week 4 pt 2

Question 1

What layer are switches

Answer 1

Layer 2 Data link

Question 2

What are its 2 advantages

Answer 2

Concentrates on connection like a hub and guaranteeing bandwidth like a bridge

Question 3

How do link layer switches operate in the physical layer

Answer 3

Regenerates the signal it receives

Question 4

How do link layer switches operate in the data link layer

Answer 4

Can see source and destination MAC address of each frame

Question 5

How does the switch operate

Answer 5

Uses MAC address to figure out who to send data to

Question 6

What are the cons of switches

Answer 6

More expensive than hubs and bridges
Harder problem isolation due to microsegmentation

Question 7

State the function of routers in each layer

Answer 7

Layer 1: creates signal
Layer 2: checks mac address
Layer 3: checks IP address

Question 8

What is the overall function of a router

Answer 8

Chooses best path for packets through network using IP address

Question 9

cons of a router

Answer 9

More expensive, less bandwidth and slower

Question 10

Purpose of a gateway

Answer 10

Connects two dissimilar networks using different formatting, communication protocols and topologies