Tuesday, 30 December 2014

Computer Knowledge 8

1. An RDBMS is a:                                                                      BSNL TTA EXAM Question 
(a) Remote DBMS
(b) Relative DBMS
(c) Reliable DBMS
(d) Relational DBMS
Answer: d

2. A UPS:
(a) increases the storage capacity of a computer system
(b) increases the processor speed
(c) provides backup power in the event of a power cut\
(d) none of the above
Answer: c

3. Cache memory enhances:
(a) memory capacity
(b) memory access time
(c) secondary storage capacity
(d) secondary storage access time
Answer: b

4. The minimum number of bits required to store the hexadecimal number FF is:
(a) 2
(b) 4
(c) 8
(d) 16
Answer: d

5. Which part of the computer perform arithmetic calculations?
(a) Control unit
(b) Registers
(c) ALU
(d) CPU
Answer: c

6. Which bus carries information between processors and peripherals?
(a) Data bus
(b) Control bus
(c) Address bus
(d) Information bus
Answer: a

7. CARRY, in a half-adder, can be obtained using:
(a) OR gate
(b) AND gate
(c) EX-OR gate
(d) EX-AND gate
Answer: b

8. The overall logical structure of a database can be expressed graphically by:
(a) Data Flow Diagram
(b) Flow Chart
(c) Directed Graph
(d) Entity-Relationship Diagram
Answer: d

9. Out of the following which is not valid network topology:
(a) Bus
(b) Star
(c) Circle
(d) Tree
Answer: c

10. If c is a variable initialized to 1, how many times the following loop be executed:
while(c>0 && c<60)
(a) 59
(b) 60
(c) 61
(d) none of the above
Ansewr: a

11. What is the final value of sum?
main ()
int sum=1;
printf(%d\n, ++sum);
(a) 9
(b) 10
(c) 11
(d) none of the above
Answer: b

12. RAM stands for
(a) Read Access Memory
(b) Read After Memory
(c) Random Access Memory
(d) Random After Memory
Answer: c

13. Maximum size of IP address is:
(a) 12 bits
(b) 24 bits
(c) 32 bits
(d) 48 bits
Answer: c

14. Assembly language to machine language translation is:
(a) One-to-One
(b) One-to-Many
(c) Many-to-One
(d) Many-to-Many
Answer: b

15. What is the binary equivalent of a decimal number 68:
(a) 1000100
(b) 1100100
(c) 1000010
(d) 1000001
Answer: a

16. A floppy disk is consisting of 40 tracks, each track contains 100 sectors, and the capacity of a
sector is 512 bytes, what is the approx. size of that disk?
(a) 1 MB
(b) 2 MB
(c) 4 MB
(d) 8 MB
Answer: b

17. BIOS stands for
(a) Binary Input Output Set
(b) Binary Input Output System
(c) Basic Input Output Set
(d) Basic Input Output System

Answer: d

18. The minimum number of bits required to store the hexadecimal number FF is:
(a) 2
(b) 4
(c) 8
(d) 16

Answer: c

19. A gigabyte represents:
(a) 1 billion bytes
(b) 1000 kilobytes
(c) 230 bytes
(d) 10 megabytes

Answer: a

20. The memory that requires refreshing of data is:
(a) SROM
(b) DROM
(c) SRAM
(d) DRAM

Answer: d

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