Computer Network
Unit-5
Lecture Videos
Unit-5 Syllabus
UNIT V:
The Transport Layer: Transport layer protocols: Introduction, services, port number, User data gram
protocol, User datagram, UDP services, UDP applications, Transmission control protocol: TCP services,
TCP features, Segment, A TCP connection, windows in TCP, flow control, Error control, Congestion
control in TCP.
Application Layer: World Wide Web: HTTP, Electronic mail, Architecture, web based mail, email
security, TELENET, local versus remote Logging, Domain Name System: Name Space, DNS in
Internet,Resolution, Caching, Resource Records, DNS messages, Registrars, security of DNS Name Servers,
SNMP.