Network Protocols

Protocols are _______ for computers and networks.

This is the most widely used protocol for communication on the Internet. It is used to ensure reliable data transmission and is responsible for routing data packets between networks.

• TCP/IP

• HTTP

• UDP

• SMTP

This protocol is used for communication between web servers and clients, such as web browsers. It is the foundation of the World Wide Web and is used to transmit web pages, images, and other content.

• HTTP

• FTP

• SMTP

• DNS

Domain names are converted into IP addresses using this protocol. It is used every time you access a website by typing its URL into your web browser.

• DNS

• HTTP

• TCP/IP

• SMTP

This protocol is used to move files among computers connected to a network. Large files like software programs, music, and video files are frequently shared using this method.

• FTP

• HTTP

• SSH

• SMTP

What port does File Transfer Protocol (FTP) use? (Choose two)

• 25

• 20

• 22

• 21

Answer explanation

File Transfer Protocol uses ports 20 and 21.

This protocol governs how computers transfer files from one system to another over the internet.

Mnemonic - "Forget the Pandemic 2021"

Carl has configured a perimeter network positioned between two firewalls. He created a semi-safe buffer zone between the Internet and his private network. What is this known as?

• Network Security Zone

• Demilitarized Zone

• Firewall Safety Zone

• Security Buffer Zone

Answer explanation

This is known as a demilitarized zone.

Which is not one of the seven layers of the OSI Model?

• Network

• Presentation

• Physical

• Internet

Answer explanation

Internet does not belong here. Please Do Not Throw Sausage Pizza Away.

What two versions of Internet Protocol are the core protocols used for the internet?

• IPv4 and IPv6

• IPv6 and IPv3

• IPv2 and IPv4

• IPv2 and IPv6

Answer explanation

We use versions IPv4 and IPv6 as the core protocols for the internet.

What is a domain?

• A room dedicated to servers and equipment found on most schools, businesses, or companies. Domains can also be based in the cloud or be virtual.

• A type of service provided by a company online

• A name for an IP address For example, lcusd.net is the website domain for our district. This allows you to type the name instead of the IP address to access the website.

• In a network, a domain is a specific area of the network identified by ports.