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Wipro sample placement papers
WIPRO Aptitude Test
1.When a bicycle is in motion,the force of friction exerted by the ground on the two wheels is such that it acts
(a) In the backward direction on the front wheel and in the forward direction on the rear wheel.
(b) In the forward direction on the front wheel and in the backward direction on the rear wheel.
(c) In the backward direction on both the front and rear wheels.
(d) In the backward direction on both the front and rear wheels.
Ans. (d)
2. 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)
3. 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)
4. 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)
5. 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)
6. 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) 3/4
(d) None of the above
Ans. (a)
7. 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)
8. 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)
9. 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)
10. 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)
11. 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)
12. 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)
13. 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)
14. How many bonds are present in CO2 molecule?
(a) 1
(b) 2
(c) 0
(d) 4
Ans. (d)
15. In a balanced chemical equation
(a) Atoms are conserved
(b) Molecules are conserved
(c) Moles are conserved
(d) Reactant and product molecules are preserved
Ans. (a)
16. How many grams of NaOH will react with 0.2 equivalent of HCl?
(a) 0.59
(b) 0.285
(c) 1.18
(d) none of these
Ans. (a)
17. Which of the following is least acidic
(a) Ortho-cresol
(b) Para-cresol
(c) Phenol
(d) Meta-cresol
Ans. (b)
18. In Reimer-Tiemann's reaction, the reaction intermediate is
(a) Carbene
(b) Dichloro carbene
(c) Carbonion
(d) Carbonium ion
Ans. (b)
19. Which of the following is most acidic?
(a) C2H5OH
(b) CH3CHOHCH3
(c) Ethanol
(d) CH3OH
Ans. (b)
20.A catalyst
(a)always slows down the reaction
(b)always starts a rection that would not have ocurred at all otherwise
(c)causes changes in the rate of the reaction
(d)changes the quantities of the products formed
Ans. (c)
21.The rate of the first order reaction depends on the
(a) Concentration of the reactant
(b) Concentration of the product
(c) Time
(d) Temperature
Ans. (d)
22. The most abundant element in the universe is
(a) Hydrogen
(b) Helium
(c) Oxygen
(d) Silicon
Ans. (a)
23. Integrate 3x + 5 / (x3-x2-x+1)
(a) 1/2 log | (x+1)/(x-1) | - 4/(x-1)
(b) log |2+tanx|
(c) -(1+logx)/x
(d) 2 log|(tanx)/(tanx+2)
Ans. A
24. If y=cos-1(cosx + 4sinx)/(17)1/2, then dy/dx is
(a) 0
(b) 1
(c)-1
(d) none of these
Ans. (b)
25. If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6 .find the ratio of their 13th
terms
(a) 129/231
(b) 1/2
(c) 23/15
(d) None of the above
Ans. (a)
26. If the letters of the word "rachit" are arranged in all possible ways and these words are written
out as in a dictionary, what is the rank of the word "rachit".
(a) 485
(b) 480
(c) 478
(d) 481
Ans. (d)
27. Ravi's salary was reduced by 25%.Percentage increase to be effected to bring the salary
to the original level is
(a) 20%
(b) 25%
(c) 33 1/3%
(d) 30%
Ans. (c)
28. A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days.
In how many days will A alone finish the job
(a) 48
(b) 34 2/7
(c) 44
(d) 45
Ans. (a)
29. How long will a train 100m long travelling at 72kmph take to overtake another train
200m long travelling at 54kmph
(a) 70sec
(b) 1min
(c) 1 min 15 sec
(d) 55 sec
Ans. (b)
30. What is the product of the irrational roots of the equation (2x-1)(2x-3)(2x-5)(2x-7)=9?
(a) 3/2
(b) 4
(c) 3
(d) 3/4
Ans. (a)
31. Which of the following parameters is the same for molecules of all gases at a given temperature?
(a) Mass
(b) Momentum
(c) Speed
(d) Kinetic energy
Ans. (d)
32. A solid is completely immersed in liquid. The force exerted by the liquid on the solid will
(a) Increase if it is pushed deeper inside the liquid
(b) Change if its orientation is changed
(c) Decrease if it is taken partially out of the liquid
(d) None of the above
Ans. (c)
33. Select the correct statements
(a) A simple harmonic motion is necessarily periodic
(b) An oscillatory motion is necessarily periodic
(c) A periodic motion is necessarily oscillatory
(d) All of the above
Ans. (a)
34. An elecrton is injected into a region of uniform magnetic flux density with the components
of velocity parallel to and normal to the flux.What is the path of the electron?
(a) Helix
(b) Parabola
(c) Circle
(d) Rectangle
Ans. (a)
35. A constant voltage is applied between the 2 ends of a uniform metallic wire.
Some heat is developed in it. The heat developed is doubled if
(a) both the length and radius of the wire are halved.
(b) both the length and radius of the wire are doubled
(c) the radius of the wire is doubled
(d) the length of the wire is doubled
Ans. (b)
36. If Young's double slit experiment is performed in water
(a) the fringe width will decrease
(b) the fringe width will increase
(c) the fringe width remains unchanged
(d) there will be no fringe
Ans. (a)
37. The shape of a spot of light produced when bright sunshine passes perpendicular
through a hole of very small size is
(a) Square, because the hole is a square
(b) Round, because it is an image of the sun
(c) Round with a small penumbra around it
(d) Square with a small penumbra
Ans. (b)
38.Select the alternative that logically follows from the two given statements.
Some forms are books
All books are made of paper
(a) Some forms are made of paper
(b) Some forms are not made of paper
(c) No forms are made of paper
(d) None of the above
Ans. (a)
39.All toffees are chocolates
Some toffees are not good for health
(a) Some chocolates are not good for health
(b) Some toffees are good for health
(c) No toffees are good for health
(d) Both (a) and (b)
Ans. (a)
The questions 40-46 are based on the following pattern.The problems below contain a question and two statements giving certain data. You have to decide whether the data given in the statements are
sufficient for answering the questions.The correct answer is
(A) If statement (I) alone is sufficient but statement (II) alone is not sufficient.
(B) If statement(II) alone is sufficient but statement(I) alone is not sufficient.
(C) If both statements together are sufficient but neither of statements alone is sufficient.
(D) If both together are not sufficient.
(E) If statements (I) and (II) are not sufficient
40. What is the volume of a cubical box in cubic centimetres?
(I) One face of the box has an area of 49 sq.cms.
(II) The longest diagonal of the box is 20 cms.
Ans. D
41. Is z positive?
(I) y+z is positive
(II) y-z is positive
Ans. E
42. Is x>y ? x, y are real numbers?
(I) 8x = 6y
(II) x = y + 4
Ans. B
43. If a ground is rectangular, what is its width?
(I) The ratio of its length to its breadth is 7:2
(II) Perimeter of the playground is 396 mts.
Ans. C
44. If the present age of my father is 39 yrs and my present age is x yrs, what is x?
(I) Next year my mother will be four times as old as i would be.
(II) My brother is 2 years older than I and my father is 4 years older than my mother.
Ans. C
45. How many brothers and sisters are there in the family of seven children?
(I) Each boy in the family has as many sisters as brothers
(II) Each of the girl in the family has twice as many brothers as sisters
Ans. D
46. x is not equal to 0, is x + y = 0?
(I) x is the reciprocal of y
(II) x is not equal to 1
Ans. A
Following questions are based on letter's analogy.First pair of letters should have the same relationship as the second pair of letters or vice versa.
47. ? : BGLQ : : YDIN : VAFK
(a) EKNS
(b) DKMT
(c) DLMS
(d) EJOT
Ans. (d)
48. NLO : RPS : : ? : ZXA
(a) VUW
(b) VTR
(c) VTW
(d) TRP
Ans. (c)
49. If "segment" is coded as rffndou, then "ritual" is coded as
(a) shutbm
(b) qjutbk
(c) qhutbk
(d) qhubtk
Ans. (c)
50. If "football" is "cricket" ,"cricket" is "basketball" ,"basketball" is "volleyball","volleyball" is
"khokho" and "khokho" is cricket, which is not a ball game?
(a) cricket
(b) football
(c) khokho
(d) basketball
Ans. (a)
51. Which of the following is a recursive set of production
(a) S --> a|A, A --> S
(b) S --> a|A, A --> b
(c) S -->aA, A-->S
(d) None of these
Ans. (c)
Wipro Technical Questions with answers
1. An electron moving in an electromagnetic field moves in a
(a) In a straight path
(b) Along the same plane in the direction of its propagation
(c) Opposite to the original direction of propagation
(d) In a sine wave
Ans. (b)
2. The total work done on the particle is equal to the change in its kinetic energy
(a) Always
(b) Only if the forces acting on the body are conservative.
(c) Only if the forces acting on the body are gravitational.
(d) Only if the forces acting on the body are elastic.
Ans. (a)
3. The following unit measure energy:
(a) Kilo-watt hour.
(b) Volt*volt/sec*ohm.
(c) Pascal*foot*foot
(d) (Coulomb*coulomb)*farad
Ans. (a)
4. Astronauts in stable orbits around the earth are in a state of weightlessness because
(a) There is no gravitational force acting on them.
(b) The satellite and the air inside it have an acceleration equal to that of gravitational acceleration there.
(c) The gravitational force of the earth and the sun balance giving null resultant.
(d) There is no atmosphere at the height at which the satellites move.
Ans. (b)
5. An organ pipe, open at both ends and another organ pipe closed at one end, will resonate with each other, if their lengths are in the ratio of
(a) 1:1
(b) 1:4
(c) 2:1
(d) 1:2
Ans. (c)
6. During an isothermal expansion of an ideal gas
(a) Its internal energy increases.
(b) Its internal energy decreases.
(c) Its internal energy does not change.
(d) The work done by the gas is not equal to the quantity of heat absorbed by it.
Ans. (c)
7. A parallel plate capaciator is charged and the charging battery is then disconnected.If the plates of the capacitor are moved further apart by means of insulating handles
(a) The charge on the capacitor increases.
(b) The voltage across the plates increases.
(c) The capacitance increases.
(d) The electrostatic energy stored in the capacitor decreases.
Ans. (b)
8. Two equal negative charges q are fixed at point (0,a) and (0,-a) on the y-axis.A positive charge Q is released from rest at the point (2a,0) on the x-axis. The charge Q will
(a) Execute simple harmonic motion about the origin
(b) Move to the origin and remain at rest
(c) Move to infinity
(d) Execute oscillatory but not simple harmonic motion
Ans. (d)
9. A square conducting loop of length Lon a side carries a current I.
The magnetic field at the centre of the loop is
(a) Independant of L
(b) Proportional to L*L
(c) Inversely proportoinal to L
(d) Directly proportional to L
Ans. (c)
10. The focal length of a convex lens when placed in air and then in water will
(a) Increase in water with respect to air
(b) Increase in air with respect to water
(c) Decrease in water with respect to. air
(d) Remain the same
Ans. (a)
11. The maximum kinectic energy of the photoelectron emitted from the surface is dependant 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)
12. An electron orbiting in a circular orbit around the nucleus of the atom
(a) Has a magnetic dipole moment
(b) Exerts an electric force on the nucleus equal to that on it by the nucleus
(c) Does not produce a magnetic induction at the nucleus
(d) All of the above
Ans. (d)
13. The X-rays beam coming from an X-ray tube will be:
(a) Monochromatic
(b) Having all wavelengths smaller than a certain minimum wavelength
(c) Having all wavelengths larger than a certain minimum wavelength
(d) Having all wavelengths lying between a minimum and a maximum wavelength
Ans. (c)
14. The mass number of a nucleus is
(a) Always less than its atomic number
(b) Always more than its atomic number
(c) Always equal to its atomic number
(d) Sometimes more and sometimes equal to its atomic number
Ans. (d)
15. Two successive elements belonging to the first transition series have the same number of electrons partially filling orbitals. They are
(a) V and Cr
(b) Ti and V
(c) Mn and Cr
(d) Fe and Co
Ans. (c)
16. When n+l has the same value for two or more orbitals,the new electron enters the orbital where
(a) n is maximum
(b) n is minimum
(c) l is maximum
(d) l is minimum
Ans. b
17. A balloon filled with ethylene is pricked with a sharp pointed needle and quickly placed in a tank full of hydrogen at the same pressure. After a while the balloon would have
(a) Shrunk
(b) Enlarged
(c) Completely collapsed
(d) Remain unchanged in size
Ans. (b)
18. Which of the following statements is not true?
(a) The ratio of the mean speed to the rms speed is independant of temperature
(b) Tthe square of the mean speed of the molecules is equal to the mean squared speed at a certaintemperature
(c) Mean kinetic energy of the gas molecules at any given temperature is independant of the meanspeed
(d) None
Ans. (b)
19. Which of the following statements represent Raoult's Law
(a) Mole fraction of solvent = ratio of vapour pressure of the solution to vapour pressure of thesolvent
(b) Mole fraction of solute = ratio of vapour pressure of the solution to vapour pressure of thesolvent
(c) Mole fraction of solute = lowering of vapour pressure of the solution
(d) Mole fraction of solvent = lowering of vapour pressure of the solution
Ans. (a)
20. Elements having the same atomic number and the same atomic mass are known as
(a) Isotopes
(b) Isotones
(c) Isomers
(d) None of the above
21.Which is the most acidic amongst
(a) Nitrophenol
(b) O-toulene
(c) Phenol
(d) Cresol
22. Pure water does not conduct electricity because it is
(a) Almost not ionised
(b) Low boiling
(c) Neutral
(d) Readily decomposed
Ans. (a)
23. In a salt bridge, KCl is used because
(a) It is an electrolyte
(b) The transference number of K+ and Cl¯ is nearly the same
(c) It is a good conductor of electricity
(d) All of the above
Ans. (d)
24. A depolarizer used in the dry cell batteries is
(a) KCl
(b) MnO2
(c) KOH
(d) None of the above
Ans. (b)
25. The hydrolysis of alkyl halides by aqueous NaOH is best termed as
(a) Electrophylic substitution reaction
(b) Electrophylic addition reaction
(c) Nnucleophylic addition reaction
(d) Nucleophylic substitution reaction
Ans. (d)
26. The hydrocarbon that gives a red precipitate with ammoniacal cuprous chloride is (where 'º' means
a triple bond)
(a) CH3-CH2-CH2-CH3
(b) CH3-CºC-CH3
(c) CH2=CH-CH=CH2
(d) CH3-CH2-CºCH
Ans. (d)
27. Which of the following reagents is neither neutral nor basic
(a) Lucas' reagent
(b) Tollen's reagent
(c) Bayer's reagent
(d) Fehling's solution
Ans. (a)
28. The substance which is most easily nitrated
(a) Toluene
(b) Bbenzene
(c) Nitrobenzene
(d) Chlorobenzene
Ans. (a)
29. Carbylamine reaction is a test for
(a) Primary amine
(b) Secondary amine
(c) Tertiary amine
(d) Quarternary ammonium salt
Ans. (a)
30. Which of the following oxides cannot be reduced by carbon to obtain metal
(a) ZnO
(b) Al2O3
(c) Fe2O3
(d) PbO
Ans. (b)
31. Which of the following is not an oxide ore?
(a) Cassiterite
(b) Siderite
(c) Pyrolusite
(d) Bauxite
Ans. (b)
32. Which among the following is called philosopher's wool
(a) Cellulose
(b) Calamine
(c) Stellite
(d) Cerussite
Ans. (c)
33. Out of 10 white, 9 black and 7 red balls, in how many ways can we select one or more balls
(a) 234
(b) 52
(c) 630
(d) 879
Ans. (d)
34. A and B throw a dice. The probabilty that A's throw is not greater than B's is
(a) 5/12
(b) 7/12
(c) 11/12
(d) 5/36
Ans. (b)
35. Given two numbers a and b. Let A denote the single AM between these and S denote the sum of n AMsbetween them. Then S/A depends upon
(a) n
(b) n,a
(c) n,b
(d) n,a,b
Ans. (a)
36. 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 the these
Ans. (c)
In the following questions ~ represents the integral sign-for eg. 1~2[f(x)] means integration of the function f(x) over the interval 1 to2.
37. Value of -1~2[|2-x²|]dx, ie integration of the function |2-x²| over the interval -1 to 2.
(a) 0
(b) 1
(c) 2
(d) None of the above
Ans. (d)
38. If 0~P[log sinx]dx=k,then the value of 0~P/4[log(1 + tan x)]dx ,where P stands for pi,is
(a) -k/4
(b) k/4
(c) -k/8
(d) k/8
Ans. (c)
39. If a,b,c be in GP and p,q be respectively AM between a,b and b,c then
(a) 2/b=1/p+1/q
(b) 2/b=1/p-1/q
(c) 2=a/p-c/q
(d) None of the above
Ans. (a)
40. A solution of KMnO4 is reduced to MnO2 .The normality of solution is 0.6.The molarity is
(a) 1.8M
(b) 0.6M
(c) 0.1M
(d) 0.2M
Ans. (d)
The questions 41-46 are based on the following pattern.The problems below contain a question and two statements giving certain data. You have to decide whether the data given in the
statements are sufficient for answering the questions.The correct answer is
(A) If statement (I) alone is sufficient but statement (II) alone is not sufficient.
(B) If statement(II) alone is sufficient but statement(I) alone is not sufficient.
(C) If both statements together are sufficient but neither of statements alone is sufficient.
(D) If both together are not sufficient.
41. What is John's age?
(I) In 15 years John will be twice as old as Dias would be
(II) Dias was born 5 years ago
Ans. (C)
42. What is the distance from city A to city C in kms?
(I) City A is 90 kms from City B
(II) City B is 30 kms from City C
Ans. (D)
43.Is A=C ? A,B,C are real numbers
(I) A-B=B-C
(II) A-2C = C-2B
Ans. (C)
44. What is the 30th term of a given sequence ?
(I) The first two terms of the sequence are 1,1/2
(II) The common difference is -1/2
Ans. (A)
45.Was Avinash early, on time or late for work?
(I) He thought his watch was 10 minutes fast
(II) Actually his watch was 5 minutes slow
Ans. (D)
46. What is the value of A if A is an integer?
(I) A4 = 1
(II) A3 + 1 = 0
Ans. (B)
47. A person travels 12 km in the southward direction and then travels 5km to the right and then travels15km toward the right and finally travels
5km towards the east, how far is he from his starting place?
(a) 5.5 kms
(b) 3 km
(c) 13 km
(d) 6.4 km
Ans. (b)
48. X's father's wife's father's granddaughter uncle will be related to X as
(a) Son
(b) Nephew
(c) Uncle
(d) Grandfather
Ans. (c)
49. Find the next number in the series 1, 3 ,7 ,13 ,21 ,31
(a) 43
(b) 33
(c) 41
(d) 45
Ans. (a)
50. If in a certain code "RANGE" is coded as 12345 and "RANDOM" is coded as 123678.Then the code for the word "MANGO" would be
(a) 82357
(b) 89343
(c) 84629
(d) 82347
Ans. (d)
51. If "PROMPT" is coded as QSPLOS ,then "PLAYER" should be
(a) QMBZFS
(b) QWMFDW
(c) QUREXM
(d) URESTI
Ans. (a)
The questions 52-53 are based on the following datapeople A,B,C,D,E and F sit around a table for dinner.Since A does not like C, he doesn't sit either opposite or beside C.B and F always like to
sit opposite each other.
52. If A is beside F then who is are the two neighbours of B?
(a) D and C
(b) E and C
(c) D and E
(d) Either (a) or (b)
Ans. (c)
53. If D is adjacent to F then who is adjacent to C?
(a) E and B
(b) D and A
(c) D and B
(d) either (a) or (c)
Ans.(d)
54. Complete the sequence A, E ,I ,M ,Q ,U , _ , _
(a) B, F
(b) Y, C
(c) G, I
(d) K, O
Ans.(b)
55. A person travels 6km towards west, then travels 5km towards north ,then finally travels6km towards west. Where is he with respect to his starting position?
(a) 13km east
(b) 13km northeast
(c) 13km northwest
(d) 13km west
Ans. (c)
56. If A speaks the truth 80% of the times, B speaks the truth 60% of the times.What is the probability that they tell the truth at the same time
(a) 0.8
(b) 0.48
(c) 0.6
(d) 0.14
Ans.(b)
57. If the time quantum is too large, Round Robin scheduling degenerates to
(a) Shortest Job First Scheduling
(b) Multilevel Queue Scheduling
(c) FCFS
(d) None of the above
Ans. (c)
58. Transponders are used for which of the following purposes
(a) Uplinking
(b) Downlinking
(c) Both (a) and (b)
(d) None of the above
Ans. (c)
59. The format specifier "-%d" is used for which purpose in C
(a) Left justifying a string
(b) Right justifying a string
(c) Removing a string from the console
(d) Used for the scope specification of a char[] variable
Ans. (a)
60. Virtual functions allow you to
(a) Create an array of type pointer-to-base-class that can hold pointers to derived classes
(b) Create functions that have no body
(c) Group objects of different classes so they can all be accessed by the same function code
(d) Use the same function call to execute member functions to objects from different classes
62. A sorting algorithm which can prove to be a best time algorithm in one caseand a worst time algorithm in worst case is
(a) Quick Sort
(b) Heap Sort
(c) Merge Sort
(d) Insert Sort
Ans. (a)
63. What details should never be found in the top level of a top-down design?
(a) Details
(b) Coding
(c) Decisions
(d) None of the above
Ans. (c)
64. In an absolute loading scheme, which loader function is accomplished by assembler
(a) Reallocation
(b) Allocation
(c) Linking
(d) Both (a) and (b)
Ans. (d)
65. Banker's algorithm for resource allocation deals with
(a) Deadlock prevention
(b) Deadlock avoidance
(c) Deadlock recovery
(d) None of these
Ans. (b)
66. Thrashing can be avoided if
(a) The pages, belonging to the working set of the programs, are in main memory
(b) The speed of CPU is increased
(c) The speed of I/O processor are increased
(d) All of the above
Ans. (a)
67. Which of the following communications lines is best suited to interactive processing applications?
(a) Narrowband channels
(b) Simplex channels
(c) Full-duplex channels
(d) Mixedband channels
Ans. (b)
68. A feasibility document should contain all of the following except
(a) Project name
(b) Problem descriptions
(c) Feasible alternative
(d) Data flow diagrams
Ans. (d)
69. What is the main function of a data link content monitor?
(a) To detect problems in protocols
(b) To determine the type of transmission used in a data link
(c) To determine the type of switching used in a data link
(d) To determine the flow of data
Ans. (a)
70. Which of the following is a broadband communications channel?
(a) Coaxial cable
(b) Fiber optic cable
(c) Microwave circuits
(d) All of the above
Ans. (d)
71. Which of the following memories has the shortest access time?
(a) Cache memory
(b) Magnetic bubble memory
(c) Magnetic core memory
(d) RAM
Ans. (a)
72. A shift register can be used for
(a) Parallel to serial conversion
(b) Serial to parallel conversion
(c) Digital delay line
(d) All the above
Ans. (d)
73. In which of the following page replacement policies, Balady's anomaly occurs?
(a) FIFO
(b) LRU
(c) LFU
(d) NRU
Ans. (a)
74. Subschema can be used to
(a) Create very different, personalised views of the same data
(b) Present information in different formats
(c) Hide sensitive information by omitting fields from the sub-schema's description
(d) All of the above
Ans. (d)
