Well Known Internet Basics At 1 Glance

Computers Knowledge is gaining importance in the Bank Exams of IBPS or SBI and the Internet is one of the key components. It’s very essential to know the basics of the Internet and related information so that candidates can answer correctly in exams.

Also learn about the History of ComputersComputer HardwareOperating Systems, and Computer Network.

internet basics
Internet Basics

What is Internet?

The Internet, known simply as the “Net“, is a worldwide system of computer networks. It was originated by the U.S government, after which it began building a computer network in the 1960s known as ARPANET.

It uses TCP/IP to transmit data via various types of media. The internet is a network of global entities – including private, public, business, and other networks – connected by wireless and fiber-optic technology.

It’s a cost-effective communications method in the world, in which the following services are available – Email, Online shopping, Online Movies, Data transfer/file sharing, and many other services provided.

What is Domain?

When referring to an Internet address or name, domain, or domain name is the location of the website. It is used for finding and identifying computers or servers over the Internet which will be serving the required information.

A domain name can be any combination of letters and numbers, and it can be used in combination with the various domain name extensions, such as .com, .net, .org, and more.

A domain name must be registered before it is used. Every domain name is unique and it’s an essential part of a website. Example – XYZ.com, where .com refers to Domain name and XYZ – website name

What is Subdomain?

A subdomain is an additional part of the main domain. Subdomain are created to navigate to different parts of the website. We can create multiple
subdomain or child domain to the main domain.

Example: abc.xyz.com
In the above example, ‘abc‘ is the subdomain of the main domain ‘xyz
The most common use-case of a subdomain is for creating a testing or staging version of a website. Subdomains can be very useful in organizing your website content more efficiently.

What is DNS server?

In general Domain Name server can be said as a phonebook for the internet. Whenever we type any domain name like ‘google.com’ or ‘gmail.com’ into web browsers, DNS is responsible for finding the correct IP address for those sites.
For example, xyz.com DNS translates and maps to IP address

What is Fibre Network?

Fiber optics, or optical fiber, refers to the medium and the technology associated with the transmission of information.
The fiber network is the latest change to the way data is transferred around the globe. Fiber cables transmit large amounts of data at a very high speed.

What is Intranet?

Intranet is a private network developed within an enterprise that is used to share company’s information securely. Security can also be increased
within the intranet by establishing a database that maintains all username who are allowed to access the network.

An intranet may also consist of many interlinked local area networks (LANs) as well as leased lines in the wide area network (WAN).
An employee who needs to access the intranet must have a network password and be connected to LAN.

What is Difference between Internet vs Intranet?

The biggest difference between internet and intranet is that the internet can be accessed by anyone from anywhere, whereas intranet can only be
accessed by a specific group of people who have authenticated credentials and are connected to LAN or VPN.

S. No.InternetIntranet
1Referred as Public Network.Referred as Private Network.
2Accessible to Everyone.Not accessible to everyone.
3Can access all websites.Limited access to websites.
4It’s unsafe.It’s safe.
5It’s not owned by any single entity.It’s owned by one company.
6Managed by multiple companies.Managed by one company.

Important HTTP Code

HTTP code which are issued by a server in response to clients request. Below are the HTTP code categorization:

  1. 1xx are Informational code
  2. 2xx are Success code
  3. 3xx are Redirectional code
  4. 4xx are Client Error code
  5. 5xx are Server Error code

1xx Code

  • 100 continue
  • 101 Switching protocols
  • 102 Processing (WebDAV)

2xx Code

  • 200 Ok
  • 201 Created
  • 202 Accepted
  • 203 Non Authoritative Information
  • 204 No Content
  • 205 Reset Content
  • 206 Partial content
  • 207 Multi-status (WebDAV)
  • 208 Already Reported (WebDAV)
  • 226 IM Used

3xx Redirection

  • 300 Multiple choices
  • 301 Moved Permanently
  • 302 Not Found
  • 303 See Other
  • 304 Not Modified
  • 305 Use Proxy
  • 306 Unused
  • 307 Temporary Redirect
  • 308 Permanently Redirect

4xx Client Error

  • 400 Bad Request
  • 401 Unauthorised
  • 402 Payment Required
  • 403 Forbidden
  • 404 Not Found
  • 405 Method Not Found
  • 406 Not Acceptable
  • 407 Proxy Authentication Required
  • 408 Request Timeout
  • 409 Conflict
  • 410 Gone
  • 411 Length Required
  • 412 Prediction Failed
  • 413 Request Entity Too Large
  • 414 Request URI Too large
  • 415 Unsupported Media Type
  • 416 Requested Range Not Satisfiable
  • 417 Expectation Failed
  • 418 I’m a teapot (RFC2324)
  • 420 Enhance Your Calm (Twitter)
  • 422 Unprocessable Entity (WebDAV)
  • 423 Locked (WebDAV)
  • 424 Failed Dependency (WebDAV)
  • 425 Reserved for WebDAV
  • 426 Upgrade Required
  • 428 Prediction Required
  • 429 Too Many Request
  • 431 Request Header Fields Too Large
  • 444 No Response (Nginx)
  • 449 Retry With Microsoft
  • 450 Blocked by Windows Parental Controls (Microsoft)
  • 451 Unavailable For Legal Reasons
  • 499 Client Closed Request (Nginx)

5xx Server Error

  • 500 Internal Server Error
  • 501 Not Implemented
  • 502 Bad Gateway
  • 503 Service Unavailable
  • 504 Gateway Timeout
  • 505 HTTP Version Not Supported
  • 506 Variant Also Negotiates (Experimental)
  • 507 Insufficient Storage (WebDAV)
  • 508 Loop Detected
  • 509 Bandwidth Limit Exceeded (Apache)
  • 510 Not Extended
  • 511 Network Authentication Required
  • 598 Network Read Timeout Error
  • 599 Network Connection Timeout Error