IMG_20171024_132830.jpg - (Please write your Exam Roll No END TERM EXAMINATION Paper Code MCA-207 THIRD SEMESTER[MCA DECEMBER 2013 Time 3 Hours Subject

IMG_20171024_132830.jpg - (Please write your Exam Roll No...

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Unformatted text preview: (Please write your Exam Roll No.) END TERM EXAMINATION Paper Code: MCA-207 THIRD SEMESTER [MCA] DECEMBER 2013 Time: 3 Hours Subject: Data Communication & Networking Maximum Marks: 50 Note: Attempt five questions in all one from each unit, Q. No. 1 is compulsory Q.1 a) Differentiate between half duplex and full duplex transmission mode. b) Difference between port address, logical address and physical address 2416 - 20 c) Why do we need protocols. Which is the protocol of Internet d) Explain Bluetooth technology. e) How congestion can be prevented and removed f) Compare and contrast PCM and DM. g) Define subnetting and supernetting. h) Explain DNS system. i) Differentiate between error correction and detection j) Compare and contrast PPP and HDLC. UNIT 1 Q.2 a) Categorize the four basic topologies in term of line configuration. b) Explain Manchester and Differential Manchester scheme, Draw the graph using the following data streams - 11111111, 00001 100, 01010101. Q.3 OR Explain the OSI model. How are OSI and ISO related to each other. Why TCP/IP protocol suite became the dominant commercial architecture. UNIT 1I Q.4. a) How does single-bit error differ from burst error?. b) What kind of error is undetectable by checksum. c) Explain Go-Back-N ARQ Protocol. ANN OR Q.5 a) Define framing and why do we need it. b) Explain CSMA with collision detection. c) Define Slotted ALOHA. waw UNIT III Q.6 a) Define IPv4 and IPv6. Compare and contrast the fields in headers of IPv4 and IPV6. Give the reason for elimination of checksum from IPV6 header. b) Define Tunneling. OR Q.7 a) Define ARP and RARP. b) Give some adaptive and non-adaptive routing algorithms. UNIT IV Q.8 a) Short note on (any 2) i, E-mail ii. www iti. Multimedia. 3 x2-6 b) Explain RSA algorithm. OR Q.9 a) Which is a connectionless, unreliable protocol? Give some of its uses. Give its header 5 format. b) Explain Digital signature technique. What all services are provided by Digital Signatur and which service is not present....
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