What’s the URL?

What parts does the URL contain? What does each part do?

What parts does a URL (uniform resource path Address) contain? For example, “www.baidu.com/s? Wd = hello &…

1. Transport protocol: HTTP, HTTPS

2. Domain name: for example, www.baidu.com is the website name. Baidu.com is a level-1 domain name, and WWW is a server

3. Port: If this parameter is not specified, port 80 is used by default

4. Path www.baidu.com/ Path 1/ path 1.2. /…

5. Parameters carried:? wd=hello&rsv-spt

6. Anchor point: #5

Nslookup nslookup nslookup nslookup

  • 1. DNS is short for Domain Name System, which names computers and network services organized into a Domain hierarchy.
  • 2. DNS naming is used to search computers and services using user-friendly names on TCP/IP networks such as the Internet.
  • 3. When a user enters a DNS name into an application, the DNS service can resolve the name to other information related to it.
  • 4, when you enter the Internet address, is through the domain name resolution system to find the corresponding IP address, so as to access the Internet. In fact, the ultimate direction of a domain name is IP.
  • The nslookup command (nslookup is used to query DNS records to check whether domain name resolution is normal and diagnose network faults.)

What is the function of IP? How does the ping command work?

  • The Internet Protocal IP address is a unified address format provided by the IP protocol. It allocates a logical address to each network and each host on the Internet to shield physical address differences.
  • Ping is an executable command that comes with Windows. It can be used to check whether the network can be connected and help to analyze and determine network faults.

What is a domain name? What are the categories of domain names?

  • Domain names are load balancers for IP addresses
  • Top-level domain name Level-1 domain name Level-2 domain name
  • .com is the top-level domain name company
  • Xiedaimala.com Level 2 domain name
  • www.xiedaimala.com Level 3 domain name (commonly known as Level 2 domain name)