Networking Appliances

Question 1

Contrast a switch from a hub.

Answer 1

Hub: Passively allows multiple devices to be connected to one network.
Switch:: Actively allows multiple devices to be connected to one network; switches may also have software that manages devices.

Question 2

What is the backronym (long name) for a modem?

Answer 2

Modulator/Demodulator.

Question 3

What is the function of a modem?

Answer 3

To serially modulate or demodulate data into analogue signals that can be transmitted through wires.

Question 4

Contrast a router and a modem.

Answer 4

Router: Routes data between networks (local or global)
Modem: Modulates data into analogue signals for wide-area communication

Router is the brain, modem is the mouth.

Question 5

Do network hubs run on the physical or datalink layer?

Answer 5

Physical.

They are passive.

Question 6

Do network switches run on the physical or datalink layer?

Answer 6

Datalink.

They are not passive.

Question 7

What is the backronym for NIC?

Answer 7

Network Interface Card.

Question 8

Which layer does a NIC operate on?

Answer 8

• Physical & Datalink