Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
The Data Link Layer of OSI Model
The data link layer (Layer 2) converts the raw transmission facility provided by the physical layer to a reliable and error-free link.
The main functions of the data link layer are as follows −
- It breaks up the stream of bits into data frames having sizes from a few hundred to a few thousand bytes.
- It ensures distribution of the frames to the different systems. For this, it adds a header to the frame containing the address of the sender and the receiver.
- In case of reliable connection, this layer ensures that the receiver sends an acknowledgement frame. In absence of acknowledgement frames, frame retransmission is done. It also has mechanisms to identify duplicate frames.
- The data link layer ensures flow control of transmission so that a fast sender does not drown a slow receiver.
- In the case of broadcast networks, this layer also controls access to the shared channel.
Updated on: 17-Jun-2020
1K+ Views
Advertisements