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HCL Aptitude paper
Posted Date: 19 Feb 2008 Resource Type: Articles/Knowledge Sharing Category: Study Abroad
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Posted By: Ramkumar Member Level: Diamond
Rating:  Points: 3
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1) Piggy backing is a technique for
a) Flow control b) sequence c) Acknowledgement d) retransmission
Ans: c
2) The layer in the OST model handles terminal emulation
a) Session b) application c) presentation d) transport
ans: b
3) In signed magnitude notation what is the minimum value that can be represented with 8 bits
a) -128 b) -255 c) -127 d) 0
4) There is an employer table with key fields as employer no. data in every nth row are needed for simple following queries will get required results.
Select A employee no. from employee A , where exists from employee B where A employee no. >= B employee having (count(*) mod n)=0
Select employee no. from employee A, employee B where A employee no. >= B employ no. group employee no. having (count(*) mod n=0 )
both a& b
none of the above
5) Type duplicates of a row in a table customer with non uniform key field customer no. you can see
delete from customer where customer no. exists ( select distinct customer no. from customer having count )
delete customer a where customer no. in(select customer b where customer no. equal to b customer no. ) and a rowid >b rowid
delete customer a where customer no. in (select customer no. from customer a, customer b )
none of the above
6) long int size
a) 4 bytes b) 2 bytes c) compiler dependent d) 8 bytes
Ans: compiler dependent
7) x=2,y=6,z=6
x=y==z;
printf(%d",x) ?
8) If(x>2)?3:4
9) 10 in 4 seconds,
? in 6 minutes = 10x6x60/4 = 900 ans: (a)
10) a=2, b=4, c=5
(a+b)/c - c/(a+b) = 11/30 (ans).
11) 100(100000000+100000000)/10000 = 2x1000000 (ans).
12) What does the hexa-number E78 in radix 7?
(a) 12455 (b) 14153 (c) 14256 (d) 13541 (e) 131112 ans: (d)
13) Q is not equal to zero and k = (Q x n - s)/2. Find n?
(a) (2 x k + s)/Q (b) (2 x s x k)/Q (c) (2 x k - s)/Q
(d) (2 x k + s x Q)/Q (e) (k + s)/Q
If A occurs which of the following must occurs
data:
A causes B or C, but not both
F occurs only if B occurs
D occurs if B or C occurs
E occurs only if C occurs
J occurs only if E or F occurs
D causes G,H or both
H occurs if E occurs
G occurs if F occurs
I. F & 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)}
14) If B occurs which must occur
(a) D (b) D and G (c) G and H
(d) F and G (e) J {ans: (a)}
15) 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)}
16) Which may occurs as a result of cause not mentioned
(1) D (2) A (3) F
(a) 1 only (b) 2 only (c) 1 & 2 (d) 2 & 3 (e) 1,2,3 {ans: (c)}
17) E occurs which one cannot occurs
(a) A (b) F (c) D (d) C (e) J {ans: (b)}
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