Network access

Question 1

IS LLDP a layer 2 or layer 3 protocol?

Answer 1

Layer 2

Question 2

What STP standard natively include PortFast, UplinkFast, and BackboneFast?

1. 802.1D
2. 802.1s
3. 802.1w

Answer 2

3. 802.1w (RSTP)

Question 3

An LACP channel-group on switch A is configured to operate in active mode.

in which modes could you configure the corresponding channel group on switch B to create a valid EtherChannel configuration?

1. on
2. desirable
3. auto
4. active
5. passive

Answer 3

4. active
5. passive

However passive and passive wont work because both ports would be listening and waiting so no EtherChannel would form.

Question 4

An PAgP channel-group on switch A is configured to operate in auto mode.

in which modes could you configure the corresponding channel group on switch B to create a valid EtherChannel configuration?

1. on
2. desirable
3. auto
4. active
5. passive

Answer 4

2. desirable
3. auto

However auto and auto wont work because both ports would be listening and waiting so no EtherChannel would form.