1.A 2MB PCM(pulse code modulation) has
a) 32 channels b) 30
voice channels & 1 signalling channel.
c) 31 voice channels
& 1 signalling channel.
d) 32 channels out
of which 30 voice channels, 1 signalling channel, & 1
Synchronizatio channel.
Ans: (c)
2. Time taken for 1 satellite hop in voice communication is
a) 1/2 second b) 1
seconds c) 4 seconds d) 2 seconds
Ans: (a)
3. A dishonest shopkeeper professes to sell pulses at the
cost price, but
he uses a false weight of 950gm. for a kg.
His gain is ?%.
4. Max number of satellite hops allowed in voice
communication is :
a) only one b) more than one c) two hops d) four hops Ans:
(c)
5. Conditional results after execution of an instruction in
a micro
processor is stored ina) register b) accumulator c) flag
register d) flag
register part of PSW(Program Status Word)
Ans: (d)
6.Frequency at which VOICE is sampled is
a) 4 Khz b) 8 Khz c) 16 Khz d) 64 Khz
Ans: (a)
7. Line of Sight is
a) Straight Line b) Parabolic c) Tx & Rx should be
visible to each other
d) none
Ans: (c)
8. Purpose of PC(Program Counter) in a MicroProcessor is
a) To store address of TOS(Top Of Stack)
b) To store address of next instruction to be executed.
c) count the number of instructions.
d) to store base address of the stack.
Ans: (b)
9. What action is taken when the processor under execution
is interrupted
by a non-maskable interrupt?
a) Processor serves the interrupt request after completing
the execution
of the current instruction.
b) Processor serves the interupt request after completing
the current task.
c) Processor serves the interupt request immediately.
d) Processor serving the interrupt request depends upon the
priority of
the current task under execution.
Ans: (a)
10. The status of the Kernel is
a) task b) process c) not defined. d) none of the above.
Ans: (b)
11. To send a data packet using datagram , connection will
be established
a) before data transmission.
b) connection is not established before data transmission.
c) no connection is required.
d) none of the above.
Ans: (c)
12.Word allignment is
a) alligning the address to the next word boundary of the
machine.
b) alligning to even boundary.
c) alligning to word boundary.
d) none of the above.
Ans: (a)
13. When a 'C' function call is made, the order in which
parameters passed
to the function are pushed into the stack is
a) left to right b) right to left
c) bigger variables are moved first than the smaller
variales.
d) smaller variables are moved first than the bigger ones.
e) none of the above.
Ans: (b)
14. What is the type of signalling used between two
exchanges?
a) inband b) common channel signaling c) any of the above
d) none of the above.
Ans: (a)
15.Buffering is
a) the process of temporarily storing the data to allow for
small
variation in device speeds
b) a method to reduce cross talks
c) storage of data within transmitting medium until the
receiver is ready
to receive.
d) a method to reduce routing overhead.
Ans: (a)
16. Memory allocation of variables declared in a program is
a) allocated in RAM. b) allocated in ROM. c) allocated on
stack.
d) assigned to registers.
Ans: (c)
17. Memory allocation of variables declared in a program is
a) allocated in RAM. b) allocated in ROM. c) allocated on
stack.
d) assigned to registers.
Ans: (c)
18. A software that allows a personal computer to pretend as
a computer
terminal is
a) terminal adapter b) bulletin board c) modem d) terminal
emulation
Ans: (d)
19. Find the output of the following program
int *p,*q;
p=(int *)1000;
q=(int *)2000;
printf("%d",(q-p));
Ans: 500
20. Which addressing mode is used in the following
statements:
(a) MVI B,55 (b) MOV B,A (c) MOV M,A
Ans. (a) Immediate addressing mode.
(b) Register Addressing Mode
(c) Direct addressing mode
21. RS-232C standard is used in _____________.
Ans. Serial I/O
22. Memory. Management in Operating Systems is done by
a) Memory Management Unit
b) Memory management software of the Operating System c)
Kernel
Ans: (b)
23.What is done for a Push opertion?
Ans: SP is decremented and then the value is stored.
24.Binary equivalent of 52?
Ans. 110100
25.Hexadecimal equivalent of 3452?
Ans. 72A
26.Explain Just In Time Concept ?
Ans. Elimination of waste by purchasing manufacturing
exactly when needed
27.A good way of unit testing s/w program is ?
Ans. User test
28. OOT uses?
Ans. Encapsulated of detect methods.
29. use of EDI ?
Ans. Electronic Transmission.
30. How is MRPII
different from MRP?
Ans. Modular version of man redundant initials.
31.Hard disk time for R/W head to move to correct sector?
Ans. Latency Time.
32.The percentage of times a page number bound in associate
register is
called?
Ans. Bit ratio.
33.Expand MODEM?
Ans. Modulator and Demodulator.
34. RDBMS file system can be defined as?
Ans. Interrelate
35.What is Super Key ?
Ans. Primary key and Attribute
36. Windows 95 supports
(a) Multiuser (b) n tasks (c) Both (d) None
Ans. (a)
37. In the command scanf, h is used for?
Ans. Short int.
38.A process is defined as?
Ans. Program in execution
39.What is A thread ?
Ans. Detachable unit of executable code.
40. How is memory management done in Win95 ?
Ans. Through paging and segmentation.
41.What is meant by polymorphism?
Ans. Redfinition of a base class method in a derived class.
42.What is the essential feature of inheritance?
Ans. All properties of existing class are derived.
43.What does the protocol FTP do?
Ans. Transfer a file b/w stations with user
authentification.
44.In the transport layer ,TCP is what type of protocol?
Ans. Connection oriented.
45. Why is a gateway used?
Ans. To connect incompatible networks.
46. How is linked list implemented?
Ans. By referential structures.
47. What method is used in Win95 in multitasking?
Ans. Non preemptive check.
48.What is a semaphore?
Ans. A method synchronization of multiple processes.
49.What is the precedence order from high to low ,of the
symbols?
ans. ( ) ++ / Ans.( ) , ++, /
50.Preorder of A*(B+C)/D-G ?
Ans.*+ABC/-DG.
51.What is the efficiency of merge sort?
Ans. O(n log n).
52.In which layer are routers used?
Ans.In network layer.
53.Which of the following sorting algorithem has average
sorting behavior -
-Bubble sort, merge sort, heap sort, exchange sort?
Ans. Heap sort
54.In binary search tree which traversal is used for getting
ascending
order values--Inorder ,post order,preorder?
Ans.Inorder.
55.What are device drivers used for enabling the hardware?
56.What is make command in unix ?
Ans. Used for creation of more than one file.
57.In unix .profile contains?
Ans. Start up program.
58.In unix 'ls 'stores contents?
Ans.inode block
59.Which of the following involves context switch
(a) system call (b) priviliged instruction (c) floating
poitnt exception
(d) all the above (e) none of the above
Ans: (a)
60. In OST, terminal emulation is done in
(a) sessions layer (b) application layer (c) presentation
layer
(d) transport layer
Ans: (b)
61.For 1 MB memory, the number of address lines required,
(a)11 (b)16 (c)22 (d) 24
Ans. (b)
62.Semaphore is used for?
(a) synchronization (b) dead-lock avoidance (c) box (d) none
Ans. (a).
63.Which holds true for the following statement
class c: public A, public B
a) 2 member in class A, B should not have same name
b) 2 member in class A, C should not have same name
c) both
d) none
Ans. (a)
64. Preproconia does
not do which one of the following
(a) macro (b) conditional compliclation (c) in type checking
(d) including
load file
Ans. (c)
65. Piggy backing is a technique for
a) Flow control b) Sequence c) Acknowledgement d)
retransmition
Ans. (c)
66. Which is not a memory management scheme?
a) buddy system b) swapping c) monitors d) paging
Ans : c
67. There was a circuit given using three nand gates with
two inputs and
one output.
Find the output.
a) OR b) AND c) XOR d) NOT
Ans. (a)
68. Iintegrated check value(ICV) are used as?
Ans. The client computes the ICV and then compares it with
the senders
value.
69. When applets are downloaded from web sites , a byte
verifier performs
_________?
Ans. Status check.
70. An IP/IPX packet received by a computer using... having
IP/IPX both
how the packet Is handled?
Ans. Read the, field in the packet header with to send IP or
IPX protocol.
71. The UNIX shell ....
a) does not come with the rest of the system
b) forms the interface between the user and the kernal
c) does not give any scope for programming
d) deos not allow calling one program from with in another
e) all of the above
Ans. (b)
72. In UNIX a files i-node ?
Ans. Is a data structure that defines all specifications of
a file like
the file size,number of lines to a file, permissions etc.
73. The very first process created by the kernal that runs
till the kernal
process is halts is
a) init b) getty c) both (a) and (b) d) none of these
Ans. (a)
74. In the process table entry for the kernel process, the
process id
value is
(a) 0 (b) 1 (c) 2 (d) 255 (e) it does not have a process
table entry
Ans. (a)
75. Which of the following API is used to hide a window?
a) ShowWindow b) EnableWindow c) MoveWindowd)
SetWindowPlacement
e) None of the above
Ans. (a)
76. Which function is the entry point for a DLL in MS
Windows 3.1?
a) Main b) Winmain c) Dllmain d) Libmain e) None
Ans. (b)
77. The standard source for standard input, standard output
and standard
error is
a) the terminal b) /dev/null
c) /usr/you/input, /usr/you/output/, /usr/you/error
respectively
d) None
Ans. (a)
78. The redirection operators > and >>
a) do the same function b) differ : > overwrites, while
>> appends
c) differ : > is used for input while >> is used
for output
d) differ : > write to any file while >> write only
to standard output
e) None of these
Ans. (b)
79. The command grep first second third /usr/you/myfile
a) prints lines containing the words first, second or third
from the
file /usr/you/myfile
b) searches for lines containing the pattern first in the
files
second, third, and /usr/you/myfile and prints them
c) searches the files /usr/you/myfiel and third for lines
containing the
words first or second and prints them
d) replaces the word first with the word second in the files
third
and /usr/you/myfile
e) None of the above
Ans. (b)
80. You are creating a Index on EMPNO column in the EMPLOYEE
table. Which
statement will you use?
a) CREATE INdEX emp_empno_idx ON employee, empno;
b) CREATE INdEX emp_empno_idx FOR employee, empno;
c) CREATE INdEX emp_empno_idx ON employee(empno);
d) CREATE emp_empno_idx INdEX ON employee(empno);
Ans. c
81. Which program construct must return a value?
a) Package b) Function c) Anonymous block d) Stored
Procedure
e) Application Procedure
Ans. b
82. Which Statement would you use to remove the
EMPLOYEE_Id_PK PRIMARY KEY
constraint and all depending constraints fromthe EMPLOYEE
table?
a) ALTER TABLE employee dROP PRIMARY KEY CASCAdE;
b) ALTER TABLE employee dELETE PRIMARY KEY CASCAdE;
c) MOdIFY TABLE employee dROP CONSTRAINT employee_id_pk
CASCAdE;
d) ALTER TABLE employee dROP PRIMARY KEY employee_id_pk
CASCAdE;
e) MOdIFY TABLE employee dELETE PRIMARY KEY employee_id_pk
CASCAdE;
Ans. a
83. Which three commands cause a transaction to end?
a) ALTER b) GRANT c) DELETE d) INSERT e) UPdATE
f) ROLLBACK
Ans. a ,b ,f
84. Under which circumstance should you create an index on a
table?
a) The table is small.
b) The table is updated frequently.
c) A columns values are static and contain a narrow range of
values
d) Two columns are consistently used in the WHERE clause
join condition of
SELECT
statements.
Ans.d
85. What was the first name given to Java Programming
Language.
a) Oak ? Java b) Small Talk c) Oak d) None
Ans.a
86. A certain radioactive element A, has a half life = t
seconds.
In (t/2) seconds the fraction of the initial quantity of the
element so
far decayed is nearly
(a) 29% (b) 15% (c) 10% (d) 45%
Ans. (a)
87. Which of the following plots would be a straight line ?
(a) Logarithm of decay rate against logarithm of time
(b) Logarithm of decay rate against logarithm of number of
decaying nuclei
(c) Decay rate against time
(d) Number of decaying nuclei against time
Ans. (b)
88. A radioactive element x has an atomic number of 100.
It decays directly into an element y which decays directly
into element z.
In both processes a charged particle is emitted.
Which of the following statements would be true?
(a) y has an atomic number of 102 (b) y has an atomic number
of 101
(c) z has an atomic number of 100 (d) z has an atomic number
of 101
Ans. (b)
89. If the sum of the roots of the equation ax2 + bx + c=0
is equal to the
sum of the squares of their reciprocals
then a/c, b/a, c/b are in
(a) AP (b) GP (c) HP (d) None of these
Ans. (c)
90. A man speaks the truth 3 out of 4 times. He throws a die
and reports
it to be a 6.
What is the probability of it being a 6?
(a) 3/8 (b) 5/8 (c) ¾ (d) None of the above
Ans. (a)
91. If cos2A + cos2B + cos2C = 1 then ABC is a
(a) Right angle triangle (b) Equilateral triangle (c) All
the angles are
acute
(d) None of these
Ans. (a)
92. Image of point (3,8) in the line x + 3y = 7 is
(a) (-1,-4) (b) (-1,4) (c) (2,-4) (d) (-2,-4)
Ans. (a)
93. The mass number of a nucleus is
(a) Always less than its atomic number (b) Always more than
its atomic
number
(c) Sometimes more than and sometimes equal to its atomic
number
(d) None of the above
Ans. (c)
94. The maximum KE of the photoelectron emitted from a
surface is
dependent on
(a) The intensity of incident radiation (b) The potential of
the collector
electrode
(c) The frequency of incident radiation
(d) The angle of incidence of radiation of the surface
Ans. (c).
95. Which of the following is not an essential condition for
interference
(a) The two interfering waves must be propagated in almost
the same
direction or
the two interfering waves must intersect at a very small
angle
(b) The waves must have the same time period and wavelength
(c) Amplitude of the two waves should be the same
(d) The interfering beams of light must originate from the
same source
Ans. (c)
96. When X-Ray photons collide with electrons
(a) They slow down (b) Their mass increases (c) Their wave
length increases
(d) Their energy decreases
Ans. (c).
97. An electron emits energy
(a) Because its in orbit (b) When it jumps from one energy
level to another
(c) Electrons are attracted towards the nucleus
(d) The electrostatic force is insufficient to hold the
electrons in orbits
Ans. (b).
98. An electron emits energy
(a) Because its in orbit (b) When it jumps from one energy
level to another
(c) Electrons are attracted towards the nucleus
(d) The electrostatic force is insufficient to hold the
electrons in orbits
Ans. (b).
99. How many bonds are present in CO2 molecule?
(a) 1 (b) 2 (c) 0 (d) 4
Ans. (d)
