DNS request of mine pool domain name

1. Verify that the server computer has a working network connection. First, use the basic network and hardware troubleshooting steps to check whether the relevant client hardware (cables and network adapters) is working properly on the client

if the server hardware is ready and working properly, use the ping command to check the network connectivity between other in use and available computers or routers (such as its default gateway) on the same network as the affected DNS server

many users like to use two screens, especially programmers, game players, video procers and so on. It can be said that the two screens display and the game work together. So what's the use of setting up al screen display or multi screen display? How to set up al or multi screen display? Here is a brief introction to its function and specific operation method

What are the advantages of al screen display (computer)

1. Large screen splicing

(splicing computer graphics, splicing dynamic video) projection wall; Command and dispatch systems for public security, military, railway, transportation, aerospace, posts and telecommunications, satellite launching, etc; Graphics and image editing, 3D animation, multimedia design; Process control in instrial field; Information display of securities trading, futures and banks; CAD / CAM design, typesetting editing system, video image editing

2. File editing:

when making planning documents, you should also refer to and search for relevant network information, so as to avoid data confusion caused by switching windows

3. Drawing editing:

when using the drawing software to design a case, the reference document window can be opened at the same time, and the desktop can also be extended to facilitate the processing of large-scale design draft proction, which does not overlap with the proofreading window

4. Film and television entertainment:

(1) watch Internet TV and browse the program introction of other channels at the same time, so that you can not miss the wonderful programs

(2) when playing online games, you can synchronously compare the secret skills of the game strategy< 5. Office:

(1) view large tables (such as Excel charts) across more than two screens

(2) to open multiple programs on the extended desktop space at the same time, there is no need to switch the windows frequently

(3) read the email and open the attachment file on other screens at the same time

6. Program design:

when writing a complex program, another window can view the program execution result screen at the same time to facilitate updating and modification

these are the advantages of al screen computers. Do you know something about al screen computers now? See small make up for everybody to enumerate is the advantage of double screen computer is a little bit excited? Let's take a look at how to set it<

1. Hardware requirements (take win10 system as an example)

1. The computer host must have any two-way output independent graphics interface of VGA / DVI / HDMI (generally supported by entry-level graphics card), as shown in the figure below:

2. Prepare any two VGA / DVI / HDMI cables, and the appearance diagram of the corresponding connection cable of the display output interface is as follows:

3. Two monitors, Support any two interfaces of VGA / DVI / HDMI (otherwise VGA converter connector is needed)

2. Operation steps of al screen

1. First, connect the external display and computer graphics card interface through any two cables of VGA / DVI / HDMI

2. After the connection is successful, enter the desktop of the computer system, right-click the blank space of the desktop, and select display settings

3. If the connection is successful, you can see that there are two displays

4. In the display interface, select expand these displays under multi display settings, and then the two displays can be displayed normally

5. If the line detection is OK and still can't be displayed, right-click the desktop and select NVIDIA control panel

6. Find [set multiple monitors], and then check the monitor we want to use<

3. Multi screen display method

hardware requirements:

in addition to supporting al screen hardware conditions, some computers need to enter BIOS settings to find relevant options. If it cannot be found, it means that the motherboard does not support it, please refer to the following operation

steps to enter BIOS:

1. Turn on the computer to enter BIOS, find the options of [devices] - VIDEO setup], and click enter

2. Select the select active video option and set it to IgD mode, and set the multi monitor support option to enabled mode

3. After setting, click F10 and select Yes to save

4. After restarting the operating system, right-click in the blank space of the desktop, find the integrated graphics card console program from the menu, and set the multi screen display.

2. First, the client sends a DNS request to translate the IP address or host name. After receiving the request from the client, the DNS server:
(1) check the cache of the DNS server. If the requested address or name is found, the DNS server sends a response message to the client
(2) if it is not found, it will search in the database. If the requested address or name is found, it will send a response message to the client
(3) if it is not found, the request is sent to the root domain DNS server, and the top-level domain is searched from the root domain in order. The top-level domain is searched for the secondary domain, and the secondary domain is searched for the tertiary domain until the address or name to be resolved is found. That is, the DNS server sends the response information to the DNS server of the client's network. After receiving the response, the DNS server stores it in the cache, and then, Send the result to the client
(4) if it is not found, an error message will be returned
do you understand this question? It's ok if you don't understand it. You can go to Blackhorse programmer to learn, and then you can understand it slowly!

3.

1. Open the new network domain name management panel address, enter the domain name, domain name password, verification code, and click "login"

2. Click "domain name management"

3. Display the domain name information and click "modify DNS"

4. Enter the new DNS server information and click "OK"

5. Complete the modification of DNS server

4. First: DNS, the full name of the domain name system, namely the domain name resolution system. DNS helps users find paths on the Internet. Second: http: Hypertext Transfer Protocol (HTTP), is through DNS resolution, can carry on the HTTP protocol transmission, and can say that the two are complementary, interdependent relationship

5.

The command cannot resolve the domain name. The resolution needs to go to the background of the domain name

the following reference:

1. You need to input the background domain name for operation analysis, as shown in the figure below

6. First, the client sends a DNS request to translate the IP address or host name. After receiving the request from the client, the DNS server:

(1) check the cache of the DNS server. If the requested address or name is found, the DNS server sends a response message to the client

(2) if it is not found, it will search in the database. If it finds the requested address or name, it will send a response message to the client

(3) if it is not found, the request is sent to the root domain DNS server, and the top-level domain is searched from the root domain in order, from the top-level domain to the secondary domain, and from the secondary domain to the tertiary domain until the address or name to be resolved is found. That is, the response information is sent to the DNS server of the client's network. After receiving the response, the DNS server stores it in the cache, and then, Send the result to the client

(4) if it is not found, an error message will be returned. For more information, see "this is how to learn Linux.".

8. First of all, Google's DNS server IP is 8.8.8.8 and 8.8.4.4. In addition, they are all abroad, so it's not necessarily fast to go to domestic websites. The parsing process is as follows:
suppose you enter mail.163.com
1. The host first searches its own cache file, if there is mail.163.com information, then 7; Otherwise 2
2. The host queries the local domain name server (here is Google's DNS server you filled in), if the server has the IP information of mail.163.com, then 6; Otherwise 3
3. Google's DNS server queries the root domain name server. The root DNS server told DNS. Google (I abbreviated) that it should query the top-level DNS server of DNS. Com next time
4. Dns.google queries the dns.com top-level domain name server. If the server has the IP information of mail.163.com, then 6,; Otherwise 5
5. Dns.com top level domain name server points out to dns.google that it will launch a query to dns.163.com next time. When dns.google makes a query to dns.163.com, Netease's DNS server will have the IP information of its 163mail server, and then send it to Google's DNS server
6. The DNS server of Google receives the resolved content and sends it back to the host
7. The host obtains IP information.

9. There are two common methods of domain name resolution: distributed and centralized

distributed domain name resolution is to maintain a static text file (host) on the client computer, which contains the mapping between host name and IP address. With the expansion of the network scale, distributed domain name resolution has become inadequate

centralized domain name resolution requires multiple DNS servers in the network, which are responsible for maintaining the domain name / IP address mapping database. The client obtains the address information corresponding to the domain name from the specified server. Once the DNS server specified by the client does not contain the corresponding data, the DNS server recursively queries the network and obtains the address information from other servers.

10. DNS modification refers to the modification of domain name system
if you have an independent DNS server and want to resolve the registered domain name through DNS, you can choose DNS modification service. Login member area - domain name service - domain name management - click the corresponding domain name - DNS modification to modify your domain name DNS information
domain name resolution process
Step 1: the client makes a domain name resolution request and sends the request to the local domain name server
Step 2: when the local domain name server receives the request, it first queries the local cache. If there is such a record item, the local domain name server will directly return the query result
Step 3: if there is no such record in the local cache, the local DNS server will directly send the request to the root DNS server, and then the root DNS server will return to the local DNS server the address of the primary DNS server of the queried domain (sub domain of the root)
Step 4: the local server sends the request to the domain name server returned in the previous step, and then the server receiving the request queries its own cache. If there is no such record, it returns the address of the related lower level domain name server
Step 5: repeat step 4 until the correct record is found
Step 6: the local domain name server saves the returned results to the cache for the next use, and returns the results to the client.