Question for RRB ALP Electronics 2026 - Quiz / Questions / MCQ

Objective Questions

Latest RRB ALP Electronics Exam Question (Objective Questions), MCQ in English

Subjects : Mathematics, General Intelligence and Reasoning, Basic Science & Engineering, Electronics

Question Bank RRB ALP Electronics Exam CBT 2 Stage 2 - English

Mathematics

Question 1Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 2Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 3Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 4Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 5Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 6Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 7Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 8Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 9Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 10Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

Question 11Single Answer

Which is greater ?

A
15/16
B
17/18
C
Equal
D
Cannot compare

Question 12Single Answer

If sum of two numbers is 42 and their product is 437, then find their difference.

Question 13Single Answer

Write the 44000 in Roman numerals

A
XLI
B
XLVI
C
XLIV
D
XLVIC

Question 14Single Answer

Convert 0.0909… into fraction ?

A
1/11
B
9/11
C
1/9
D
9/10

Question 15Single Answer

What is (98 times 102) ?

A
9996
B
10000
C
10096
D
10196

Question 16Single Answer

Which is smaller ?

A
9/11
B
7/9
C
Equal
D
Cannot compare

Question 17Single Answer

Convert 0.5777… into fraction ?

A
26/45
B
52/90
C
13/22
D
5/9

Question 18Single Answer

Convert 0.81 into fraction ?

A
81/100
B
9/10
C
8/9
D
9/11

Question 19Single Answer

(63)² – (12)² =?

A
3528
B
3852
C
3582
D
3825

Question 20Single Answer

Which is greater ?

A
13/17
B
11/14
C
Equal
D
Cannot compare

Question 21Single Answer

Passage :

information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Chemistry but not in Physics.

A
318
B
198
C
213
D
206

Question 22Single Answer

Passage :

Direction: information given below and answer the question that follow.
The result of an exam is given below. Out of 1000 students who appeared
(i) 658 failed in Physics
(ii) 166 failed in Physics and Chemistry
(iii) 372 failed in Chemistry, 434 failed in Physics and Maths
(iv) 590 failed in Maths, 126 failed in Maths & Chemistry
Find the number of people who failed in (assuming that none is passed in all subjects.

We have the following equations:
a+ b + c + d + e + f + g = 1000
a + b + d + e = 658, b + d = 166
b + d + c + f = 372
d + e = 434 as in the figure.
d + e + f + g = 590, d + f = 126. Find the values

Physics or Maths but not in Chemistry.

A
558
B
718
C
628
D
None of these

Question 23Single Answer

Passage :

For the next four question that follow:
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

Let x% people read all the three newspapers.
Since 8% people do not read any newspapers.
(x – 24) + (x – 7) + (x + 4) + (30 – x) + (36 – x) + (28 – x) + x = 92
→ x + 98 – 31 = 92
→ x = 92 – 67 = 25

What is the percentage of persons who read all the three papers ?

A
20%
B
25%
C
30%
D
40%

Question 24Single Answer

Passage :

For the next four : question that follow :
In a city, three daily newspapers A, B, C are published, 42% read A; 51% read B; 68% read C; 30% read A and B; 28% read B and C; 36% read A and C; 8% do not read any of the three newspapers.

What is the percentage of persons who read only two papers?

A
19%
B
31%
C
44%
D
None of these

Question 25Single Answer

Passage :

What is the percentage of persons who read only one paper ?

A
38%
B
48%
C
51%
D
None of these

General Intelligence and Reasoning

Question 26Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 27Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 28Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 29Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 30Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 31Single Answer

How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?

A
None
B
One
C
Two
D
Three
E
More than three

Question 32Single Answer

If it is possible to make only one meaningful word with the first, the second, the seventh and the eighth letters of the word TEMPORAL, which of the following will be the first letter of that word? If more than one such word can be made, give ‘Y’ as the answer and if no such word can be made, give ‘X’ as the answer.

Question 33Single Answer

If the letters of the word HANDOVER are arranged alphabetically from left to right how many letters will remain at the same position?

A
None
B
One
C
Two
D
Three
E
More than three

Question 34Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 35Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 36Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 37Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 38Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

Question 39Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If in each of the given words, each of the consonant is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will no vowels appear?

A
None
B
One
C
Two
D
Three
E
More than three

Question 40Single Answer

Passage :

Direction : Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If the third alphabet in each of the words is changed to the next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed?

A
None
B
One
C
Two
D
Three
E
Four

Question 41Single Answer

Passage :

If the position of the first and the second alphabets of each of the words are interchanged, which of the following will form a meaningful English word?

A
Both CAT and OWN
B
Both BRU and INK
C
Only CAT
D
Only INK
E
Only LEG

Question 42Single Answer

Passage :

Direction: Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be exactly in the middle of the five words?

A
OWN
B
LEG
C
BRU
D
CAT
E
INK

Question 43Single Answer

Passage :

Direction: Following question is based on five words given below:
BRU LEGINKCATOWN
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words)

If in each of the given words, each of the consonants is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will the same alphabet appear twice?

A
None
B
One
C
Two
D
Three
E
More than three

Question 44Single Answer

Passage :

Find the missing number in the following series ?

3, 5, 5, 19, 7, 41, 9, ?

A
71
B
61
C
79
D
69

Question 45Single Answer

Passage :

Direction: following question is based on five words given below:
LAP BUT CAR SON HID
(The new words formed after performing the mentioned operations may or may not necessarily be meaningful English words.)

If the positions of the first and the third alphabets of each of the words are interchanged, which of the following would form meaningful words with the new arrangement?

A
HID
B
SON
C
Both LAP and BUT
D
CAR
E
Both CAR and LAP

Question 46Single Answer

Passage :

Direction : Each of the questions below consists of a question and two statements numbered (I) and (II) given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer :

How many employees of bank ‘X’ opted for VRS ?
(I) 18% of the 950 officer cadre employees and 6% of the 1100 of all other cadre employees opted for VRS.
(II) 28% of the employees in the age group of 51 to 56 and 17% of the employees in all other age groups opted for VRS.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 47Single Answer

Passage :

The area of a playground is 1600 square meters. What is its perimeter ?
(I) It is a perfect square playground
(II) It costs Rs.3200 to put a fence around the playground at the rate of Rs.20 per meter.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 48Single Answer

Passage :

What is the value of m – n ÷ 37 ?
(I) m is the largest possible six-digit number and n is the smallest possible six-digit number.
(II) The difference between m and n is known.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 49Single Answer

Passage :

What is the value of x ?
(I) If 10 is added to x, the result is 34.
(II) If x is multiplied by y, the result is 38.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 50Single Answer

Passage :

What was the total compound interest on a sum after three years ?
(I) The interest after one year was Rs. 100 and the sum after was Rs.1000.
(II) The difference between simple and compound interest on a sum of Rs.1000 at the end of two years was Rs.10.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

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Basic Science & Engineering

Question 51Single Answer

Which type of projection represents a 3D object on a 2D plane using multiple views?

A
Isometric projection
B
Orthographic projection
C
Perspective projection
D
Axonometric projection

Question 52Single Answer

In which projection are the three axes inclined at equal angles of 120°?

A
Orthographic projection
B
Isometric projection
C
Perspective projection
D
Oblique projection

Question 53Single Answer

Which projection is commonly used in architectural drawings to show depth and realism?

A
Orthographic projection
B
Isometric projection
C
Perspective projection
D
Sectional projection

Question 54Single Answer

What is the key characteristic of an orthographic projection?

A
It shows a 3D object in a single view
B
It requires multiple views to represent an object
C
It distorts proportions
D
It is only used for artistic drawings

Question 55Single Answer

In an isometric projection, how are the three principal axes oriented?

A
Perpendicular to each other
B
At 30° to the horizontal
C
At 45° to the vertical
D
Parallel to each other

Question 56Single Answer

The top view of an object is projected onto which plane?

A
Horizontal plane
B
Vertical plane
C
Profile plane
D
Perspective plane

Question 57Single Answer

The side view of an object is projected onto which plane?

A
Horizontal plane
B
Vertical plane
C
Profile plane
D
Isometric plane

Question 58Single Answer

Sectional views are used to:

A
Show the hidden details of an object
B
Reduce the complexity of a drawing
C
Remove unnecessary dimensions
D
Create artistic representations

Question 59Single Answer

The front view of an object is projected onto which plane?

A
Horizontal plane
B
Vertical plane
C
Profile plane
D
Oblique plane

Question 60Single Answer

Which type of sectional view is used to cut an object completely in half?

A
Half section
B
Full section
C
Partial section
D
Offset section

Question 61Single Answer

Which instrument is commonly used to draw horizontal parallel lines on a drawing board?

A
T-square
B
Divider
C
Compass
D
Protractor

Question 62Single Answer

Which instrument is used to draw circles and arcs?

A
Divider
B
Compass
C
Scale
D
Set square

Question 63Single Answer

A divider is mainly used for:

A
Drawing circles
B
Measuring angles
C
Transferring distances
D
Drawing horizontal lines

Question 64Single Answer

Which instrument is used to measure or construct angles?

A
T-square
B
Divider
C
French curve
D
Protractor

Question 65Single Answer

Which set square is normally used for drawing 45° lines?

A
30°–60° set square
B
45° set square
C
15° set square
D
75° set square

Question 66Single Answer

The standard angles of a 30°–60° set square are:

A
30°, 60°, 90°
B
30°, 45°, 90°
C
45°, 60°, 90°
D
15°, 75°, 90°

Question 67Single Answer

In engineering drawing, visible outlines are normally represented by:

A
Thin continuous lines
B
Dashed lines
C
Thick continuous lines
D
Chain lines

Question 68Single Answer

Hidden edges in an engineering drawing are represented by:

A
Dashed lines
B
Continuous thick lines
C
Chain lines
D
Freehand lines

Question 69Single Answer

A centre line is generally represented by:

A
Thick continuous line
B
Thin chain line
C
Thick dashed line
D
Zigzag line

Question 70Single Answer

Dimension lines are normally drawn as:

A
Freehand lines
B
Thick continuous lines
C
Thick chain lines
D
Thin continuous lines

Question 71Single Answer

In orthographic projection, the view seen from above is called the:

A
Front view
B
Side view
C
Top view
D
Auxiliary view

Question 72Single Answer

The view obtained by looking directly at the front of an object is called the:

A
Plan
B
Side elevation
C
Front elevation
D
Sectional view

Question 73Single Answer

In engineering drawing, the top view is also known as the:

A
Elevation
B
Plan
C
Profile
D
Perspective

Question 74Single Answer

Orthographic projection generally represents an object using:

A
Artistic sketches
B
Only perspective views
C
Photographic images
D
Two-dimensional views

Question 75Single Answer

Which projection gives a pictorial representation of an object with three dimensions visible?

A
Isometric projection
B
Orthographic projection
C
First-angle projection
D
Sectional projection

Question 76Single Answer

The angle between any two isometric axes is:

A
120°
B
90°
C
60°
D
180°

Question 77Single Answer

A circle drawn in isometric projection generally appears as a/an:

A
Circle
B
Ellipse
C
Square
D
Triangle

Question 78Single Answer

A polygon having three sides is called a:

A
Pentagon
B
Hexagon
C
Quadrilateral
D
Triangle

Question 79Single Answer

A polygon having five sides is called a:

A
Octagon
B
Hexagon
C
Heptagon
D
Pentagon

Question 80Single Answer

A regular hexagon has:

A
4 sides
B
5 sides
C
6 sides
D
8 sides

Question 81Single Answer

What is the SI unit of length?

A
Centimetre
B
Foot
C
Metre
D
Inch

Question 82Single Answer

What is the SI unit of mass?

A
Gram
B
Kilogram
C
Pound
D
Tonne

Question 83Single Answer

What is the SI unit of time?

A
Second
B
Hour
C
Minute
D
Day

Question 84Single Answer

The SI unit of force is:

A
Newton
B
Joule
C
Watt
D
Pascal

Question 85Single Answer

The SI unit of work is:

A
Watt
B
Joule
C
Newton
D
Ampere

Question 86Single Answer

The SI unit of power is:

A
Watt
B
Joule
C
Volt
D
Newton

Question 87Single Answer

The SI unit of pressure is:

A
Watt
B
Pascal
C
Joule
D
Ohm

Question 88Single Answer

The SI unit of electric current is:

A
Volt
B
Watt
C
Ohm
D
Ampere

Question 89Single Answer

The SI unit of electric potential difference is:

A
Ampere
B
Coulomb
C
Volt
D
Watt

Question 90Single Answer

One kilometre is equal to:

A
10 m
B
100 m
C
10,000 m
D
1000 m

Question 91Single Answer

One metre is equal to:

A
10 cm
B
1000 cm
C
100 cm
D
10,000 cm

Question 92Single Answer

One centimetre is equal to:

A
1 mm
B
10 mm
C
100 mm
D
1000 mm

Question 93Single Answer

The prefix "kilo" represents:

A
10
B
100
C
1000
D
10,000

Question 94Single Answer

The prefix "milli" represents:

A
10⁻³
B
10⁻²
C
10⁻¹
D
10⁻⁶

Question 95Single Answer

The prefix "micro" represents:

A
10⁻⁶
B
10⁻³
C
10⁻⁹
D
10⁻¹²

Question 96Single Answer

Which instrument is commonly used to measure the outside diameter of a shaft accurately?

A
Steel rule
B
Outside micrometer
C
Protractor
D
Try square

Question 97Single Answer

A vernier caliper can measure:

A
External, internal and depth dimensions
B
Only internal dimensions
C
Only external dimensions
D
Only angular dimensions

Question 98Single Answer

Which instrument is commonly used for checking a right angle?

A
Try square
B
Divider
C
Compass
D
Vernier caliper

Question 99Single Answer

A feeler gauge is used for measuring:

A
Large distances
B
Small gaps or clearances
C
Temperature
D
Electrical resistance

Question 100Single Answer

Which instrument is used to measure the pitch of screw threads?

A
Feeler gauge
B
Wire gauge
C
Radius gauge
D
Screw pitch gauge

Electronics

Question 101Single Answer

Which network usually connects computers within one office building?

A
MAN
B
LAN
C
WAN
D
PAN

Question 102Single Answer

A company connects its offices in several countries. Which network category best describes this connection?

A
MAN
B
PAN
C
LAN
D
WAN

Question 103Single Answer

Which network category commonly covers a city?

A
PAN
B
LAN
C
WAN
D
MAN

Question 104Single Answer

A phone communicates with a nearby wireless headset. This is an example of which network?

A
MAN
B
PAN
C
WAN
D
LAN

Question 105Single Answer

In which topology does each workstation connect to a central switch?

A
Bus
B
Full mesh
C
Ring
D
Star

Question 106Single Answer

Which topology uses a shared backbone cable to connect its nodes?

A
Ring
B
Star
C
Full mesh
D
Bus

Question 107Single Answer

In a simple ring topology with at least five nodes, each node has direct links to how many neighbouring nodes?

A
Three
B
One
C
Every other node
D
Two

Question 108Single Answer

Which topology provides a direct link between every pair of nodes?

A
Star
B
Bus
C
Simple ring
D
Full mesh

Question 109Single Answer

In a star network without redundancy, failure of the central switch typically affects which devices?

A
Only the first connected device
B
All devices dependent on that switch
C
Only wireless devices
D
Only the device with the highest IP address

Question 110Single Answer

Five nodes form a full mesh with one link per node pair. How many links are required?

A
20
B
5
C
15
D
10

Question 111Single Answer

A basic Ethernet switch forwards frames primarily using which address?

A
Source IP address
B
Destination DNS name
C
Destination MAC address
D
Destination TCP port number

Question 112Single Answer

Which device normally forwards IP packets between different networks?

A
Passive hub
B
Router
C
Patch panel
D
Unmanaged Layer 2 switch

Question 113Single Answer

How does a traditional Ethernet hub handle an incoming signal?

A
Forwards it selectively using a learned MAC table
B
Repeats it to the other ports
C
Stores it until the destination requests the frame
D
Routes it according to the destination IP address

Question 114Single Answer

What is the main purpose of a wireless access point?

A
Route packets between autonomous systems
B
Connect wireless clients to a network
C
Regenerate only optical signals between fibre segments
D
Convert telephone-line carrier signals to serial data

Question 115Single Answer

Which device restores a weakened digital signal along a communication path?

A
Passive splitter
B
Repeater
C
Attenuator
D
Terminating resistor

Question 116Single Answer

What is the basic purpose of a modem?

A
Forward frames according to a MAC address table
B
Assign IP addresses automatically to clients
C
Translate application messages between different protocols
D
Modulate and demodulate communication signals

Question 117Single Answer

A bridge traditionally connects network segments at which OSI layer?

A
Data link
B
Transport
C
Presentation
D
Application

Question 118Single Answer

What does a protocol-converting gateway enable?

A
Communication between systems using different protocols
B
Communication only between devices using an identical protocol
C
Passive termination of a cable without interpreting messages
D
Regeneration of bits without changing any protocol format

Question 119Single Answer

Which connector is commonly fitted to copper twisted-pair Ethernet patch cables?

A
8P8C, commonly called RJ45
B
BNC
C
DB25
D
SC optical connector

Question 120Single Answer

Which cable has a centre conductor surrounded by insulation and a conducting shield?

A
Unshielded twisted pair
B
Ribbon cable
C
Coaxial cable
D
Optical fibre

Question 121Single Answer

Which transmission medium is intrinsically immune to electromagnetic pickup along its signal path?

A
Optical fibre
B
Open-wire line
C
Unshielded copper pair
D
Parallel copper cable

Question 122Single Answer

Why are the two conductors of a data pair twisted together?

A
To make each conductor act as a separate shield
B
To provide impedance matching without any termination
C
To convert differential signalling into single-ended signalling
D
To reduce interference and crosstalk

Question 123Single Answer

What does the shield in a shielded data cable mainly help reduce?

A
Protocol overhead
B
IP fragmentation
C
Electromagnetic interference
D
Address-table size

Question 124Single Answer

What does cable attenuation describe?

A
Increase in signal travel time alone
B
Translation of the carrier to a new centre frequency
C
Change of phase with no change in signal strength
D
Reduction of signal strength with transmission

Question 125Single Answer

Network throughput is normally expressed as which quantity?

A
The fraction of corrupted bits in a received stream
B
The end-to-end transit time of one packet
C
The number of signal transitions per second only
D
Useful data delivered per second

Question 126Single Answer

Which term describes the time taken for a packet to travel between two points?

A
Latency
B
Frame length
C
Throughput
D
Address space

Question 127Single Answer

Variation in packet delay is called what?

A
Jitter
B
Attenuation
C
Routing
D
Duplexing

Question 128Single Answer

Which mode allows both ends to transmit simultaneously?

A
Time-division duplex with alternating directions
B
Full duplex
C
Half duplex
D
Simplex

Question 129Single Answer

A walkie-talkie link that permits either user to speak, but not simultaneously, operates in which mode?

A
Half duplex
B
Full duplex
C
Simplex
D
Frequency-division duplex with simultaneous directions

Question 130Single Answer

A one-way telemetry link without a return channel is an example of which mode?

A
Half duplex
B
Simplex
C
Time-division duplex with alternating directions
D
Full duplex

Question 131Single Answer

What is a network protocol?

A
A physical arrangement of network nodes
B
An agreed set of communication rules
C
A standardised connector pin arrangement only
D
An identifier assigned to one interface

Question 132Single Answer

How many layers are in the OSI reference model?

A
Eight
B
Five
C
Seven
D
Four

Question 133Single Answer

Which OSI layer specifies electrical or optical signalling on the medium?

A
Transport
B
Session
C
Application
D
Physical

Question 134Single Answer

Ethernet frame formatting is mainly associated with which OSI layer?

A
Application
B
Session
C
Data link
D
Presentation

Question 135Single Answer

Logical addressing and routing primarily belong to which OSI layer?

A
Network
B
Session
C
Physical
D
Presentation

Question 136Single Answer

Which OSI layer provides end-to-end transport services such as TCP?

A
Data link
B
Transport
C
Physical
D
Presentation

Question 137Single Answer

Which protocol provides reliable, ordered delivery of a byte stream?

A
UDP
B
ARP
C
ICMP
D
TCP

Question 138Single Answer

Which transport protocol sends datagrams without built-in delivery acknowledgements?

A
SSH
B
UDP
C
TCP
D
FTP

Question 139Single Answer

Which protocol is commonly used to retrieve web pages?

A
ARP
B
SNMP
C
HTTP
D
SMTP

Question 140Single Answer

HTTPS adds which major protection to ordinary web communication?

A
Encryption and server authentication through TLS
B
Automatic allocation of IP addresses to clients
C
Automatic compression of every web response
D
Guaranteed delivery without any transport protocol

Question 141Single Answer

Which service translates a domain name into an IP address?

A
DNS
B
NTP
C
DHCP
D
FTP

Question 142Single Answer

Which service can automatically assign IP configuration to a client?

A
DHCP
B
SMTP
C
ARP
D
DNS

Question 143Single Answer

Which protocol is specifically associated with transferring files?

A
NTP
B
ICMP
C
FTP
D
ARP

Question 144Single Answer

Which protocol is commonly used to send email between mail servers?

A
SNMP
B
FTP
C
SMTP
D
DHCP

Question 145Single Answer

Which protocol is widely used to monitor managed network devices?

A
POP3
B
SMTP
C
ARP
D
SNMP

Question 146Single Answer

The ping utility commonly uses which protocol?

A
ICMP
B
FTP
C
HTTP
D
SMTP

Question 147Single Answer

Which utility helps identify intermediate router hops to a destination?

A
Traceroute
B
ARP table display
C
Ping
D
Local interface-configuration display

Question 148Single Answer

On an IPv4 Ethernet LAN, ARP normally resolves an IPv4 address to what?

A
A MAC address
B
A routing prefix length
C
A subnet mask
D
A TCP port number

Question 149Single Answer

How many bits are in an IPv4 address?

A
48
B
32
C
128
D
16

Question 150Single Answer

How many bits are in an IPv6 address?

A
128
B
48
C
64
D
32

Question 151Single Answer

A conventional Ethernet MAC address contains how many bits?

A
128
B
48
C
16
D
32

Question 152Single Answer

What does a subnet mask identify in an IPv4 address?

A
Encryption key and authentication tag
B
Transport header and payload portions
C
Network and host portions
D
Source and destination port numbers

Question 153Single Answer

Which dotted-decimal mask corresponds to an IPv4 /24 prefix?

A
255.255.255.252
B
255.255.0.0
C
255.255.255.0
D
255.0.0.0

Question 154Single Answer

How many conventional usable host addresses are in an IPv4 /26 subnet?

A
62
B
126
C
64
D
30

Question 155Single Answer

What is the network address of 192.168.10.77/24?

A
192.168.10.0
B
192.168.10.77
C
192.168.10.255
D
192.168.0.77

Question 156Single Answer

What is the broadcast address of 192.168.5.0/24?

A
192.168.5.1
B
192.168.5.255
C
192.168.0.255
D
192.168.5.0

Question 157Single Answer

Which IPv4 address is in a private address range?

A
8.8.8.8
B
1.1.1.1
C
203.0.113.20
D
192.168.1.20

Question 158Single Answer

Which IPv4 address is commonly used to test the local loopback interface?

A
255.255.255.255
B
127.0.0.1
C
0.0.0.0
D
192.0.2.1

Question 159Single Answer

What is the role of a host's default gateway?

A
Forward traffic to destinations outside the local subnet
B
Translate every domain name into an IP address
C
Synchronise the host clock with a time reference
D
Assign a TCP port to every local application

Question 160Single Answer

Two active devices accidentally use the same IPv4 address on one LAN. What is the likely result?

A
Guaranteed load sharing
B
Automatic doubling of throughput
C
An address conflict
D
A larger subnet mask

Question 161Single Answer

Which IP configuration is deliberately entered and kept fixed by an administrator?

A
Autoconfiguration based only on received router advertisements
B
Static configuration
C
DHCP-only leased configuration
D
Automatically selected link-local configuration

Question 162Single Answer

On a switched full-duplex Ethernet link, which statement is correct?

A
Every frame must collide once
B
Only one direction can operate
C
CSMA/CD waits for a token
D
Collisions are not part of normal operation

Question 163Single Answer

What is a VLAN mainly used to create?

A
Separate logical broadcast domains
B
An address space with no broadcast traffic of any kind
C
One collision domain shared by every switch port
D
Separate physical conductors within one cable

Question 164Single Answer

What problem does the Spanning Tree Protocol mainly prevent?

A
Incorrect DNS name records
B
Duplicate IPv4 address assignments
C
Layer 2 forwarding loops
D
Application-level checksum errors

Question 165Single Answer

How does an Ethernet switch normally learn which port reaches a device?

A
By examining only destination MAC addresses
B
By storing only packet sequence numbers
C
By using only source TCP port numbers
D
By examining source MAC addresses of received frames

Question 166Single Answer

What does a basic switch normally do with an unknown unicast frame?

A
Flood it within the VLAN except on the incoming port
B
Convert it into a broadcast address-resolution request
C
Discard every unknown unicast frame unconditionally
D
Route it using the destination IP address instead

Question 167Single Answer

A frame addressed to exactly one receiver is called what?

A
Multicast
B
Broadcast
C
Flooding to every port
D
Unicast

Question 168Single Answer

Which delivery method targets all devices in a local broadcast domain?

A
Unicast
B
Multicast to a selected group
C
Broadcast
D
Anycast to one selected destination

Question 169Single Answer

Which delivery method targets a subscribed group of receivers?

A
Unicast
B
Broadcast
C
Anycast
D
Multicast

Question 170Single Answer

The Ethernet frame check sequence is primarily used for what?

A
Detecting corrupted frames
B
Correcting every possible bit error
C
Assigning IP addresses
D
Encrypting payloads

Question 171Single Answer

In an automatic repeat-request (ARQ) link, which mechanism recovers a damaged or lost frame?

A
Increasing the receiver noise bandwidth
B
Removing every frame header
C
Assigning the frame a new source address
D
Retransmission

Question 172Single Answer

What is the primary purpose of a network firewall?

A
Control traffic according to security rules
B
Translate every domain name into an address
C
Assign all client addresses automatically
D
Synchronise clocks across the network

Question 173Single Answer

Which measure protects the confidentiality of data sent over an untrusted network?

A
An unkeyed checksum
B
A cyclic redundancy check alone
C
Encryption
D
A parity bit on every character

Question 174Single Answer

What does authentication establish?

A
The identity claimed by a user or device
B
Whether a packet has a valid checksum
C
The round-trip delay to a server
D
Which cable pair carries the signal

Question 175Single Answer

What is the main purpose of an encrypted remote-access VPN tunnel?

A
Create a protected logical connection over another network
B
Replace the physical link with a dedicated copper conductor
C
Automatically translate every domain name into an address
D
Remove the need for network-layer addressing

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