IT502 Unit 2
Computer Networks

Data Link Layer

Unit 2 Study Material

Download detailed notes, important questions and PYQ analysis for IT502 Computer Networks Unit 2.

📡 Data Link

Provides reliable node-to-node data transfer using frames.

🔁 ARQ

Automatic Repeat Request handles error control and retransmission.

📶 MAC

Media Access Control manages channel sharing in LAN networks.

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Detailed Notes

Complete notes on data link layer design issues, framing, flow control, error control, physical addressing, Stop and Wait protocol, Go Back N ARQ, Selective Repeat ARQ, piggybacking, pipelining, HDLC and LAN protocol stack.

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Important Questions

Important RGPV questions on Stop and Wait, Go Back N ARQ, Selective Repeat ARQ, HDLC, ALOHA, CSMA, IEEE 802.3, IEEE 802.4, IEEE 802.5 and FDDI.

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PYQ Analysis

Previous year questions and repeated topics from Computer Networks Unit 2 for quick exam revision.

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Unit 2 Topics

Data Link Layer
Data Link Layer Design Issues
Framing
Flow Control
Error Control
Physical Addressing
Stop and Wait Protocol
Go Back N ARQ
Selective Repeat ARQ
Piggybacking
Pipelining
HDLC
LAN Protocol Stack
Logical Link Control
Media Access Control
IEEE 802.2 LLC Frame Format
MAC Layer Protocols
Static Channel Allocation
Dynamic Channel Allocation
Pure ALOHA
Slotted ALOHA
Carrier Sense Multiple Access
Persistent CSMA
Non Persistent CSMA
IEEE 802.3
IEEE 802.4
IEEE 802.5
FDDI