Network revision

Which device is essential for connecting a home network to the internet?

• Switch

• Router

• Hub

• NIC

MAC addresses are used by routers to forward data.

• True
• False

A NIC is required for both wired and wireless connections.

• True
• False

What is the main advantage of a switch over a hub?

• It can connect to the internet

• It reduces network congestion by sending data only to the intended device

• It provides wireless connectivity

• It operates at Layer 3 of the OSI model

Which device allows Wi-Fi-enabled devices to connect to a wired network?

• Router

• Switch

• Access Point

• NIC

Which of the following uses TCP to ensure reliable connections?   

• HTTP only   

• FTP and SMTP   

• DNS only  

• None of the above   

Which of the following is a feature of DNS?    

• Reduces website load times using caching   

• streams videos only

• Prevents secure connections 

• Deletes websites from the Internet   

What is a key difference between FTP and HTTP protocols?

• FTP is stateless, while HTTP is stateful.

• FTP uses one connection for all actions; HTTP uses two.

• FTP transfers files, HTTP handles web browsing and data requests

• HTTP uses separate ports for control and data, FTP uses one

Which of the following best describes the role of the SMTP in the email sending process?

• Receives and stores emails permanently

• Converts domain names to IP addresses

• Transfers email from sender to recipient’s server via TCP

• Lets the user read emails on any device

What is the main difference between Active and Passive modes in FTP?

• Active mode relies on a reverse server-to-client connection.

• Active mode only works over wireless internet.  

• Passive mode does not use a data port.    

• Passive mode prevents firewalls.