What Is UDP? And The Difference Between UDP and TCP (UDP Full Form) Easy Explanation

UDP Full Form: Hello there, friends. Welcome to another new blog post in which we will explain what is UDP protocol, how it works, what its features are, what it is used for, what the difference between UDP and TCP protocols is, and what the advantages and disadvantages of UDP are.

If you want to learn everything there is to know about UDP, keep reading until the end. We’ve already told you about many different types of protocols in our blog, and this article is part of a series of protocols. If you want to fully comprehend the protocol, you must be familiar with all types of protocols.

So, without further ado, let us begin this article by learning what the UDP protocol is.

What exactly is UDP?

UDP, or User Datagram Protocol, is communication protocol used on the Internet to transfer data between two applications or devices. 
David Reed created this protocol as RFC768 in 1980.
Because UDP is an unreliable and connectionless protocol, data cannot be transferred unless connection is established. 
UDP is protocol that is used as an alternative to TCP (Transmission Control Protocol).
The UDP protocol does not require that data be delivered to the recipient in the same order in which it was sent. 
In UDP, data packet is referred to as Data Gram; however, there is no guarantee that all of the data sent by the Sender reaches the recipient; some Data-Gram may also be lost in the middle. UDP has fast data transmission rate.  As result, it saves both time and bandwidth.  UDP is component of the Internet Protocol Suite (IP), also referred to as UDP/IP.

What is the full meaning of UDP?

UDP is an abbreviation for User Datagram Protocol. This is also known as “Datagram Protocol User.”

What exactly is UDP Header?

The UDP header is simple 8-byte header.  Because UDP ports are 16 bits long, the port number range is kept from to 65535, with port number reserved.  Individual user requests are kept separate by port numbers.
UDP Header contains four fields:
– Source Port – The source port is two-byte field that identifies the source’s port number.
– Destination Port – This is also two-byte field that is used to identify the data packet’s destination.
3 – Length – This is 16-bit field that represents the total length of UDP, including the header and data.
4 – Checksum – two-byte field that stores the Checksum Value generated by the sender before sending the data packet.

How does UDP function?

UDP receives datagrams from one computer to another using IP addresses.  UDP collects the data in a UDP packet and adds it to the packet’s header. This information includes the Source and Destination ports, as well as the length of the packet and a checksum. The UDP packet is sent to the destination after it has been encapsulated in an IP packet.

However, unlike TCP, UDP does not guarantee that data packets will arrive at their intended destination.

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UDP Characteristics

The following are some of the most notable characteristics of the UDP protocol:

  • UDP is a connectionless protocol, which means it doesn’t need a connection to transfer data.
  • UDP is a fast protocol that cannot transfer data very quickly.
  • UDP is an untrustworthy protocol that does not guarantee data delivery.
  • UDP is used for transaction-based protocols such as DNS, BOOTP, and so on.
  • The checksum is the only thing in the data segment of UDP.

UDP Applications

The following are some of the most important UDP applications:

  • UDP can be used in applications where lossless data transmission is required.
  • The UDP protocol is used in applications such as gaming, voice, and video.
  • UDP has the ability to be used in multicasting applications.
  • In real-time applications, UDP is used.

The distinction between UDP and TCP protocols

In the table below, we’ve highlighted the key differences between UDP and TCP protocols –

UDP Protocol  TCP Protocol
UDP stands for User Datagram Protocol. The full name of TCP is Transmission Control Protocol.
The UDP protocol is connectionless protocol, 

which means that no connection must be 

established between the communicating devices.

The TCP protocol is a Connection-Oriented Protocol. It requires establishing a connection between the communicating device.
The UDP protocol is extremely fast. TCP protocol is slower than UDP.
UDP is an untrustworthy protocol. TCP is a global protocol.
The UDP header is 8 bytes in size. The size of the TCP header is 20 Byte.
In UDP, messages are delivered in no particular order. There is a sequence of message deliveries in TCP.
UDP does not guarantee data delivery. Data delivery is guaranteed in TCP.
UDP is used in DNS, RIP, BOOTP, and other protocols. TCP is used in HTTP, HTTPS, FTP, SMTP, etc.

The Benefits of UDP

The following are some of the most significant advantages of the UDP protocol:

  1. When compared to TCP, the UDP protocol is much faster.
  2. The UDP protocol is a very simple and useful communication protocol.
  3. In UDP, no connection is required for data transmission.
  4. UDP protocol is used by real-time applications such as chatting and online games.
  5. UDP can be used for broadcast and multicast transmission.
  6. A UDP connection does not require much upkeep.
  7. UDP can be used to reduce bandwidth.

UDP’s disadvantages

The following are some of the drawbacks of the UDP protocol:
  • UDP is an untrustworthy protocol.
  • UDP does not have feature to detect when data has been received.
  • UDP can detect the error but cannot specify what it is.
  • There is no guarantee that data will arrive in the order that it is sent over UDP connection.
  • UDP also does not guarantee that all data will be delivered.

FAQ – UDP Protocol

What is the full meaning of UDP?

UDP stands for User Datagram Protocol.

What exactly is the User Data Village Protocol?

The User Data Village Protocol (UDP) is communication network protocol that is used to transfer data between two devices over the Internet without requiring connection.

What is the length of the UDP header?

The UDP header is bytes in size.

Where does UDP come into play?

UDP is used in DNS, RIP, BOOTP, gaming applications, chatting applications, and other applications.

Who came up with the UDP protocol?

David Reed invented the UDP protocol in 1980.

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