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Worksheets

Page 1

Total questions: 70

Worksheet time: 35mins

Name
Class
Date
1.

The full form of the term modem is

a)

Modulator Demodulator

b)

Module Demolition

c)

Modern Emulator

d)

Modular Demonstrator

2.

Which set correctly lists the three types of data communication based on direction?

a)

Simplex, Half Duplex, Full Duplex

b)

Serial, Parallel, Asynchronous

c)

TCP, UDP, ICMP

d)

Peer-to-Peer, Client-Server, Mesh

3.

The device used to connect two networks across different segments is called a

a)

Router

b)

Hub

c)

Switch

d)

Repeater

4.

Which statement best describes the difference between hardware and software?

a)

Hardware is the physical equipment; software is the set of programs that make hardware work

b)

Hardware is code stored in memory; software is the casing and ports

c)

Hardware and software are both tangible components of a computer

d)

Hardware refers only to input devices; software refers only to output devices

5.

A device that forwards data between computers within a single local network is called a

a)

Switch

b)

Router

c)

Firewall

d)

Modem

6.

The IP address 126.46.5.6 belongs to which address class?

a)

Class B

b)

Class A

c)

Class C

d)

Class D

7.

The design scheme for building a computer network is known as

a)

Topology

b)

Protocol

c)

Bandwidth

d)

Latency

8.

How many layers are in the OSI model?

a)

77

b)

55

c)

66

d)

44

9.

Select all hardware devices used to physically join network cables.

a)

Hub

b)

Switch

c)

Router

d)

Access Point

10.

Which group lists input devices?

a)

Keyboard, Mouse, Scanner, Microphone

b)

Monitor, Printer, Speaker, Projector

c)

CPU, RAM, SSD, GPU

d)

Switch, Router, Firewall, Repeater

11.

Define a computer network.

a)

A group of computers linked to share data and resources

b)

A single computer running multiple programs

c)

A device that stores power for computers

d)

The physical workspace where computers are placed

12.

Which type of network covers a single building or school?

a)

LAN

b)

MAN

c)

WAN

d)

PAN

13.

What is the largest network that spans the entire world?

a)

Internet

b)

Intranet

c)

Extranet

d)

LAN

14.

Which device connects a computer to a network?

a)

NIC

b)

UPS

c)

CPU

d)

HDMI adapter

15.

UTP cable is classified as which type of transmission media?

a)

Guided

b)

Unguided

c)

Radio frequency

d)

Satellite link

16.

Which network topology uses a hub or switch as the central connection point?

a)

Star

b)

Bus

c)

Ring

d)

Mesh

17.

Which protocol is used for sending email?

a)

SMTP

b)

FTP

c)

HTTP

d)

SNMP

18.

What is the primary function of DNS?

a)

Translate domain names or URLs into IP addresses

b)

Encrypt emails end-to-end

c)

Assign MAC addresses to devices

d)

Manage physical cabling layouts

19.

What is the first-octet range for Class C IPv4 addresses?

a)

192–223

b)

128–191

c)

224–239

d)

1–126

20.

Which device is used to share an internet connection with many users?

a)

Router

b)

Monitor

c)

Printer

d)

Keyboard

21.

The advantage of fiber optic compared to UTP is

a)

More resistant to interference and faster

b)

Cheaper and easier to crimp

c)

Uses only electrical signals

d)

Requires no shielding

22.

Wi‑Fi technology is categorized as

a)

Wireless network

b)

Wired LAN

c)

Powerline network

d)

Token Ring network

23.

The network security system that blocks illegal external access is called

a)

Firewall

b)

Router

c)

Proxy

d)

Switch

24.

The device used to strengthen a signal so the range is farther is

a)

Repeater

b)

Modem

c)

Hub

d)

Bridge

25.

A very short‑range personal network, such as between a phone and a laptop, is called

a)

PAN

b)

LAN

c)

MAN

d)

WAN

26.

The unique address assigned to each device on a network is called

a)

IP address

b)

SSID

c)

MAC vendor code

d)

Subnet mask

27.

The action of splitting a large network into smaller parts for efficiency is called

a)

Subnetting

b)

Multiplexing

c)

Tunneling

d)

Encapsulation

28.

HTTP is used to access

a)

Web pages/websites

b)

Email services

c)

File transfer (FTP) services

d)

DNS resolution services

29.

Data transfer speed is measured in units of

a)

Mbps

b)

Volts

c)

Kilograms

d)

Watts

30.

A VPN is used to create a network connection that is

a)

Secure/private

b)

Broadcast to all devices

c)

Lossy for data

d)

Unfiltered and open

31.

Explain the difference between LAN and WAN. Choose the correct statement about their coverage areas.

a)

LAN covers a small area like a building or school, while WAN spans very large areas such as countries or the world.

b)

LAN spans countries or the world, while WAN is limited to a single room.

c)

Both LAN and WAN only cover a single building.

d)

LAN and WAN are identical in geographic scope.

32.

Why is network security needed? Select all that apply.

a)

To prevent data theft.

b)

To block illegal access.

c)

To protect against malware.

d)

To maintain confidentiality and integrity of information.

e)

To guarantee faster internet speed regardless of network conditions.

33.

Which of the following are network devices? Select all that apply.

a)

Router

b)

Switch

c)

Modem

d)

Bridge

e)

Access point

34.

Which are typical weaknesses of wireless networks? Select all that apply.

a)

Prone to interference.

b)

Speeds can fluctuate.

c)

Requires physical cables for every device.

d)

Vulnerable to eavesdropping if security is weak.

e)

Immune to malware by design.

35.

Why is a switch more efficient than a hub? Choose the best explanation.

a)

A switch forwards frames only to the intended destination port, reducing unnecessary traffic and collisions.

b)

A switch broadcasts frames to all ports just like a hub.

c)

A switch uses coaxial cables so it is faster.

d)

A switch disables collision detection on the network.

36.

A computer is connected to Wi‑Fi but cannot access the internet. Other devices work normally. What is the most likely problem on that computer?

a)

Incorrect IP configuration or the adapter/DHCP did not obtain an address.

b)

The ISP is down.

c)

The router is powered off.

d)

The router’s DNS servers are failing, affecting all devices.

37.

A school network becomes slow when many students are streaming online. Which solutions are most appropriate? Select all that apply.

a)

Implement bandwidth management (traffic shaping or QoS).

b)

Upgrade the connection speed.

c)

Replace all switches with hubs.

d)

Change the Wi‑Fi SSID name.

38.

An office LAN is completely down. Router indicator lights are normal, but the switch lights are off. What is the most likely cause?

a)

The switch is faulty or not receiving power.

b)

Router misconfiguration.

c)

An ISP outage.

d)

Antivirus software blocking traffic.

39.

A user wants to securely access a file server from out of town. Which technology is most appropriate?

a)

VPN

b)

Unencrypted port forwarding

c)

Anonymous FTP

d)

Remote desktop without security controls

40.

An employee accessed Wi‑Fi without permission using a leaked password. What are the best actions to take? Select all that apply.

a)

Change the Wi‑Fi password.

b)

Implement WPA2/WPA3 encryption.

c)

Hide the SSID.

d)

Rely only on MAC address filtering.

41.

The purpose of the OSI is to help with what in data communication?

a)

Helping designers understand the functions of each layer related to data communication flow

b)

Providing hardware specifications for all network devices

c)

Encrypting all traffic across a network by default

d)

Assigning IP addresses to every host automatically

42.

Which of the following is used for data communication?

a)

Satellite

b)

Scanner

c)

Joystick

d)

Plotter

43.

Which OSI layer is used for the routing process?

a)

Physical layer

b)

Data Link layer

c)

Network layer

d)

Presentation layer

44.

The OSI standard for data communication was created by which organization?

a)

ISO

b)

IEEE

c)

IETF

d)

ITU

45.

The rules or standard that allow connection, communication, and data transfer between two or more computer points are called what?

a)

Protocol

b)

Topology

c)

Bandwidth

d)

Firmware

46.

Which device uses a full-duplex transmission system?

a)

Telephone

b)

Walkie-talkie

c)

Broadcast radio

d)

Loudspeaker

47.

The process of sending and receiving data between two devices connected in one network is the definition of what?

a)

Data communication

b)

Routing

c)

Modulation

d)

Virtualization

48.

Broadcast radio is included in which type of communication?

a)

Voice communication

b)

Video communication

c)

Image communication

d)

Text communication

49.

Which of the following is not included as a transmission system?

a)

Simplex

b)

Half-duplex

c)

Full-duplex

d)

Duplex

50.

Which of the following is a type of data in the form of video?

a)

CD or DVD

b)

Text

c)

Still image

d)

Audio

51.

What is the full form of LAN?

a)

Local Area Network

b)

Wide Area Network

c)

Local Access Node

d)

Logical Area Network

52.

The network topology shaped like a ring is called what?

a)

Star topology

b)

Bus topology

c)

Ring topology

d)

Mesh topology

53.

Which device functions to connect two different networks?

a)

Router

b)

Switch

c)

Hub

d)

Repeater

54.

The physical address on a network device is called what?

a)

IP address

b)

MAC address

c)

Subnet mask

d)

Gateway address

55.

How many bits are in IPv4?

a)

16 bits

b)

32 bits

c)

64 bits

d)

128 bits

56.

Which protocol is used to send email?

a)

HTTP

b)

FTP

c)

SMTP

d)

SNMP

57.

What is the full form of DHCP?

a)

Domain Host Control Protocol

b)

Dynamic Host Configuration Protocol

c)

Data Handling Control Protocol

d)

Distributed Host Communication Protocol

58.

Which device splits network signals across many ports?

a)

Router

b)

Switch

c)

Modem

d)

Bridge

59.

The device used to extend the coverage of a Wi‑Fi signal is called what?

a)

Access Point

b)

Router

c)

Repeater

d)

Modem

60.

Which command checks network connectivity using ICMP?

a)

ping

b)

tracert

c)

ipconfig

d)

nslookup

61.

Which protocol is used for file transfer on port 21?

a)

FTP

b)

HTTP

c)

SSH

d)

SMTP

62.

What is the address range used by APIPA (Automatic Private IP Addressing)?

a)

169.254.0.0/16

b)

192.168.0.0/16

c)

10.0.0.0/8

d)

172.16.0.0/12

63.

Which IP class has leading bits 110?

a)

Class A

b)

Class B

c)

Class C

d)

Class D

64.

What is the standard speed of Fast Ethernet?

a)

10 Mbps

b)

100 Mbps

c)

1 Gbps

d)

10 Gbps

65.

What is the standard speed of Fast Ethernet?

a)

10 Mbps

b)

100 Mbps

c)

1 Gbps

d)

10 Gbps

66.

What does QoS stand for?

a)

Quality of Service

b)

Queue of Signals

c)

Quantity of Storage

d)

Quantum of Security

67.

The IP address 192.168.1.1 belongs to which type?

a)

Private IP

b)

Public IP

c)

Loopback IP

d)

Multicast IP

68.

Which protocol is used to encrypt web communications?

a)

HTTP

b)

HTTPS

c)

FTP

d)

Telnet

69.

Which technology enables multiple VLANs on a single trunk port?

a)

IEEE 802.1Q

b)

IEEE 802.3

c)

STP

d)

OSPF

70.

Which protocol translates domain names to IP addresses?

a)

DHCP

b)

DNS

c)

SNMP

d)

NTP