Name of Subject  COMPUTER NETWORKS  (6 IT 2)

Unit

Contents

Network, Network Protocols, Edge, Access Networks and Physical Media, Protocol Layers and their services

I

models, Internet Backbones, NAP's and ISPs.

Application Layer: Protocol and Service Provided by application layer, transport protocols. The world wide web.

HTTP, Message formats, User Server Interaction and Web caches. FTP commands and replies. Electronic Mail,

II

SMTP, Mail Message Formats and MIME and Mail Access Protocols DNS The internet's directory service DNS

records and Message.

Transport Layer: Transport Layer Service and Principles, Multiplexing and Demultiplexing applications,

connectionless Transport. UDP Segment structure and UDP Checksum. Principles of Reliable Data Transfer-Go

III

back to N and Selective Repeat. Connection Oriented Transport TCP Connection and Segment Structure,

Sequence Numbers and acknowledgement numbers, Telnet, Round trip time and timeout. TCP connection

management.

Network Layer and Routing: Network service model, Routing principles. Link State routing Algorithm, A distant

Vector routing & OSPF algorithm. Router Components; Input Prot, Switching fabric and output port. IPV6 Packet

IV

format. Point To Point Protocol (PPP), transition States, PPP Layers-Physical Layer and Data Link Layer, Link

Control Protocols. LCP Packets and options. Authentication PAP and CHAP, Network Control Protocol (NCP).

Sonet/SDH:Synchronous Transport Signals. Physical configuration-SONET Devices, Sections, Lines and Paths.

V

SONET Layers-Photonic Layer, section layer, line layer, path layer and device layer relationship. Sonnet Frame