Layers of the Internet

What is the primary function of the Physical Network layer?

• It is responsible for the translation of domain names into IP addresses

• It is responsible for the physical connection of devices enabling data transfer

• It is responsible for sending large messages over the Internet prioritizing accuracy

• It is responsible for unique identification and routing of messages between internet users

What is the primary function of the Internet Protocol (IP)?

• It is responsible for addressing and routing packets on the internet

• It is responsible for establishing physical connections between devices

• It is responsible for ensuring the accuracy of large messages sent over the internet

• It is responsible for converting domain names into IP addresses

What problem does the TCP: Transmission Control Protocol layer solve?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Send large messages over the Internet when accuracy is most important

• Translate human-readable domains into IP addresses

What problem does the UDP: User Datagram Protocol layer solve?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Send large messages over the Internet when accuracy is most important

• Send large messages over the Internet when speed is most important

What problem does the DNS: Domain Name System layer solve?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Translate human-readable domains into IP addresses

• Allow computers to request and share webpages, audio, images, videos, and other file types on the Internet

What problem does the HTTP: HyperText Transfer Protocol layer solve?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Translate human-readable domains into IP addresses

• Allow computers to request and share webpages, audio, images, videos, and other file types on the Internet

How does the Physical Network layer work?

• Fiber optic cables, wifi signals, or copper wires physically connect the computers, smartphones, servers, etc. that make up the Internet

• Each device on the internet is given a unique IP address

• Messages are divided into packets and sent all at once

• When you try to go to a domain like example.com, your computer first contacts a system of servers collectively called the DNS

How does the IP: Internet Protocol layer work?

• Fiber optic cables, wifi signals, or copper wires physically connect the computers, smartphones, servers, etc. that make up the Internet

• Each device on the internet is given a unique IP address

• Messages are divided into packets and sent all at once

• When you try to go to a domain like example.com, your computer first contacts a system of servers collectively called the DNS

What is the purpose of the DNS: Domain Name System layer?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Translate human-readable domains into IP addresses

• Allow computers to request and share webpages, audio, images, videos, and other file types on the Internet

What is the main function of the TCP: Transmission Control Protocol layer?

• Uniquely identifying people on the internet and routing messages between them

• Physically connecting devices to one another so that information can move through the network

• Send large messages over the Internet when accuracy is most important

• Translate human-readable domains into IP addresses