Google IT Support Professional:The Bits and Bytes of Computer Networking (Week 1) Introduction to Networking Quiz Answers.

 

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★The Data Link Layer★

Q1.How many octets are there in a MAC address?

1. 5
2. 8
3. 4
4. 6

A MAC address is a 48-bit number consisting of 6 octets.

Q2.What address is used for Ethernet broadcasts?

1. 00:00:00:00:00:00
2. 11:11:11:11:11:11
3. FF:FF:FF:FF:FF:FF
4. FF:00:FF:00:FF:00

The address FF:FF:FF:FF:FF:FF is used for Ethernet broadcast traffic.

Q3.What is a cyclical redundancy check?

1. A technique that allows for multiple logical LANs to operate on the same equipment
2. The actual data being transported by an Ethernet frame
3. A way for two computers to synchronize their clocks
4. A mathematical calculation used to ensure that all data arrived intact

A cyclical redundancy check ensures that there was no data corruption.

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