QUESTION PAPER 3

NOTE: Attempt any SEVEN questions. All questions carry equal marks    7×10=70

Use of Non-programmable scientific calculator is allowed.

 

• a) Convert the following decimal numbers to their binary equivalents: (5)
  49. 49.13
  50. 21.32

• 255

1. b) Subtract using 2’s complement (5)

1. (11001101)₂ – (10101010)₂
2. (100100)₂ – (11101)₂

 

• Carry out the following conversions (10)
  • (254)₁₀ = (?)₈
  • ( CA8)₁₆ = (?)₁₀
  • (19.98)₁₀ = (?)₁₆
  • (1BE9)₁₆ = (?)2
  • (332)₈ = (?)₁₀

 

• a) Explain EBCBIC code and Excess 3 code (5)

1. b) Explain the types of secondary memory with examples (5)

 

• a) What is Virtual memory? How and when it is used? (5)

1. b) Explain the units of memory measurement (5)

 

• a) Differentiate compiler and interpreter (5)

1. b) Discuss various facilities available on Internet (5)

 

• a) Explain Satellite based communication and it uses            (10)

 

• What is Ecommerce? What are its advantages and disadvantages?(10)

 

• Write short notes on

1. Internet bandwidth(5)
2. b) Smart cards(5)

9)    Write Short Notes on

1. a) Anti-Virus Programme(5)

E-Wallet(5)