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VERIFONE



Verifone test Questions :

There are two parts :
Note: The Answers given here are what i wrote, May not be 
correct.

1. Aptitute test 	:  15 Minutes, 20 Questions

	Towards the middle questions are easy than from the 
front.

	eg.  Product of three consecutive nos. 210.  What 
is the sum
	   	of two least numbers?
		ans.: 5 * 6 * 7 = 210 , sum = 11 is answer

	eg.  If the area of the sqaure is increased by 69 % 
how
		much the length of the side will increase?

		  ans.: 13 (i think)
	eg.  if the sum of five consecutive nos. 35? how 
many prime nos
		are there :
		 
		ans: 5 + 6 + 7 + 8 + 9 = 35  so two primes

	eg.  if the length of the rectangle is reduced by 
20% and breath
		is increased by 20 % what is the net 
change ?
		ans.: 4 % decrease

2. 

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i. Electrical & Electronics  	: 15 Questions
	and,nand...circuit realted stuff,  ..........

ii.Data Structures, Algo., & Complexity theory : 5 questions

a. if W is a sequence of strings without a and W' is its 
reversal
	then WaW' is generated by:

		ans. i think Context Free Grammmars

b. Whether all recusive pgm can be writtten iteratively?

c. What data structes you will use if you want to go to 
first record from
the last and vice versa?  
	ans.: doubly linked circular list

d. Given 10000 nos. and 48MB Memory.  What is the 
complexity of the 
efficient sorting algo.? (the algo. is not mentioned)

e.  Given a  C code and ask what it does?
	I think the code was something similar to Bubble 
sort and that
particular code does the sorting in Desending order and the 
complexity
is O(n^2)(which is the next question).

iii. OS : 5 questions

a. If there are too many page faults what is the problem?

b. To ensure one pgm. doesnt corrupt other pgm. in a Multi-
pgm. enviornment
	what you should do?

c. Which one you will use  to implement critical section?
	Binary Semaphore

d. Which one is not needed for Multi-pgm. enviornment?
	options are: virtual memory,security,time 
sharing,none of the
     			above.	
	

iv. Networks and Hardware:  5 questions

a. Which one is not done by Data link layer ?
	bit stuffing, LRC,CRC,parity check 
	
b. Which one is not related to Data link layer?

c. Which one is not suitable for client-server application?
	tcp/ip,message passing,rpc,none of the above.

d.



v. Databases and Misc.: 5 questions

a. What SQL .................. (not the expansion)

b. Indexing in databases give you ............

c.  

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vi. C Pgm. : 5 questions

1. int a=1,b=2,c=3;
   printf("%d,%d",a,b,c);
	What is the output?

2. for(i=0; i<=10;i++,printf("%d",i); +-   (+- is there in 
the questions)

3. Scope of Static Variable ............

4. Given a C code and what is the output?