Exam Details
| Subject | cmos vlsi design | |
| Paper | ||
| Exam / Course | computer science and engineering | |
| Department | ||
| Organization | Vardhaman College Of Engineering | |
| Position | ||
| Exam Date | May, 2018 | |
| City, State | telangana, hyderabad |
Question Paper
VARDHAMAN COLLEGE OF ENGINEERING
(AUTONOMOUS)
B. Tech VI Semester Regular Examinations, May 2018
(Regulations: VCE-R15)
COMPUTER NETWORKS
(Electronics and Communication Engineering)
Date: 14 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.
Explain guided and unguided media in detail.
8M
With a neat diagram, explain the OSI reference model.
7M
2.
What are the five layers in the Internet Protocol Stack? What are the principal responsibilities of each of these layers?
10M
A factor in the delay of a store-and-forward packet-switching system is how long it takes to store and forward a packet through a switch. If switching time is 10μsec, is this likely to be a major factor in the response of a client-server system where the client is in New York and the server is in California? Assume the propagation speed in copper and fiber to be 2/3 the speed of light in vacuum.
5M
Unit II
3.
Explain Sliding Window Protocol in detail.
8M
PPP is based closely on HDLC, which uses bit stuffing to prevent accidental flag bytes within the payload from causing confusion. Give at least one reason why PPP uses byte stuffing instead.
7M
4.
Explain slotted ALOHA protocol in detail.
8M
Store-and-forward switches have an advantage over cut-through switches with respect to damaged frames. Explain what it is?
7M
Unit III
5.
Explain IPv4 datagram format with diagram in detail.
10M
A router is blasting out IP packets whose total length (data plus header) is 1024 bytes. Assuming that packets live for 10sec, what is the maximum line speed the router can operate at without danger of cycling through the IP datagram ID number space?
5M
6.
What do you mean by congestion control? Explain the various approached of congestion control.
9M
Describe a way to reassemble IP fragments at the destination.
6M
Unit IV
7.
Imagine that a two-way handshake rather than a three-way handshake were used to set up connections. In other words, the third message was not required. Are deadlocks now possible? Give an example or show that none exist.
7M
Explain the following terms:
i. Nagle's algorithm
ii. Silly Window Syndrome
8M
8.
Explain TCP connection release process.
7M
Explain the concept of upward multiplexing and downward multiplexing.
8M
Unit V
9.
What is MIME header? Explain MIME header contents and its uses.
7M
Does Webmail use POP3, IMAP, or neither? If one of these, why was that one chosen? If neither, which one is it closer to in spirit?
8M
10.
Explain the DNS resource record type in detail.
8M
Write a short note on electronic mail.
7M
(AUTONOMOUS)
B. Tech VI Semester Regular Examinations, May 2018
(Regulations: VCE-R15)
COMPUTER NETWORKS
(Electronics and Communication Engineering)
Date: 14 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.
Explain guided and unguided media in detail.
8M
With a neat diagram, explain the OSI reference model.
7M
2.
What are the five layers in the Internet Protocol Stack? What are the principal responsibilities of each of these layers?
10M
A factor in the delay of a store-and-forward packet-switching system is how long it takes to store and forward a packet through a switch. If switching time is 10μsec, is this likely to be a major factor in the response of a client-server system where the client is in New York and the server is in California? Assume the propagation speed in copper and fiber to be 2/3 the speed of light in vacuum.
5M
Unit II
3.
Explain Sliding Window Protocol in detail.
8M
PPP is based closely on HDLC, which uses bit stuffing to prevent accidental flag bytes within the payload from causing confusion. Give at least one reason why PPP uses byte stuffing instead.
7M
4.
Explain slotted ALOHA protocol in detail.
8M
Store-and-forward switches have an advantage over cut-through switches with respect to damaged frames. Explain what it is?
7M
Unit III
5.
Explain IPv4 datagram format with diagram in detail.
10M
A router is blasting out IP packets whose total length (data plus header) is 1024 bytes. Assuming that packets live for 10sec, what is the maximum line speed the router can operate at without danger of cycling through the IP datagram ID number space?
5M
6.
What do you mean by congestion control? Explain the various approached of congestion control.
9M
Describe a way to reassemble IP fragments at the destination.
6M
Unit IV
7.
Imagine that a two-way handshake rather than a three-way handshake were used to set up connections. In other words, the third message was not required. Are deadlocks now possible? Give an example or show that none exist.
7M
Explain the following terms:
i. Nagle's algorithm
ii. Silly Window Syndrome
8M
8.
Explain TCP connection release process.
7M
Explain the concept of upward multiplexing and downward multiplexing.
8M
Unit V
9.
What is MIME header? Explain MIME header contents and its uses.
7M
Does Webmail use POP3, IMAP, or neither? If one of these, why was that one chosen? If neither, which one is it closer to in spirit?
8M
10.
Explain the DNS resource record type in detail.
8M
Write a short note on electronic mail.
7M
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