Computer Networks (CS-602) - Important Questions

Define computer network and explain its goals/importance, components, applications, and merits/demerits.

Compare the OSI reference model and the TCP/IP model, with diagrams.

Compare connection-oriented and connectionless services.

Explain the working principle of Go-Back-N ARQ and Selective Repeat ARQ protocols with examples.

Describe flow control techniques and compare Stop-and-Wait and Sliding Window protocols.

What do you mean by error detection? List its methods. An 8-bit data word with binary value 10101111 is to be encoded using an even-parity Hamming code. What is the binary value after encoding?

Compare CSMA/CD and CSMA/CA protocols.

Define Pure ALOHA and Slotted ALOHA and derive that efficiency of Slotted ALOHA is twice that of Pure ALOHA.

Explain MAC addressing, its format and functions. How is MAC address different from IP address?

Given the address block 211.17.180.0/24, create 32 subnets and find the subnet mask, number of addresses per subnet, and first and last addresses in the first and last subnets.

Compare IPv4 and IPv6 protocols, including their features, advantages and limitations.

Explain the working principle of the Bellman-Ford / Distance Vector routing algorithm with a suitable example.

Calculate the maximum throughput and line efficiency for TCP windows of 65535 B over a 1 Gbps channel with 10 msec one-way delay.

Compare the TCP header and the UDP header, listing TCP header fields not present in UDP and giving the reason for each.

Discuss TCP flow control and TCP congestion control mechanisms.

Explain Simple Network Management Protocol (SNMP), its architecture, working and functions.