operating system questions and answers

differences between UDP and TCP connections? A: TCP is a transmission control protocol that provides connection-oriented and reliable byte stream services. When users and servers exchange data with each other, data can be transmitted only after a TCP connection is established before data interaction. TCP provides the time-out redial function to verify data. UDP is a User Datagram Protocol, a simple datagram-oriented transmission protocol, and an unreliable connection. 21. How do processes an

bottleneck-the challenge is not so much from product design as from the game of short-term interests and long-term interests, the pragmatic cautious attitude and the operating principle of the excessive ideal goal game 6, open registration is not necessary, adhere to the invitation system will reduce operating pressure, enhance brand value, anyway, the spread o

addition, the wireless router and the firmware responsible for access are the same as those of the driver, which affects the wireless Internet access function. Solution: uninstall outdated drivers and firmware to download and install the latest driver for wireless module components on the official website. Wi-Fi connection failure Q A 5. software incompatibility If your computer has no wireless connection from the very beginning, it is likely that your computer has installed incompatible softw

[[, int N, int output []) 3. Operating System Task Scheduling Problems. Operating system tasks are classified into system tasks and user tasks. The system task priority is In the Array (the value of the element in the array is th

Preface: PHP for various types of database operations have support, the operation of the file also has a very rich way to operate, many friends are now operating or based on file operations but sometimes in the operation of documents there are still a lot of confusion and doubt, The following are some of the questions I encountered during my daily writing and some of my friends ' problems with file operatio

Objective:PHP for various types of database operations have support, the operation of the file also has a very rich way to operate, many friends are now operating or based on file operations but sometimes in the operation of documents there are still a lot of confusion and doubt, The following are some of the questions I encountered during my daily writing and some of my friends ' problems with file operati

Chinese preface: PHP for various types of database operations have support, the operation of the file also has a very rich way to operate, many friends are now operating or based on file operations but sometimes in the operation of documents there are still a lot of confusion and doubt, The following are some of the questions I encountered during my daily writing and some of my friends ' problems with file

0909 operating system tutorial understanding and understanding, linux operating system tutorial Questions: 1. What does the operating system do? 2. Why do I learn the

Operating System Experiment Instruction book Computer College of Yantai University Operating System Course Group 2008-9-20 the first part of the operating system on the computer guidance Linux

Whether Linux is a real-time system or a timeshare operating systemHttp://www.cnblogs.com/xiawen/p/3317302.html1. Real-time operating system definitionA real-time operating system (RTOS) is when external events or data are generat

four primary partitions per disk, three primary partitions, and one extended partition (the extended partition can contain 23 logical partitions ). Compared with the MBR partition style, the GPT partition style supports a maximum of 128 primary partitions per disk. The manageable storage resource range is far greater than that of MBR. In addition, GPT stores vital platform operation data in partitions rather than non-partitions or hidden sectors. In addition, GPT partitions have redundant prima

software Center for LVM installation. Uninstall process: Start the operating system uninstall (os-uninstaller Chinese name), and you will see that you are scanning the operating system interface when you open it: The middle may pop up the following prompt is there RAID on this computer? (For a raid you can refe

Introduction to operating systems, operating system concepts A computer system can receive and store information according to human requirements. It can process and provide the required results. The results (output information) depend on the received information (input information) and corresponding processing methods.

system implementation processor management, storage management, file management, input/output management, user and operating system interface work principle and implementation.Use it to promote learning: Try to understand what you learn and understand it on your existing operating

Some questions to note about operating the MySQL database in PHP 1. The exception to the semicolon For MySQL, the first thing you have to keep in mind is that each line of its command is separated by a semicolon (;) As the end, but ... There is no absolute thing here, too, when a row of MySQL is inserted into the PHP code, it is best to omit the following semicolon, for example: mysql_query ("INSERT into

1. The content of this article comes from courseware and student notes of famous universities (on campus, I often see someone buying notes at high prices)2. The instructor does not provide references, so he can only express his gratitude to the author. If your work is referenced, you can reply to the document to supplement the reference.3. I will not answer questions not related to the article, and the article content is also difficult. I am also diff

system to produce duplicate random number, I try to divide the total number of questions in the question bank into KP range, so that each range to produce a random number, so as to effectively avoid the random number of duplication. Sql= "SELECT * from judgment question ORDER by ID ASC" Rs.Open sql,conn,1,1 Mycound=rs. Recordcount ' The total number of questions