Character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, ambition inspired, and success achieved.
1. Which of the following does not define a tree?
(A) A tree is a connected acyclic graph.
(B) A tree is a connected graph with n-1 edges where ’n’ is the number of vertices in the graph.
(C) A tree is an acyclic graph with n-1 edges where ’n’ is the number of vertices in the graph
(D) A tree is a graph with no cycles.
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Correct Answer is D
2. The complexity of Kruskal’s minimum spanning tree algorithm on a graph with ‘n’ nodes and ‘e’ edges is :
(A) O(n)
(B) O(n log n)
(C) O(e log n)
(D) O(e)
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Correct Answer is C
3. If a code is t-error correcting, the minimum Hamming distance is equal to:
(A) 2t+1
(B) 2t
(C) 2t-1
(D) t-1
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Correct Answer is A
4. The set of positive integers under the operation of ordinary multiplication is:
(A) not a monoid
(B) not a group
(C) a group
(D) an Abelian group
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Correct Answer is D
5. In a set of 8 positive integers, there always exists a pair of numbers having the same remainder when divided by:
(A) 7
(B) 11
(C) 13
(D) 15
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Correct Answer is A
6. An example of a tautology is:
(A) x ∨ y
(B) x ∨ (~y)
(C) x ∨ (~x)
(D) (x→y)∨(x↔y)
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Correct Answer is C
7. Among the logic families RTL, TTL, ECL and CMOS, the fastest family is:
(A) ECL
(B) CMOS
(C) TTL
(D) RTL
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Correct Answer is A
8. The octal equivalent of the hexadecimal number FF is:
(A) 100
(B) 150
(C) 377
(D) 737
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Correct Answer is C
9. The characteristic equation of a T flip flop is given by
(A) QN+1=TQN
(B) QN+1=T+QN
(C) QN+1=T ⊕ QN
(D) QN+1=T’+QN
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Correct Answer is C
10. The idempotent law in Boolean algebra says that:
(A) ∼(∼x)=x
(B) x+x=x
(C) x+xy=x
(D) x(x+y)=x
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Correct Answer is B
11. What is the effect of the following C code?
for(int i=1; i=5; i=i+½)
printf(“%d,”,i);
(A) It prints 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, and stops
(B) It prints 1, 2, 3, 4, 5, and stops
(C) It prints 1, 2, 3, 4, 5, and repeats forever
(D) It prints 1, 1, 1, 1, 1, and repeats forever
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Correct Answer is D
12. Consider the following declaration in C:
char a[];
char *p;
Which of the following statement is not a valid statement?
(A) p=a;
(B) p=a+2;
(C) a=p;
(D) p=&a[2];
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Correct Answer is C
13. Consider the following C code:
{ int a=5, b=9;
float r;
r=b/a; }
What is the value of r ?
(A) 1.8
(B) 1.0
(C) 2.0
(D) 0.0
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Correct Answer is B
14. Function overloading is a concept in which:
(A) a function is used to implement lots of tasks at the same time.
(B) a function is called too many number of times by another function.
(C) a function provides common interface to the user to carry out possibly different functions in each call.
(D) a function is computationally too expensive for the system to handle.
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Correct Answer is C
15. Which of the following is true?
(A) A “static” member of a class cannot be inherited by its derived class.
(B) A “static” member of a class can be initialized only within the class it is a member of.
(C) A “static” member of a class can be initialized before an object of that class is created.
(D) Since “static” member of a class is actually a global element, it does not require a class/object qualifier to access it independently of class/object.
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Correct Answer is C
16. A superkey for an entity consists of:
(A) one attribute only
(B) at least two attributes
(C) at most two attributes
(D) one or more attributes
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Correct Answer is D
17. Which of the following set of keywords constitutes a mapping in SQL?
(A) SELECT, FROM, TABLE
(B) SELECT, FROM, WHERE
(C) CONNECT, TABLE, CREATE
(D) SELECT, TABLE, INSERT
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Correct Answer is B
18. If a relation is in 2NF then:
(A) every candidate key is a primary key
(B) every non-prime attribute is fully functionally dependent on each relation key
(C) every attribute is functionally independent
(D) every relational key is a primary key
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Correct Answer is B
19. Which of the following is true?
(A) A relation in 3NF is always in BCNF
(B) A relation in BCNF is always in 3NF
(C) BCNF and 3NF are totally different
(D) A relation in BCNF is in 2NF but not in 3NF
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Correct Answer is B
20. Consider the query :
SELECT student_name
FROM student_data
WHERE rollno (SELECT rollno
FROM student_marks
WHERE SEM1_MARK=SEM2_MARK);
Which of the following is true ?
(A) It gives the name of the student whose marks in semester 1 and semester 2 are same.
(B) It gives all the names and roll nos of those students whose marks in semester 1 and semester 2 are same
(C) It gives the names of all the students whose marks in semester 1 and semester 2 are same.
(D) It gives roll numbers of all students whose marks in semester 1 and semester 2 are same.
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Correct Answer is C
21. Which of the following data structures is most efficient in terms of both space and time to reverse a string of characters?
(A) Linked list
(B) Stack
(C) Array
(D) Tree
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Correct Answer is B
22. Which of the following can be the sequence of nodes examined in a binary search tree while searching for key 98?
(A) 100, 50, 75, 60, 98
(B) 100, 120, 90, 95, 98
(C) 200, 70, 100, 95, 98
(D) 75, 150, 90, 80, 98
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Correct Answer is C
23. Which of the following is true for a sorted list with ‘n’ elements?
(A) Insertion in a sorted array takes constant time.
(B) Insertion in a sorted linear linked list takes constant time.
(C) Searching for a key in a sorted array can be done in O(log n) time.
(D) Searching for a key in a sorted linear linked list can be done in O(log n) time.
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Correct Answer is C
24. Files that are related to input/output and are used to model serial I/O devices such as terminals, printers and networks are called :
(A) regular files
(B) character special files
(C) directories
(D) block special files
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Correct Answer is D
25. An example of a possible file attribute is:
(A) minimum size
(B) permanent flag
(C) archive flag
(D) EBCDIC flag
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Correct Answer is C
26. The ATM cells are ................ bytes long.
(A) 48
(B) 53
(C) 64
(D) 69
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Correct Answer is B
27. For slotted ALOHA, the maximum channel utilization is :
(A) 100%
(B) 50%
(C) 36%
(D) 18%
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Correct Answer is C
28. For a channel of 3 KHz bandwidth and signal to noise ratio of 30 dB, the maximum data rate is:
(A) 3000 bps
(B) 6000 bps
(C) 15000 bps
(D) 30000 bps
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Correct Answer is D
29. An example of a public key encryption algorithm is:
(A) Caesar cipher algorithm
(B) DES algorithm
(C) AES algorithm
(D) Knapsack algorithm
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Correct Answer is D
30. With reference to hierarchical routing, the optimum number of levels for an m router subnet is:
(A) m2
(B) m
(C) ln m
(D) √m
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Correct Answer is C
31. Assembler program is:
(A) dependent on the operating system
(B) dependent on the compiler
(C) dependent on the hardware
(D) independent of the hardware
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Correct Answer is C
32. In the indirect addressing scheme, the second part of an instruction contains:
(A) the operand in decimal form
(B) the address of the location where the value of the operand is stored
(C) the address of the location where the address of the operand is stored
(D) the operand in an encoded form
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Correct Answer is C
33. At the end of parsing,
(A) tokens are identified.
(B) set of instructions are identified.
(C) the syntactic groups are identified.
(D) machine instructions are identified.
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Correct Answer is A
34. Dead-code elimination in machine code optimization refers to:
(A) removal of all labels.
(B) removal of values that never get used.
(C) removal of function which are not involved.
(D) machine instructions are identified.
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Correct Answer is B
35. A parse tree is an annotated parse tree if:
(A) it shows attribute values at each node.
(B) there are no inherited attributes.
(C) it has synthesized nodes as terminal nodes.
(D) every non-terminal nodes is an inherited attribute.
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Correct Answer is A
36. An example of a non-preemptive CPU scheduling algorithm is:
(A) Shortest job first scheduling.
(B) Round robin scheduling
(C) Priority scheduling.
(D) Fair share scheduling.
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Correct Answer is A
37. There are ‘n’ processes in memory. A process spends a fraction ‘p’ of its time waiting for I/O to complete. The CPU utilization is given by:
(A) pn
(B) 1-pn
(C) (1-p)n
(D) 1-np
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Correct Answer is B
38. An example of a memory management system call in UNIX is:
(A) fork.
(B) mmap.
(C) sigaction.
(D) execve.
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Correct Answer is B
39. With 64 bit virtual addresses, a 4KB page and 256 MB of RAM, an inverted page table requires
(A) 8192 entries.
(B) 16384 entries.
(C) 32768 entries.
(D) 65536 entries.
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Correct Answer is D
40. A computer has 6 tape drives with ‘n’ processes competing for them. Each process may need two drives. For which values of ‘n’ is the system deadlock free ?
(A) 1
(B) 2
(C) 3
(D) 6
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Correct Answer is c
41. Water fall model for software development is:
(A) a top down approach.
(B) a bottom up approach.
(C) a sequential approach
(D) a consequential approach.
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Correct Answer is C
42. In software development, value adjustment factors include the following among others:
(A) the criticality of the performance and reusability of the code.
(B) number of lines of code in the software.
(C) number of technical manpower and hardware costs.
(D) time period available and the level of user friendliness.
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Correct Answer is A
43. While designing the user interface, one should:
(A) use as many short cuts as possible.
(B) use as many defaults as possible.
(C) use as many visual layouts as possible.
(D) reduce the demand on short-term memory.
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Correct Answer is D
44. In software cost estimation, base estimation is related to:
(A) cost of similar projects already completed.
(B) cost of the base model of the present project.
(C) cost of the project with the base minimum profit.
(D) cost of the project under ideal situations.
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Correct Answer is A
45. In clean room software engineering
(A) only eco-friendly hardware is used.
(B) only hired facilities are used for development.
(C) correctness of the code is verified before testing.
(D) implementation is done only after ensuring correctness.
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Correct Answer is D
46. Amdahl’s law states that the maximum speedup S achievable by a parallel computer with ‘p’ processors is given by
(A) S≤f+(1-f)/p
(B) S≤f/p+(1-f)
(C) S≤1/[f+(1-f)/p]
(D) S≤1/[1-f+f/p]
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Correct Answer is D
47. With reference to cluster analysis in data mining, a distance measure that is NOT used is:
(A) Euclidean distance.
(B) Manhattan distance.
(C) Chebychev’s distance.
(D) Lee distance.
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Correct Answer is D
48. In a mobile communication system, a geographic region is divided into cells. For each frequency set, there is a buffer ............... wide where that frequency is not used.
(A) one-cell
(B) two-cells
(C) three-cells
(D) four-cells
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Correct Answer is B
49. Identify the incorrect statement:
(A) The overall strategy drives the e-commerce data warehousing strategy.
(B) Data warehousing in an e-commerce environment should be done in a classical manner.
(C) E-commerce opens up an entirely new world of web servers.
(D) E-commerce security threats can be grouped into three major categories.
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Correct Answer is D
50. Identify the incorrect statement:
(A) The ATM adaptation layer is not service dependent.
(B) Logical connections in ATM are referred to as virtual channel connections.
(C) ATM is a streamlined protocol with minimal error and flow control capabilities.
(D) ATM is also known as cell relay.
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Correct Answer is A
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