University of Mumbai 2009-1st Sem B.Sc Information Technology (IT) Introduction Information - Question Paper

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TT-990

( 3 Hours ) [Total Marks: 100

N.B. : (1) Question No. 1 is compulsory.

(2) Attempt any four questions from remaining question Nos. 2 to 7.

1. (a) Explain different modes of data transmission. 10 (b) Do the following conversion 10

(i) Convert (2AB)₁₆ to Binary

(ii) Convert (101110)2 to Octal

(iii) Convert (12-20)₁₀ to Binary

(iv) Convert (337)₁₀ to Hexa-decimal

(v) Convert (1010110-101 )₂ to Decimal.

2. (a) Explain concept of Virtual Memory and Cache Memory. 6

(b) Write difference between Analog and Digital Signal. 4

(c) Explain Shannons Theorem and channel capacity for sending data. 10

3. (a) Explain data transmission speed in detail. 10 (b) What do you understand by modulation and demodulation. 10

4. (a) Define Topology. Explain different types of topology. 10 (b) Explain different Switching techniques and explain its advantages 10

and disadvantages.

5. (a) Explain OSI model in detail. 10 (b) Explain OCR, OMR and Joystick in detail. 10

6. (a) Explain the following transmission media 10

(i) Co-axial Cable

(ii) Fiber Optical Cable

(iii) Twisted Pair Cable.

(b) What is Protocol ? Explain transmission control protocol. 10

7. (a) Write a note on (any two) 10

(i) WAN

(ii) HTTP

(iii) Magnetic Tape.

(b) Explain Secondary Memory in detail. 10

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