1. Piggy
backing is a technique for
a) Flow
control b) Sequence c) Acknowledgement d) retransmition
Ans. (c)
2. In OSI,
terminal emulation is done in
(a) sessions
layer (b) application layer (c) presentation layer (d) transport layer
Ans: (b)
3.Bit parity
check,when performed on a byte ,can catch
a)odd number of errors
b)even number of errors
c)any number of errors
d)none of the above
Ans: (a)
4. In signed magnitude notation what is the
minimum value that can be represented with 8 bits
(a)
-128 (b) -255
(c)
-127 (d) 0
Ans: (c)
5. For 1 MB
memory, the number of address lines
required,
(a)11 (b)16
(c)20 (d) 24
Ans. (c)
6.For a 25MHz processor , what is the time taken by
the instruction which needs 3 clock cycles,
(a)120 nano
secs (b)120 micro secs (c)75 nano
secs (d)75 micro secs
Ans: (a)
7. Semaphore
is used for
(a)
synchronization (b) dead-lock avoidence
(c) both a and b (d) none
Ans. (a)
8. Which of
the following involves context switch,
(a) system
call (b) priviliged instruction (c)
floating poitnt exception (d) all the above (e) none of the above
Ans: (a)
9.Virtual address are translated to physical
address by
(a) the process
(b) operating system
(c) MMU
(d) All of the above
(e) None of the above
ans: ( c )
10.convert
the hexadecimal number 0xFEDB to the octal
(a) 177333
ans: (a)
11. OLE is a
mechanism
a)in UNIX
for network communication
b)in
INTERNET for communication between nodes
c)for
communication between processes in a NT system
d)used as a
network layer protocol in NT & Windows systems
ans : (d)
12. an
internet IP address of a node
a)has to be unique only for the domain of the
node
b)has to be unique in the node’s sub-network
c)has to be unique in the country in which the
node is present
d)none of the above
ans : ( b )
13. There is
an employee table with key feilds as employer no.data in every n'th row are
needed for a sample. Which of the
following queries will get
required results.
a) select A employe no. from employe A ,
where exists (select (max (emp_no)))from employe B
where A
employe no. >= B employe having (count(*) mod n)=0
b) select employe no. from employe A, employe
B where A.employe no.>=B employ no.group by employe no.having(count(*) mod
n)=0 )
c) both a& b
d)none of the above
ans: (d)
14. Type
duplicates of a row in a table customer with non unique key feild customer
no. can use
a) delete
from costomer where customer no. exists( select distinct customer no. from
customer having count )
b) delete
customer a where customer no. in (select
cust_no from customer b where a.cust_no=b.cust_no) and
a.rowid>b.rowid
c) delete
customer a where custermor no. in ( select customer no. from customer a,
customer b group by a.cust_no
having
(count(*)>1) and a.rowid>b.rowid);
d) none of
the above
ans : (d)
15.which of
the following is a feature of the ANSI C language and not present in Java?
a)forward referencing
b)variable length argument lists
c)volatile modifier
d)none of the above
ans: (b)
section 2 –
C Programming
1.which of
the following about the following two declarations is true
i) int *F();
ii)int (*F)();
a)Both are identical
b)the first is a correct declaration and
second is wrong
c) the first declaration is a function
returning a pointer to an integer and
the second is a pointer to a
function returning int
d)Both are different ways of declaring pointer
to a function
ans :
(c)
2.what are
the values printed by the following program?
#define
dprintf(expr) printf(#expr=%d\n”,expr)
main()
{
int x=7;
int y=3;
dprintf(x/y);
}
a)#2=2 b)expr=2 c)x/y=2 d)none
ans ( c)
3.which of
the following is true of the following program
main()
{
char *c;
int *ip;
c=(char
*)malloc(100);
ip=(int *)c;
free(ip);
}
a)the code
functions properly by releasing all the memory allocated
b)results in
compilation error as a pointer of various types cannot be equated
c)the
program ties to free more memory than allocated and results in run time error
d) works
well except when the machine runs low on
memory and malloc is unabel to allocate the memory
ans : (d)
4.output
main()
{
int I;
char *p;
i=0x89;
p=(char
*)i;p++;
printf(“%x\n”p);
}
a)0x8c b)0x4566788A
c)0x8A d)0x8B e)none
ans : I
don’t know . it may be ( c )
5.which of
the following is not an ANSI c language
keyword?
a)volatile
b)function c)default d)const
e)void
ans; (b)
6.when an
array is passed as parameter to a function ,which of the following statement is
correct
a)the
function can change values in the original array
b)in c
parameters are passed by value . the function cannot change the original value
in the array
c)it results
in compilation error.Array cannot be passed as a parameter to a function
d)results in
runtime error when the function tries to access the elements in the array
7.the type
of the controlling expression of a switch statement cannot be of the type
a)int
b)char c)short d)float
e)none
ans (d)
8.value of
(3^6)+(a ^a)=?
Ans :value=5
9. x=
b>8?b<<3:b>4?b>>1:b;
ans: x=3
10.output:
main()
{
int n=2;
printf(“%d
%d\n”++n,n*n);
}
a)3,6 b)3,4
c)2,4 d)cannot determine
ans :( b)
11.output:
int x=0x65;
main()
{
char x;
printf(“%d\n”,x);
]
a)compilation
error b)’A’ c)65
d)undefined
12.output
main()
{
int a=10;
int b=6;
if(a=3)
b++;
printf(“%d
%d”,a,b++);
}
a)10,6 b)10,7
c)3,6 d)3,7 e)none
13.main()
{
enum months
{jan=1,feb,mar,apr};
months
x=jan;
if(x==1)
printf(“jan
is the first month”);
}
a)does not
print anything
b)prints :
jan is the first month
c)generates
compilation error
d)results in
runtime error
ans : ( c )
14.what is
the output of the following program?
Main()
{
char
*src=”hello world”;
char
dst{100];
strcpy(src,dst);
printf(“%s”,dst);
}
strcpy(char
*dst,char *src)
{
while (*src)
*dst++=*src++;
}
a)”hello
world” b)”hello” c)”world”
d)NULL e)undefined
ans: ( e )
15.main()
{
int i=6;
switch(i)
{
default:
i+=2;
case 4;i=4;
case 5:i++;
break;
}
printf(“%d”,i);
}
a)8 b)6
c)5 d)4 e)none
16.main()
{
int x=20;
itn y=10;
swap(x,y);
printf(“%d
%d”,y,x+2);
}
swap(int
x,int y)
{
int temp;
temp=x;
x=y;
y=temp;
}
a)10,20 b)20,12
c)22,10 d)10,22 e)none
17.#define
INC(x) x++
main()
{
int x=4;
printf(“%d”,INC(x++));
}
a)4 b)5
c)6 d)compilation error e)runtime error
ans : (d)
18.struct
node{
char *word;
int count;
struct node left;
struct node right;
};
a)incorrect
definiton
b)structures cannot refer to other structrues
c)structures can refer
to themselves.Hence the statement is ok
d)structures
can refer to maximum of one other structure
19.what is
the size of the following union
union tag{
int a;
float b;
char c;
};
a)2 b)4
c)1 d)7
ans :( b)
20. main()
{
char
s[]=”hello world”;
printf(“%15.10s”,s);
}
a)hello,.world…
b)…..hello
world
c)heloo,.wor…..
d)none of
the above
ans: (b)
section C –
analysing program segements
1)struct
dlink{
int nodeid;
struct dlink *next;
struct dline *prev;
} dlink_t;
A pointer to
the head of tha linked list is maintained as a global variable whose definition
is
dlink_t
*head;
The function
remove_element(dlink_t*rp), needs to remove the node pointed to by rp and
adjust the head
The first
node’s prev and the last node’s text are NULL
remove_element
(dlink_t *rp)
{
rp->prev->next
=rp->next;
rp->next->prev
=rp->prev;
if(head
==rp)
head =rp->next;
}
which of the
following statement is true about the function remove_element
a)it works
when head is the same as rp;
b)it does
not work whe rp is the last element on the list
c)it sets
the head of the list correctly
d)it works
in all cases
ans:( b)
2.#define
NULL 0
char *
index (sp,c)
register char *sp,c;
{
do {
if(*sp==c)
return(sp);
}while (*sp++);
return (NULL);
}
The first
argument sp,is a pointer to a C string. The second argument c is a character.
This function searches for the character c in the string . If it is found
a pointer to
that location is returned ,else NULL is returned
This
function works
a)Always
b)always but
fails when the first byte contains the character c
c)works when
c is a non NULL character array
d)works only
when the character c is found in the string
ans : I
don’t know.i answered randomly at last.
3.main()
{
printf(“%d\n”,f(7));
}
f(x)
{
if(x<=4)
return x;
return f(--x);
}
a)4
b)5
c)6
d)7
ans : ( 4 )
4.on a
machine where pointers are 4 bytes long,what happens when the following code is
executed
main()
{
int x=0
,*p=0;
x++;p++;
printf(“%d and %d\n”,p);
}
a) 1 and 1
is printed
b) 1 and 4
c) 4 and 4
d) causes an
exception
ans : this
question was not asked.instead a different
question is asked.
5.which is
correct?
a)strcpy(char
*dst,char *src)
{
while (*src)
*dst++=*src++;
}
b)
strcpy(char *dst,char *src)
{
while
(*dst++=*src++);
}
c)
strcpy(char *dst,char *src)
{
while
(*src){
*dst=*src;
dst++;src++;
}
}
d)
strcpy(char *dst,char *src)
{
while
(*++dst=*++src);
}
ans : I
don’t know the answer. I answered randomly at last.
6. main()
{
int
i=20,*j=&i;
f1(j);
*j+=10;
f2(j);
printf(“%d
and %d ‘,i,*j);
}
f1(k)
int *k;
{ *k+=15;}
f2(x)
int *x;
{ int m=*x,
*n=&m;
*n+=10;
}
The values
printed by the program will be
a)20 and 55
b)20 and 45
c)45 and 45
d)55 and 55
e)35 and 35
ans : ( c )
7.int
func(int x)
{
if(x<=0)
return (1);
return func(x-1)+x;
}
main()
{
printf(“%d”,func(5));
}
a)12 b)16
c)15 d)11
8.consider
the following fragments of c code in two files which will be linked together
and executed
a.c
int i;
main()
{
i=30;
f1();
printf(“%d”,i);
}
b.c
static int
f1()
{
i+=10;
}
which of the
following is true?
a)a.c will
fail in compilation phase because f1() is not declared
b)b.c will
fail in compilation because the variable i is not declared
c)will print
30
d)will print
40
d)a & b
9. void
funca(int
*k)
{
*k+=20;
}
void
funcb(int
*k)
{
int
m=*x,*n=&m;
*n+=10;
}
main()
{
int var=25,;
*varp=&var;
funca(varp)
*varp+=10;
funcb(varp);
printf("%d%d,var,*varp);
}
(a) 20,55(b)
35,35(c) 25,25(d)55,55
ans : (d )
9. #include
<stream.h>
class x{
public :
int a;
x();
};
x::x() { a=10;cout<< a ;}
class b:public x {
public :
b(); x();
};
b::b() { a=20;cout<<a;}
main()
{
b temp;
}
what will be the output of the following
program?
a)10
b)20 c)20 10
d)10 20
ans : this
question is not asked.
section 4 – General
Aptitude Section
1. In a murder case there are four suspects
P,Q,R,S. Each of them makes a statement . They are
P : I had
gone to the theatre with S at the time of the murder
Q: I was
playing cards with P at the time of the murder
R: Q did not
commit the murder
S: R is not
the murdere
Assuming
that only one of the above statement is false and that one of them is the
murderer,who is the murderer?
a)p b)Q
c)R d)cannot be concluded e)S
2.Mohan
earned twice as much and deep.Yogesh earned Rs.3/- more than half as much as
deep.If the amounts earned by mohan,deep and yogesh are M,D and y respectively
which of the following is the correct ordering of these amounts?
a)M<D<Y
B)M<Y<D
C)D<M<Y
D)it cannot
be determined from the information given
e)D<Y<M
ans : ( d )
3.Statistics
indicate that men drivers are involved in more accidents than women
drivers.Hence it may be concluded that
a)sufficient
information is not there to conclude anything
b)men are
actually better drivers but drive more frequently
c)woment
certainly drive more cautiously than men
d)men
chauvinists are wrong about women’s abilities
e)statistics
sometimes present a wrong picture of things
ans : ( a )
4.convert hex number 0xE78 to radix 7
ans : 13541
5.given that
A,B,C,D,E represent one of the digits between 1 and 9 and that the following
multiplication holds
ABCDE
X4=EDCBA
Which digit
does E represent?
a)4 b)6
c)8 d)7 e)insufficient data provided
6.HCL
photocopying machine can make 10 copies every 4 seconds.
At this rate,how may copies can the machine make
in 6 minutes?
a)900
b)600
c)360
d)240
e)150
ans : ( a)
7. if a=2 ,
b=4 ,c=5 then
(a+b)/c –
c/(a+b)=?
Ans : 11/30
8.10^2 (10
^8 +10 ^8)/ 10^4=?
Ans :
2(10^6)
9.worker W
produces n units in 5 hours.Workers V and W,working independently but at the
same time produce n units in 2 hours. How long would it take V alone to produce
n units?
Ans : 3 hr
20 min
10 . If q#0
and k=(rq/2) – s ,then what is r in terms of k,q ans s?
ans :
2(k+s)/q
Note :
question nos 11 to 20 were not asked in order.They shuffled the order.so don’t
study as e,a,b,c,b . study the answer.
1.A causes B
or C ,but not both
2.F occurs
only if B occurs
3. D occurs
if B or C occurs
4.E occurs
only if C occurs
5.J occurs
only if E or F occurs
6.D causes
G,H or both
7.H occurs
if E occurs
8.G occurs
if F occurs
11) if A
occurs which of the following may occur?
I . F and G
II. E and H
III.D
a)I only
b)II only
c)III only
d) I & II
& III
e)I & II
or II & III but not both
ans : ( e )
12. If B occurs which must occur?
a)D
b)D and G
c)G and
H
d)F and G
e)J
ans : ( a )
13. if J
occurs ,which must have
occurred?
a)E
b) Either B or C
c)both E & f
d)B
e) Both B & C
ans : ( b )
14. which
may occur as a result of a cause not mentioned?
I.D
II.A
III.F
a) I only
b) II only
c) I &
II
d) II &
III
e) I , II
& III
Ans : ( c )
15. If E
occurs which one cannot occur?
a)A
b)F
c)D
d)C
e)J
ans ; ( b )
Qestions
16-20
Six knights
– P,Q,R,S,T and U – assemble for a long journey in two travelling parties. For
security, each travelling party consists of at least two knights .The two parties travel by
separate routs,northern and southern .After one month ,the routes of the
northern and southern groups converge for a brief time and at that point the
knights can if they wish ,rearrange their travelling parties before continuing,
again in two parties along separate northern and southern routes. Throughout
the entire trip , the composition of travelling parties must be in accord with
the following conditions:
P and R are deadly enemies and although they
may meet briefly can never
travel together.
P must travel in the same party with S
Q cannot travel by the southern route
U cannot change routes
16. If one
of the two parties of knights consists of P and U and two other knights and
travels by the southern route, the other memebers of this party besides P and U
must be
a)Q and S
b)Q and T
c)R and S
d)R and T
e)S and T
17.if each
of the two parties of knights consists of exactly three members,which of the
following is not a possible travelling pary and route?
a)P,S,U by
the northern route
b)P,S,T by
the northern route
c)P,S,T by
the southern route
d)P,S,U by
the southern route
e)Q,R,T by
the northern route
18.if one of
the two parties of knights consisits of U and two other knights and travels by
the northern route,the other members of this party besides U must be
a)P and S
b)P and T
c)Q and R
d)Q and T
e)R and T
19.if each
of the two parties of knights consists of exactly three members ,S and U are
members of different parties and R travels by the northern route then T must
travel by the
a)southern
route with P and S
b)southern
route with Q and R
c)southern
route with R and U
d)northern
route with Q and R
e)northern
route with R and U
20. if when
the two parties of knights encounter one another after a month exactly one
knight changes from one travelling party to the other travelling party ,that
knight must be
a)P
b)Q
c)R
d)S
e)T
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