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PET 8 Flashcards

1
Q

The term (1+i)^n, also denoted as (F/
Pi,n) is called:

A. equal-payment-series compound-amount
factor
B. equal-payment-sinking-fund factor
C. single payment compound-amount
factor
D. single payment present-worth factor

A

C. single payment compound-amount
factor

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2
Q

What is defined as the reduction or fall of the value of an asset due to constant use and passage of time?

A. Depreciation
B. Depletion
C. Deflation
D. Inflation

A

A. Depreciation

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3
Q

Which of the following type of class
allows only one object of it to be
created?

A. Virtual class
B. Abstract class
C. Singleton class
D. Friend class

A

C. Singleton class

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4
Q

What will be the output of the program?
#include<stdio.h>
int main()
{
int i=1;
switch(i)
{
printf("Hello\n");
case 1:
printf("Hi\n");
break;
case 2:
printf("\nBye\n");
break;
}
return 0;
}</stdio.h>

A. Hello, Hi
B. Bye
C. Hi
D. Hello, Bye

A

C. Hi

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5
Q

Which of the following concepts means determining at runtime what method to invoke?

A. Dynamic Typing
B. Dynamic loading
C. Dynamic binding
D. Data hiding

A

C. Dynamic binding

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6
Q

How many instances of an abstract
class can be created?

A. 13
B. 5
C. 1
D. 0

A

D. 0

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7
Q

Which of the following concepts
provides facility of using object of one
class inside another class?

A. Inheritance
B. Composition
C. Encapsulation
D. Abstraction

A

B. Composition

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8
Q

The use of the break statement in a
switch statement is

A. compulsory
B. optional
C. not allowed. It gives an error message
D. to check an error

A

B. optional

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9
Q

Which of the following concepts means
wrapping up of data and functions
together?

A. Polymorphism
B. Inheritance
C. Abstraction
D. Encapsulation

A

D. Encapsulation

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10
Q

Which of the following statements is
false?

A. A function is a block of code that performs
a specific task
B. Functions allow programmers to break
large and complex problems into small and
manageable tasks
C. Functions can be called, or invoked,
only once in a program
D. Functions allow programmers to use
existing code to perform common tasks

A

C. Functions can be called, or invoked,
only once in a program

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11
Q

When you pass a variable_,C++
passes only the contents of the variable
to the receiving function

A. by reference
B. globally
C. locally
D. by value

A

D. by value

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12
Q

Which of the following statement is
correct?

A. Object is an instance of a class.
B. Object is an instance of data type.
C. Class is an instance of object.
D. Class is an instance of data type.

A

A. Object is an instance of a class.

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13
Q

A default catch block catches

A. all thrown objects that have been
caught by an earlier catch block
B. any thrown object that has not been
caught by an earlier catch block
C. all thrown objects
D. no thrown objects

A

A. all thrown objects that have been
caught by an earlier catch block

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14
Q

What will be the output of the program?
#include<stdio.h>
int main()
{
int k, num= 30;
k=(num<10)?100:200;
printf("%d\n", num);
return 0;
}</stdio.h>

A. 100
B. 200
C. 500
D. 30

A

D. 30

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15
Q

Which of the following is not logical
operator?

A. !!
B. !
C. &&
D. &

A

D. &

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16
Q

A base class may also be called a

A. child class
B. derived class
C. parent class
D. subclass

A

C. parent class

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17
Q

A system program that sets up an
executable program in main memory
ready for execution is

A. assembler
B. linker
C. compiler
D. loader

A

D. loader

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18
Q

How many times the program will print
“IndiaBIX”?
#include<stdio.h>
int main()
{
printf("IndiaBIX");
mainO);
return 0;
}</stdio.h>

A. Till stack overflows
B. Infinite times
C. 65535 times
D. 32767 times

A

A. Till stack overflows

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19
Q

Understanding the Cartesian coordinate
system will help the beginning drafter

A. control the accuracy of the drawing
B. select a different text style
C. produce a visible grid system
D. choose various line types

A

A. control the accuracy of the drawing

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20
Q

How many times “engineer” is get
printed?
#include<stdio.h>
int main()
{
int x;
for(x=-1; X<=10; x++)
{
if(x<5)
continue;
else
break;
printf("engineer");
}
return 0;
}</stdio.h>

A. 11 times
B. 10 times
C. Infinite times
D. O times

A

D. O times

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21
Q

When the minimum and maximum
number of instances of an entity is one,
you know which of the following?

A. Mandatory one
B. Optional one
C. Cannot tell
D. Mandatory many

A

A. Mandatory one

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22
Q

What will be the output of the program?
#include<stdio.h>
int main()
{
int i=3;
i=i++;
printf("%d\n", i);
return 0;
}</stdio.h>

A. 6
B. 4
C. 5
D. 3

A

B. 4

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23
Q

A program that converts a high-level
language program to a set of
instructions that can run on a computer
is called a

A. All of these choices
B. Debugger
C. Editor
D. Compiler

A

D. Compiler

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24
Q

Bug means

A. A difficult syntax error in a program
B. All of these choices
C. Documenting programs using an efficient
documentation tool
D. A logical error in a program

A

D. A logical error in a program

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25
Q

A line with a tapering width can be
easily created by using the ____ tool.

A. line
B. circle
C. polyline
D. eclipse

A

C. polyline

26
Q

What will be the output of the program?
#include<stdio.h>
int mainO)
{
int i=3;
switch(i)
{
case 1:
printf("Hello\n");
case 2:
printf("Hi\n");
case 3:
continue;
default:
printf("Bye\n");
}
return 0;
}</stdio.h>

A. No output
B. Bye
C. Error: Misplaced continue
D. Hello Hi

A

C. Error: Misplaced continue

27
Q

Which of the following statements are
correct about the below program?
#include<stdio.h>
int main()
{
inti=10,j=20;
if(i=5) && if(j= 10)
printf("Have a nice day");
return 0;
}</stdio.h>

A. Error: Expression syntax
B. Output: Have a nice day
C. Error: Undeclared identifier if
D. No output

A

A. Error: Expression syntax

28
Q

It is the minimum angle of incidence at which light ray may strike the interface of two media and result in an angle of refraction of 90°.

A. Critical Angle
B. Acceptance Angle
C. Cut-off Angle
D. Any of these choices

A

A. Critical Angle

29
Q

Light frequencies that are too low to be
seen:

A. Infrared
B. Ultraviolet
C. Cosmic rays
D. Gamma rays

A

A. Infrared

30
Q

It states that when visible light or high
frequency electromagnetic radiation
illuminates a metallic surface, electrons
are emitted:

A. Maxwell’s Law
B. Huygen’s Principle
C. Snell’s Law
D. Planck’s Law

A

D. Planck’s Law

31
Q

It is described as the light gathering
ability of an optical fiber.

A. Normalized Frequency
B. Numerical Aperture
C. V Number
D. Acceptance Cone

A

B. Numerical Aperture

32
Q

When light travels from a denser to a
less dense material, the angle of
refraction is _____ the incidence angle.

A. greater than
B. greater than or equal
C. less than
D. less than or equal

A

A. greater than

33
Q

Which color bends the most?

A. Violet
B. Yellow
C. Red
D. Indigo

A

A. Violet

34
Q

A LASER class that is safe depending
on the usage:

A. Class Il
B. Class I
C. Class IIl
D. Class IV

A

C. Class IIl

35
Q

It is the result of photons of light that
are absorbed by the atoms of the glass
core molecules

A. Dispersion
B. Infrared absorption
C. Ultraviolet absorption
D. lon resonance absorption

A

B. Infrared absorption

36
Q

It is the range of wavelength values that
can be used for a given photodiode:

A. Spectral Response
B. Transit Time
C. Light Sensitivity
D. Responsivity

A

A. Spectral Response

37
Q

The difference between the absolute
delay times of the fastest and slowest rays of light propagating down the fiber of unit length is called

A. pulse width dispersion constant
B. pulse-spreading constant
C. modal dispersion constant
D. pulse stretching constant

A

B. pulse-spreading constant

38
Q

It is the minimum optical power a light detector can receive and still produce a usable electrical output signal.

A. light sensitivity
B. spectral response
C. dark current
D. transmit light

A

A. light sensitivity

39
Q

An optical fiber (or optical fibre) is a
flexible, transparent fiber made by
drawing glass (silica) or plastic to a
diameter slightly thicker than that of a
human hair. Optical fibers are used
most often as a means to transmit light
between the two ends of the fiber and
find wide usage in fiber-optic
communications, where they permit
transmission over longer distances and at higher bandwidths (data rates) than wire cables. Fibers are used instead of metal wires because signals travel
along them with lesser amounts of loss;
in addition, fibers are also immune to
electromagnetic interference, a problem
which metal wires suffer from
excessively. In terms of construction of
the main optical fiber, which of the
following combinations is impossible?

A. Plastic core and glass cladding
B. Plastic core and cladding
C. Glass core and cladding
D. Glass core and plastic cladding

A

A. Plastic core and glass cladding

40
Q

It is the minimum angle of incidence at which light ray may strike the interface of two media and result in an angle of refraction of 90°.

A. Any of these choices
B. Critical Angle
C. Cut-off Angle
D. Acceptance Angle

A

B. Critical Angle

41
Q

The refractive index at the core is
highest at the center and decreases
gradually with distance toward the outer
edge.

A. Step Index
B. Single Mode
C. Graded Index
D. Multi Mode

A

C. Graded Index

42
Q

A figure of merit used to measure the light gathering or light collection ability of the optical fiber

A. Critical angle
B. Acceptance cone
C. Acceptance angle
D. Numerical aperture

A

D. Numerical aperture

43
Q

LASER stands for:

A. Light Amplification by Simulated Emission
of Radiation
B. Light Amplification by Stimulated Emitted
Rays
C. Light Amplification by Simulated Emitted
Rays
D. Light Amplification by Stimulated
Emission of Radiation

A

D. Light Amplification by Stimulated
Emission of Radiation

44
Q

_____ dispersion is caused by the
difference in the propagation times of
light rays that take different paths down
a fiber.

A. Wavelength dispersion
B. Modal dispersion
C. Delay dispersion
D. Material dispersion

A

B. Modal dispersion

45
Q

The black fiber is designated as
number:

A. 8
B. 4
C. 6
D. 2

A

A. 8

46
Q

It is produced after rotating the
acceptance angle around the fiber axis.

A. Acceptance Cone
B. Numerical Cone
C. Aperture Cone
D. Apex Cone

A

A. Acceptance Cone

47
Q

It is the graphical representation of the value of the refractive index across the fiber.

A. Index Profile
B. Mode
C. Grade
D. Window

A

A. Index Profile

48
Q

Which of the following combinations is
impossible for optical fibers?

A. Glass core and plastic cladding
B. Glass core and cladding
C. Plastic core and cladding
D. Plastic core and glass cladding

A

D. Plastic core and glass cladding

49
Q

In fiber optics, SCS stands for

A. Silica-clad-silica
B. Silicon base-class-silica
C. Serial-clad-silicon
D. Suppressed-clad-silicon

A

A. Silica-clad-silica

50
Q

It is analogous to power dissipation in
copper cable.

A. any of these choices
B. Distortion
C. Attenuation
D. Absorption

A

D. Absorption

51
Q

A single-mode cable does not suffer
from:
1. modal dispersion
2. waveguide dispersion
3. chromatic dispersion

A. 1,2, and 3
B. 3 only
C. 2 and 3 only
D. 1 only

A

D. 1 only

52
Q

Which of the following can happen in
optical fibers?

A. injection loss
B. bending loss
C. junction loss
D. all of these choices

A

D. all of these choices

53
Q

Wavelength dispersion is same as
which of the following?

A. polarization injection
B. chromatic dispersion
C. chromatic injection
D. modal dispersion

A

B. chromatic dispersion

54
Q

A technology for carrying many signals
of different capacities through a
synchronous, flexible optical hierarchy.

A. SDH
B. SONET
C. PDH
D. ATM

A

B. SONET

55
Q

The letter of the loaded cable
designation 24B88 indicates

A. Wire gauge
B. Spacing
C. Attenuation
D. Coil inductance

A

B. Spacing

56
Q

In the telephone unit, what is produced when the balancing network in a hybrid circuit is intentionally unbalanced
slightly so that the small amount of
transmitted signal is fed to the receiver
of the talking phone?

A. Side tone
B. Echo
C. Dial tone
D. Singing

A

A. Side tone

57
Q

A jelly like substance that has an index of refraction much closer to the glass than air is called:

A. alignment gel
B. framing gel
C. Index matching gel
D. splice gel

A

C. Index matching gel

58
Q

In the telephone industry, BORSCHT
functions are performed by

A. Connector switch
B. Subscriber line interface
C. Crosspoint matrix
D. Switching network

A

B. Subscriber line interface

59
Q

Commonly used AWG in subscriber
loops:

A. 24
B. 22
C. 19
D. 26

A

C. 19

60
Q

A MSU type which has a typical transmit
power of 4 W:

A. Transportable
B. Portable
C. Mobile
D. All of these choices

A

C. Mobile

61
Q

The terms single mode and multimode
are best describes as

A. the number of wavelengths each fiber
can support
B. the number of fibers placed into a fiber-
optic cable
C. the number of voice channels each fiber
can support
D. the index number

A

A. the number of wavelengths each fiber
can support

62
Q

Dial tone uses:

A. 90 Vrms, 20 Hz
B. 350+440 Hz
C. 480+620 Hz
D. 440+480 Hz

A

B. 350+440 Hz

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