Understanding Internet and Data Communication

What is the purpose of a firewall in internet safety?

• To enhance internet speed by optimizing data flow.

• To store user data securely on the internet.

• To provide a backup for lost internet connections.

• The purpose of a firewall in internet safety is to protect networks by controlling traffic and preventing unauthorized access.

Name one common method to secure data during transmission.

• SMTP (Simple Mail Transfer Protocol)

• TLS (Transport Layer Security)

• FTP (File Transfer Protocol)

• HTTP (Hypertext Transfer Protocol)

What does VPN stand for and how does it enhance internet safety?

• VPN stands for Virtual Private Network.

• VPN stands for Virtual Protected Network.

• VPN stands for Variable Private Network.

• VPN stands for Virtual Public Network.

Explain the difference between TCP and UDP in data transmission.

• TCP is used for streaming video, while UDP is used for file transfers.

• UDP guarantees data delivery while TCP does not.

• TCP is faster and connectionless than UDP.

• TCP is reliable and connection-oriented, while UDP is faster and connectionless.

What is phishing and how can you protect yourself from it?

• Phishing is a type of computer virus that infects your device.

• You can protect yourself by ignoring all emails from unknown senders.

• Phishing is a method of securing your online accounts with passwords.

• Phishing is a cyber attack that tricks individuals into revealing sensitive information. Protect yourself by being cautious of unsolicited communications, verifying sender identities, using two-factor authentication, and keeping software updated.

Identify a device that connects multiple computers in a network.

• Router

• Switch

• Modem

• Access Point

What is the role of a router in data communication?

• The role of a router in data communication is to route data packets between networks.

• A router connects devices within a single network.

• A router amplifies signals to increase data speed.

• A router stores data packets for later use.

Describe what bandwidth means in the context of internet speed.

• Bandwidth refers to the physical distance of an internet connection.

• Bandwidth is the maximum data transfer rate of an internet connection, affecting speed and performance.

• Bandwidth is the amount of time it takes to load a webpage.

• Bandwidth is the number of devices connected to the internet.

What is the significance of encryption in data transmission?

• Encryption is significant in data transmission as it protects data confidentiality and integrity.

• Encryption is only necessary for public networks.

• Encryption is primarily used for data storage rather than transmission.

• Encryption slows down data transmission significantly.

List two types of networks based on their size.

• Local Area Network (LAN), Wide Area Network (WAN)

• Personal Area Network (PAN)

• Global Area Network (GAN)

• Metropolitan Area Network (MAN)