CS602 Computer Networks Unit 3 study material for RGPV CSE 6th Semester. This unit covers MAC Sub Layer, ALOHA, CSMA, CSMA/CD, CSMA/CA, Ethernet, Wireless LAN, ARP, RARP, BOOTP and DHCP.
Unit 3 explains how multiple devices share the same communication medium. It focuses on Medium Access Control protocols, Ethernet, Wireless LAN and address resolution protocols used in real networks.
Learn Pure ALOHA and Slotted ALOHA protocols with their working, efficiency and collision handling.
Understand CSMA, CSMA/CD and CSMA/CA methods used for controlling access to shared channels.
Study Ethernet standards, Wireless LAN architecture, ARP, RARP, BOOTP and DHCP protocols.
Complete syllabus-based topics of CS602 Computer Networks Unit 3.
Functions and responsibilities of Medium Access Control Sub Layer.
Random access protocol where stations transmit whenever data is available.
Improved ALOHA protocol where time is divided into equal slots.
Carrier Sense Multiple Access and its 1-persistent, non-persistent and p-persistent types.
Collision Detection method mainly used in traditional Ethernet networks.
Collision Avoidance method used in wireless networks.
IEEE 802.3 standard, Ethernet architecture, frame format and working.
IEEE 802.11 architecture, working and basic wireless communication concepts.
Protocols used for address resolution between IP address and MAC address.
Network configuration protocols used for assigning IP addresses and related settings.
Upload your PDFs in the pdfs folder with the same file names used below.
These questions are useful for 7 marks and 14 marks answers in RGPV exams.
MAC (Medium Access Control) Sub Layer is a part of the Data Link Layer that controls how devices access and share a common communication medium.
Slotted ALOHA is more efficient because transmissions occur only at specific time slots, reducing collisions.
CSMA/CD helps detect collisions in Ethernet networks and retransmits frames after a random delay.
DHCP automatically assigns IP addresses and network settings to devices, reducing manual configuration.
Based on previous RGPV examinations, these topics are repeatedly asked.
| Topic | Exam Frequency | Importance |
|---|---|---|
| Pure ALOHA | High | ⭐⭐⭐⭐⭐ |
| Slotted ALOHA | High | ⭐⭐⭐⭐⭐ |
| CSMA/CD | Very High | ⭐⭐⭐⭐⭐ |
| CSMA/CA | High | ⭐⭐⭐⭐ |
| Ethernet Frame Format | Very High | ⭐⭐⭐⭐⭐ |
| ARP & RARP | Medium | ⭐⭐⭐⭐ |
| DHCP | High | ⭐⭐⭐⭐⭐ |
| Wireless LAN | Medium | ⭐⭐⭐⭐ |
ALOHA, CSMA/CD, Ethernet and DHCP are frequently asked topics in RGPV examinations.
Networking concepts such as MAC addressing, Ethernet and DHCP are commonly asked in placement interviews.
Ethernet, Wireless LAN and DHCP are widely used in modern enterprise and cloud networks.