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Verifone PLACEMENT PAPERS ------ Verifone Placement Paper 3
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VERIFONE
Verifone test Questions :
There are two parts :
1. Aptitute test : 15 Minutes, 20 Questions
Some questions are:
(not in order)
1. A question (first one)on addition of fraction of
inches
a. was the answer
2. There were 36 chairs. how many ways can they be
placed such
that all rows have equal no. of chairs and atleast three
chairs
are there in each row and there are atleast three rows.
5 ways.
3. There are 27 balls, of which 1 is heavier. given a
balance
how many times you need to weigh to find out the odd
ball.
3 Weighs.
4. Product of three consecutive nos. 210. What is the
sum
of two least numbers
11.
5. If the area of the sqaure is increased by 69 % how
much the length of the side will increase?
30%
6. if the sum of five consecutive nos. 35? how many
prime nos
are there :
2 primes.
7. if the length of the rectangle is reduced by 20% and
breath
is increased by 20 % what is the net
change ?
4 % decrease
8. A question on sets.
There are some 20 Basketball players & 30 Football
players,
and 25 cricket players. 1 of them plays all the
three games.
8 of them plays atleast two games. They are 50
altogether.
How many of them plays none of the games.
9. A question on directions.
B is 20 miles east of A. D is 30 miles east of C.
E is 10 miles
north of D. C is 20 miles north of B. How far E is
from A?
Some 3 questions on Reasoning like,
10. If you say that giving stock options to employees
increases the
productivity of the company, which of the following
sentences
support it.
A) Giving stock options increases the morale of
the employees
..
..
etc.,
11. Gamblers comes to the Amusement parks. There are
some Amusement
parks in each city. There are some gamblers in each
city. So
what can you infer.
A) Amusement park always have gamblers.
..
..
etc.,
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2. Technical Questions.
i. Electrical & Electronics : 15 Questions
1.A Circuit with nand gates. (ans. may be XOR)
2.CMRR. relates to (options not in order)
voltage follower
non invering amplifier
inverting amplifier
integrator
3. Given a circuit , give the ouput.
(ans. may be triangular wave.)
4. o/p of an assembly code.
mulitply by 11.
5. how to handle asynchronous events.
a) polling
b) interrrupt
etc.
ii)Data Structures, Algo., & Complexity theory : 5 questions
iii) OS : 5 questions
iv) Networks and Hardware: 5 questions
v) Databases and Misc.: 5 questions
vi) C Pgm. : 5 questions
some more 10 questions.
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5. Given a C code and ask what it does?
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).
6.
A code like this is given.
a. for(i=0;i<num;i++)
b. for(i=num;i>0;i--)
Assuming no code optimization and assume that the
microprocessor
has flags etc. which one is correct.
b will execute faster.
7. If there are too many page faults what is the problem?
8. To ensure one pgm. doesnt corrupt other pgm. in a Multi-
pgm enviornment
what you should do?
9. Which one you will use to implement critical section?
Binary Semaphore
10. Which one is not needed for Multi-processing.
enviornment?
options are: virtual memory,security,time
sharing,none of the
above.
11. Which one is not done by Data link layer ?
bit stuffing, LRC,CRC,parity check
12. Which one is not related to Data link layer?
13. Which one is not suitable for client-server application?
tcp/ip,message passing,rpc,none of the above.
14. What is SQL.
Procedural Relational DB Query Language.
15. Indexing in databases give you
options were like 1.efficient deleting and inserting
2.efficient deleting.
etc.
16. int a=1,b=2,c=3;
printf("%d,%d",a,b,c);
What is the output?
17. Scope of Static Variable ............
in a file.
18. for(i=0; i<=10;i++,printf("%d",i)); +- (+- is there
in the questions)
20. Real Time Os should have
a)fast context switch
b)Virtual memory etc.
21. Messages are transferred in some E71 code, where after
7 bits of data,
1 bit of stopping data is to be transferred. what should be
done.
options were like
a) send directly
b) send after encoding
etc.
22. There are three processes A, B, C. A sends data to B. B
removes the
header stores it and sends the data to C. C returns it to
B. B receives the
message, identifies the message and adds the header that
was stored and
sends to A.B receives the messages from C such that
atmost 'm' messages
B
are pending.
Identify the best Data Structure.
23. A question in compiler about the heap and stack
allocation of memory.
24. struct
{
char a[3];
int b;
}x;
char *cp;
a) size of x is 7.
B
b)
c)
d) cp takes the size of a pointer.
(d ) is the ans.
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