UGC NET Computer Science and Applications, June 2009: Fully Solved

Leave a Comment
This is the Fully Solved Question paper of UGC NET examination on Computer Science and Applications Paper II, examination held on June 2009. We have a compilation of 10 years question paper of UGC NET Computer Science and Applications. You can browse through all solved UGC NET question papers visiting the links below.

<<Previous UGC NET Paper                                                            Next UGC NET Paper>>

1. If x and y are independent Gaussian random variables with average value 0 and with same variance, their joint probability density function is given by:
(A) p(x,y)=p(x).p(y) (B) p(x,y)=p(x)+p(y)
(C) p(x,y)=p(x+y) (D) p(x,y)=p(x).p(y)+p(x)
2. In order that a code is ‘t’ error correcting, the minimum Hamming distance should be:
(A) t (B) 2t-1
(C) 2t (D) 2t+1
Ans: D
3. The Boolean expression x’y’z+yz+xz is equivalent to:
(A) x (B) y
(C) z (D) x+y+z
Ans: C
4. The characteristic equation of a JK flip flop is:
(A) Qn+1=J.Qn+K.Qn (B) Qn+1=J.Q’n+K’.Qn
(C) Qn+1=QnJ.K (D) Qn+1=(J+K)Qn
Ans: B
5. In order to implement a n variable switching function, a MUX must have:
(A) 2n inputs (B) 2n+1 inputs
(C) 2n-1 inputs (D) 2n-1 inputs
Ans: A
6. The throughput of pure ALOHA is given by:
(A) S=G (B) S=e2G
(C) S=Ge2G (D) Ge-2G
Ans: D
7. The Fiber Distributed Data Interface uses:
(A) single mode fibers and LEDs
(B) multimode fibers and LEDs
(C) single mode fibers and ILDs
(D) multimode fibers and ILDs
Ans: B
8. To employ multi-access in GSM, users are given different:
(A) time slots (B) bandpass filters
(C) handsets (D) frequency bands
Ans: B
9. With a four programs in memory and with 80% average I/O wait, the CPU utilization is?
(A) 60% (B) 70%
(C) 90% (D) 100%
Ans: A
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 (B) P/2 bytes
(C) N/2 bytes (D) NP bytes
Ans: A
11. Assertion(A): Bit maps are not often used in memory management.
Reason(R): Searching a bitmap for a run of given length is a slow operation.
(A) Both (A) and (R) are true and (R) is correct explanation for (A)
(B) Both(A) and (R) are true but (R) is not correct explanation for (A)
(C) (A) is true (R) is false
(D) (A) is false (R) is true
Ans: A
12. The complete graph with four vertices has k edges where k is:
(A) 3 (B) 4
(C) 5 (D) 6
Ans: D
13. The octal equivalent of hexadecimal (A.B)16 is:
(A) 47.21 (B) 12.74
(C) 12.71 (D) 17.21
Ans: B
14. A reduced state table has 18 rows. The minimum number of flip flops needed to implement the sequential machine is:
(A) 18 (B) 9
(C) 5 (D) 4
Ans: C
15. What is the value of ‘b’ after the execution of the following code statements:
(A) 20 (B) 22
(C) 23 (D) None
Ans: D
16. Which of the following does not represent a valid storage class in ’c’?
(A) automatic (B) static
(C) union (D) extern
Ans: C
17. The friend functions are used in situations where:
(A) We want to have access to unrelated classes
(B) Dynamic binding is required
(C) Exchange of data between classes to take place
(D) None of the above
Ans: C
18. (i) DML includes a query language based on both relation algebra and tuple calculus
(ii) DML includes a query language based on tuple calculus
(iii) DML includes a query language based on relational algebra
(iv) DML includes a query language based on none of the relational algebra and tuple calculus
Which one is correct?
(A) (i) only (B) (ii) only
(C) (iii) only (D) (iv) only
Ans: A
19. Suppose it takes 100 ns to access a page table and 20 ns to access associative memory with a 90% hit rate, the average access time equals:
(A) 20 ns (B) 28 ns
(C) 90 ns (D) 100 ns
Ans: B
20. There exists a construct which returns a value ‘true’ if the argument subquery is:
(A) empty (B) non-empty
(C) in error (D) none of the above
Ans: B
21. Which construct in SQL is used to test whether a subquery has any tuples in its result?
Ans: B
22. ORACLE supports:
(A) inner join and outer join only
(B) outer join and semi join only
(C) inner join, outer join , semi join only
(D) inner join, outer join, semi join and anti join
23. Which two of the following are equivalent for an undirected graph G?
(i) G is a tree
(ii) There is at least one path between any two distinct vertices of G
(iii) G contains no cycles and has (n-1) edges
(iv) G has n edges
(A) (i) and (ii)
(B) (i) and (iii)
(C) (i) and (iv)
(D) (ii) and (iii)
Ans: B
24. In a B tree of order m with p nodes the average number of splits is at most:
Ans: B
25. The prepositional formula given by the tree:

(A) ˄˅x2˅x1¬x1¬x1
(B) (x2˅¬x2)˄(x1˅x2)
(C) (¬x1˅x2)˄(¬x1˅x2)
(D) None
Ans: C
26. Queue is a ----------- list.
Ans: D
27. In a full binary tree of height k, there are ----------- internal nodes.
(A) 2k-1 (B) 2k-1
(C) 2k (D) 2k+1
Ans: A
28. A binary tree is said to have heap property if the elements along any path:
(A) from leaf to root are non-increasing
(B) from leaf to root are non-decreasing
(C) from root to leaf are non-decreasing
(D) from root to leaf are non-increasing
Ans: D
29. X.25 protocol consists of:
(A) Physical and Frame levels
(B) Frame and Packet levels
(C) Physical, Frame and Packet levels
(D) None of the above
Ans: C
30. GSM/CDMA systems:
(A) are limited to very low speed data
(B) require no local loop wires
(C) are predominantly used for voice
(D) all of the above
Ans: D
31. Usually information security in a network is achieved by:
(A) Layering (B) Cryptography
(C) Grade of service (D) None of the above
Ans: B
32. The linker:
(A) is similar to interpreter
(B) uses source code as its input
(C) is required to create a load module
(D) none of the above
Ans: C
33. In which addressing mode the operand is given explicitly in the instruction itself?
(A) Absolute mode (B) Immediate mode
(C) Indirect mode (D) Index mode
Ans: B
34. A compiler that runs on one machine and produces code for a different machine is called:
(A) Cross compilation (B) One pass compilation
(C) Two pass compilation (D) None of the above
Ans: A
35. Any syntactic construct that can be described by a regular expression can also be described by a:
(A) Context sensitive grammar
(B) Non context free grammar
(C) Context free grammar
(D) None of the above
Ans: C
36. Find the odd man out:
(A) tail (B) cut
(C) wart (D) sed
Ans: C
37. Which of the following changes permission to deny write permission to group and others?
(A) Chmod go-w filex (B) Chmod go w filex
(C) Chmod go=w filex (D) None of the above
Ans: A
38. Variable partition memory management technique with compaction results in:
(A) Reduction of fragmentation
(B) Minimal wastage
(C) Segment sharing
(D) None of the above
Ans: A
39. Capability Maturity Model is meant for:
(A) Product (B) Process
(C) Product and Process (D) None of the above
Ans: B
40. In the light of software engineering software consists of:
(A) Programs (B) Data
(C) Documentation (D) All of the above
Ans: D
41. Which one of the following ISO standard is used for software process?
(A) ISO 9000 (B) ISO 9001
(C) ISO 9003 (D) ISO 9000-3
Ans: D
42. Which of the following is used for test data generation?
(A) White box (B) Black box
(C) Boundary-value analysis (D) All of the above
Ans: C
43. Reverse engineering is the process which deals with:
(A) Size measurement (B) Cost measurement
(C) Design recovery (D) All of the above
Ans: C
44. The spacing between character pairs is called:
(A) Kerning (B) x-height
(C) intercap (D) serif
Ans: A
45. When compared with analog cellular systems, an advantage of digital TDMA cellular system is that:
(A) it is less complicated
(B) it requires less of computer memory
(C) it conserves spectrum bandwidth
(D) it costs less
Ans: C
46. E-commerce includes:
(A) B2C (B) B2B
(C) C2C (D) All of the above
Ans: D
47. A clustering technique that permits a convenient graphical display is:
(A) partition based clustering
(B) probabilistic model based clustering
(C) hierarchical clustering
(D) agglomerative clustering
Ans: C
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:
(A) Authenticity (B) Non-Repudiability
(C) Auditability (D) Repudiability
Ans: B
49. The device which connects dissimilar LANs of different topologies using different sets of communication protocols so that information can flow from one to another is called:
(A) Router (B) Bridge
(C) Gateway (D) Switch
Ans: C
50. We cannot delete the ---------- icon but we can made it invisible.
(A) Recycle (B) My Computer
(C) Internet explorer (D) None of the above
Ans: A

<<Previous UGC NET Paper                                                            Next UGC NET Paper>>


Post a Comment