12) The following conditions are necessary for a deadlock
I) Mutual exclusion
II) Hold & wait
III) No preemption
IV) Circular waits
A) I, II, III only
B) II, III, IV only
C) I, II, IV only
D) All of the above

13) i=0; sum=0; j=0;
while (i<=50)
{
i = i + (j ? 2 : 3);
j = !j;
sum += i;
}
printf ("%d", sum);
What is the output?
A) 410
B) 630
C) 490
D) 530

14) If x then y else false
The above statement is equal to following Boolean expression
A) x OR y
B) x AND y
C) x XOR y
D) NOT x

15) Octal equivalent of hexadecimal number AB is:
A 523
B 253
C 171
D 1010 1011

16) Instruction sequencing is done by the following register:
A) Stack pointer
B) Instruction register
C) program counter
D) Accumulator

17) Find the odd one out
A) Semiconductor memory
B) magnetic memory
C) Charge coupled memory
D) Virtual memory

18) Which of the following is a valid flip-flop?
A) JK Flip-flop
B) S Flip-flop
C) R Flip-flop
D) None

19) Which of the following allows multiple program threads to share the same resource?
A) Mutex
B) Pipe
C) File Handle
D) Deadlock

20) Postfix representation of A / (B + C) * (D - E)

A) /A*+BC-DE
B) ABC+DE-*/
C) ABCDE-+*/
D) A+BC-DE*/

21) Range of signed integers represented by 8 bits:
A) 127 to 127
B) 128 to 127
C) 127 to 128
D) 128 to 128

22) 2's Complement of 1010001010110111
A) 0101110101001000
B) 0101110101001111
C) 0101110101000111
D) 0101110101000000

23) Which of the following is part of the CPU (Central Processing Unit)
A) Harddisk
B) Registers
C) RAM (Random Access Memory)
D) DMA (Dynamic Memory Access)

24) What is the 2 GB (Giga Bytes) equivalent value in decimal?
A) 2141592658
B) 2097152948
C) 2000000000
D) 2147483648

25) What is decimal and binary equivalent of an octal number 127?
A) 87 and 1010111
B) 78 and 1010110
C) 87 and 1010110
D) 78 and 1010111

26) What is the address space range of a microprocessor with 32-bit address bus?
A) 0x00000000-0xFFFFFFF

• 12)Ans-a
  14)Ans-b
  15)Ans-c
  16)Ans-c
  17)Ans-d
  19)Ans-d
  20)Ans-b
  21)Ans-b
  23)Ans-b
  25)Ans-a
• 9 years agoHelpfull: Yes(1) No(1)
• 12) D)
  15) B)
  18) A)
  21) B)
  24) D)
  25) A)
• 9 years agoHelpfull: Yes(1) No(0)