Computer Networks

Unit I

Introductory Concepts & Physical Layer: Goals and Applications of Networks, Categories of Networks, Organization of the Internet, ISP, Network Structure and Architecture (Layering Principles, Services, Protocols and Standards), OSI Reference Model, TCP/IP Protocol Suite, Network Devices and Components. Physical Layer: Network Topology Design, Types of Connections, Transmission Media, Signal Transmission and Encoding, Network Performance and Transmission Impairments, Switching Techniques and Multiplexing.

Unit II

Link Layer & MAC: Framing, Error Detection and Correction, Flow Control (Elementary Data Link Protocols, Sliding Window Protocols). Medium Access Control and LANs: Channel Allocation, Multiple Access Protocols, LAN Standards, Link Layer Switches & Bridges (Learning Bridge and Spanning Tree Algorithms).

Unit III

Network Layer: Point-to-Point Networks, Logical Addressing, Basic Internetworking (IP, CIDR, ARP, RARP, DHCP, ICMP), Routing, Forwarding and Delivery, Static and Dynamic Routing, Routing Algorithms and Protocols, Congestion Control Algorithms, IPv6.

Unit IV

Transport Layer: Process-to-Process Delivery, Transport Layer Protocols (UDP and TCP), Multiplexing, Connection Management, Flow Control and Retransmission, Window Management, TCP Congestion Control, Quality of Service.

Unit V

Application Layer: Domain Name System, World Wide Web and HTTP, Electronic Mail, File Transfer Protocol, Remote Login, Network Management, Data Compression, Cryptography — Basic Concepts.