END TERM EXAMINATION
FIRST SEMESTER [BCA] DEC-2019
Paper Code: BCA-107
Subject: Introduction to Computers & IT
Time: 3 Hours
Maximum Marks: 75
Note: Q. No. 1 is compulsory. Attempt one question from each unit.
- Q1. Attempt the following:- (5x5=25)
- (a) Define Computers. Explain the various characteristics of Computer System.
- (b) What are Registers? Explain different types of CPU Registers.
- (c) Convert (295)10 to Binary and BCD.
- (d) Differentiate between multiprogramming and time-sharing operating system.
- (e) What is an instruction set? Explain various types of addressing modes.
UNIT I
- Q2. (a) What is generation in Computer terminology? List various computer generations along with the key characteristics of hardware and software technologies in each generation. (6.5)
- (b) What are Input and Output devices? Discuss any 3 of each in detail (6)
- Q3. (a) What do you mean by computer organization? Explain the basic organization of a computer system with the help of a block diagram. (5)
- (b) Differentiate the following: (7.5)
- i) Static and Dynamic RAM
- ii) Magnetic Disk and Magnetic Tape
- iii) PROM and EPROM
OR
UNIT II
- Q4. (a) Define Operating System. Discuss two primary objectives of an Operating System. Explain various functions provided by most of the operating system. (6.5)
- (b) Define Algorithm with characteristics. Write an algorithm using flowchart and Pseudocode to find the maximum of N numbers. (6)
OR
- Q5. Write short notes for the following: (12.5)
- i) Types of Operating System
- ii) Loader and Linker
- iii) Process Control Block (PCB)
- iv) Flowchart and Pseudocode
- v) Multiprocessor Operating System and its advantages
UNIT III
- Q6. (a) What is the significance of Base in number system? Distinguish among binary, octal and hexadecimal number system with examples. (4.5)
- (b) Perform the following operations. For subtraction use complement's method: (8)
- i) (1100011)2 - (10111)2
- ii) (11001)2 * (11110)2
- iii) (36)10 - (87)10
- iv) (110011)2 + (11111)2
- Q7. (a) Explain the following with example: (any 3) (4.5)
- i) ASCII Code
- ii) Unicode
- iii) BCD
- iv) Grade code
- (b) Convert the following: (8)
- i) (8B5A)16 = ( )10
- ii) (125.75)10 = ( )2
- iii) (1765)8 = ( )10
- iv) (10111.101)2 = ( )10
UNIT IV
- Q8. (a) Explain various types of computer network topologies along with their advantages and disadvantages. (6.5)
- (b) Write short notes on any 3 from the following. (6)
- i) FTP
- ii) WWW
- iii) Client Server Architecture
- iv) Digital and Analog Signals
- Q9. (a) What are the main components of a data communication system. Explain different types of transmission media used in data communications along with their advantages and disadvantages. (8.5)
- (b) Distinguish between Intranet and Extranet with example. (4)