IGNOU BCA BCS-041 Study Materials/Notes

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BCS-041 : FUNDAMENTAL OF COMPUTER NETWORKS

(1.) Compare Hub and Switch. Give to the advantages and disadvantages of both Hub and Switch. Briefly discuss to the functions of layer-2 switch and layer-3 switch.

(2.) Write the components of Address field in the Frame Relay Protocol Data Unit (PDU). Also, explain the significance of each component.

(3.) Write the step-by-step working of Link State Routing. Also, compare it with Distance Vector Routing.

(4.) Discuss the concept of Sliding Window Protocols with the help of an example. Also, explain how piggybacking technique works.

(5.) Explain POP and IMAP. How does POP work ? What are to the advantages of IMAP over POP ?

(6.) Assume Data frame is 1101011011 and generator polynomial, G(x) is x 4 + x + 1. Calculate the transmitted frame using CRC method.

(7.) Compare between CSMA/CD and Ethernet protocol. How does like the CSMA/CD resolve the problem of line connection ? Explain.

(8.) Draw the format of IP Header and explain the significance of each field.

 (9.) Discuss circuit switching and packet switching methods. Also, discuss their merits and demerits.

(10.) Assume two prime numbers p and q are 3 and 5 respectively. Calculate to the private key and public key using RSA algorithm.

(11.) Write short notes on the following :

(a) ATM Cell

(b) GSM Architecture

(c) OSI Model

(d) Frequency Modulation

(12.) Write any four differences between analog  and digital systems.

(13.) Justify to  the statement "Slotted ALOHA  achieves double efficiency than pure ALOHA".

(14.) How is CRC code used for error detection  in digital networks ? Give an example toM illustrate your answer.

(15.) Compare there are contrast between "Peer to  Peer" and "Client Server" Networking.

(16.) Explain the count to infinity problem with  help of an example.

(17.) Define silly window syndrome at transport layer ? Explain.

(18.) Write any five advantages of frame relay over X.25 architecture.

(19.) Differentiate between public-key and private-key cryptography.

 (20) What is MD5 ? Write the steps for MD5  algorithm.

(21.) Compare 1G, 2G and 3G wireless  generations based on following criteria :

(i) Communication method

(ii) Modulation Technique

(iii) Services

(iv) Channel Assignment

 (22.) Discuss distance vector routing with help of a subnet topology. Discuss what are

different matrices used in the distance vector routing algorithm.

(23.) What are the various methods in HTTP ?  Explain the use of any four methods.

(24.) Write the role of Data link layer in OSI  model. Explain the services and functions provided by Data link layer. Also, explain the importance of its sublayers.

(25.) Explain the importance and functions of  layer 2 and layer 3 switches. Also, write

advantages and disadvantages of each.

(26.) Write to the   short notes on the following :

(a) RSA algorithm

(b) IP address classes

(c) Fiber optic cables

(d) Time Division Multiplexing

(27.) Why is serial data transmission faster than parallel data transmission ? Explain.

(28.) What is better for computer communication — analog or digital ? Justify your answer.

(29.) Why are 'Hash functions' called 'one-way functions' ? Explain.

(30.) Differentiate between SVC and PVC of X.25. 5

(31.) Write the steps of Distance Vector Routing Algorithm. Give an example to show its working.

 (32.) What is Windowing ? How is the flow control and reliability achieved through windowing at transport layer ?

(33.) Write a difference between pure ALOHA and slotted ALOHA. If  to like the throughput of pure ALOHA is S = Ge-2G, show that the maximum throughput (S ma.) is 0-184.

(34.) Explain the working of 3-way handshake used in TCP, using a suitable diagram.

(35.) Calculate CRC, if the message is x 7 + x5 + and the generator polynomial is x3 + 1.

(36.) Explain the working of ARP using a diagram. How is it different from RARP ? Explain.

 (37.) Explain RSA algorithm with example.

(38.) What is the difference between classful addressing and classless addressing ? How

does to the  classless addressing result in decrease in the table size ?

(39). Write short notes on the following :

(a) Frame Relay

(b) Fiber Optics Cables

(c) IMAP and POP

(d) OSI Model

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