Internet and Networking Quiz

Which of the following best explains how the Internet sends information between two devices?

• Data travels as a continuous stream.

• Data is encrypted and stored in a cloud before delivery.

• Data is broken into packets and routed independently to the destination.

• A dedicated line is created for every transmission.

What is the main purpose of DNS (Domain Name System)?

• Encrypt web traffic for secure connections.

• Assign IP addresses to new devices.

• Map human-readable URLs to machine-readable IP addresses.

• Regulate bandwidth between servers.

Which of the following statements about IP addresses is true?

• Every device on the Internet shares the same IP address.

• IP addresses are only used within private networks.

• IP addresses uniquely identify devices on a network.

• IP addresses change every time data is transmitted.

Which protocol ensures that all packets are delivered and reassembled in the correct order?

• IP

• DNS

• TCP

• HTTP

What is the main function of a router on the Internet?

• Encrypt data packets.

• Translate domain names to IP addresses.

• Manage the security of a network.

• Determine the best path for data packets to travel.

A student clicks on a link to open a webpage. What is the correct sequence of events?

• HTTP request → DNS lookup → IP response

• DNS lookup → IP address found → HTTP request sent

• IP address found → HTTP request → DNS response

• DNS request → TCP handshake → IP resolution

Which of the following is a benefit of packet switching?

• It guarantees all packets arrive in order.

• It allows data to be sent efficiently even when some parts of the network fail.

• It prevents malware from entering the system.

• It compresses all packets for faster delivery.

The Internet is described as being fault-tolerant. This means:

• All devices must be connected at all times for communication.

• A single failure will shut down the entire Internet.

• Data can reroute around failed connections due to redundancy.

• Only secure websites can operate during failure.

Which protocol is responsible for secure communication between websites and browsers?

• HTTP

• HTTPS

• FTP

• SMTP

A hacker tricks a user into entering personal information on a fake website. This is an example of:

• A denial-of-service attack

• A packet sniffer

• A phishing attack

• A brute-force login