COMPUTER AWARENESS TEST
1.In the command scanf, h is used for
Ans. Short int
2.A process is defined as
Ans. Program in execution
3.A thread is
Ans. Detachable unit of executable code)
4.What is the advantage of Win NT over Win 95
Ans. Robust and secure
5.How is memory management done in Win95
Ans. Through paging and segmentation
6.What is meant by polymorphism
Ans. Redfinition of a base class method in a derived class
7.What is the essential feature of inheritance
Ans. All properties of existing class are derived
8.What does the protocol FTP do
Ans. Transfer a file b/w stations with user authentification
9.In the transport layer ,TCP is what type of protocol
Ans. Connection oriented
10.Why is a gateway used
Ans. To connect incompatible networks
11.How is linked list implemented
Ans. By referential structures
12.What method is used in Win95 in multitasking
Ans. Non preemptive check
13.What is meant by functional dependency
14.What is a semaphore
Ans. A method synchronization of multiple processes
15.What is the precedence order from high to low ,of the symbols ( ) ++ /
Ans.( ) , ++, /
16.Preorder of A*(B+C)/D-G
Ans.*+ABC/-DG
18. B-tree (failure nodes at same level)
19. Dense index (index record appers for every search -key in file)
20.What is the efficiency of merge sort
Ans. O(n log n)
21.A program on swaping ( 10,5 )was given (candidate cannot
recollect)
22.In which layer are routers used
Ans.In network layer
23.In which layer are packets formed ( in network layer )
24.heap ( priority queue )
25.copy constructor ( constant reference )
26.Which of the following sorting algorithem has average sorting behavior --
Bubble sort,merge sort,heap sort,exchange
sort
Ans. Heap sort
27.In binary search tree which traversal is used for getting ascending order
values--Inorder ,post order,preorder
Ans.Inorder
28.What are device drivers used for
Ans.To provide software for enabling the hardware
29. Irrevalent to unix command ( getty)
30.What is fork command in unix
Ans. System call used to create process
31.What is make command in unix
Ans. Used forcreation of more than one file
32.In unix .profile contains
Ans. Start up program
33.In unix echo is used for ( answer C)
34.In unix 'ls 'stores contents in
Ans.inode block
QUANTITATIVE SECTION
1.In a class composed of x girls and y boys what part of the class is composed
of girls
A.y/(x + y)
B.x/xy
C.x/(x + y)
D.y/xy
Ans.C
2.What is the maximum number of half-pint bottles of cream that can be filled
with a 4-gallon can of cream(2 pt.=1 qt. and 4 qt.=1 gal)
A.16
B.24
C.30
D.64
Ans.D
3.If the operation,^ is defined by the equation x ^ y = 2x + y,what is the
value of a in 2 ^ a = a ^ 3
A.0
B.1
C.-1
D.4
Ans.B
4.A coffee
shop blends 2 kinds of coffee,putting in 2 parts
of a 33p. a gm. grade to 1 part of a 24p. a gm.If the mixture is changed to 1
part of the 33p. a gm. to 2 parts of the less expensive grade,how much will the
shop save in blending 100 gms.
A.Rs.90
B.Rs.1.00
C.Rs.3.00
D.Rs.8.00
Ans.C
5.There are 200 questions on a 3 hr examination.Among these questions are 50
mathematics problems.It is suggested that twice as much time be spent on each
maths problem as for each other question.How many minutes should be spent on
mathematics problems
A.36
B.72
C.60
D.100
Ans.B
6.In a group of 15,7 have studied Latin,
8 have studied Greek, and 3 have not studied either.How many of these studied
both Latin and Greek
A.0
B.3
C.4
D.5
Ans.B
7.If 13 = 13w/(1-w) ,then (2w)2 =
A.1/4
B.1/2
C.1
D.2
Ans.C
8. If a and b are positive integers and (a-b)/3.5 = 4/7, then
(A) b < a
(B) b > a
(C) b = a
(D) b >= a
Ans. A
9. In june a baseball team that played 60 games had won 30% of its game played.
After a phenomenal winning streak this team raised its average to 50% .How many
games must the team have won in a row to attain this average?
A. 12
B. 20
C. 24
D. 30
Ans. C
10. M men agree to purchase a gift for Rs. D. If three men drop out how much
more will each have to contribute towards the purchase of the gift/
A. D/(M-3)
B. MD/3
C. M/(D-3)
D. 3D/(M2-3M)
Ans. D
11. A company contracts to paint 3 houses. Mr.Brown can paint a house in 6 days
while Mr.Black would take 8 days and Mr.Blue 12 days. After 8 days Mr.Brown
goes on vacation and Mr. Black begins to work for a period of 6 days. How many
days will it take Mr.Blue to complete the contract?
A. 7
B. 8
C. 11
D. 12
Ans.C
12. 2 hours after a freight train leaves Delhi a passenger train leaves the
same station travelling in the same direction at an average speed of 16 km/hr.
After travelling 4 hrs the passenger train overtakes the freight train. The
average speed of the freight train was?
A. 30
B. 40
C.58
D. 60
Ans. B
13. If 9x-3y=12 and 3x-5y=7 then 6x-2y = ?
A.-5
B. 4
C. 2
D. 8
Ans. D
ANALYTICAL ABILITY
1. The office staff of
XYZ corporation presently consists of three bookeepers--A, B, C and 5
secretaries D, E, F, G, H. The management is planning to open a new office in
another city using 2 bookeepers and 3 secretaries of the present staff . To do
so they plan to seperate certain individuals who don't function well together.
The following guidelines were established to set up the new office
I. Bookeepers A and C are
constantly finding fault with one another and should not be sent together to
the new office as a team
II. C and E function well alone but not as a team , they should be seperated
III. D and G have not been on speaking terms and shouldn't go together
IV Since D and F have been competing for promotion they shouldn't be a team
1.If A is to be moved as
one of the bookeepers,which of the following cannot be a possible working unit.
A.ABDEH
B.ABDGH
C.ABEFH
D.ABEGH
Ans.B
2.If C and F are moved to the new office,how many combinations are possible
A.1
B.2
C.3
D.4
Ans.A
3.If C is sent to the new office,which member of the staff cannot go with C
A.B
B.D
C.F
D.G
Ans.B
4.Under the guidelines developed,which of the following must go to the new
office
A.B
B.D
C.E
D.G
Ans.A
5.If D goes to the new office,which of the following is/are true
I.C cannot go
II.A cannot go
III.H must also go
A.I only
B.II only
C.I and II only
D.I and III only
Ans.D
2.After months of talent searching for an administrative assistant to the
president of the college the field of applicants has been narrowed down to
5--A, B, C, D, E .It was announced that the finalist would be chosen after a
series of all-day group personal interviews were held.The examining committee
agreed upon the following procedure
I.The interviews will be held once a week
II.3 candidates will appear at any all-day interview session
III.Each candidate will appear at least once
IV.If it becomes necessary to call applicants for additonal interviews, no more
1 such applicant should be asked to appear the next week
V.Because of a detail in the written applications,it was agreed that whenever
candidate B appears, A should also be present.
VI.Because of travel difficulties it was agreed that C will appear for only 1
interview.
1.At the first interview
the following candidates appear A,B,D.Which of the follwing combinations can be
called for the interview to be held next week.
A.BCD
B.CDE
C.ABE
D.ABC
Ans.B
2.Which of the following is a possible sequence of combinations for interviews
in 2 successive weeks
A.ABC;BDE
B.ABD;ABE
C.ADE;ABC
D.BDE;ACD
Ans.C
3.If A ,B and D appear for the interview and D is called for additional
interview the following week,which 2 candidates may be asked to appear with D?
I. A
II B
III.C
IV.E
A.I and II
B.I and III only
C.II and III only
D.III and IV only
Ans.D
4.Which of the following correctly state(s) the procedure followed by the
search committee
I.After the second interview all applicants have appeared at least once
II.The committee sees each applicant a second time
III.If a third session,it is possible for all applicants to appear at least
twice
A.I only
B.II only
C.III only
D.Both I and II
Ans.A
3. A certain city is served by subway lines A,B and C and numbers 1 2 and 3
When it snows , morning service on B is delayed
When it rains or snows , service on A, 2 and 3 are delayed both in the
morning and afternoon
When temp. falls below 30 degrees farenheit afternoon service is cancelled
in either the A line or the 3 line,
but not both.
When the temperature rises over 90 degrees farenheit, the afternoon service
is cancelled in either the line C or the
3 line but not both.
When the service on the A line is delayed or cancelled, service on the C line
which connects the A line, is delayed.
When service on the 3 line is cancelled, service on the B line which
connects the 3 line is delayed.
Q1. On Jan 10th,
with the temperature at 15 degree farenheit, it snows all day. On how many
lines will service be
affected, including both morning and
afternoon.
(A) 2
(B) 3
(C) 4
(D) 5
Ans. D
Q2. On Aug 15th with the temperature at 97 degrees farenheit it begins to rain
at 1 PM. What is the minimum number
of lines on which service will be affected?
(A) 2
(B) 3
(C) 4
(D) 5
Ans. C
Q3. On which of the following occasions would service be on the greatest number
of lines disrupted.
(A) A snowy afternoon with
the temperature at 45 degree farenheit
(B) A snowy morning with the temperature at 45 degree farenheit
(C) A rainy afternoon with the temperature at 45 degree farenheit
(D) A rainy afternoon with the temperature at 95 degree farenheit
Ans. B
4. In a certain society, there are two marriage groups, red and brown. No
marriage is permitted within a group. On marriage, males become part of their
wives groups; women remain in their own group. Children belong to the same
group as their parents. Widowers and divorced males revert to the group of
their birth. Marriage to more than one person at the same time and marriage to
a direct descendant are forbidden
Q1. A brown female could
have had
I. A grandfather born Red
II. A grandmother born Red
III Two grandfathers born Brown
(A) I only
(B) III only
(C) I, II and III
(D) I and II only
Ans. D
Q2. A male born into the brown group may have
(A) An uncle in either
group
(B) A brown daughter
(C) A brown son
(D) A son-in-law born into red group
Ans. A
Q3. Which of the following is not permitted under the rules as stated.
(A) A brown male marrying
his father's sister
(B) A red female marrying her mother's brother
(C) A widower marrying his wife's sister
(D) A widow marrying her divorced daughter's ex-husband
Ans. B
Q4. If widowers and divorced males retained their group they had upon marrying
which of the following would be permissible ( Assume that no previous marriage
occurred)
(A) A woman marrying her
dead sister's husband
(B) A woman marrying her divorced daughter's ex-husband
(C) A widower marrying his brother's daughter
(D) A woman marrying her mother's brother who is a widower.
Ans. D
5. I. All G's are H's
II. All G's are J's or K's
III All J's and K's are G's
IV All L's are K's
V All N's are M's
VI No M's are G's
Q1. If no P's are K's
which of the following must be true
(A) No P is a G
(B) No P is an H
(C) If any P is an H it is a G
(D) If any P is a G it is a J
Ans. D
Q2. Which of the following can be logically deduced from the stated conditions
(A) No M's are H's
(B) No H's are M's
(C) Some M's are H's
(D) No N's are G's
Ans. D
Q3. Which of the following is inconsistent with one or more conditions
(A) All H's are G's
(B) All H's are M's
(C) Some H's are both M's and G's
(D) No M's are H's
Ans. C
Q4. The statement "No L's are J's" is
I. Logically deducible from
the conditions stated
II Consistent with but not deducible from the conditions stated
III. Deducible from the stated conditions together with the additional
statements "No J's are K's"
(A) I only
(B) II only
(C) III only
(D) II and III only
Ans. D
SECTION 1 -- DIGITAL SECTION
1. In order to find out stack fault of a three input nand gate how many
necessary input vectors are needed ?
2. What is parity generation ?
3. A nand gate becomes ___ gate when used with negative logic ?
4. What is the advantage of cmos over nmos ?
5. What is the advantage of syncronous circuits over asynchronous circuits ?
6. What is the function of ALE in 8085 ?
7. A voice signal sample is stored as one byte. Frequency range is 16 Hz to 20
Hz. What is the memorysize required to store 4 minutes voice signal?
8. What will the controller do before interrupting CPU?
9. In a normalised floating point representation, mantissa is represented using
24 bits and exponent with 8 bits using signed representation. What is range ?
10. The stack uses which policy out of the following-- LIFO, FIFO, Round Robin
or none of these ?
11. Where will be the actual address of the subroutine is placed for vectored
interrupts?
12. Give the equivalent Gray code reprasentation of AC2H.
13.What is the memory space required if two unsigned 8 bit numbers are
multiplied ?
14. The vector address of RST 7.5 in 8085 processor is _______.
Ans. 003C (multiply 7.5 by 8 and convert to hex)
15. Subtract the following hexadecimal numbers--- 8416 - 2A16
16. Add the following BCD numbers--- 1001 and 0100
17. How much time does a serial link of 64 Kbps take to transmit a picture with
540 pixels.
18. Give the output when the input of a D-flip flop is tied to the output
through the XOR gate.
19. Simplify the expression AB + A( B + C ) + B ( B + C )
20. Determine the logic gate to implement the foolowing terms--ABC, A+B+C
21. Implement the NOR gate as an inverter.
22. What is the effect of temperature on the Icb in a transistor
23. What is the bit storage
capacity of a ROM with a 512*4 organisation?
24. What is the reason of the refresh operation in dynamic RAM's ?
25. Suppose that the D input of a flip flop changes from low to high in the
middle of a clock pulse.Describe what happens if the flip flop is a positive
edge triggered type?
26. How many flip flops are required to produce a divide by 32 device ?
27. An active HIGH input S-R latch has a 1 on the S input and a 0 on the R
input. What state is the latch in?
28. Implement the logic equation Y = C^BA^
+ CB^A + CBA with a multiplexer. (where C^ stands for C complement)
29.Equivalent Gray code reprasentation of AC2H.
30. What does a PLL consist of ?
We advice you to know the design of PLL as questions pertaining to this may be
asked
SECTION 2 - SOFTWARE SECTION
1. The starting location of an array is 1000. If the array[1..5/...4] is stored
in row major order, what is the location of element [4,3]. Each word occupies 4
bytes.
2. In a tertiary tree, which has three childs for every node, if the number of
internal nodes are N, then the total number of leaf nodes are
3. Explain the term "locality of reference" ?
4. What is the language used for Artificial
Intelligence
Ans: lisp
5. What is the character set used in JAVA 2.0 ?
Ans: Unicode
6. char a =0xAA ;
int b ;
b = (int) a ;
b = b >> 4 ;
printf("%x",b);
What is the output of the above program segment ?
7. struct s1 { struct { struct { int x; } s2 } s3 }y;
How does one access x in the above given structure definition ?
8. Why there is no recursion in Fortran ?
Ans. There is no dynamic allocation.
9. What is the worst case complexity of Quick sort?
Ans. O(n2)
10. What will be sequence of operating
system activities when an interrupt occurs ?
11. In a sequential search, what is the average number of comparisons it takes
to search through n elements ?
Ans: (n+1)/2.
12. What is the size of the array declared as double * X[5] ?
Ans. 5 * sizeof ( double * )
13. A binary search tree with node information as 1,2,3,4,5,6,7,8 is given.
Write the result obtained on preorder traversal of the binary search tree ?
Ans : 53124768
14. If size of the physical memory is 232-1, then what is the size of the
virtual
memory ?
15. S -> A0B
A-> BB|0
B-> AA|1
How many strings of length 5 are possible with the above productions?
16. (3*4096+15*256+3*16+3). How many 1's are there in the binary representation
of the result ?
Ans. 10
17. In memory mapped I/O how is I/O is accessed ?
18. What is the use of ALE in 8085 ?
Ans To latch the lower byte of the address.
19. If the logical memory of 8 X 1024 is mapped into 32 frames, then the number
of bits for the logical address are____ ?
Ans. 13
20. Context free grammar is useful for which purpose ?
21. In ternary number representation, numbers are represented as 0,1,-1.(Here
-1 is represented as 1 bar.) How is 352/9 represented in ternary number
representation?
22. There are processes which take 4,1,8,1 machine cycles respectively. If
these are executed in round robin fashion with a time quantum of 1, what is the
time it take for process 4 to complete ?
Ans. 9
23. The minimum frequency of operation is specified for every processor
because......
a)for interfacing slow peripherals
b)dynamic memory refreshing.
c)to make compatible with other processor.
24. For linked list implementation , which search is not applicable ?
Ans: Binary search.
25. Each character is represented by 7 bits, 1 bit is used to represent error
bit and another bit for parity. If total number of bits transmitted is 1200
bits, then what is the number of symbols that can be transmitted ?
Ans: 133
26. Explain set associativity of cache ?
27. Write the postfix form of the following expression .
A+[[(B+C)+(D+E)*F]/G]
28. What is the function of the linker?
29. void f(int y)
{
struct s *ptr;
ptr = malloc (sizeof (struct)+99*sizeof(int));
}
struct s{
int i;
float p;
};
when free (ptr) is executed, then what will happen?
30. To concatenate two linked lists strings, the order is O(1) is obtained for
what kind of list?