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3i-Infotech Technical Paper – 9
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.
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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)
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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. 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)
18. Find the output of the following program
int *p,*q;
p=(int *)1000;
q=(int *)2000;
printf("%d",(q-p)); Ans: 500
19. 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
20. RS-232C standard is used in _____________. Ans. Serial I/O
21. Memory. Management in Operating Systems is done by
a) Memory Management Unit
b) Memory management software of the Operating System c) Kernel
Ans: (b)
22. What is done for a Push opertion?Ans: SP is decremented and then the
value is stored.
23. Binary equivalent of 52 Ans. 110100
24. Hexadecimal equivalent of 3452 Ans. 72A
25. Explain Just In Time Concept ? Ans. Elimination of waste by purchasing manufacturing exactly when
needed
26. A good way of unit testing s/w program is Ans. User test
27. OOT uses Ans. Encapsulated of detect methods
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28. EDI useful in Ans. Electronic Transmission
29. MRPII different from MRP Ans. Modular version of man redundant initials
30. Hard disk time for R/W head to move to correct sector Ans. Latency Time
31. The percentage of times a page number bound in associate register is called
Ans. Bit ratio
32. Expand MODEM Ans. Modulator and Demodulator
33. RDBMS file system can be defined as Ans. Interrelated
34. Super Key is Ans. Primary key and Attribute
35. Windows 95 supports
(a) Multiuser (b) n tasks (c) Both (d) None Ans. (a)
36. In the command scanf, h is used for Ans. Short int
37. A process is defined as Ans. Program in execution
38. A thread is Ans. Detachable unit of executable code)
39. A thread is 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
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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.( ) , ++, /
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 Ans.To provide software for enabling the hardware
56. What are device drivers used for Ans.To provide software for enabling the hardware
57. What is make command in unix Ans. Used forcreation of more than one file
58. In unix .profile contains Ans. Start up program
59. In unix 'ls 'stores contents in Ans.inode block
60. 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)
61. In OST, terminal emulation is done in
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(a) sessions layer (b) application layer (c) presentation layer
(d) transport layer Ans: (b)
62. For 1 MB memory, the number of address lines required,
(a)11 (b)16 (c)22 (d) 24 Ans. (b)
63. Semaphore is used for
(a) synchronization (b) dead-lock avoidance (c) box (d) none Ans. (a)
64. 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)
65. Preproconia.. does not do which one of the following
(a) macro (b) conditional compliclation (c) in type checking (d) including load file
Ans. (c)
66. Piggy backing is a technique for
a) Flow control b) Sequence c) Acknowledgement d) retransmition Ans. (c)
67. Which is not a memory management scheme?
a) buddy system b) swapping c) monitors d) paging Ans : c
68. 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)
69. Iintegrated check value(ICV) are used as: Ans. The client computes the ICV
and then compares it with the senders value.
70. When applets are downloaded from web sites , a byte verifier performs _________?
Ans. Status check
71. 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.
72. The UNIX shell ....
a) does not come with the rest of the system
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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)
73. 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.
74. 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)
75. 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)
76. 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)
77. 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)
78. 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)
79. 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)
80. 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
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e) None of the above
Ans. (b)
81. 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
82. Which program construct must return a value?
a) Package b) Function c) Anonymous block d) Stored Procedure
e) Application Procedure Ans. b
83. 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
84. Which three commands cause a transaction to end? (Chosse three)
a) ALTER b) GRANT c) DELETE d) INSERT e) UPdATE
f) ROLLBACK Ans. a ,b ,f
85. 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
86. What was the first name given to Java Programming Language.
a) Oak - Java b) Small Talk c) Oak d) None Ans.a
87. 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
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far decayed is nearly
(a) 29% (b) 15% (c) 10% (d) 45% Ans. (a)
88. 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)
89. 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)
90. 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)
91. 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) � (d) None of the above Ans. (a)
92. 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)
93. 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)
94. 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)
95. 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
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(d) The angle of incidence of radiation of the surface Ans. (c
96. 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)
97. 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)
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. 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)
100. How many bonds are present in CO2 molecule?
(a) 1 (b) 2 (c) 0 (d) 4 Ans. (d)
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Hi friends........,
I am Deepika and I have attended the off campus interviews of INFOTECH in CBIT College,Gandipet. The test pattern is rather sinple and less tedious. The main and the foremost thing is ,FASTNESS,. It comprises of four sections.
i)APTITUDE TEST , ii) GROUP DISCUSSION , iii)TECHNICAL Interview , iv) HR Interview
i)The Aptitude was divided into 3 other sub sections(50 Q).
a)Quant(30 Q) b)Comprehension(9 Q) c)Synonyms(3 Q) d)Antonyms(3 Q) e) Bars n graphs(5 Q).
a) Consisted of small fractions, ratios , proportions, 2 to 3 problems on time n distance, boats n streams , areas etc,,. Coming to the fractios the questions were like,,,
1) Which is greater among 19/18 , 9/17 , 2/3 ...??
2) Which fraction lies b/w 5/2 and 3/5....?? etc....,,,
All the others were rather easy to finish and freinds!!!! just a brief review over all the above topics will definitely assure u to the next round.
b) Comprehension was related to "icc and its originity".
c) Bars n graphs were very ,very simple as the answers were almost hidden in the graphs( figures ) only.
Fastness in the main criteria here. But, that should not possess inaccuracy,Both of them (fastness and accuracy) should move with the same pace.
ii) I was shortlisted n then we, Switched over to the GD session wich consisted of 10 members in each group.Initially the topic was:
"Individual,s role in communal harmony in india."
Nobody in our group were aware of that so, upon the request(of me) he altered it to:
"Women,s role in the nation,s development."
Everybody argued and finally, only two of them were selected for the next round in wich I was also there.The other topics wich my friends went through were :
"Should a foreign coach be recruited for team india,s victory in the world tour?"
"advertising softdrinks by celebrities should be banned or not?" etc,,,....
Coming to the Technical interview,he greeted me with a wide smile n it went on as follows:
Q: Ok deepika! how did u feel abt the aptitude and GD?
Me:It was rather easy sir.
Q: So,do u have gud communication skills?(since in GD i secured more weightage for it),Prove urself?
Me: Sir , how could i? Just give me some topic i,ll speak over it and put my views infront of u so dat u can judge from dat.
Q: Your topic is multivibrators,Now speak for over 5 min.
Me: Said (quite impressed).
Q: Wat r ur strengths?
Me: Said( asked to give an example for one of them).
Q:Wat r ur hobbies?
Me:As it includes reading books he, asked me to give a brief view of the recently novel wich u read.
Q:Why is ur % (from 10th to B.Tech) is taking a decreasing curve?
Me:Said.
Q:What do u know abt amplifiers?
Me:(class A , B , C , AB)said abt them but not upto the mark.Even though it was not satisfactory as i was very confident abt watever i said he just listened to it.
So on soforth,he asked me abt my paper presentation,a bit of C-language(stacks),a bit of Microprocessors and operating systems.
All this went on for over 30 min. Later I was summoned for HR interview,It lasted for just 5-6 min.He asked me my EAMCET rank,family background,bond n pay awareness.He also offered to chose b/w S/w n H/w,being an electronic student,T chose the latter.He was quite impressed by my answers in the interview.
The next day I was selected and mine was the very 1st name out of the whole college wich comprised(the list) of only 4 members.As it is a off-campus around 15-20 colleges came uo n abt 50-199 cleared the 1st round n finally among 40-5- people(from all the colleges) I was shortlisted. HURRAY!!!!!!
