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January 27th, 2017, 05:04 PM
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Join Date: Mar 2012
Re: PGCET Computer Science Question Papers

the sample paper for the GCET examination for the Computer Science Engineering discipline required for practice purpose is as follows:

Computer Science Engineering Sample Papers

1 The order of an internal node in a B+ tree index is the maximum number of
children it can have. Suppose that a child
pointer takes 6 bytes, the search field
value takes 14 bytes, and the block size
is 512 bytes. What is the order of the
internal node?
A) 24
B) 25
C) 26
D) 27
Answer : (C)
2 The Boolean function x, y, + xy + x, y
A) x, + y,
B) x + y
C) x + y,
D) x, + y
Answer : (D)
3 In an MxN matrix such that all non-zero entries are covered in a rows and b
columns. Then the maximum number of non-zero entries, such that no two are on
the same row or column, is
A) £ a + b
B) £ max {a, b}
C) £ min {M-a, N-b}
D) £ min {a, b}
Answer : (A)
4 The relation scheme Student Performance
(name, courseNo, rollNo, grade) has the
following functional dependencies:
A) name, courseNo -> grade
B) rollNo, courseNo -> grade
C) name -> rollNo
D) rollNo -> name
The highest normal form of this relation scheme is
Answer : (A)
5 The minimum number of page frames that
must be allocated to a running process
in a virtual memory envi
ronment is determined by
A) the instruction set architecture
B) page size
C) physical memory size
D) number of processes in memory
Answer : (D)
6 Let G be a simple graph with 20 vertices
and 100 edges. The size of the minimum
vertex cover of G is 8. Then, the size
of the maximum independent set of G is
A) 12
Exam Guess Papers
B) 8
C) Less than 8
D) More than 12
Answer : (A)
7 What does the following algorithm
approximate? (Assume m > 1, Î > 0).
x = m;
y-i;
while (x - y > Î)
{ x = (x + y) / 2 ;
y = m/x ;
}
print (x) ;
A) log m
B) m
2
C) m
1/2
D) m
1/3
Answer : (C)
8 Consider the following C program
main ()
{ int x, y, m, n ;
scanf ("%d %d", &x, &y);
/ * Assume x > 0 and y > 0 * /
m = x; n = y ;
while ( m ! = n)
{ if (m > n)
m = m — n;
else
n = n - m ; }
printf("%d",n); }
The program computes
A) x + y, using repeated subtraction
B) x mod y using repeated subtraction
C) the greatest common divisor of x and y
D) the least common multiple of x and y
Answer : (C)
9 The best data structure to check whether an arithmetic expression has balanced
parentheses is a
A) queue
B) stack
C) tree
D) list
Answer : (B)
Exam Guess Papers
10 A Priority-Queue is implemented as a M
ax-Heap. Initially, it has 5 elements. The
level-order traversal of the heap is gi
ven below: 10, 8,5,3,2 Two new elements 1 and
7 are inserted in the heap in that order.
The level-order traversal
of the heap after
the insertion of the elements is
A) 10,8,7,5,3,2,1
B) 10,8,7,2,3,1,5
C) 10,8,7,1,2,3,5
D) 10,8,7,3,2,1,5
Answer : (D)
11 An organization has a class B network and wishes to form subnets for 64
departments. The subnet mask would be
A) 255.255.0.0
B) 255.255.64.0
C) 255.255.128.0
D) 255.255.252.0
Answer : (D)
12 Suppose the round trip propagation delay for a 10 Mbps Ethernet having 48-bit
jamming signal is 46.4 ms. Th
e minimum frame size is:
A) 94
B) 416
C) 464
D) 512
Answer : (C)
13 The following numbers are in
serted into an empty binary search tree in the given
order: 10, 1, 3, 5, 15, 12, 16. What is the height
of the binary sea
rch tree (the height
is the maximum distance of a leaf node from the root)?
A) 2
B) 3
C) 4
D) 6
Answer : (B)
14 Consider the following C function:
int f (int n)
{ static int i = 1;
if (n >= 5) return n;
n = n + i;
i ++;
return f (n);
}
The value returned by f(1) is
A) 5
Exam Guess Papers
B) 6
C) 7
D) 8
Answer : (C)
15 The minimum number of page frames th
at must be allocated to a running
process in a virtual memory environment is determined by
A) the instruction set architecture
B) page size
C) physical memory size
D) number of processes in memory
Answer : (D)


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