M.
Tech in Computer Science and Engineering I SEMESTER COMPUTER NETWORKS
Subject Code: 12SCS11 I.A. Marks : 50
Hours/Week : 04 Exam Hours: 03
Total Hours :
52
Exam Marks: 100
1. Review of Basic Concepts: Building a Network; Requirements- Connectivity, Cost-Effective Resource Sharing, Support for Common Services; Network Architecture- Layering and Protocols, OSI Architecture, Internet
Architecture; Performance- Bandwidth and Latency, Delay× Bandwidth Product, High-Speed Networks.
2. Direct link networks: Hardware Building Blocks-nodes, links; error Detection- Two-Dimensional Parity, Internet
checksum Algorithm, cyclic Redundancy Check; reliable
Transmission- Stop-and-Wait, Sliding Window, Concurrent Logical Channels; Rings (802.5, FDDI) –Token Ring Media Access Control, Token Ring Maintenance, FDDI.
3. Packet Switching: Switching and forwarding – Datagrams,Virtual Circuit Switching, Source Routing; Bridges and
LAN
Switches – Learning Bridges, Spanning Tree Algorithm, Broadcast and Multicast, Limitations of Bridges; cell
switching (ATM) – Cells, Segmentation and Reassembly, Virtual Paths, Physical Layers for ATM.
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5. End –to-End Protocols: Simple demultiplexer (UDP); Reliable byte stream (TCP) –
End-to-End Issues, Segment Format, Connection Establishment and Termination, Sliding Window Revisited, Triggering Transmission, Adaptive
Retransmission, Record Boundaries, TCP Extensions, Alternative Design Choices.
6. Congestion
Control
and Resource
Allocation: Issues in resource allocation
– Network Model,
Taxonomy, Evaluation
Criteria; Queuing discipline –
FIFO, Fair
Queuing; TCP
Congestion
Control – Additive
Increase/Multiplicative
Decrease, Slow Start, Fast
Retransmit and Fast Recovery; Congestion-Avoidance mechanisms – DECbit, Random Early Detection (RED), Source-Based Congestion Control.
7. Applications: Traditional applications – Electronic Mail (SMTP, MIME, IMAP), World Wide Web (HTTP), Name
Service (DNS), Network management (SNMP); Web services – Custom APPLICATION Protocols (WSDL, SOAP), A Generic application Protocol (REST).
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