Understanding Computer Networks

What device connects multiple networks together?

• Modem

• Router

• Switch

• Hub

Which protocol is used for secure data transmission?

• HTTPS

• POP3

• SMTP

• FTP

What is the primary function of a router?

• To provide internet access to devices.

• To connect devices within a single network.

• To store data packets for later use.

• To direct data packets between networks.

Which layer of the OSI model does TCP operate on?

• Application layer

• Network layer

• Transport layer

• Data link layer

What does a firewall do in a network?

• A firewall allows all traffic to pass through without checks.

• A firewall protects a network by filtering traffic and preventing unauthorized access.

• A firewall is used to enhance Wi-Fi signal strength.

• A firewall increases network speed by boosting traffic.

Which protocol is used for sending emails?

• POP3

• SMTP

• IMAP

• FTP

What is the purpose of an IP address?

• To encrypt data transmitted over the internet.

• To store files on a remote server.

• The purpose of an IP address is to identify and locate devices on a network.

• To provide a unique username for each user.

What type of attack involves overwhelming a network with traffic?

• Denial of Service (DoS) attack

• Phishing attack

• SQL injection attack

• Man-in-the-middle attack

Which protocol is used for web browsing?

• HTTP/HTTPS

• POP3

• FTP

• SMTP

What is the main purpose of network encryption?

• To protect data confidentiality and integrity during transmission.

• To enhance network speed and performance.

• To simplify network configuration and management.

• To ensure compatibility with all devices on the network.