IV SEMESTER B.C.A. EXAMINATION MAY 2011
Y2K8 SCHEME
COMPUTER SCIENCE
BCA 404 : DATA COMMUNICATION AND NETWORKS
Time : 3Hours Max.Marsk: 90
Instruction : Answer all sections
SECTION-A
Answer any ten questions.Each question carries two maarks. 2 X 10 = 20
1.Define network topology.Whar are the factors that must be considered while making a
choice of particular topology ?
2.What is a protocol ? Give one example ?
3.Expand TELNET and what for it is used ?
4.whar are the basic characteristics of digital signals ?
5.List any two differences between twisted pair and coaxial cable.
6.Calculate the even parity bit for the following group of data bits.
i) 1010111
ii) 1110111
7,.What is pipelining ?
8.What do you mean by framing ?
9.What is ALOHA ?
10.Compare FDMA ,TDMA ?
11.Write a short note on FDDI ?
12.What is Packet Switching ?
SECTION-B
Answer any five question. Each question carries 5 marks. 5 X 5 = 25.
13.Explain the evolution of network architecture.
14.What are the various TCP/IP diagnostic utilities ?
15.Define Time domain and Frequency domain with the representation of any two frequency signals.
16.what is multiplexing ?What are the differenet types of multiplexing ?
17.How go back ' n ' is different from selective repeat method ?
18.what is the role of CSMA/CD in multi access protocol ?
19.what is bridge and explain any two types of bridges ?
20.what is routing table ? Why is required ?
SECTION - C
Answer any three questions.Each question carries 15 marks. 15X3=45
21.a)What are the various goals of computer Network ?
b)Explain Switching and Forwarding techniques with a neat diagram . 7 + 8
22.a) Explain the transmission characteristics of coaxial cable.
b) Write algorithm of CRC method and Error detection with an example 6 + 9
23.a) Explain the functionally of data link layer.
b) How does channelization protocols support multiple access protocol ? 7 + 8
24,a) Explain the Working and Frame format of Token ring .
b) With a neat Diagram.Explain the working of SONET. 7 + 8
25.Write a short notes on :
a) Nyquist Signalling rate.
b)Virtual circuits.
c) Congestion control Algorithms. 5 + 5 + 5
Y2K8 SCHEME
COMPUTER SCIENCE
BCA 404 : DATA COMMUNICATION AND NETWORKS
Time : 3Hours Max.Marsk: 90
Instruction : Answer all sections
SECTION-A
Answer any ten questions.Each question carries two maarks. 2 X 10 = 20
1.Define network topology.Whar are the factors that must be considered while making a
choice of particular topology ?
2.What is a protocol ? Give one example ?
3.Expand TELNET and what for it is used ?
4.whar are the basic characteristics of digital signals ?
5.List any two differences between twisted pair and coaxial cable.
6.Calculate the even parity bit for the following group of data bits.
i) 1010111
ii) 1110111
7,.What is pipelining ?
8.What do you mean by framing ?
9.What is ALOHA ?
10.Compare FDMA ,TDMA ?
11.Write a short note on FDDI ?
12.What is Packet Switching ?
SECTION-B
Answer any five question. Each question carries 5 marks. 5 X 5 = 25.
13.Explain the evolution of network architecture.
14.What are the various TCP/IP diagnostic utilities ?
15.Define Time domain and Frequency domain with the representation of any two frequency signals.
16.what is multiplexing ?What are the differenet types of multiplexing ?
17.How go back ' n ' is different from selective repeat method ?
18.what is the role of CSMA/CD in multi access protocol ?
19.what is bridge and explain any two types of bridges ?
20.what is routing table ? Why is required ?
SECTION - C
Answer any three questions.Each question carries 15 marks. 15X3=45
21.a)What are the various goals of computer Network ?
b)Explain Switching and Forwarding techniques with a neat diagram . 7 + 8
22.a) Explain the transmission characteristics of coaxial cable.
b) Write algorithm of CRC method and Error detection with an example 6 + 9
23.a) Explain the functionally of data link layer.
b) How does channelization protocols support multiple access protocol ? 7 + 8
24,a) Explain the Working and Frame format of Token ring .
b) With a neat Diagram.Explain the working of SONET. 7 + 8
25.Write a short notes on :
a) Nyquist Signalling rate.
b)Virtual circuits.
c) Congestion control Algorithms. 5 + 5 + 5
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