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Tuesday, 25 August 2020

IGNOU BCA BCS-052 term-end exam notes,upcoming guess papers,important questions free download

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IGNOU BCA BCS-052 term-end exam notes,upcoming guess papers,important questions free download



IGNOU BCA BCS-052 5th semester Term-End Examination (NETWORK PROGRAMMING AND ADMINISTRATION) books/block,term-end exam notes,upcoming guess paper,important questions,study materials,previous year papers download.

                                                                  Notes-1



1. (a) What is the maximum capacity of datagram that can be carried by Internet Protocol ? Also, explain how IP data grams are deleted from the network.
(b) What is meant by socket ? Write the differences between active and passive sockets.
(c) Differentiate between ARP and RARP.
(d) How does TCP handle "out-of-order" segments ? Explain.
(e) What is the significance of the "Time to Live" value in an IP header ? Explain.
(f) Explain the various components of a URL using an example.
(g) Why does lost acknowledgement not necessarily force the retransmission of TCP segment ?
(h) Explain the Remote login process of TELNET.
(i) What is the reserve bit pattern of the first byte for a Class D address ?

2. (a) How is flow control managed in TCP ? Explain the Sliding Window Protocol using an example.
(b) Explain the purpose of the following fields of the TCP and IP :
(i) Urgent Pointer
(ii) Window Size
(iii) Sequence Number
(iv) Fragment Offset

3. (a) What is meant by Byte ordering ? For what purpose are the following functions used ? Explain using an example of each.
(i) htons
(ii) htonl
(iii) ntohs
(iv) ntohl
(b) An IP address has arrived with the following first 16 bits of information in the header (binary format) as given below :
0 1 0 0 0 1 0 1 0 11 0 1 1 0 1 x x x
Answer the following :
(i) What is the size of the header ?
(ii) Are there any options?
(iii) What is the precedence of Datagram ?
(iv) What type of service does this datagram contain ?

4. (a) Write the syntax and uses of "useradd" command in Linux.
(b) Write an algorithm each for TCP client and TCP server, where the connection request from the client prompts the server to send the system date and time to the client for which the client will send an acknowledgement.

5. Write short notes on the following :
(a) DHCP
(b) VPN
(c) HTTP

(d) Voice over IP

                                                              Notes-2


1. (a) Do port addresses at transport layer need to be unique ? Why or why not ? Why are port addresses shorter than IP addresses ?
(b) What is ARP ? How does it differ from RARP and BOOTP ? Explain.
(c) Which field in IP header is used for congestion control and how ? Explain.
(d) Draw the block diagram of DNS. Explain the purpose of various fields used in DNS message format.
(e) In electronic mail, what is MIME ? Explain its purpose and functionality.
(f) How is checksum in TCP header computed ? Give an example to explain it.
(g) Why is layering of the protocols done in TCP/IP stack ?
(h) Differentiate between FAT 16 and FAT 32.

2. (a) Explain the purpose and importance of the following header fields of TCP and IP protocols :
(i) Protocol
(ii) Sequence Number
(iii) Version
(iv) Type of Service
(b) What is the purpose of byte ordering in network communication ? Also, write the functions used for byte ordering.

3. Write an algorithm each for UDP client and UDP server with the following specifications :
• Client should prompt a user to enter two numbers.
• Client program will send these numbers to the server.
• Server program will be able to handle many clients concurrently.
• Once server program receives the numbers,it will find the largest number and send it back to the respective client.

4. (a) What is the size of TCP header ? How many packets are exchanged in setting up a TCP connection ?
(b) Identify the class of the following IP addresses :
(i) 2.200.100.100
(ii) 130.10.120.240
(iii) 196.10.10.2
(iv) 208.10.18.203
(c) Write the syntax along with the parameters used by the following system calls :
(i) accept ( )
(ii) listen ( )
(iii) send ( )
(iv) shutdown ( )

5. Write short notes on the following :
(a) Network Monitoring Tools
(b) FreeNX
(c) Cloud Computing
(d) Name Servers

                                                                   Notes-3


1. (a) Assume a subnet mask 255.255.0.0 is assigned to an address of Class B. How many hosts are possible per subnet and how many subnets are possible ?
(b) How does TCP handle out-of-order segment ? Explain the procedure with a suitable diagram.
(c) The size of the option field of an IP datagram is 20 bytes. What is the value of HLEN field ?
(d) Explain the Distance vector routing algorithm with an example.
(e) Explain the working of ARP and RARP using suitable diagram for each.
(f) What is the importance of ICMP at Network layer ? Explain the reports generated by ICMP.

2. Write an algorithm (using Socket Programing System Calls) for TCP client and TCP server
each, as per the following specifications : (Make suitable assumptions, if any)
(a) Client will start communication and establish connection. It will send a list of numbers to the TCP server.
(b) TCP server, which can handle maximum 3 clients concurrently, will accept the list and send back the smallest number. Server will terminate this connection once the number is sent.

3. (a) How does a DNS server work ? Explain with help of a suitable example for recursive and iterative solutions.
(b) What is SNMP ? Explain the different security levels implemented in SNMP.

4. (a) What are the different remote network administration tools ? Explain the features of each.
(b) Discuss the activities between DHCP server and DHCP client.

5. Differentiate between the following :
(a) htons( ) and ntohs( ) System Call
(b) Supernet and Subnet
(c) read( ) and write( ) System Call
(d) Broadcasting and Multicasting

IGNOU BCA BCS-052 5th semester Term-End Examination (NETWORK PROGRAMMING AND ADMINISTRATION) term-end exam notes Download    

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