Quiz 1

Question 1

Which field of an Ethernet frame provides receiver clock synchronization ?

1. Preamble

2. SFD

3. Type

4. FCS

Question 2

How long is the physical address of a network device ?

1. 32 bytes

2. 32 bites

3. 48 bytes

4. 48 bits

Question 3

What is the OUI of this MAC address ? E8BA.7011.2874

1. E8BA

2. E8BA.70

3. 7011

4. E8BA.7011

Question 4

Which field of an Ethernet frame does a switch use to populate its MAC address table ?

1. Preamble

2. Length

3. Source MAC address

4. Destination MAC address

Question 5

What kind of frame does a switch flood out of all interfaces except the one it was received on ?

1. Unknown unicast

2. Known unicast

3. Allcast

Solutions

Question 1

• Preamble

Question 2

• 48 bits

Question 3

• E8BA.70

The OUI (Organizationally Unique Identifier) is the first half (24 bits) of a MAC address. It is a unique value assigned to the maker of the device.

Question 4

• Source MAC address

Question 5

• Unknown unicast