Basic Computer Engg. - May 2012

First Year Engineering (Set B) (Semester 1)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.

Answer any one question from Q1 & Q2

1 (a) Define following:
(i) Instruction Register
(ii) Program Counter(7 marks) 1 (b) Explain how CPU communicates with Input/Output device.(7 marks) 10 (a) What is function of following devices:
(i) Router
(ii) Modem(8 marks) 10 (b) Briefly describe the different threats to network security?(6 marks) 2 (a) What is function of following:
(i) Address Bus
(ii) Control Unit(7 marks) 2 (b) Differentiate between Main Memory and Cache memory with a diagram.(7 marks)

Answer any one question from Q3 & Q4

3 (a) Explain following types of operating functions
(i) Time sharing
(ii) Multiprogramming(7 marks) 3 (b) Explain various states of a process with diagram.(7 marks) 4 (a) How us CPU shceduling performed by operating system.(7 marks) 4 (b) Differentiate Top-down and Bottom-up program design methods.(7 marks)

Answer any one question from Q5 & Q6

5 (a) Explain how base class member functions can be invoked in a derived class if the derived class also has a member function with the same name.(7 marks) 5 (b) Write a C++ program to find seconds largest number in a given array of 100 integers.(7 marks) 6 (a) Write a C++ program to overload > operator to find heavier of two stones according to their weights.(7 marks) 6 (b) What is constructor? Can a class in C++ have more than one constructor with same name? Justify your answer.(7 marks)

Answer any one question from Q7 & Q8

7 (a) What is Data Independence? Differentiate between logical and physical data independence.(7 marks) 7 (b) What is function of following:
(i) DBA
(ii) Data dictionary(7 marks) 8 (a) Differentiate between following
(i) Domain and attribute
(ii) Data definition language and Data manipulation language.(7 marks) 8 (b) Describe network data model. What are records and sets in network data model.(7 marks)

Answer any one question from Q9 & Q10

9 (a) What is function of:
(i) Bridge
(ii) Network Interface Card(8 marks) 9 (b) Which OSI Layer performs following
(i) Breaking the bit stream into frames
(ii) Determine which route to use
(iii) Provide synchronization(6 marks)