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Question
Verifone PLACEMENT PAPERS ------ Verifone Placement Paper  4
 Question Submitted By :: Guest
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  Re: Verifone PLACEMENT PAPERS ------ Verifone Placement Paper 4
Answer
# 1
Verifone Placement Papers | Verifone Interview Procedure | 
Verifone Aptitude Questions | Verifone Technical Questions 
| Verifone Interview Questions


------------------------------------------------------------
------
				VERIFONE
------------------------------------------------------------
-----

there will be 45 qstns. 15+5+5+5+5+5+5.
section: electronics:
1.a logic ckt is given and asked to identify the 
configuration.
ans: XOR.
2.multi vibrator with nor gates is given 
ans: astable multi sqr wave opt.
3.4 stage ripple counter with delay(f/f) 10msec. How much 
time it takes 
for a state to change. 4*10=40.
4.impedence of a p'lel resonant circiut at resonance:R.
5.serial to parellel conversion is done by ans:shift 
register.
5.if the address bus id 20bits.then the memory space is 1Mb.
6.filtering can be done with:capacitor,iductor,both,none.
7.the config that is worst effected by low CMMR
ans:Non inverting amplifier.
8.two progs are given. one satrts counting frm 0 to MAX and 
the other 
stars frm MAX to 0. which one executes fast.may be Max to 
0.Think of.it 
should be.

another 6 qstns are there. simple.


Verifone Placement Papers | Verifone Interview Procedure | 
Verifone Aptitude Questions | Verifone Technical Questions 
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Networks:
1.
the fctn of datalink layer is:bit stuffing.
2.which of the following is not fctn of datalink layer: 
Encription.
3.voltage levels of rs232x:+12,-12.
4.which of the following is not used for client/server.
RPC,TCP/IP,MESSAGEQs None ans:may be none.
5.



Verifone Placement Papers | Verifone Interview Procedure | 
Verifone Aptitude Questions | Verifone Technical Questions 
| Verifone Interview Questions



database:
1. which of the following is true.
ans:the primary key in DataBAse design is very important.
2. SQL is a Non procedural query langauge.
3.
4
5.
compiler/algo/ds:
1.Data structure used to impliment a menu: doubly linked 
circular linked 
list.
2. some regular expression is given:WaW'.may be it is 
context free grammar.
3.,4,5.
os:
1.the feature of real time os is: fast context swithing.
2.os impliments protection with the help of hardware(like 
virtual 
addressing in 386/286 etc).


Verifone Placement Papers | Verifone Interview Procedure | 
Verifone Aptitude Questions | Verifone Technical Questions 
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C:
some small c progs are given asked to tell the 
function/errors etc.
one of the qstn(last in the paper) is an invalid statement.
finish of all these very fast and think about those others. 
they are 
simple only.








Verifone Placement Papers | Verifone Interview Procedure | 
Verifone Aptitude Questions | Verifone Technical Questions 
| Verifone Interview Questions




 
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