AD-602 Computer Networks Notes
5 notes for Computer Networks, unit by unit.
Notes for AD-602
- Unit 1 · Short notes Computer Network Fundamentals and Physical Layer Definitions, goals, components, Architecture, Classifications & Types · Layered Architecture: Protocol hierarchy, Design Issues, Interfaces and Services, Connection‑Oriented & Connectionless Services, Service primitives, Design issues & its functionality · ISO/OSI Reference Model: Principle, Model, Descriptions of various layers and its comparison with TCP/IP · Principles of Physical Layer: Media, Bandwidth, Data rate and Modulations
- Unit 2 · Short notes Data Link Layer and MAC Sub‑layer Need, Services Provided, Framing, Flow Control, Error control · Data Link Layer Protocols: Elementary & Sliding Window protocols – 1‑bit, Go‑Back‑N, Selective Repeat, Hybrid ARQ · MAC Sub‑layer: MAC Addressing, Binary Exponential Back‑off (BEB) Algorithm, Distributed Random Access/Contention Schemes – ALOHA, Slotted ALOHA, CSMA, CSMA/CD, CSMA/CA · IEEE 802 series standards and their variants
- Unit 3 · Short notes Network Layer and Routing Need, Services Provided, Design issues · Routing algorithms: Least Cost Routing, Dijkstra's algorithm, Bellman‑Ford algorithm, Hierarchical Routing, Broadcast Routing, Multicast Routing · IP Addresses, Header format, Packet forwarding, Fragmentation and reassembly, ICMP · Comparative study of IPv4 & IPv6
- Unit 4 · Short notes Transport Layer Design Issues · UDP: Header Format, Per‑Segment Checksum, Carrying Unicast/Multicast Real‑Time Traffic · TCP: Connection Management, Reliability of Data Transfers, Flow Control, Congestion Control, Header Format, Timer Management
- Unit 5 · Short notes Application Layer and Network Security WWW and HTTP, FTP, SSH, Email (SMTP, MIME, IMAP), DNS, Network Management (SNMP) · Network Security: Introduction to security, Traditional Ciphers, Modern Ciphers, Message Integrity and Authentication