The Physical Layer - Cisco

Question 1

What is the purpose of the Physical Layer?

Answer 1

To create a physical connection to a local network

Question 2

What do Network Interface Cards (NICs) do?

Answer 2

Connect a device to the network

Question 3

What are the types of NIC and what are they used for?

Answer 3

Ethernet NIC, used for wired connections.
WLAN NICs, used for wireless connections.

Question 4

What is Bandwidth?

Answer 4

The capacity at which a medium can carry data.

Question 5

What is Latency

Answer 5

The amount of time for data to travel from one point to another.

Question 6

What is Throughput?

Answer 6

The measure of the transfer of bits across the media over a giver period of time.

Question 7

What is Goodput?

Answer 7

The measure of usable data transferred over a period of time.

Question 8

What are the types of copper cabling?

Answer 8

Unshielded Twister-Pair
Shielded Twisted-Pair
Coaxial

Question 9

What type of cables use RJ-45 connectors?

Answer 9

UTP
STR

Question 10

What is the most common network media?

Answer 10

UTP cables