Introduction to Computer Networks Quiz - CBSE Class 9 Computer Science
Free practice quiz: Introduction to Computer Networks (CBSE Class 9 Computer Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
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What does WAN stand for in networking?
- Wide Area Network
- Wireless Area Network
- Wired Area Network
- Web Area Network
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Answer: A. Wide Area Network
WAN stands for Wide Area Network, which refers to a network that covers a larger geographical area such as a city or a country.
Which protocol is used for secure communication over a computer network?
- HTTPS
- HTTP
- FTP
- SMTP
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Answer: A. HTTPS
HTTPS is the secure version of HTTP, where 'S' stands for secure. It is used to encrypt data transmission over a network, ensuring secure communication.
What is the main purpose of the OSI model in networking?
- To standardize networking processes
- To enhance internet speed
- To encrypt data
- To provide internet access to all devices
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Answer: A. To standardize networking processes
The OSI (Open Systems Interconnection) model is a conceptual framework used to standardize the functions of a telecommunication or computing system without regard to its underlying internal structure and technology.
How does a VPN (Virtual Private Network) enhance security?
- By encrypting data transmission
- By speeding up data transmission
- By connecting only trusted devices
- By offering free internet access
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Answer: A. By encrypting data transmission
A VPN enhances security by encrypting data transmission between the user's device and the VPN server, protecting the data from being accessed by unauthorized users.
Which protocol is used to send email messages?
- SMTP
- FTP
- HTTP
- IMAP
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Answer: A. SMTP
SMTP stands for Simple Mail Transfer Protocol and it is used to send emails from a client to a server or between servers.