Computer Science Model Question Grade 12

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Time: 1.30 hrs.                                                               Full Marks: 30

Group ‘A‘

(Long  answer questions)

Attempt any two questions.                                                        2×7.5=15

1. a)  Explain if-else control structure with example.                         3.5

b)   Define the terms inheritance and polymorphism.                    2+2

2. What is function ? Write the advantages of function. Differentiate between library and user-defined function with example.                                      1+2.5+4

3. What is normalization write its advantages. Explain second and third normal form with example…………………………………………………………………….. 1.5+2+4

 

Group ‘B’ (Short answer questions)

Attempt any three questions.                                                        3×5=15

4. Explain system analysis phase of SDLC.                                          5

5. What is database model ? Explain relational model.                       2+3

6. Differentiate between bounded and unbounded transmission media.    5

7. Write short note on:                                                                 2.5+2.5

AI           b) Router