BSIT42

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BSCIT 42

B.Sc. IT (Sem. IV) Examination, January, 2004

FUNDAMENTALS OF COMPUTER GRAPHICSTime: 3 Hours Max. Marks: 75

PART A

(15 X 1 = 15)1. Fill in the gaps:

a) Network of computer networks is known as __________________________.

b) A set of protocols which works together is termed as ___________________.

c) OSI reference model has ____________________________ layers.

d) Data link layer provides services to the _____________________________.

e) ASCII stands for _______________________________________.

f) IP transports data in packets called _____________________________.

g) ARP is a protocol in the _______________ layer of the TCP/IP model.h) Physical addresses can be either unicast, __________ or ___________________.

i) There are _______________ IP address classes.

j) _______________________ and ________________ are 2 types of IP routing.

k) Error reporting messages are ________________ messages.

l) Port number 53 used by UDP returns _______________ given the domain name.

m) ______________ provides reliable stream oriented process to process

communication.

n) A server issues a ______________ open while a client issues a ___________

open.

o) FTP uses port __________ for control connection and port _________ for data

connection.

2. Write any 2 of the following: (5 X 2 = 10)

a) Layers in the TCP/IP model.

b) Tasks performed by the transport layer.

c) Levels of addressing in TCP/IP.d) Error-reporting messages.

e) Services offered by TCP.

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PART B

Answer any five of the following questions : (5 X 10 = 50)

1. What are functions and services offered by the transport and presentation layer in the ODI Reference

Model.

2. List the layers in the TCP/IP model. Explain the Network and Transport layers.

3. a) Explain in brief the different internet addressing mechanism.

b) Differentiate between direct and indirect routing.

4. Write a note on RARP.

5. a) How is checksum calculated for the UDP datagram?

b) Discuss encapsulation and decapsulation mechanism in UDP.

6. Explain the 3-way-handshaking for connection establishment in TCP.

7. Discuss :a) Control connection in FTP.

b) Data connection in FTP.

8. Write a note on commands processing. Describe the groups into which commands can be divided.

BSIT 42

IV Semester B.Sc. (I.T.) Examination, July 2005

COMPUTER NETWORKS

Time: 3 Hours Max. Marks: 75

Instruction : Answerall questions from part A, and answer any five question From Part B.

PART A

1. What is protocol ? (10x2+5x1=25)

2. define IP addressing ?

3. What are multihomed devices.

4. Define IP datagram.

5. What is meant by routing.

6. Explain query messages.

7. What is meant by hand shaking ?

8. What are port numbers ?

9. What is called as lost segment.

10. Define checksum.

11. Expand the following terms:

a) TCP

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b) FTP

c) ARP

d) ICMP

e) UDP

PART B

Answer any five : (5x10=50)

1. Give an detailed account on OSI Protocols, architecture and the layers.

2. Explain the ARP address resolution protocols.

3. Give an detailed account on the internet protocols.

4. Explain in detail the functioning of a application layer with client server model.

5. What are the user datagram protocols ? Add a note on their significance.

6. List the error reporting messages present in ICMP.

7. What are the services offered by UDP? List some of its uses.8. Give an account on the role of network layer and session layers in the OSI model.

BSIT 42

IV Semester B.Sc. (I.T.) Examination, Dec 2005/ Jan 2006

COMPUTER NETWORKS



PART A

1. What is meant by Physical address ? (10x2+5x1=25)

2. What is in direct routing ?

3. Define process.

4. Explain encapsulation.

5. What is meant by port address.

6. Which layer in the network is the dialog controller?

7. What is meant by static routing table ?

8. Briefly fragmentation ?

9. Briefly explain types of ICMP messages.

10. Explain Multihomed devices.


a) RARP

b) IFTF

c) ICMP

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d) TCP

e) FTP.

PART B


1. What are the responsibilities of Network Layer? Explain .

2. Explain the different levels of addressing in TCP/IP Model.

3. Explain briefly about Unicast , Multicast and Broadcoast address.

4. Write the IP header diagram and explain its fields.

5. Explain the uses of UDP Protocol.

6. Explain UDP Checksum computation.

7. Explain the ARP Packet Format.

8. Write down the different types of ICMP Messages.

BSIT 42

IV Semester B.Sc. (I.T.) Examination, July/August 2006

COMPUTER NETWORKS



PART A

1. What is meant by IP address ? (10x2+5x1=25)

2. What is multi homed systems ?

3. Define checksum.

4. Explain Port Number.

5. Explain multiplexing and demultiplexing.

6. Explain IP Routing Table.

7. What is meant by Direct Routing ?

8. What are Protocols ?

9. Define Process.

10. Explain socked address.


a) ARP

b) WAN

c) ICMP

d) IRTF

e) FTP.

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PART B


1. Explain the OSI model with all its layers.

2. What are the responsibilities of network layer ? Explain.

3. Explain Fragmentation of Datagram and what are the steps followed to fragment the datagram.

4. Explain the IP address classes.

5. Explain ARP Packet Format.

6. Explain encapsulation and decapsulation mechanism used in UDP.

7. Explain TCP segment.

8. Explain UDP datagram.

BSIT 42IV Semester B.Sc. (I.T.) Examination, Dec. 2006/Jan. 2007 .

COMPUTER NETWORKS .Time: 3 Hours Max. Marks: 75

Instructions: Answer all questions from Part-A and answer any five

questions from Part-B.PART - A

1. What is meant by protocol architecture? (lOx2+5xl=25)

2. What is server-point addressing?

3. Define checksum.

4. Briefly explain Fragmentation.

5. Explain multiplexing and demultiplexing.

6. Explain IP Routing Table.

7. What is meant by Indirect Routing?

8. What are Protocols?

9. Define Process.

10. Explain encapsulation.


a) ARP

b) WAN

c) ICMP

d) IETF

e) FTP.

PART - B

Answer any five: (5x10=50)

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1. Explain the OSI model with all its layers.

2. What are the responsibilities of network layer? Explain.

3. Explain the IP address classes.

4. Explain ARP Packet Format.

5. Explain encapsulation and decapsulation mechanism used in UDP.6. Explain TCP segment.

7. Explain UDP datagram.

8. Write down the different types of ICMP Messages.

-------------------------

BSIT 42

IV Semester B.Sc. (I.T.) Examination, July/August 2007

COMPUTER NETWORKS



PART A

1. What is meant by protocol architecture ? (10x2+5x1=25)

2. What is peer to peer process ?

3. Explain canonical representation of Presentation layer.

4. Explain multicast and broadcast concepts.

5. Explain function of flags bits used in IP datagram.

6. Explain internet checksum.

7. Explain function port number ?

8. Explain function of URG and PSH flags in TCP header ?

9. Explain Encapsulation and De-capsulation.

10. Explain concurrency.


a) ARP

b) ICMP

c) TCP

d) SNMP

e) RIP

PART B


1. Explain the OSI-ISO network model.

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2. Explain the functionalities and the services offered by the transport layers of the OSI model.

3. Explain different addressing mechanisms used in TCP/IP model.

4. What are routing table ? Why it is required ?

5. Explain IP header diagram. Explain each field.

6. Explain RARP mechanism.

7. Explain pushing data operation in TCP.

8. Explain Client-server model.

BSIT42

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