change the implementation later.(4) Always use type-safe generics to avoid classcastexception at run time.(5) Using the immutable classes provided by the JDK as key to t