CBSE Class 12
Informatics Practices
05 Internet Aand Web
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Q-1
What is the primary purpose of a computer network?
Easy
Computer Networks
A
To store data permanently
B
To connect computers for sharing resources
C
To increase processing speed
D
To replace operating systems
Answer: To connect computers for sharing resources
Explanation: A computer network allows connected devices to share resources such as data, hardware, and software.
Q-2
Which type of network covers a small geographical area such as a school or office?
Easy
Types of Networks
A
WAN
B
MAN
C
LAN
D
PAN
Answer: LAN
Explanation: A Local Area Network (LAN) is limited to a small geographical area.
Q-3
Which device is used to connect multiple computers within the same network?
Easy
Network Devices
A
Router
B
Switch
C
Modem
D
Repeater
Answer: Switch
Explanation: A switch connects multiple devices within a local network.
Q-4
Which network topology connects each device to a central device?
Easy
Network Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Star
Explanation: In a star topology, all devices are connected to a central hub or switch.
Q-5
What is the Internet best described as?
Easy
The Internet
A
A single large computer
B
A collection of LANs
C
A global network of interconnected networks
D
A communication device
Answer: A global network of interconnected networks
Explanation: The Internet is a worldwide system of interconnected computer networks.
Q-6
Which of the following is an application of the Internet?
Easy
Applications of Internet
A
Word processing
B
Email
C
Spreadsheet creation
D
File compression
Answer: Email
Explanation: Email is a common Internet-based service used for communication.
Q-7
What is a website?
Easy
Website
A
A single web page
B
A collection of related web pages
C
A web browser
D
A web server
Answer: A collection of related web pages
Explanation: A website consists of multiple related web pages linked together.
Q-8
What is the role of a web server?
Easy
Web Server
A
To design web pages
B
To display web pages
C
To store and deliver web pages to users
D
To browse the Internet
Answer: To store and deliver web pages to users
Explanation: A web server stores websites and delivers web pages to clients on request.
Q-9
Which service allows a website to be accessible on the Internet?
Easy
Hosting of a Website
A
Web designing
B
Web browsing
C
Web hosting
D
Web scripting
Answer: Web hosting
Explanation: Web hosting provides space and services required to make a website available on the Internet.
Q-10
Which software is used to access and view websites?
Easy
Browser
A
Web server
B
Search engine
C
Web browser
D
Protocol
Answer: Web browser
Explanation: A web browser is software used to access and view websites.
Q-11
Which characteristic best distinguishes a WAN from a LAN?
Medium
Types of Networks
A
Speed of data transfer
B
Number of computers connected
C
Geographical coverage area
D
Type of network topology used
Answer: Geographical coverage area
Explanation: A WAN covers a much larger geographical area than a LAN, often spanning cities or countries.
Q-12
Why is a switch preferred over a hub in modern networks?
Medium
Network Devices
A
Switches are cheaper
B
Switches broadcast data to all devices
C
Switches reduce unnecessary data traffic
D
Switches do not require power
Answer: Switches reduce unnecessary data traffic
Explanation: Switches send data only to the intended device, reducing network congestion.
Q-13
Which topology is MOST affected if the central device fails?
Medium
Network Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Star
Explanation: In a star topology, failure of the central hub or switch brings down the entire network.
Q-14
Which feature of the Internet allows different types of networks to communicate?
Medium
The Internet
A
Web browsers
B
Uniform Resource Locator (URL)
C
Standard communication protocols
D
Search engines
Answer: Standard communication protocols
Explanation: Standard protocols enable communication between diverse networks connected to the Internet.
Q-15
Which Internet service is MOST suitable for real-time voice communication?
Medium
Applications of Internet
A
Email
B
File Transfer
C
Video conferencing
D
Web browsing
Answer: Video conferencing
Explanation: Video conferencing supports real-time voice and video communication over the Internet.
Q-16
How does a web page differ from a website?
Medium
Website and Web Page
A
A web page is a collection of websites
B
A website consists of multiple web pages
C
A web page hosts websites
D
There is no difference
Answer: A website consists of multiple web pages
Explanation: A website is a collection of related web pages linked together.
Q-17
Which responsibility is handled by a web server?
Medium
Web Server
A
Displaying web pages on screen
B
Interpreting user queries
C
Storing and serving website content
D
Providing Internet connectivity
Answer: Storing and serving website content
Explanation: A web server stores website files and delivers them to users upon request.
Q-18
Why is web hosting essential for a website?
Medium
Hosting of a Website
A
To design web pages
B
To register domain names
C
To make the website accessible on the Internet
D
To browse websites
Answer: To make the website accessible on the Internet
Explanation: Web hosting provides the infrastructure required to publish a website online.
Q-19
Which statement best explains the role of a web browser?
Medium
Browser
A
It stores websites permanently
B
It interprets and displays web content for users
C
It hosts websites on the Internet
D
It manages network traffic
Answer: It interprets and displays web content for users
Explanation: A web browser interprets web content and displays it in a user-friendly format.
Q-20
Which factor MOST influences the performance of a computer network?
Medium
Computer Networks
A
Color of network cables
B
Number of users and available bandwidth
C
Type of operating system
D
Size of monitor
Answer: Number of users and available bandwidth
Explanation: Network performance depends on how many users share the available bandwidth.
Q-21
Why is a WAN generally slower than a LAN?
Hard
Types of Networks
A
WAN uses outdated hardware
B
WAN covers large distances causing higher latency
C
WAN does not use switches
D
WAN does not support protocols
Answer: WAN covers large distances causing higher latency
Explanation: WAN spans large geographical areas, leading to higher latency and lower speeds compared to LAN.
Q-22
Which network device plays the MOST critical role in connecting different networks together?
Hard
Network Devices
A
Switch
B
Hub
C
Router
D
Repeater
Answer: Router
Explanation: Routers connect different networks and direct data packets between them.
Q-23
Why is mesh topology rarely used for large-scale networks?
Hard
Network Topologies
A
It provides low reliability
B
It is difficult to troubleshoot
C
It requires a large number of connections
D
It cannot support Internet connectivity
Answer: It requires a large number of connections
Explanation: Mesh topology requires a large number of physical connections, making it expensive and complex.
Q-24
Which property of the Internet enables fault tolerance?
Hard
The Internet
A
Centralized control
B
Packet switching
C
Use of web browsers
D
Domain naming system
Answer: Packet switching
Explanation: Packet switching allows data to take alternate paths if part of the network fails.
Q-25
Which Internet application would be MOST affected by high latency?
Hard
Applications of Internet
A
Email
B
File downloading
C
Video conferencing
D
Web page viewing
Answer: Video conferencing
Explanation: Real-time applications like video conferencing are highly sensitive to latency.
Q-26
Why can a website consist of multiple web pages but still have a single domain name?
Hard
Website and Web Page
A
Each page has a different server
B
Pages are linked through hyperlinks under one domain
C
All pages must be stored on one computer
D
Domain names limit the number of pages
Answer: Pages are linked through hyperlinks under one domain
Explanation: A domain represents a website, and multiple web pages are linked under that single domain.
Q-27
What would happen if a web server is unavailable?
Hard
Web Server
A
The website loads slowly
B
The website becomes inaccessible
C
The browser crashes
D
The Internet stops working
Answer: The website becomes inaccessible
Explanation: If the web server is down, users cannot access the website it hosts.
Q-28
Why is web hosting different from web designing?
Hard
Hosting of a Website
A
Hosting creates web content
B
Designing publishes websites
C
Hosting provides storage and access, designing creates content
D
They are the same process
Answer: Hosting provides storage and access, designing creates content
Explanation: Web designing creates the content, while web hosting makes it available on the Internet.
Q-29
Which factor directly affects how a browser renders a web page?
Hard
Browser
A
Network topology
B
Web server hardware
C
HTML and related technologies
D
Type of Internet connection only
Answer: HTML and related technologies
Explanation: Browsers interpret HTML, CSS, and scripts to render web pages correctly.
Q-30
Why is the Internet described as a decentralized network?
Hard
The Internet
A
It is controlled by a single organization
B
It has no central controlling authority
C
It operates only within countries
D
It does not use servers
Answer: It has no central controlling authority
Explanation: The Internet has no single central authority; it is a decentralized collection of networks.
Q-31
Which statement best describes a computer network?
Easy
Computer Networks
A
A single powerful computer
B
A group of connected computers sharing resources
C
A software application
D
A type of operating system
Answer: A group of connected computers sharing resources
Explanation: A computer network consists of interconnected computers that share data and resources.
Q-32
Which network is most suitable for communication within a city?
Easy
Types of Networks
A
LAN
B
MAN
C
WAN
D
PAN
Answer: MAN
Explanation: A Metropolitan Area Network (MAN) covers a city or a large campus.
Q-33
Which device helps reduce network traffic by sending data only to the intended recipient?
Easy
Network Devices
A
Hub
B
Switch
C
Repeater
D
Modem
Answer: Switch
Explanation: A switch forwards data only to the destination device, reducing unnecessary traffic.
Q-34
Which topology provides a dedicated point-to-point connection between every pair of devices?
Easy
Network Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Mesh
Explanation: Mesh topology connects every device directly to all other devices.
Q-35
Which Internet service is primarily used for sending and receiving messages?
Easy
Applications of Internet
A
FTP
B
Email
C
WWW
D
VoIP
Answer: Email
Explanation: Email is used for exchanging electronic messages over the Internet.
Q-36
Which component is required to view websites on a computer?
Easy
Browser
A
Web server
B
Web browser
C
Search engine
D
Protocol
Answer: Web browser
Explanation: A web browser is used to access and display websites.
Q-37
Why is a LAN generally faster than a WAN?
Medium
Types of Networks
A
LAN uses wireless technology
B
LAN covers a smaller geographical area
C
LAN uses fewer protocols
D
LAN has more users
Answer: LAN covers a smaller geographical area
Explanation: LANs cover small areas, resulting in lower latency and higher speed.
Q-38
Which device is essential for connecting a home network to the Internet?
Medium
Network Devices
A
Switch
B
Router
C
Hub
D
Repeater
Answer: Router
Explanation: A router connects a local network to external networks such as the Internet.
Q-39
Which topology allows easy addition or removal of devices without affecting the network?
Medium
Network Topologies
A
Bus
B
Ring
C
Star
D
Mesh
Answer: Star
Explanation: In star topology, devices can be added or removed easily via the central device.
Q-40
Which Internet feature ensures that data reaches the correct destination?
Medium
The Internet
A
Packet addressing
B
Web hosting
C
Search engines
D
Web browsers
Answer: Packet addressing
Explanation: Each data packet carries destination addressing information.
Q-41
Which application of the Internet enables online buying and selling?
Medium
Applications of Internet
A
E-learning
B
E-commerce
C
Email
D
Video conferencing
Answer: E-commerce
Explanation: E-commerce refers to buying and selling goods and services online.
Q-42
Why is a website usually stored on a web server rather than a personal computer?
Medium
Web Server
A
Web servers are cheaper
B
Web servers provide continuous availability
C
Personal computers cannot access the Internet
D
Web servers do not require software
Answer: Web servers provide continuous availability
Explanation: Web servers are designed to provide continuous, reliable access to websites.
Q-43
Which role does web hosting play in website deployment?
Medium
Hosting of a Website
A
Designing the website layout
B
Writing website code
C
Providing storage and Internet access
D
Creating hyperlinks
Answer: Providing storage and Internet access
Explanation: Web hosting provides the infrastructure to store and publish websites online.
Q-44
Which browser feature helps users revisit frequently accessed websites?
Medium
Browser
A
Bookmarks
B
Cache
C
Cookies
D
History
Answer: Bookmarks
Explanation: Bookmarks allow users to save and quickly access favorite websites.
Q-45
Why does failure of the backbone network significantly impact Internet services?
Hard
The Internet
A
Backbone controls websites
B
Backbone carries high-volume traffic
C
Backbone stores web pages
D
Backbone manages browsers
Answer: Backbone carries high-volume traffic
Explanation: The backbone network carries large volumes of Internet traffic; its failure affects connectivity widely.
Q-46
Which limitation makes bus topology unsuitable for large networks?
Hard
Network Topologies
A
High installation cost
B
Single point of failure in backbone cable
C
Difficult to add devices
D
Requires many cables
Answer: Single point of failure in backbone cable
Explanation: Failure of the main cable in bus topology disrupts the entire network.
Q-47
Why are switches more scalable than hubs in enterprise networks?
Hard
Network Devices
A
Switches use less power
B
Switches support intelligent data forwarding
C
Switches do not require configuration
D
Switches eliminate network protocols
Answer: Switches support intelligent data forwarding
Explanation: Switches intelligently forward data, supporting efficient and scalable networks.
Q-48
Which factor most directly affects the loading time of a website?
Hard
Website
A
Monitor resolution
B
Bandwidth and server response
C
Keyboard type
D
Operating system theme
Answer: Bandwidth and server response
Explanation: Website loading time depends on available bandwidth and server responsiveness.
Q-49
Why is decentralization a strength of the Internet?
Hard
The Internet
A
It reduces the number of users
B
It eliminates the need for protocols
C
It improves reliability and fault tolerance
D
It limits global connectivity
Answer: It improves reliability and fault tolerance
Explanation: Decentralization ensures the Internet continues functioning even if some parts fail.
Q-50
Which situation best illustrates the need for web hosting?
Hard
Hosting of a Website
A
Designing a web page offline
B
Testing a website on a local computer
C
Making a website accessible worldwide
D
Editing website content
Answer: Making a website accessible worldwide
Explanation: Web hosting is required to make a website accessible to users across the Internet.
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