Placement Papers - HCL

Section I:  computer awareness(i.e general things about computer)
Q.15  -ve marks -1/4  Section II: Simple C- language Q. 15   & -ve marks: -1/4  Section III: On pointers & structures and C++,JAVA( only 1 on this) 
Q.10  each quetion ->2 marks
-ve marks: -1  Section IV:  Analytical    Q.20   each quetion -> 2 marks.
-ve marks: -1/4 SECTION-I
1). Piggy backing is a technique for
a) Flow control b) sequence c) Acknowledgement  d) retransmition
ans:  c  piggy backing 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 5) c      20 6) a      120 7) b      synchronise the access 8) a      system call 9) b      the operating system 10) a      177333 11) d      used as a network layer protocall in network and
        windows system 12) b      has to be unique in the sub network 13)Q. there is an employer table with key feilds 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 feild 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 b rowid
c) delete customer a where custermor no. in (select customer no. from customer a, customer b )
d) none of the above 15) c Volatile modifier SECTION-II