NEW
Font size
WorksheetsIntroduction to Computer Networks
Total questions: 36
Worksheet time: 18mins
Which statement best defines a computer network?
A cable that powers computers without data transfer
Two or more devices connected to share resources
A single device running multiple applications alone
Two nearby computers with no communication possible
Which is the MAIN reason devices are connected in a network?
To share information and resources efficiently
To remove the need for any Internet service
To increase device weight and size significantly
To reduce the number of users in classrooms
Which example describes a LAN in everyday life?
Computers in a school lab connected to printers
Multiple cities linked by a fiber backbone
Phones connected to a national cellular provider
Airplanes exchanging data across continents
Which network type typically covers a city or large campus, about 5–50 km?
LAN, Local Area Network
WAN, Wide Area Network
MAN, Metropolitan Area Network
PAN, Personal Area Network
Which network type best matches the Internet as a whole?
MAN, covering a small neighborhood
WAN, covering regions and countries
LAN, covering a room or classroom
PAN, covering a person’s immediate area
A Bluetooth link between headphones and a smartphone is best classified as which network type?
WAN, worldwide interconnected network
LAN, a room or building network
MAN, a citywide fiber network
PAN, very short range personal network
Which scenario best fits a MAN rather than a LAN or WAN?
A town hall fiber network linking city offices
A single home Wi‑Fi for family devices
The global Internet connecting continents
A USB cable connecting a printer directly
Which statement correctly compares LAN, MAN, and WAN by area covered?
Only WANs allow devices to share resources
LAN and MAN cover identical areas always
WAN is smallest, MAN is medium, LAN is largest
LAN is smallest, MAN is medium, WAN is largest
Which network type covers the largest geographic area among these options?
Wide Area Network across countries
Local Area Network within a building
Metropolitan Area Network across a city
Personal Area Network around a user
A home printer and file storage are managed by a central machine that all laptops connect to. What model does this describe?
Public network with open access
Ring topology with token passing
Peer-to-Peer with equal sharing
Client-Server with centralized services
In a peer-to-peer (P2P) network, which statement is most accurate?
One server controls all resources
Ownership must be by an ISP
All devices share resources equally
Only wireless devices can connect
Which scenario best fits a private network?
An ISP’s national backbone
A coffee shop guest Wi‑Fi service
A citywide public hotspot mesh
A school’s internal staff network
Which topology connects all devices to a single central node?
Bus topology using one shared cable
Mesh topology with many paths
Ring topology in a closed loop
Star topology with a hub or switch
Which cable is most commonly associated with Ethernet in wired LANs?
Satellite geostationary link
Microwave point‑to‑point link
Twisted‑pair copper cabling
Infrared line‑of‑sight beam
Bluetooth devices around a person typically form what type of network?
PAN near a single user
LAN covering several rooms
MAN connecting multiple towns
WAN spanning many countries
Which statement best distinguishes public and private networks?
Public are faster than private
Private are always wireless only
Public are offered as a service
Private require international links
Look at the Bus topology sketch showing PCs on a single line with terminators at both ends. What is the main purpose of the terminators in a bus network?
They stop signal reflections on the shared cable
They convert digital signals to optical signals
They amplify signals for distant devices
They provide backup power to all devices
In the Ring topology diagram, data appears to travel from PC1 to PC2 to PC3 to PC4 and back to PC1. Which statement best describes how data moves in a ring network?
It hops randomly between adjacent nodes
It broadcasts to every node over a single bus
It uses a central hub that switches paths
It circulates around a closed loop in one direction
Refer to the Star topology image with a switch/hub in the center connecting PCs. Which advantage is most associated with this layout compared to bus or ring?
A single cable failure affects only one device
The network needs no active equipment at all
All devices share one collision domain always
Adding nodes requires rewiring the whole backbone
The notes describe twisted-pair Ethernet cable where copper wires are twisted together. Why are the pairs twisted?
To allow fiber optics to be added later
To reduce electromagnetic interference and crosstalk
To increase the total copper length used
To make the cable more colorful and flexible
Which connector is commonly used to terminate twisted-pair Ethernet cables in LANs such as Cat5e or Cat6?
USB Type-A plug
SC fiber connector
BNC coaxial plug
RJ45 modular plug
Which statement best describes an RJ45 connector in a typical home network?
Round plug used for audio cables
Coaxial tip for television ports
Plastic plug at Ethernet cable end
Small connector for fiber strands
Which pair correctly matches a protocol with its common use?
TCP/IP – only inside Bluetooth links
SMTP – streaming video content
FTP – sending instant messages
HTTP – delivering web pages
Which wireless connection type is commonly used for short‑range peripherals like headphones and keyboards?
Bluetooth
Satellite
Infrared
Mobile networks
Why are networking protocols necessary when devices communicate?
They define shared rules for messages
They increase cable physical strength
They encrypt all files by default
They replace routers in large networks
Which statement about wired media is accurate?
Coaxial is the newest Ethernet standard
RJ45 is only for wireless devices
Fiber‑optic is identical to power cords
Fiber‑optic uses light for very high speed
Which statement best describes an IP address in a local network?
A code that powers the router on
A unique number identifying each device
A password used for Wi‑Fi security
A label for the Ethernet cable type
In a typical home LAN, what acts as the default gateway for devices?
The router providing network exit
The switch connecting local cables
The DNS server storing names
The printer sharing documents
What is the primary role of DNS in network communication?
Encrypt packets between local devices
Assign MAC addresses to switches
Translate domain names to IP addresses
Allocate power to network hardware
A laptop tries to reach google.com but only knows the name, not the IP. Which component helps it find the correct IP to connect to?
Gateway blocking external traffic
Router assigning a private address
Switch directing broadcast traffic
DNS resolving the domain name
Which type of network is typically used for connecting devices within a single building?
MAN, Metropolitan Area Network
LAN, Local Area Network
WAN, Wide Area Network
PAN, Personal Area Network
In a wireless network, what does the term 'SSID' stand for?
Single Source Internet Device
Service Set Identifier
Secure System Identifier
Standard Signal Integration Device
What is the primary function of a router in a network?
To connect multiple networks and direct data traffic
To store and manage files for users
To provide power to network devices
To encrypt data for secure transmission
Which protocol is commonly used for secure data transmission over the internet?
HTTP
FTP
SMTP
HTTPS
What is the primary purpose of a switch in a network?
To serve as a firewall for network security
To provide internet access to all devices
To connect devices within the same network segment
To encrypt data being transmitted
What is the primary function of a router in a network?
To connect multiple devices within a single network
To filter and forward data packets between networks
To store data for backup purposes
To provide power to network devices
