what is primary dns

that of the IDE hard disk. It should be noted that the motherboard of different brands must be set differently, but the general method is as follows.Solve the Problem of drive character interleavedIf you install a dual hard disk, you cannot leave the drive letter staggered. What is "drive-character staggered? For example. Assume that your first hard disk origina

that there is only one channel inside the hub (that is, a public channel), and then all the ports are connected underneath the public channel. IP Broadcast The so-called IP broadcast (also called: Mass), refers to the hub when sending data to the underlying device, regardless of the origin of the data from where the data sent to each port, if there is a port n

managers directly, and then could do their own thing. Managers are responsible for coordinating the work of the underlying staff. Because managers are knowledgeable about their people and what they are responsible for. So, most of the time, the company's various decisions, notifications, and so on, the CEO as long as the communication between the management staff is enough.And with the increase of CPU capa

The following excerpt from Go Web programming is easy to understand.When we browse the Web, we open the browser, enter the URL and press ENTER, then we will show you what you want to see. What is hidden behind this seemingly simple user behavior?For the normal online process, the system

What if the win8.1 system network is limited? First, check the network cable This is also the most special, most embarrassing situation. It's also easy to troubleshoot, open the Control Panel, select Network and Internet, and check whether Wlan or Ethernet is connected. Ii. Retrieve IP address informati

1. What are the status messages of the HTTP protocol? 1 **: request received, continue processing2 **: The operation is successfully received, analyzed, and accepted.3 **: the request must be further processed.4 **: The request contains an error syntax or cannot be completed5 **: the server failed to execute a fully valid request. 2. What

What is a record: the (Address) record is used to specify the IP address record corresponding to the Host Name (or domain name. You can direct the website server under this domain name to your web server. You can also set a subdomain name. In general, a record is the IP address of the server, and a record bound to the

session.Alter session set query_rewrite_enabled = trueNote: If the user function is indexed, the user function should add the deterministic parameter, which means that the return value of the function is fixed when the input value is fixed. Example:Create or replace function trunc_add (input_date date) return date deterministicAsBeginReturn trunc (input_date + 1

When we use wireless network often appear "Wireless IP conflict" Situation, then what is the cause of this? And how should we solve it? Let's take a look at the details below. In some wireless networks, because of the large number of clients, to facilitate the management of these machines, many administrators use the DHCP service provided by the wireless router to provide clients with TCP/IP parameter confi

I. Introduction to the HTTP protocol 1. What is an agreement Two people agreed to do the same thing (e.g., housing agreement) 2.HTTP is the agreement of WHO and WHO HTTP protocol is the protocol between browser and server two objects The English name of the 3.HTTP protocol (hypertext Transfer Protocol), which means Hy

students and do more with less. There is really not much to learn about writing code, but it should be individualized. The following points I think are the focus of the distinction: 1. Web Development 2. Non-web development If you are developing the Web, then you need to deal with: –html–css -Route Selection -Database -Server Hosting/DNS -App Structure Obviously there are many things to learn, but most of

. Query a Web domain name (DNS) on a Dynamic Web page to find the corresponding IP. dynamically generates HTML tables. Quickly create a "customer return" system that allows web surfers to send letters to webmasters from the Web. So that the Web page can record the behavior of Web surfers, that is, log. The 6th chapter to the 13th chapter, we will be very detailed to introduce some very important, very commo

hardware system. Kemin: Please use "mechanism is a man-made nature" to understand the above section and refer to it here .The resource Principle What is the essence of an operating system's complicated structure and behavior? By providing two different operating system definitions, we hope to give readers some tips on the nature of the operating system. The firs

Apache Zookeeper is a service that is used by clusters (node groups) to coordinate between themselves and to maintain shared data through robust synchronization techniques. Zookeeper itself is a distributed application that provides services for writing to distributed applications.The common services provided by zookeeper are as follows: Naming Service -

FTP (file Transfer Protocol) is the abbreviation for the document Transfer Protocol. The role of FTP As its name shows: the primary role of FTP is to have users connect to the last remote computer (which runs the FTP server program) to see what files are on the remote computer, then copy the files from the remote com

Solution 1 1. For example, the Web page can not open has been entering the state what to do 2. First close all open Web pages after you find the desktop of IE browser because basically all browsers are based on IE kernel, so find IE browser can be right click to find properties open properties The first page is shown in the following figure 3. After opening in the general find the browsing history re

CRT displays (the scientific name "cathode ray tube") is such a device, it mainly by the electronic gun (electron gun), deflection yoke (deflection coils), shade mask (Shadow mask), high pressure graphite electrode and phosphor coating (phosphor) And the glass shell is composed of five parts. One of the most impressive is the glass shell, also known as a fluoresc

Analysis and overviewContent:What is XSLT?Role of XSLTXSLT as a languageOperation of the XSLT processorSample style SheetThe advantages of XSLTConclusionResourcesAbout the authorEvaluation of this articleWhat kind of language is XSLT, what is its purpose, and why is it desig

What is a two-level domain name? I heard that the application domain name to two domain names, one is with the WWW, one is not with, and heard that no www is a two-level domain name, do not know is this, there

high-speed cache memory between the CPU register and the primary memory called the L1 cache, it can be accessed within 2-4 clock periods. Later, it was found that there was a large gap between the L1 high-speed cache and the primary storage, and a faster L2 cache was inserted between the L1 high-speed cache and the primary storage, it can be accessed within 10 c