B.TECH - Semester 6 pc hardware and interfacing Question Paper 2020 (jan)
Practice authentic previous year university questions for better exam preparation.
- Explain about OSI reference model and the functions of the layers that handle the following situations (a) Responsible for carrying frames between adjacent nodes.
- Explain about OSI reference model and the functions of the layers that handle the following situations (b) Mechanical, Electrical and Functional interface.
- Explain about OSI reference model and the functions of the layers that handle the following situations (c) Error correction and Retransmission.
- Explain about OSI reference model and the functions of the layers that handle the following situations (d) Determining which route in the network to use.
- Explain about OSI reference model and the functions of the layers that handle the following situations (e) Providing control structures for communication between applications.
- Explain the advantages of UDP over TCP. The following is a dump of a UDP header in hexadecimal format. 063200 OD 00 1C E2 17 (a) What is the source port number?
- Explain the advantages of UDP over TCP. The following is a dump of a UDP header in hexadecimal format. 063200 OD 00 1C E2 17 (b) What is the destination port number?
- Explain the advantages of UDP over TCP. The following is a dump of a UDP header in hexadecimal format. 063200 OD 00 1C E2 17 (c) What is the length of the data? $$ \text { ( } 5 \times 4=20 \text { Marks) } $$ Answer any one full questions out of the two from each Module.
- Find the $1^{\text {st }}$ address, number of address and last address for the following IP address. (a) 190.87.140.202129
- Find the $1^{\text {st }}$ address, number of address and last address for the following IP address. (b) 140.120 .84 .24120
- What is meant by bit stuffing? A bit string 01111011111011111110 need to be transmitted by the data link lank kayer. What is the string actually transmitted after bit stuffing?
- Discuss on Bluetooth technology.
- How do ICMP redirection messages help the routers to change the route?
- (a) Give the comparsion between LAN, MAN and WAN with an example.
- (b) Draw the sequence diagram between the sender and the receiver using the different sliding window ARQ for the following frame movements.
- (i) Frame 0 is sent and frame 0 is acknowledged (ii) Frames 1 and 2 are sent. Frames 1 and 2 are acknowledged. (iii) Frames 3, 4 and 5 are sent. NAK 4 is received. (iv) Frames 4, 5, 6 and 7 are sent. Frames 4 through 7 are acknowledged.
- (a) Explain in detail about the access method and frame format used in Wireless LAN. What is hidden and exposed station problems in IEEE 802.11?
- (b) Consider the network shown in the Figure below. Show the operation of Link State algorithm for computing the least cost path from D to all destinations. 10
- (a) Explain the Frame Format and working of IEEE 802.3 standard.
- (b) Describe the access method used by Ethernet protocol. In a CSMA/CD network with a data rate of 10 Mbps , there exists 4 stations A,B,C, and D, The distance between station A and C is 2500 m and the propagation speed is $2 \times 10^{8} \mathrm{~m} / \mathrm{s}$. Station A starts sending a long f...
- (a) Explain TCP congestion control mechanisms with neat diagram.
- (b) State the differences between classful addressing and classless addressing in IPv4. How do the subnet mask and super net mask differ from a default mask in classful addressing? Explain why most of the addresses in class A are wasted and why a medium size or large size corporation does not want b...
- (a) A university has 100 LANs with 200 hosts in each LAN. Suppose the university has one class B address.
- (i) Design an appropriate subnet addressing scheme. (ii) Design an appropriate CIDR addressing scheme.
- (b) Explain about BGP and OSPF.
- (a) Discuss in detail about the role of DNS in finding the IP address of a destination. 10
- (b) Discuss briefly about MIME protocol. 10
- Draw the format of TCP Header and explain the fields in detail and also explain the full duplex connection establishment procedure followed in TCP with suitable diagrams.
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