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75 MCQ [APPLICATION LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083 [
75 MCQ [APPLICATION LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083
1. Jagat Mandir Secondary School is introducing online
classes with live video lessons. The school needs the fastest and most reliable
broadband connection for smooth video conferencing. Which broadband technology
should the school choose?
A. DSL B. Dial-up C. Fiber-optic Broadband ✅ D.
Satellite Broadband
Explanation: Fiber-optic broadband provides the highest speed, high
bandwidth, and reliable performance for online classes and video conferencing.
2. A rural health post is located in a remote Himalayan
village where wired Internet services are unavailable. Which broadband
technology would be the most suitable for providing Internet access?
A. DSL B. Cable Broadband C. Fiber-optic Broadband D.
Satellite Broadband ✅
Explanation: Satellite broadband provides Internet connectivity in
remote areas where cable and telephone infrastructure are unavailable.
3. During an online examination, students experience slow
Internet even though the school has subscribed to a high-bandwidth connection.
Which factor best explains this situation?
A. High bandwidth always guarantees high throughput.
B. Actual throughput may be lower than bandwidth because of network congestion.
✅
C. Frequency automatically increases Internet speed.
D. Data packets are not required for communication.
Explanation: Bandwidth is the maximum capacity, whereas throughput is
the actual amount of data successfully transmitted, which may decrease due to
congestion.
4. A software company frequently transfers large design
files between its offices. To make the transfer more reliable, the files are
divided into many small units before transmission. What are these units called?
A. Frames B. Packets ✅ C. Sectors D. Clusters
Explanation: Large files are divided into packets so they can be
transmitted efficiently and reassembled at the destination.
5. A mobile network operator plans to support thousands
of smart traffic lights, surveillance cameras, and IoT sensors throughout
Kathmandu Valley. Which mobile network generation is most suitable for this
project?
A. 2G B. 3G C. 4G D. 5G ✅
Explanation: 5G is designed to support massive IoT connectivity with
high speed and very low latency.
6. A television station wants to broadcast live news
without delays or interruptions. Which network characteristic should receive
the highest priority?
A. Low bandwidth B. High latency C. High bandwidth ✅ D.
Low frequency
Explanation: High bandwidth allows a large amount of data to be
transmitted efficiently, supporting smooth live video broadcasting.
7. A company installs a faster Internet package, but
employees still complain that file downloads are slower than expected during
office hours. Which concept best explains this problem?
A. Frequency B. Throughput ✅ C. Broadband D. Modulation
Explanation: Heavy network usage can reduce the actual throughput, even
when the available bandwidth is high.
8. During a disaster, emergency rescue teams require
instant communication with very little delay while coordinating rescue
operations. Which mobile network generation would provide the best performance?
A. 2G B. 3G C. 4G D. 5G ✅
Explanation: 5G provides very low latency, enabling faster real-time
communication during emergency situations.
75 MCQ [KNOWLEDGE LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083 [
75 MCQ [KNOWLEDGE LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083 [ process of ________.
A. Storing data in a computer B. Sending and receiving
information over long distances ✅ C. Repairing network devices D.
Designing websites
Explanation: Telecommunication is the transmission of information over
long distances using electronic communication systems.
2. Which broadband technology uses existing telephone
lines to provide Internet access?
A. Cable Broadband B. DSL ✅ C. Fiber-optic Broadband D.
Satellite Broadband
Explanation: DSL (Digital Subscriber Line) provides Internet service
through telephone lines.
3. Frequency is measured in ________.
A. Bytes B. Hertz (Hz) ✅ C. Volts D. Watts
Explanation: Frequency is measured in Hertz (Hz), which indicates the
number of signal cycles per second.
4. Which mobile network generation first introduced video
calling and multimedia services?
A. 2G B. 3G ✅ C. 4G D. 5G
Explanation: 3G introduced video calling, mobile Internet, and
multimedia services.
5. Which mobile network generation provides the highest
speed and the lowest latency?
A. 2G B. 3G C. 4G D. 5G ✅
Explanation: 5G offers the fastest data speed, very low latency, and
supports advanced technologies like IoT and smart cities.
6. Broadband is best defined as a ________.
A. Network cable B. High-speed Internet connection ✅ C.
Computer software D. Mobile application
Explanation: Broadband is a high-speed Internet connection that allows
fast data transmission.
7. Which of the following is NOT a telecommunication
device?
A. Mobile phone B. Radio C. Television D. Scanner ✅
Reason: A scanner is an input device used to capture images or
documents, not a telecommunication device.
8. Which of the following is the smallest unit used to
measure frequency?
A. GHz B. MHz C. kHz D. Hz ✅
Reason: Hertz (Hz) is the basic unit of frequency, representing one
cycle per second.
9. What is the primary purpose of dividing data into
packets during transmission?
A. To increase monitor resolution B. To make data
transmission more efficient and reliable ✅ C. To reduce computer memory D.
To improve battery life
Reason: Data packets allow large files to be transmitted efficiently and
retransmitted if any packet is lost.
10. Which mobile network generation first introduced
high-definition (HD) video streaming?
A. 2G B. 3G C. 4G ✅ D. 5G
Reason: 4G provides the speed required for smooth HD video streaming and
faster mobile Internet.
11. Which mobile network generation is specially designed
to support the Internet of Things (IoT)?
A. 2G B. 3G C. 4G D. 5G ✅
Reason: 5G supports millions of connected smart devices with low latency
and high reliability.
12. Which of the following is an example of broadband
Internet?
A. Fiber-optic connection ✅ B. AM Radio C. Newspaper D.
Walkie-talkie
Reason: Fiber-optic broadband provides high-speed Internet using light
signals.
9. Communication media is also known as ________.
A. Network topology B. Transmission media ✅ C.
Network protocol D. Operating system
Reason: Communication media is called transmission media because it
carries data from one device to another.
10. Which type of communication media uses physical
cables to transmit data?
A. Guided media ✅ B. Unguided media C. Satellite
media D. Broadcast media
Reason: Guided media transmits data through physical cables such as
twisted pair and optical fiber.
11. Which of the following is an example of guided
communication media?
A. Wi-Fi B. Bluetooth C. CAT6 cable ✅ D.
Satellite
Reason: CAT6 cable is a wired transmission medium used in computer
networks.
12. Optical fiber transmits data using ________.
A. Electrical signals B. Radio waves C. Light signals ✅ D.
Sound waves
Reason: Optical fiber uses pulses of light to transmit data at very high
speed.
13. Which communication media uses electrical signals for
data transmission?
A. Optical fiber B. CAT6 cable ✅ C.
Infrared D. Satellite
Reason: CAT6 cable carries electrical signals through copper wires.
14. Which connector is commonly used with CAT6 Ethernet
cables?
A. SC B. LC C. RJ-45 ✅ D. ST
Reason: RJ-45 is the standard connector used with Ethernet cables such
as CAT5e and CAT6.
15. Which of the following is an example of unguided
communication media?
A. Optical fiber B. Coaxial cable C. Wi-Fi ✅ D.
CAT6 cable
Reason: Wi-Fi transmits data wirelessly through radio waves without
using physical cables.
16. Which wireless technology is mainly used to identify
and track objects using radio waves?
A. Bluetooth B. Wi-Fi C. RFID ✅ D. Infrared
Reason: RFID identifies and tracks tagged objects using radio frequency
signals.
17. What is the primary function of a connector in a
computer network?
A. To store data B. To connect communication media to
network devices ✅ C. To process data D. To
display information
Reason: Connectors provide the physical connection between communication
media and network devices.
18. Which connector is commonly used with Ethernet
cables?
A. USB B. HDMI C. RJ-45 ✅ D. VGA
Reason: RJ-45 is the standard connector used for Ethernet networking.
19. How many metal pins are present in an RJ-45
connector?
A. 4 B. 6 C. 8 ✅ D. 10
Reason: An RJ-45 connector contains eight metal pins for Ethernet
communication.
20. Which device converts electrical signals into light
signals and vice versa?
A. Hub B. Router C. Media Converter ✅ D.
Switch
Reason: A media converter connects copper and fiber optic networks by
converting electrical and light signals.
21. A media converter is mainly used to connect ________.
A. Two wireless networks B. Copper and fiber optic networks ✅ C.
Two Bluetooth devices D. Two printers
Reason: A media converter enables communication between copper cable
networks and fiber optic cable networks.
22. Which networking device regenerates weak signals to
extend the transmission distance?
A. Router B. Repeater ✅ C. Bridge D. Gateway
Reason: A repeater regenerates weak signals so they can travel longer
distances without significant loss.
23. Which networking device forwards data packets based
on IP addresses?
A. Hub B. Bridge C. Router ✅ D. Switch
Reason: A router forwards data between different networks using IP
addresses.
24. Which networking device broadcasts incoming data to
all connected devices?
A. Switch B. Bridge C. Hub ✅ D. Router
Reason: A hub sends incoming data to every connected device without
checking the destination.
25. Which networking device connects two similar computer
networks?
A. Gateway B. Bridge ✅ C. Repeater D. Modem
Reason: A bridge connects and manages communication between two similar
LAN segments.
26. Which networking device performs modulation and
demodulation of signals for Internet communication?
A. Switch B. Gateway C. Modem ✅ D. Bridge
Reason: A modem modulates and demodulates signals for data
communication.
27. Which network topology uses a single backbone cable
to connect all devices?
A. Star B. Ring C. Bus ✅ D. Hybrid
Reason: In a bus topology, all devices are connected to one main
communication cable called the backbone.
28. Which network topology uses a hub or switch as the
central connecting device?
A. Bus B. Star ✅ C. Ring D. Hybrid
Reason: In a star topology, every device is connected to a central hub
or switch.
29. Which network topology forms a closed loop?
A. Bus B. Star C. Ring ✅ D. Hybrid
Reason: In a ring topology, each device is connected to two neighboring
devices, forming a closed circle.
30. Which network topology is formed by combining two or
more different topologies?
A. Bus B. Star C. Ring D. Hybrid ✅
Reason: A hybrid topology combines two or more network topologies within
the same network.
31. Which device is commonly used as the central
connecting device in a star topology?
A. Repeater B. Hub/Switch ✅ C. Bridge D. Modem
Reason: A hub or switch serves as the central device that connects all
computers in a star topology.
32. Which type of network covers the smallest
geographical area?
A. LAN B. MAN C. PAN ✅ D. WAN
Reason: A Personal Area Network (PAN) connects devices within a very
short range around an individual.
33. Which type of network is commonly used in a school
computer laboratory?
A. PAN B. LAN ✅ C. MAN D. WAN
Reason: A Local Area Network (LAN) connects computers within a limited
area such as a school or office.
34. Which type of network covers a city or metropolitan
area?
A. PAN B. LAN C. MAN ✅ D. WAN
Reason: A Metropolitan Area Network (MAN) connects multiple LANs within
a city or metropolitan region.
35. Which type of network covers the largest geographical
area?
A. PAN B. LAN C. MAN D. WAN ✅
Reason: A Wide Area Network (WAN) connects computers over large
geographical areas, including countries and continents.
36. What is the full form of MAN?
A. Main Area Network B. Metropolitan Area Network ✅ C.
Multiple Access Network D. Multi Area Network
Reason: MAN stands for Metropolitan Area Network.
37. Network architecture refers to the ________.
A. Design and structure of a computer network ✅ B.
Speed of a network C. Type of Internet connection D. Number of computers
Reason: Network architecture defines how network devices are connected
and communicate with each other.
38. Which of the following is a type of network
architecture?
A. Star Topology B. Ring Topology C. Client-Server Network ✅ D.
WAN
Reason: Client-Server is a network architecture, whereas Star and Ring
are network topologies.
39. In a client-server network, resources and services
are provided by the ________.
A. Client B. Server ✅ C. Switch D. Router
Reason: The server provides shared resources and services to client
computers.
40. A computer that requests services from a server is
called a ________.
A. Gateway B. Client ✅ C. Hub D. Bridge
Reason: A client requests and uses services provided by a server.
41. In a peer-to-peer network, every computer is called a
________.
A. Server B. Client C. Peer ✅ D. Host
Reason: In a peer-to-peer network, every computer has equal status and
is called a peer.
42. Which operating system is specially designed for
managing servers?
A. Windows 11 B. Android C. Windows Server ✅ D.
Chrome OS
Reason: Windows Server is designed to manage users, resources, and
services in a client-server network.
43. Who is responsible for managing and maintaining a
client-server network?
A. Teacher B. Network Administrator ✅ C.
Student D. Customer
Reason: A network administrator manages the network, users, security,
and resources.
44. Which network architecture does NOT require a
dedicated server?
A. Client-Server B. Peer-to-Peer ✅ C.
Mainframe D. Cloud
Reason: Peer-to-peer networks allow computers to share resources without
a dedicated server.
45. Which network architecture is most suitable for a
small home network?
A. Client-Server B. Peer-to-Peer ✅ C.
MAN D. WAN
Reason: Peer-to-peer networks are simple, inexpensive, and suitable for
small networks.
46. Which network architecture is most suitable for large
organizations?
A. Peer-to-Peer B. Client-Server ✅ C.
PAN D. LAN
Reason: Client-server architecture provides centralized management,
better security, and efficient resource sharing.
47. What is the full form of IPv4?
A. Internet Provider Version 4 B. Internet Protocol Version
4 ✅ C. Internal Protocol Version 4 D. Internet Packet
Version 4
Reason: IPv4 stands for Internet Protocol Version 4.
48. Which version of the Internet Protocol uses a 128-bit
address?
A. IPv2 B. IPv3 C. IPv4 D. IPv6 ✅
Reason: IPv6 uses 128-bit addresses, providing a much larger address
space than IPv4.
49. IPv4 addresses are written in ________ notation.
A. Binary B. Decimal with dots ✅ C.
Hexadecimal D. Octal
Reason: IPv4 addresses use decimal numbers separated by dots (e.g.,
192.168.1.1).
50. Which symbol is used to separate groups in an IPv6
address?
A. Dot (.) B. Hyphen (-) C. Colon (:) ✅ D.
Slash (/)
Reason: IPv6 addresses are written in hexadecimal groups separated by
colons.
51. Approximately how many unique IP addresses can IPv4
generate?
A. 4.29 million B. 4.29 billion ✅ C.
4.29 trillion D. 3.4 × 10³⁸
Reason: IPv4 provides approximately 4.29 billion unique IP addresses.
52. Which version of the Internet Protocol was developed
to overcome IPv4 address exhaustion?
A. IPv3 B. IPv4 C. IPv5 D. IPv6 ✅
Reason: IPv6 was introduced to provide a much larger address space than
IPv4.
53. Which of the following is the largest computer
network in the world?
A. LAN B. MAN C. Internet ✅ D. Intranet
Reason: The Internet is the world's largest network, connecting millions
of devices globally.
54. Which network is designed for use only within an
organization?
A. Internet B. Intranet ✅ C. Extranet D. PAN
Reason: An intranet is a private network accessible only to authorized
members of an organization.
55. Which network allows selected external users to
access an organization's resources?
A. Internet B. Intranet C. Extranet ✅ D.
LAN
Reason: An extranet provides controlled access to authorized external
users such as suppliers and customers.
56. Which network is privately owned and maintained by an
organization?
A. Internet B. Intranet ✅ C. Extranet D. WAN
Reason: An intranet is a private network that is owned and used within
an organization.
57. Who can access the Internet?
A. Employees only B. Customers only C. Authorized staff only D.
Anyone with an Internet connection ✅
Reason: The Internet is a public network that can be accessed by anyone
with an Internet connection.
58. Communication mode refers to the ________.
A. Speed of data transmission B. Direction of data
transmission ✅ C. Size of a network D. Type of communication cable
Reason: Communication mode describes the direction in which data flows
between devices.
59. Which communication mode allows data to flow in only
one direction?
A. Half-duplex B. Full-duplex C. Simplex ✅ D.
Multiplex
Reason: In simplex mode, data flows only from the sender to the
receiver.
60. Which communication mode allows data to flow in both
directions, but only one direction at a time?
A. Simplex B. Half-duplex ✅ C. Full-duplex D. Broadcast
Reason: Half-duplex communication allows two-way communication, but not
simultaneously.
61. Which communication mode allows simultaneous two-way
communication?
A. Simplex B. Half-duplex C. Full-duplex ✅ D.
One-way
Reason: Full-duplex allows both devices to send and receive data at the
same time.
62. Which communication mode is commonly used in a mobile
phone conversation?
A. Simplex B. Half-duplex C. Full-duplex ✅ D.
Broadcast
Reason: Mobile phones allow both users to speak and listen
simultaneously.
63. Which command displays the IP address, subnet mask,
and default gateway of a computer?
A. ping B. ipconfig ✅ C. tracert D. nslookup
Reason: The ipconfig command displays the network configuration
of a computer.
64. Which command is used to test network connectivity
between two devices?
A. tracert B. nslookup C. ping ✅ D.
ipconfig
Reason: The ping command checks whether another device or host
can be reached over a network.
65. Which command displays the path (route) that data
packets travel to reach a destination?
A. ping B. ipconfig C. tracert ✅ D.
nslookup
Reason: The tracert command shows each router (hop) through which
data travels.
66. Which command is used to find the IP address
associated with a domain name?
A. ping B. tracert C. ipconfig D. nslookup ✅
Reason: The nslookup command retrieves the IP address of a domain
using the Domain Name System (DNS).
67. A network protocol is a set of rules that governs
________.
A. Computer storage B. Communication between devices on a
network ✅ C. Screen resolution D. Processor speed
Reason: A network protocol defines how devices communicate and exchange
data over a network.
68. Which protocol suite is the standard communication
protocol of the Internet?
A. FTP B. SMTP C. TCP/IP ✅ D. DHCP
Reason: TCP/IP is the standard protocol suite used for Internet
communication.
69. Which protocol automatically assigns IP addresses to
devices on a network?
A. HTTP B. FTP C. DHCP ✅ D. SMTP
Reason: DHCP automatically assigns IP addresses to network devices.
70. Which protocol is mainly used to transfer web pages
from a web server to a web browser?
A. FTP B. HTTP ✅ C. SMTP D. DHCP
Reason: HTTP is the standard protocol for transferring web pages.
71. Which protocol provides secure communication while
accessing websites?
A. HTTP B. HTTPS ✅ C. FTP D. SMTP
Reason: HTTPS encrypts communication between the browser and the web
server.
72. Which protocol is mainly used for sending e-mails?
A. FTP B. HTTP C. SMTP ✅ D. TCP/IP
Reason: SMTP is the standard protocol for sending e-mail messages.
73. Which protocol is mainly used to transfer files
between computers over a network?
A. FTP ✅ B. SMTP C. HTTP D. DHCP
Reason: FTP is designed for transferring files between computers.
74. Which protocol is mainly responsible for reliable
communication over the Internet?
A. Bluetooth B. TCP/IP ✅ C. FTP D. HTTP
Reason: TCP/IP manages reliable communication and data transmission
across networks.
75. Which protocol is mainly used to automatically assign
network configuration information to devices?
A. HTTP B. FTP C. SMTP D. DHCP ✅
Reason: DHCP automatically assigns IP addresses and other network
configuration settings to devices.
75 MCQ [UNDERSTANDING LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083 [
75 MCQ [UNDERSTANDING LEVEL] - Computer Network and Communication - SEE COMPUTER SCIENCE - CDC NEW CURRICULUM 2083 [
1. Why is fiber-optic broadband generally faster than
DSL?
A. It uses telephone lines. B. It uses light signals to
transmit data. ✅ C. It requires more electricity. D. It uses
satellite signals.
Explanation: Fiber-optic cables transmit data using light, allowing much
higher speed and bandwidth than DSL, which uses copper telephone lines.
2. What is the main purpose of bandwidth in a
communication network?
A. To measure the number of users B. To indicate the maximum
amount of data that can be transmitted ✅ C. To count data packets D. To
measure storage capacity
Explanation: Bandwidth represents the maximum data-carrying capacity of
a network, not the actual amount of data transmitted.
3. Which statement correctly explains throughput?
A. It is always equal to bandwidth.
B. It is the actual amount of data successfully transmitted. ✅
C. It is the total storage capacity of a network.
D. It measures the frequency of signals.
Explanation: Throughput is the actual rate of successful data transfer
and is usually lower than the available bandwidth.
4. Why is data divided into packets before transmission?
A. To increase the monitor size.
B. To make data transmission more efficient and reliable. ✅
C. To reduce processor speed.
D. To improve battery life.
Explanation: Dividing data into packets allows efficient transmission
and makes it easier to retransmit only the lost packets.
5. Why is frequency important in telecommunication?
A. It increases computer memory.
B. It determines how signals are transmitted and received. ✅
C. It changes the operating system.
D. It stores Internet data.
Explanation: Different communication technologies operate on different
frequency ranges to transmit signals efficiently.
6. Which statement correctly compares 4G and 5G mobile
networks?
A. 4G is faster than 5G.
B. 5G provides higher speed and lower latency than 4G. ✅
C. Both provide identical performance.
D. 5G only supports voice calls.
Explanation: Compared with 4G, 5G offers faster data transmission, lower
latency, and better support for smart devices.
7. Which statement best explains the difference between
bandwidth and throughput?
A. They always have the same value.
B. Bandwidth is the maximum capacity, whereas throughput is the actual data
transferred. ✅
C. Throughput is always greater than bandwidth.
D. Bandwidth measures storage space.
Explanation: Bandwidth shows the network's maximum capacity, while
throughput shows the actual data successfully transmitted.
8. Why does 5G support more smart devices than earlier
mobile generations?
A. It uses fewer frequencies.
B. It is designed to handle a much larger number of connected devices
simultaneously. ✅
C. It replaces the Internet.
D. It only supports mobile phones.
Explanation: 5G is designed for massive device connectivity, making it
suitable for the Internet of Things (IoT) and smart environments.
9. Why is optical fiber generally faster than copper
cable?
A. It uses electricity. B. It uses light signals. ✅ C.
It is thicker. D. It has more connectors.
Explanation: Optical fiber transmits data using light, allowing higher
speed and lower signal loss than copper cables.
10. Which statement correctly explains the advantage of
guided media over unguided media?
A. It is more affected by weather.
B. It provides a more stable and secure communication path. ✅
C. It does not require cables.
D. It only works indoors.
Explanation: Guided media uses physical cables, making communication
more stable, secure, and less affected by interference.
11. What is the main purpose of Bluetooth technology?
A. Long-distance communication
B. Connecting nearby devices wirelessly ✅
C. Broadcasting television signals
D. Connecting Internet satellites
Explanation: Bluetooth is designed for short-range wireless
communication between nearby devices.
12. Which feature makes RFID suitable for attendance
systems and inventory management?
A. It requires Internet access.
B. It identifies objects using radio waves. ✅
C. It transmits video signals.
D. It uses optical fiber cables.
Explanation: RFID identifies and tracks tagged objects using radio
frequency signals without direct contact.
13. Why is optical fiber preferred for long-distance
communication?
A. It is inexpensive.
B. It has low signal loss and high transmission speed. ✅
C. It uses electrical signals.
D. It requires no connectors.
Explanation: Optical fiber supports long-distance communication because
it offers high speed with minimal signal loss.
14. Which statement correctly compares guided and
unguided media?
A. Both require physical cables.
B. Guided media uses cables, whereas unguided media transmits signals through
the air. ✅
C. Unguided media is always more secure.
D. Guided media only uses radio waves.
Explanation: Guided media uses physical cables, while unguided media
transmits data wirelessly through electromagnetic waves.
15. Why is Wi-Fi considered an unguided communication
medium?
A. It uses telephone lines.
B. It transmits data through radio waves without physical cables. ✅
C. It requires fiber optic cables.
D. It only works with Ethernet connectors.
Explanation: Wi-Fi sends and receives data wirelessly using radio waves
rather than cables.
16. Which communication medium is generally more suitable
for environments with strong electromagnetic interference?
A. CAT6 cable
B. Optical fiber ✅
C. Coaxial cable
D. Twisted pair cable
Explanation: Optical fiber uses light instead of electrical signals,
making it immune to electromagnetic interference.
17. Why is the RJ-45 connector widely used in Local Area
Networks (LANs)?
A. It stores network data. B. It provides a reliable
connection for Ethernet communication. ✅ C. It converts electrical
signals into light. D. It broadcasts wireless signals.
Explanation: The RJ-45 connector provides a stable and reliable wired
connection for Ethernet networks.
18. Which statement correctly explains the function of a
media converter?
A. It increases Internet speed.
B. It connects copper and fiber optic networks by converting signals. ✅
C. It assigns IP addresses.
D. It connects wireless devices.
Explanation: A media converter converts electrical signals into light
signals and vice versa, allowing copper and fiber optic networks to
communicate.
19. Why are media converters commonly used in large
organizations and Internet Service Providers (ISPs)?
A. They replace routers.
B. They allow long-distance, high-speed communication using fiber optic cables.
✅
C. They increase computer memory.
D. They broadcast Wi-Fi signals.
Explanation: Media converters enable the use of fiber optic cables for
faster communication over longer distances.
20. Which statement correctly compares an RJ-45 connector
and a media converter?
A. Both convert electrical signals into light.
B. An RJ-45 connector connects Ethernet cables, whereas a media converter
connects different transmission media. ✅
C. Both are wireless networking devices.
D. Both are used only with optical fiber cables.
Explanation: RJ-45 is a connector for Ethernet cables, while a media
converter links copper and fiber optic networks.
21. Why is fiber optic communication preferred when using
a media converter?
A. It uses radio waves.
B. It provides higher speed and longer transmission distance with less signal
loss. ✅
C. It requires no connectors.
D. It only works inside buildings.
Explanation: Fiber optic communication offers high-speed data
transmission over long distances with minimal signal loss.
22. Why is a switch generally more efficient than a hub?
A. It has fewer ports. B. It sends data only to the intended
destination device. ✅ C. It uses radio waves. D. It
converts signals into light.
Explanation: A switch forwards data only to the intended device,
reducing unnecessary network traffic and improving efficiency.
23. Why is a repeater used in a computer network?
A. To assign IP addresses automatically. B. To strengthen
weak signals and extend the communication distance. ✅ C.
To connect different protocols. D. To store network data.
Explanation: A repeater regenerates weak signals so they can travel
longer distances without significant signal loss.
24. Which statement correctly explains the function of a
bridge?
A. It broadcasts data to all devices.
B. It connects similar network segments and filters traffic between them. ✅
C. It converts digital signals into analog signals.
D. It provides wireless Internet access.
Explanation: A bridge connects similar LAN segments and reduces
unnecessary network traffic by filtering data.
25. Why is a router essential in modern computer
networks?
A. It connects different networks and forwards data using IP
addresses. ✅
B. It stores user files permanently.
C. It increases monitor resolution.
D. It replaces Ethernet cables.
Explanation: A router enables communication between different networks
by forwarding data packets based on IP addresses.
26. Which statement correctly compares a hub and a
switch?
A. Both send data only to the destination device.
B. A hub broadcasts data to all devices, whereas a switch sends data only to
the intended device. ✅
C. A switch works only wirelessly.
D. A hub uses IP addresses to forward packets.
Explanation: A hub broadcasts data to every connected device, while a
switch intelligently forwards data only to the correct destination.
27. Why are terminators used in a bus topology?
A. To increase data transmission speed. B. To prevent signal
reflection at both ends of the cable. ✅ C. To connect additional
computers. D. To amplify network signals.
Explanation: Terminators absorb signals at both ends of the backbone
cable, preventing signal reflection and data transmission errors.
28. Why is a star topology generally more reliable than a
bus topology?
A. It requires less cable.
B. Failure of one computer usually does not affect the other computers. ✅
C. It does not use a central device.
D. It is the cheapest topology.
Explanation: In a star topology, each computer has an independent
connection to the central device, so failure of one computer does not interrupt
the rest of the network.
29. Which statement correctly explains the advantage of a
hybrid topology?
A. It uses only one type of topology.
B. It combines the strengths of two or more topologies to improve flexibility
and performance. ✅
C. It requires no networking devices.
D. It can connect only two computers.
Explanation: Hybrid topology combines different network topologies,
allowing organizations to benefit from the strengths of each.
30. Why is a ring topology often less popular than a star
topology?
A. It does not use cables.
B. A failure in one device or cable can interrupt the entire network. ✅
C. It requires no maintenance.
D. It is only used in wireless networks.
Explanation: Since devices are connected in a closed loop, a failure in
one part of the ring may disrupt communication throughout the network.
31. Which statement correctly compares bus and star
topologies?
A. Both use a central hub or switch.
B. Bus topology uses a single backbone cable, whereas star topology uses a
central connecting device. ✅
C. Both require terminators.
D. Star topology forms a closed loop.
Explanation: Bus topology connects all devices to one backbone cable,
while star topology connects each device to a central hub or switch.
32. Why is a Personal Area Network (PAN) suitable for
connecting personal devices?
A. It covers an entire country. B. It is designed for
short-range communication between an individual's devices. ✅ C.
It requires optical fiber. D. It connects multiple cities.
Explanation: A PAN connects devices within a short distance, making it
ideal for personal gadgets such as smartphones, laptops, and wireless
headphones.
33. Which statement correctly explains the advantage of a
Local Area Network (LAN)?
A. It connects computers across different countries.
B. It provides fast communication within a limited geographical area. ✅
C. It uses satellites for communication.
D. It covers an entire metropolitan city.
Explanation: A LAN offers high-speed communication within a small area
such as a school, office, or home.
34. Why is a Metropolitan Area Network (MAN) suitable for
connecting different offices within the same city?
A. It covers only one room.
B. It is designed to connect multiple LANs across a metropolitan area. ✅
C. It uses Bluetooth communication.
D. It replaces the Internet.
Explanation: A MAN connects multiple LANs within a city, making it
suitable for organizations with branches in the same metropolitan area.
35. Which statement correctly explains the purpose of a
Wide Area Network (WAN)?
A. It connects only personal devices.
B. It connects computers over large geographical areas such as countries or
continents. ✅
C. It connects computers within one classroom.
D. It is used only for Bluetooth communication.
Explanation: A WAN connects networks across long distances, enabling
communication between cities, countries, and continents.
36. Which statement correctly compares LAN and WAN?
A. Both cover the same geographical area.
B. LAN covers a small geographical area, whereas WAN connects networks over
much larger distances. ✅
C. WAN is always faster than LAN.
D. LAN uses only wireless communication.
Explanation: A LAN is limited to a small area, while a WAN connects
networks across much larger geographical regions.
37. Why is a client-server network generally more secure
than a peer-to-peer network?
A. It uses less cable.
B. It provides centralized control over users and resources. ✅
C. It does not require a server.
D. It allows every computer to manage the network.
Explanation: A client-server network provides centralized
administration, making it easier to control user access and protect shared
resources.
38. Why is centralized backup possible in a client-server
network?
A. Every client stores its own backup.
B. Data is managed and stored through the central server. ✅
C. Backup is not required.
D. Each peer stores the same data.
Explanation: A central server stores and manages data, making backup
easier and more reliable.
39. Why is a peer-to-peer network less expensive than a
client-server network?
A. It requires more servers.
B. It does not require a dedicated server. ✅
C. It uses optical fiber only.
D. It needs a network administrator.
Explanation: Since no dedicated server is required, installation and
maintenance costs are lower.
40. Which statement correctly explains the role of a
server in a client-server network?
A. It only receives data from clients.
B. It manages and provides shared resources and services to clients. ✅
C. It replaces routers and switches.
D. It connects different cities.
Explanation: The server centrally manages resources such as files,
printers, and user accounts.
41. Why is a network administrator important in a
client-server network?
A. To repair hardware daily.
B. To manage users, security, and shared resources. ✅
C. To create Internet connections.
D. To increase processor speed.
Explanation: A network administrator is responsible for maintaining the
network and ensuring secure access to resources.
42. Which statement correctly explains a peer in a
peer-to-peer network?
A. It can only receive resources.
B. It can both provide and use shared resources. ✅
C. It only acts as a server.
D. It cannot share files.
Explanation: Every peer has equal responsibilities and can both share
and access resources.
43. Why is a client-server network more suitable for
large organizations?
A. Every computer has equal responsibilities.
B. It provides centralized management, better security, and efficient resource
sharing. ✅
C. It does not require maintenance.
D. It eliminates the need for servers.
Explanation: Large organizations benefit from centralized control,
making network management more secure and efficient.
44. Which statement correctly compares client-server and
peer-to-peer networks?
A. Both require a dedicated server.
B. Client-server uses centralized management, whereas peer-to-peer gives equal
responsibility to all computers. ✅
C. Peer-to-peer provides better centralized security.
D. Both have identical network structures.
Explanation: Client-server relies on a central server, while
peer-to-peer allows all computers to function equally.
45. Why can each computer in a peer-to-peer network act
as both a client and a server?
A. Because there is no central server, and each computer can
both provide and use shared resources. ✅
B. Because every computer is connected to the Internet.
C. Because only one computer controls the network.
D. Because peer-to-peer networks use Windows Server.
Explanation: In a peer-to-peer network, every computer has equal
responsibilities and can both share and access resources.
46. Which statement best explains the main difference
between client-server and peer-to-peer networks?
A. Client-server uses centralized resource management,
whereas peer-to-peer distributes resource sharing among all computers. ✅
B. Both networks require dedicated servers.
C. Peer-to-peer uses routers only.
D. Client-server cannot share files.
Explanation: Client-server networks depend on centralized management,
whereas peer-to-peer networks share responsibilities equally among connected
computers.
47. Which statement correctly explains why IPv6 was
introduced?
A. To replace computer networks.
B. To provide a much larger address space than IPv4. ✅
C. To increase processor speed.
D. To replace Ethernet cables.
Explanation: IPv6 was developed to solve IPv4 address exhaustion by
providing a significantly larger number of unique IP addresses.
48. Why does every device connected to a network require
an IP address?
A. To increase Internet speed.
B. To identify the device and enable communication with other devices. ✅
C. To store files.
D. To improve screen resolution.
Explanation: An IP address uniquely identifies a device on a network so
that data can be delivered to the correct destination.
49. Which statement correctly compares IPv4 and IPv6
addressing?
A. Both use decimal numbers separated by dots.
B. IPv4 uses decimal notation, whereas IPv6 uses hexadecimal notation separated
by colons. ✅
C. IPv4 uses hexadecimal notation, whereas IPv6 uses decimal notation.
D. Both use 128-bit addresses.
Explanation: IPv4 uses decimal numbers separated by dots, while IPv6
uses hexadecimal groups separated by colons.
50. Why can IPv6 support future Internet growth better
than IPv4?
A. It requires fewer devices.
B. It provides a much larger address space. ✅
C. It uses shorter addresses.
D. It works only on wireless networks.
Explanation: IPv6 provides an enormous number of unique addresses,
making it suitable for the increasing number of Internet-connected devices.
51. Which statement correctly explains the purpose of an
IP address?
A. It stores webpages.
B. It identifies devices and helps route data across a network. ✅
C. It increases bandwidth.
D. It replaces MAC addresses.
Explanation: An IP address identifies a device and enables data packets
to reach the correct destination through the network.
52. Which statement correctly explains one advantage of
IPv6 over IPv4?
A. IPv6 provides a larger address space for future
expansion. ✅
B. IPv6 uses fewer bits than IPv4.
C. IPv6 uses decimal notation.
D. IPv6 supports fewer devices.
Explanation: IPv6 uses 128-bit addresses, providing a vastly larger
address space than IPv4.
53. Why is an intranet generally more secure than the
Internet?
A. It is slower than the Internet. B. Only authorized users
are allowed to access it. ✅ C. It does not use TCP/IP. D.
It works without servers.
Explanation: An intranet is a private network with restricted access,
making it more secure than the public Internet.
54. Which statement correctly explains the purpose of an
intranet?
A. It connects countries worldwide.
B. It improves communication and resource sharing within an organization. ✅
C. It provides free Internet access.
D. It replaces the World Wide Web.
Explanation: An intranet allows employees to communicate, share files,
and access organizational resources securely.
55. Which statement correctly explains the purpose of an
extranet?
A. It allows anyone to access company resources.
B. It provides controlled access to selected external users. ✅
C. It replaces the Internet completely.
D. It is used only inside a school.
Explanation: An extranet extends part of an organization's network to
trusted external users such as suppliers or business partners.
56. Which statement correctly compares the Internet and
an intranet?
A. Both are private networks.
B. The Internet is a public network, whereas an intranet is a private
organizational network. ✅
C. Both can be accessed only by employees.
D. An intranet covers the whole world.
Explanation: The Internet is publicly accessible, whereas an intranet is
restricted to authorized members of an organization.
57. Why do Internet, intranet, and extranet all use the
TCP/IP protocol suite?
A. Because TCP/IP provides a standard method for
communication between network devices. ✅
B. Because TCP/IP increases storage capacity.
C. Because TCP/IP replaces operating systems.
D. Because TCP/IP converts electrical signals into light.
Explanation: TCP/IP is the standard protocol suite that enables reliable
communication across different types of computer networks.
58. Why is simplex communication called one-way
communication?
A. Both devices send data simultaneously. B. Data flows only
from the sender to the receiver. ✅ C. Both devices receive data
only. D. Data flows through two cables.
Explanation: In simplex communication, data travels in only one
direction, so the receiver cannot send data back.
59. Which statement correctly explains half-duplex
communication?
A. Both devices transmit data simultaneously.
B. Both devices can communicate, but only one can transmit at a time. ✅
C. Data flows in only one direction.
D. It does not allow feedback.
Explanation: Half-duplex communication allows two-way communication, but
devices must take turns transmitting data.
60. Why is full-duplex communication more efficient than
half-duplex communication?
A. It uses fewer devices.
B. Both devices can send and receive data at the same time. ✅
C. It requires no communication channel.
D. It transmits only voice signals.
Explanation: Full-duplex communication eliminates waiting time by
allowing simultaneous transmission and reception of data.
61. Which statement correctly compares simplex and
full-duplex communication?
A. Both allow simultaneous two-way communication.
B. Simplex allows one-way communication, whereas full-duplex allows
simultaneous two-way communication. ✅
C. Both require users to take turns sending data.
D. Full-duplex allows only one-way communication.
Explanation: Simplex supports one-way communication only, whereas
full-duplex allows both devices to communicate simultaneously.
62. What is the main advantage of duplex communication
over simplex communication?
A. It increases computer storage.
B. It allows feedback between communicating devices. ✅
C. It eliminates the need for communication media.
D. It reduces the number of computers.
Explanation: Duplex communication enables two-way communication,
allowing the receiver to respond to the sender.
63. Which statement correctly explains the purpose of the
ping command?
A. It displays the computer's IP configuration.
B. It checks whether another device or host can be reached over a network. ✅
C. It traces the route taken by data packets.
D. It finds the IP address of a domain name.
Explanation: The ping command tests network connectivity by
sending packets to another device and checking for a response.
64. Why is the ipconfig command useful for network
troubleshooting?
A. It displays the route taken by data packets.
B. It shows the computer's network configuration, including the IP address and
default gateway. ✅
C. It tests Internet speed.
D. It sends e-mail messages.
Explanation: The ipconfig command helps identify network
configuration problems by displaying important network settings.
65. Which statement correctly explains the purpose of the
tracert command?
A. It automatically assigns IP addresses.
B. It displays the path that data packets follow to reach a destination. ✅
C. It encrypts Internet communication.
D. It transfers files between computers.
Explanation: The tracert command identifies each router (hop)
through which data passes before reaching its destination.
66. Why is the nslookup command useful in a computer
network?
A. It converts electrical signals into light.
B. It retrieves the IP address associated with a domain name. ✅
C. It measures network bandwidth.
D. It detects computer viruses.
Explanation: The nslookup command queries the Domain Name System
(DNS) to find the IP address of a domain.
67. Why are network protocols essential in computer
communication?
A. They increase computer memory. B. They provide a common
set of rules for communication between devices. ✅ C. They improve screen
resolution. D. They replace network cables.
Explanation: Network protocols define standard rules that allow
different devices to communicate and exchange data correctly.
68. Which statement correctly explains the purpose of the
TCP/IP protocol suite?
A. It transfers files only.
B. It enables reliable communication between devices over interconnected
networks. ✅
C. It is used only for sending e-mails.
D. It is used only for web browsing.
Explanation: TCP/IP provides the standard rules that allow devices on
different networks to communicate reliably over the Internet.
69. Why is DHCP useful in a computer network?
A. It automatically assigns IP addresses and network
settings to devices. ✅
B. It transfers files between computers.
C. It encrypts websites.
D. It sends e-mails.
Explanation: DHCP simplifies network management by automatically
providing IP addresses and other network configuration information.
70. Which statement correctly explains the purpose of
HTTP?
A. It transfers web pages from a web server to a web
browser. ✅
B. It automatically assigns IP addresses.
C. It sends e-mails.
D. It transfers files between computers.
Explanation: HTTP enables web browsers to request and receive web pages
from web servers.
71. Why is HTTPS preferred over HTTP for online
transactions?
A. It loads webpages faster.
B. It encrypts communication between the browser and the web server. ✅
C. It automatically assigns IP addresses.
D. It transfers files more efficiently.
Explanation: HTTPS encrypts transmitted data, protecting sensitive
information such as passwords and banking details.
72. Which statement correctly explains the purpose of
SMTP?
A. It sends e-mail messages from the sender to the mail
server. ✅
B. It transfers webpages.
C. It assigns IP addresses.
D. It traces network routes.
Explanation: SMTP is responsible for sending outgoing e-mail messages
across computer networks.
73. Why is FTP used instead of HTTP when transferring
large files?
A. FTP is designed specifically for file transfer between
computers. ✅
B. FTP assigns IP addresses automatically.
C. FTP encrypts all Internet traffic.
D. FTP manages wireless communication.
Explanation: FTP provides services specifically for uploading and
downloading files between computers over a network.
74. Which statement correctly compares HTTP and HTTPS?
A. Both provide the same level of security.
B. HTTPS encrypts data, whereas HTTP transmits data without encryption. ✅
C. HTTP is used only for e-mail communication.
D. HTTPS is used only for file transfer.
Explanation: HTTPS adds encryption to HTTP, making communication more
secure.
75. Why do devices on different networks communicate
successfully using TCP/IP?
A. Because TCP/IP provides standardized communication rules
understood by all compatible devices. ✅
B. Because TCP/IP increases Internet speed.
C. Because TCP/IP replaces routers.
D. Because TCP/IP stores webpages.
Explanation: TCP/IP establishes common communication standards, allowing
devices from different manufacturers and networks to exchange data reliably.
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