COSC203 - PART V

Question 1

What is the main difference between LAN and WAN?

Answer 1

LAN interconnects computers within a limited geographic area
WAN extends over a large geographic area and is used to connect LANs and other types of networks together.

Question 2

What frame structure does this refer to?

Answer 2

Ethernet frame structure

Question 3

Which protocol helps determine interface’s MAC address, knowing its IP address?

Answer 3

ARP - Address Resolution Protocol

Question 4

What fields are included in the ARP header?

Answer 4

IP/MAC address mappings, and TTL (Time To Live) - time after which address mapping will be forgotten.

Question 5

The ethernet switch is a ___ -layer device

Answer 5

Link. It stores and forwards ethernet frames.

Question 6

What are some characteristics of the ethernet switch?

Answer 6

It is transparent - hosts unaware of presence of switches, and it is self-learning, switches do not need to be configured.

Question 7

What do switches and routers have in common?

Answer 7

They are both store-and-forward, and they both have forwarding tables.

Question 8

Where’s the rest of this lecture’s content?

Answer 8

It’s all images and ✨respectfully✨ I cannot be bothered.