JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year DATA COMMUNICATION AND COMPUTER NETWORKS Previous Question Paper (May/June - 2019 - R16)
Part A is compulsory (25 Marks). Part B consists of 5 Units. Answer any one full question from each unit (10 Marks each).
Part A
List out the topologies used in networks.
Answer
- Mesh Topology
- Star Topology
- Bus Topology
- Ring Topology
- Tree Topology
- Hybrid Topology
Differentiate circuit switched networks and datagram networks.
Answer
| Feature | Circuit Switched | Datagram Network |
|---|---|---|
| Connection | Dedicated path established | No dedicated path |
| Data Delivery | In-order delivery | Out-of-order possible |
| Setup Phase | Required | Not required |
Explain flow control.
Answer
Sign in to view the complete answer paper.
Describe the differences between PPP and HDLC.
Answer
Sign in to view the complete answer paper.
Differentiate broadcasting and flooding.
Answer
Sign in to view the complete answer paper.
Define tunneling.
Answer
Sign in to view the complete answer paper.
Differentiate between TCP and UDP.
Answer
Sign in to view the complete answer paper.
Why three way handshake is used in TCP.
Answer
Sign in to view the complete answer paper.
What is the use of FTP?
Answer
Sign in to view the complete answer paper.
What is the header format of HTTP reply message?
Answer
Sign in to view the complete answer paper.
Part B
Explain the ATM reference model and describe the functions performed by each layer.
Answer
Sign in to view the complete answer paper.
What are the advantages and disadvantages of ring topology?
Answer
Sign in to view the complete answer paper.
Elicit types of transmission media with their merits and demerits.
Answer
Sign in to view the complete answer paper.
Describe the characteristics of layered architecture.
Answer
Sign in to view the complete answer paper.
What are the different types of error detection methods? Explain the CRC error detection technique using generator polynomial
Answer
Sign in to view the complete answer paper.
Explain the CSMA schemes with diagrams.
Answer
Sign in to view the complete answer paper.
Elucidate PCF and DCF in 802.11 format.
Answer
Sign in to view the complete answer paper.
A very heavily loaded 1 km long, 10-Mbps token ring has propagation speed of 200m/μsec. Fifty stations are uniformly spaced around the ring. Data frames are 256-bits, including 32 bits of overload. Is the effective data rate of this higher or lower than the effective data rate of a 10-Mbps CSMA/CD NETWORK?
Answer
Sign in to view the complete answer paper.
Differentiate DVR and OSPF.
Answer
Sign in to view the complete answer paper.
How count to infinity problem is resolved in DVR.
Answer
Sign in to view the complete answer paper.
Explain ARP and RARP with examples.
Answer
Sign in to view the complete answer paper.
What is purpose of ICMP? Explain its messages in detail.
Answer
Sign in to view the complete answer paper.
Explain the features and applications of UDP.
Answer
Sign in to view the complete answer paper.
Elucidate congestion control in datagram subnets.
Answer
Sign in to view the complete answer paper.
Elucidate the congestion prevention policies.
Answer
Sign in to view the complete answer paper.
Explain the TCP header fields in detail.
Answer
Sign in to view the complete answer paper.
What is an Electronic mail? Explain the two scenarios of architecture of E-Mail.
Answer
Sign in to view the complete answer paper.
Explain the architecture of WWW. Discuss client and server side functionality of this architecture.
Answer
Sign in to view the complete answer paper.
What is SNMP? Briefly discuss the SNMP model components.
Answer
Sign in to view the complete answer paper.
What is the use of DNS? Explain how it works?
Answer
Sign in to view the complete answer paper.