June 2009

June 2009

	1	2	3	4	5	6	7	8	9	10
1 to 10		D	C	B	C	D	B	B	A	A
11 to20	A	D	B	C	D	C	C	A	B	B
21 to30	B		B	B	C	D	A	D	C
31 to40	B	C	B	A	C	C	A	A	B	D
41 to50	B	C	C	A	C	D	C	B	C	A

Explanation:

2. In order that a code is 't' error correcting, the minimum hamming distance should be :
    (D) 2t+1

4. Characteristic equation of JK Flip-flop is :
    (B) Q(n+1)=JQ'+K'Q

5. In order to implement a n variable switching function, a MUX must have :
    (A) 2 power n

6. The throughput of pure ALOHA is given by :
    (D) Ge power -2g

7. The fiber distributed Data interface uses:
    (B) Multimode fibres and LED's

8. To employ multi-access in GSM, users are given different :
    (D) frequency bands

9. With a four programs in memory, and with 80% average I/O wait, the CPU utilization is :
     (A) 60%
     CPU utilization is given by 1-p to power n. Here n=4 and p=80%=0.8.

10. Assume N segments in memory and a page size of P bytes. The wastage on account of internal          fragmentation is :
      (A) NP/2 bytes

12. The complete graph with four vertices  has k edges , where k is :
     (D) 6
       k=n(n-1)/2

13. The octal equivalent of hexadecimal (A.B) is:
      (B)12.54
       In hexa decimal A=10 and B=11, now A.B means1010.1011 =>
       001 010.101 100 = > 1 2. 5 4 = > 12.54

15. What is the value of 'b' after execution of following code statements:
       c = 10;
       b = ++c + ++c;
       (D) None  (bcoz, if a variable comes twice or more in one statement the answer is compiler dependent)

16 Which of the following does not represent a valid storage class in 'C'?
      (C) Union

18. DML includes a query language based on both relational algebra and tuple calculus. True

19. Suppose it takes 100ns to access a page table, and 20 ns to access associative memory, with a 90% hit rate, the average access time equals
     (B) 28 ns
     access time = associative memory * hit ratio + time for main memory (1-hit ratio)

20. There exist a construct which returns a value 'true'if the argument subquery is :
     (B) Non - Empty

21. Which construct in SQL is used to test whether a subquery has tuples in its result?
     (A) Unique

23. Which two of the following are equivalent for undirected graph G?
     (D)

24. In a B tree of order m with p nodes the average number of splits is atmost :
      (B) m/2 - 1

26. Queue is a ------- list.
      (A) LIFO

28. A binary tree is said to have heap property if the elements along any path :
      (D) from root to leaf are non increasing

31. Usually information in a network is achieved by :
     (B) Cryptography

33. In which addressing mode the operand is given explicitly in the instruction itself :
    (B) Immediate mode

34. A compiler that runs on one machine and produces code for a different machine is called:
    (A) Cross compilation

37. Which of the following changes permissions to deny write permission to group and others?
     (A) chmod go -w filex

39. Capability maturity model is meant for :
    (B) Process

40. In the light of software engineering software consists of :
    (D) All (Programs , data and documentation)

41. Which one of the following ISO Stamdard is used for software process?
    (C) ISO 9003

42. Which of the following is used for test data generation?
   (C) Boundary value Analysis

43.Reverse Engineering is the process which deals with :
   (C) Design Recovery

44. The spacing between character pairs is called :
  (A) Kerning

46. E-commerce includes :
  (D) All (b2b, b2c, c2c)

47. A clustering technique that permits a convenient graphical display is :
   (C) Hierarchical Clustering

48. After sending a message,the sender should not be able to , at a later date , deny having sent the message is referred to as:
   (B) Non-Repudiability

50.We cannot delete the ------ icon but make it invisible :
  (A) Recycle

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