Bandwidth, Clock Rate & Speed

Question 1

The rate at which Ethernet interfaces physically transmit data is determined by what command?

Answer 1

Speed

Question 2

If you set an interface to a speed 10 command, how fast will the interface transmit data?

Answer 2

10Mbps

Question 3

True or False - both side of the link must be configured to the same speed otherwise you will encounter transmission issues.

Answer 3

True

Question 4

What is clock rate?

Answer 4

The rate at which serial interfaces physically transmit data

Question 5

What speed do serial interfaces physically transmit data by default?

Answer 5

1.544Mbps

Question 6

Do serial clock rate commands have to be set to match on both sides of the link?

Answer 6

Yes

Question 7

What is the difference between Speed and Bandwidth?

Answer 7

Bandwidth is not tied to the physical speed at which data will be transferred. Speed does affect that though.

Question 8

If you set the bandwidth to 50Mbps on a Gigabit interface, how fast will the data be transmitted and why?

Answer 8

1000Mpbs. This is because the Bandwidth command doesn’t actually affect the physically transmissible speed of the link

Question 9

Why use the bandwidth policy if it doesn’t affect the physical speed transmission of the link?

Answer 9

Because it influences software policy. For example if you had a router with two interfaces going to separate paths and you wanted to influence which path it takes and it not do ECMP then you could set the bandwidth of that path to something lower than the other path. Thus, the other route would be preferred.