OSI Model

Question 1

What is Layer 1, what does it do, and give examples

Answer 1

Physical Layer - Maintains and sends bits along a physical connection.

Ethernet Cables, Hubs, Repeaters

Question 2

What is Layer 2, what does it do, and give examples

Answer 2

Data-link Layer - Focuses on delivering data to other devices within a network. Concerned with MAC Address and layers below.

Ethernet, Link Layer Discovery Protocol(LLDP), Multiprotocol Label Switching(MPLS), Address Resolution Protocol(ARP)

Question 3

What is Layer 3, what does it do, and give examples

Answer 3

Networking Layer - Handles delivering data from one network to a different network.

IPv4/6, Routing Information Protocol(RIP), Internet Control Message Protocol(ICMP), Address Resolution Protocol(ARP)

Question 4

What is Layer 4, what does it do, and give examples

Answer 4

Transport Layer - Provides traffic control on the flow of data as well as prepare data

TCP/UDP,