HCL
SECTION#1
1).The binary equivalent of the Hexadecimal
number 7BD is
A. 11110111101
B. 111010111101
C. 101110111101
D. All of the above
E. None of the above
Answer: A
2. Which of the following is non-impact
printer?
A. Drum printer
B. Line printer
C. Chain printer
D. Laser printer
E. None of the above
Answer: D
3. In which year was the PC voted 'The
Machine of the Year's by the American Time magazine?
A. 1970
B. 1975
C. 1983
D. 1987
E. None of the above
Answer: C
4. When used with I/O devices, the term
intelligent implies
A. a color output capability
B. speech processing capability
C. high speed printing capability
D. feature to support offline and online tasks
E. None of the above
Answer: D
5. A prefix for billion which is equal to
_____ is called as billi.
A. 100
B. 10000
C. 1000
D. 10
E. None of the above
Answer: D
6. The operation of a digital computer is based
on _____ principle.
A. counting
B. measuring
C. electronic
D. logical
E. None of the above
Answer: A
7. Which of the following Indian companies
designs and manufactures super- computers?
A. C-DOT
B. C-DAC
C. CMC
D. All of the above
E. None of the above
Answer: B
8. Which of the following memories needs
refresh?
A. SRAM
B. DRAM
C. ROM
D. All of the above
E. None of the above
Answer: B
9. Which of the following is not a
sequence storage device?
A. Magnetic disk
B. Magnetic tape
C. Paper tape
D. All of the above
E. None of the above
Answer: A
10. The computers that we use are digital
whereas we live in an analog world which means that we have to translate analog
data into digital data. What is the name of the circuit which helps us in this
conversion?
A. D/A converter
B. A/D converter
C. Voice recognition
D. Adapter
E. None of the above
Answer: B
11). Which of the following statements best
describes the batch method of input?
A. Data is processed as soon as it is input
B. Data is input at the time it is collected
C. Data is collected in the form of source
documents, placed into groups, and then input to the computer
D. Source documents aren't used
E. None of the above
Answer: C
12. What is the name of the memory card
which is conceptually related to the smart card but is similar to the video
disk?
A. Laser card
B. Master card
C. Visa
D. Optical card
E. None of the above
Answer: A
13. In 1830, Charles Babbage disigned a
machine called the Analytical Engine which he showed at the Paris Exhibition.
In which year was it exhibited?
A. 1820
B. 1860
C. . 1855
D. 1870
E. None of the above
Answer: C
14. Which of the following is used to
check for errors in RAM chips?
A. ROM chip
B. Microprocessor chip
C. Parity chip
D. EPROM chip
E. None of the above
Answer: C
15. Which of the following is not an
alternative name for primary memory?
A. Main memory
B. Primary storage
C. Internal storage
D. Mass storage
E. None of the above
Answer: D
SECTION#2
1. Identify which of the following are
declarations
1 : extern int x;
2 : float square ( float x ) { ... }
3 : double pow(double, double);
A.1
B. 2
C. 1 and 3
D. 3
Ans : C
2. Which of the following statement obtains the
remainder on dividing 5.5 by 1.3 ?
A. rem = (5.5 % 1.3)
B. rem = modf(5.5, 1.3)
C. rem = fmod(5.5,
1.3)
D. Error: we can't divide
Ans: C
3. What will be the output of the program?
#include<stdio.h>
int main()
{
char c=48;
int i, mask=01;
for(i=1; i<=5; i++)
{
printf("%c", c|mask);
mask
= mask<<1;
}
return 0;
}
A.
12400
B. 12480
C.
12500
D. 12556
Ans: B
4. Point out the error in the following program.
#include<stdio.h>
#include<stdlib.h>
int main()
{
int *a[3];
a = (int*)
malloc(sizeof(int)*3);
free(a);
return 0;
}
A. Error: unable to allocate memory
B. Error: We cannot store address of allocated
memory in a
C. Error: unable to free memory
D. No error
Ans: B
5. What is the purpose of fflush() function.
A. flushes all streams and specified streams.
B. flushes only specified stream.
C. flushes input/output buffer.
D. flushes file buffer.
Ans; A
6. Point out the error, if any in the program.
#include<stdio.h>
int main()
{
int a = 10;
switch(a)
{
}
printf("This is c
program.");
return 0;
}
A. Error: No case statement specified
B. Error: No default specified
C. No Error
D. Error: infinite loop occurs
Ans: C
7. What will be the output of the program?
#include<stdio.h>
int addmult(int ii, int jj)
{
int kk, ll;
kk = ii + jj;
ll = ii * jj;
return (kk, ll);
}
int main()
{
int i=3, j=4, k, l;
k = addmult(i, j);
l = addmult(i, j);
printf("%d, %d\n",
k, l);
return 0;
}
A. 12,
12
B. 7, 7
C. 7,
12
D. 12, 7
Ans: A
8. In C, if you pass an array as an argument to
a function, what actually gets passed?
A. Value of elements in array
B. First element of the array
C. Base address of the array
D. Address of the last element of array
Ans: C
9. Out of fgets() and gets() which function is
safe to use?
A.
gets()
B. fgets()
Ans: B
10. In the following code what is 'P'?
typedef char *charp;
const charp P;
A. P is a
constant
B. P is a character constant
C. P is character type
D. None of above
Ans: A
11. What is x in the following program?
#include<stdio.h>
int main()
{
typedef char
(*(*arrfptr[3])())[10];
arrfptr x;
return 0;
}
A. x is a pointer
B. x is an array of three pointer
C. x is an array of three function pointers
D. Error in x declaration
Ans : C
12. Which of the following is the correct usage
of conditional operators used in C?
A. a>b ? c=30 : c=40;
B. a>b ? c=30;
C. max = a>b ?
a>c?a:c:b>c?b:c
D. return (a>b)?(a:b)
Ans : C
13. What will the SWAP macro in the following
program be expanded to on preprocessing? will the code compile?
#include<stdio.h>
#define SWAP(a, b, c)(c t; t=a, a=b, b=t)
int main()
{
int x=10, y=20;
SWAP(x, y, int);
printf("%d %d\n",
x, y);
return 0;
}
A. It compiles
B. Compiles with an warning
C. Not compile
D. Compiles and print nothing
Ans: C
14. The maximum combined length of the
command-line arguments including the spaces between adjacent arguments is
A. 128 characters
B. 256 characters
C. 67 characters
D. It may vary from one operating system to
another
Ans: D
15. Point out the error in the program (in
Turbo-C).
#include<stdio.h>
#define MAX 128
int main()
{
const int max=128;
char array[max];
char string[MAX];
array[0] = string[0] = 'A';
printf("%c %c\n",
array[0], string[0]);
return 0;
}
A. Error: unknown max in declaration/Constant
expression required
B. Error: invalid array string
C. None of above
D. No error. It prints A A
Ans: A
SECTION#2
1. A pointer is
A. A keyword used to create variables
B. A variable that stores address of an
instruction
C. A variable that stores address of other
variable
D. All of the above
Ans: C
2. What will be the output of the program
assuming that the array begins at the location 1002 and size of an integer is 4
bytes?
#include<stdio.h>
int main()
{
int a[3][4] = { 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11, 12 };
printf("%u, %u,
%u\n", a[0]+1, *(a[0]+1), *(*(a+0)+1));
return 0;
}
A. 448, 4, 4
B. 520, 2, 2
C. 1006, 2, 2
D. Error
Ans; C
3. Point out the compile time error in the
program given below.
#include<stdio.h>
int main()
{
int *x;
*x=100;
return 0;
}
A. Error: invalid assignment for x
B. Error: suspicious pointer conversion
C. No error
D. None of above
Ans: C
4. Which of the statements is correct about the
program?
#include<stdio.h>
int main()
{
int arr[3][3] = {1, 2, 3, 4};
printf("%d\n",
*(*(*(arr))));
return 0;
}
A. Output: Garbage
value
B. Output: 1
C. Output: 3
D. Error: Invalid indirection
Ans : D
5. What is the similarity between a structure,
union and enumeration?
A. All of them let you define new values
B. All of them let you define new data types
C. All of them let you define new pointers
D. All of them let you define new structures
Ans: B
6. What will be the output of the program ?
#include<stdio.h>
int main()
{
enum days {MON=-1, TUE,
WED=6, THU, FRI, SAT};
printf("%d, %d, %d, %d,
%d, %d\n", ++MON, TUE, WED, THU, FRI, SAT);
return 0;
}
A. -1, 0, 1, 2, 3,
4
B. Error
C. 0, 1, 6, 3, 4,
5
D. 0, 0, 6, 7, 8, 9
Ans: B
7. Point out the error in the program?
#include<stdio.h>
int main()
{
struct bits
{
int
i:40;
}bit;
printf("%d\n",
sizeof(bit));
return 0;
}
A.4
B. 2
C. Error: Bit field too large
D. Error: Invalid member access in structure
Ans: C
8. Which of the following statements correct
about the below program?
#include<stdio.h>
int main()
{
union a
{
int
i;
char
ch[2];
};
union a u1 = {512};
union a u2 = {0, 2};
return 0;
}
1: u2 CANNOT be initialized as shown.
2: u1 can be initialized as shown.
3: To initialize char ch[] of u2 '.' operator
should be used.
4: The code causes an error 'Declaration syntax
error'
A. 1, 2
B. 2, 3
C. 1, 2,
3
D. 1, 3, 4
Ans : C
9. What will be the output of the program?
public class X
{
public static void
main(String [] args)
{
try
{
badMethod();
System.out.print("A");
}
catch
(Exception ex)
{
System.out.print("B");
}
finally
{
System.out.print("C");
}
System.out.print("D");
}
public static void
badMethod() {}
}
A. AC
B. BC
C.
ACD
D. ABCD
Ans : C
10 . switch(x)
{
default:
System.out.println("Hello");
}
Which two are acceptable types for x?
1. byte
2. long
3. char
4. float
5. Short
6. Long
A. 1 and 3
B. 2 and 4
C. 3 and 5
D. 4 and 6
Ans : A
SECTION#4
1. Find (7x + 4y ) / (x-2y) if x/2y = 3/2 ?
(a) 6
(b) 8
(c) 7
(d) data insufficient
Ans: C
2. A man buys 12 lts of liquid which contains
20% of the liquid and the rest is water. He then mixes it with 10 lts of
another mixture with 30% of liquid. What is the % of water in the new mixture?
3. Two trains move in the same direction at 50
kmph and 32 kmph respectively. A man in the slower train observes the 15
seconds elapse before the faster train completely passes by him. What is the
length of faster train ?
(a) 100m
(b) 75m
(c) 120m
(d) 50m
Ans: B
4. Pipe A can fill a tank in 30 mins and Pipe B
can fill it in 28 mins.If 3/4th of the tank is filled by Pipe B alone and both
are opened, how much time is required by both the pipes to fill the tank
completely ?
5. If on an item a company gives 25% discount,
they earn 25% profit. If they now give 10% discount then what is the profit
percentage.
(a) 40%
(b) 55%
(c) 35%
(d) 30%
Ans: D
6. A certain number of men can finish a piece of
work in 10 days. If however there were 10 men less it will take 10 days more
for the work to be finished. How many men were there originally?
(a) 110 men
(b) 130 men
(c) 100 men
(d) none of these
Ans: A
7. In simple interest what sum amounts of
Rs.1120/- in 4 years and Rs.1200/- in 5 years ?
(a) Rs. 500
(b) Rs. 600
(c) Rs. 800
(d) Rs. 900
Ans: C
8. If a sum of money compound annually amounts
of thrice itself in 3 years. In how many years will it become 9 times itself.
(a) 6
(b) 8
(c) 10
(d) 12
Ans: A
9. How many mashes are there in 1 squrare meter
of wire gauge if each mesh is 8mm long and 5mm wide ?
(a) 2500
(b) 25000
(c) 250
(d) 250000
Ans B
10. x% of y is y% of ?
(a) x/y
(b) 2y
(c) x
(d) can,t be determined
Ans: C
11. The price of sugar increases by 20%, by what
% should a housewife reduce the consumption of sugar so that expenditure on
sugar can be same as before ?
(a) 15%
(b) 16.66%
(c) 12%
(d) 9%
Ans B
12. A man spends half of his salary on household
expenses, 1/4th for rent, 1/5th for travel expenses, the man deposits the rest
in a bank. If his monthly deposits in the bank amount 50, what is his monthly
salary ?
(a) Rs.500
(b) Rs.1500
(c) Rs.1000
(d) Rs. 900
Ans :C
13. The population of a city increases @ 4% p.a.
There is an additional annual increase of 4% of the population due to the
influx of job seekers, find the % increase in population after 2 years ?
14. The ratio of the number of boys and girls in
a school is 3:2 Out of these 10% the boys and 25% of girls
are scholarship holders. % of students who are not scholarship holders.?
15. 15 men take 21 days of 8 hrs. each to do a
piece of work. How many days of 6 hrs. each would it take for 21 women if 3
women do as much work as 2 men?
(a) 30
(b) 20
(c) 19
(d) 29
Ans: A
16. A cylinder is 6 cms in diameter and 6 cms in
height. If spheres of the same size are made from the material obtained, what
is the diameter of each sphere?
(a) 5 cms
(b) 2 cms
(c) 3 cms
(d) 4 cms
Ans :C
17. A rectangular plank (2)1/2 meters wide can
be placed so that it is on either side of the diagonal of a square shown
below.(Figure is not available)What is the area of the plank?
Ans :7*(2)1/2
18. The difference b/w the compound interest
payble half yearly and the simple interest on a certain sum lent out at 10% p.a
for 1 year is Rs 25. What is the sum?
(a) Rs. 15000
(b) Rs. 12000
(c) Rs. 10000
(d) none of these
Ans C
19. What is the smallest number by which 2880
must be divided in order to make it into a perfect square ?
(a) 3
(b) 4
(c) 5
(d) 6
Ans: C
20. A father is 30 years older than his son
however he will be only thrice as old as the son after 5 years what is father,s
present age ?
(a) 40 yrs
(b) 30 yrs
(c) 50 yrs
(d) none of these
Ans: A
