Wipro Infotech Placement paper
Company: Wipro Infotech
THE QUESTIONS VERY WELL MOST OF the ANS ARE CORRECT. BUT YOU CAN VERIFY THEM IF TIME ALLOWS
1). Piggy backing is a technique for
a) Flow control
b) sequence
c) Acknowledgment
d) Retransmission
ans: c Ack
2). The layer in the OST model handles terminal emulation
a) session
b) application
c) presentation
d) transport
ans: b application
3) Ans: a odd numbers of errors
4)Q. 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 a)
5) c 20(no of address lines in 1MB of memory)
6) a 120(25 hz processor,what is the time taken by the instr which needs 3 clock cycles)
7) b synchronise the access(semaphores used for)
8 ) a system call(context switching is used in)
9) b the operating system(mapping of virtual to physical address)
10) a 177333(conversion of HEX “0xFEDB”in octal)
11) d used as a network layer protocol in network and windows(OLE) system
12) b has to be unique in the sub network(internet address)
13)Q. there is an employer table with key fields as employer no. data in every n’th row are needed for a simple following queries will get required results.
a) select A employe no. from employe A , where exists 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. grouply employe no. having (count(*) mod n=0 )
c) both a& b
d)none of the above
14)Q. type duplicates of a row in a table customer with non uniform key field customer no. you can see
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 customer b where custermer no. equal to b custemor no. ) and a rowid > b rowid
c) delete customer a where custermor no. in ( select customer no. from customer a, customer b )
d) none of the above
15) which feature in ANSI C but not in JAVA.??ANS variable arguments.
16)preprocessor does not do one of the following??ANS type checking.
17) long int size
a) 4 bytes
b) 2 bytes
c) compiler dependent
d) 8 bytes
ans: compiler dependent
18) x=2,y=6,z=6
x=y==z;
printf(%d”,x) ?
ANS 1
19) class c : public A,publicB
a)2 members in class a,b can have member functions with same name.
b)2 members in class a,c can have member functions with same name.
c)both
d)none
(ANS)
Contents
#######WHAT WILL BE THE I/O OF THE FOLLOWING ############
20) main()
{
char *p;
p=malloc(10);
free(p);
printf(”%d”,p);
}
ANS compilation error
21)
a=(10,15)
b=10,15
what are the values of a & b in ANSI C
ANS 15,10
22)main(){
int x=10,y=15,z=16;
x=y==z;
printf(”%d”,x);
ANS 0
23)f(n) f(x)
{
if(x
<=0) return; else f(x-1)+x; } find the value of fn(5)?
ANS 15.
24)struct { int det; struct prevoius; struct new; } delete(struct node) { node-prev-next=node-next; node-next-prev=node-prev; if(node==head)node } one element will be given.
ANS::it does not work when rp is the last element in the link list.
25)A code will be given which searches a particular char in the string.
ANS:: it always works.
26)main() { int var =25,varp; varp=&var; varp p=10; fnc(varp); printf(”%d%d”,var,varp); } ANS::55,55 (check this out)
27)#define VALUE 1+2 main() { printf(”%d and %dn”,VALUE/VALUE,VALUE*3); }
ANS:: 5,7
28)What is the value assigned to the variable a if b is 7 a=b>8?b<<2:b>4?b>>1:b;
ANS::3
29)the value of the following expr (2^3)+(a^a) is
a) 1
b)2
c) 3
d) insufficient data
30) which of the following is not basic data type
ANS char*
31)the declaration of the variable does not result in one of the following
ANS allocatrion of the storage space for the varable.
32)in C parameters are passed by
ANS:: value only.
33)2 variables cannot have the same name if they are
ANS:: in the same block.
34)a static funct. say s(),in as file f.c can be invoked from
ANS all functs. in f.c after the definitions of s.
35)macros and functions do not differ in the following aspects
ANS::variable no of arguments.
36)one q’s in which he will give some different forms of STRCPY function you will have to find out which form is correct.
Wipro Infotech Placement paper
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