Cisco Certified Network Associate (200-301 CCNA) – Question331

What is a function of MAC learning on a switch?

A.
MAC address learning is disabled by default on all VLANs.
B. Frames received for a destination MAC address not listed in the address table are dropped.
C. The MAC address table is used to populate the ARP table.
D. A static MAC address is manually added to the MAC table.

Correct Answer: D

Cisco Certified Network Associate (200-301 CCNA) – Question329

An engineer must configure neighbor discovery between the company router and an ISP.

What is the next step to complete the configuration if the ISP uses a third-party router?

A.
Enable LLDP globally.
B. Disable CDP on gi0/0.
C. Enable LLDP TLVs on the ISP router.
D. Disable auto-negotiation.

Correct Answer: A

Cisco Certified Network Associate (200-301 CCNA) – Question324



Refer to the exhibit. Which switch becomes the root of the spanning tree?

A.
Switch 1
B. Switch 2
C. Switch 3
D. Switch 4

Correct Answer: B

Explanation:

Explanation:
The root bridge is the bridge with the lowest Bridge ID. All the decisions like which ports are the root ports (the port with the best path to the root bridge) are made from the perspective of the root bridge. In case of a tie (not the case in this example) then the root bridge will be the switch with the lowest MAC address.

Cisco Certified Network Associate (200-301 CCNA) – Question323


Refer to the exhibit. Host A sent a data frame destined for host D.

What does the switch do when it receives the frame from host A?

A.
It floods the frame out of all ports except port Fa0/1
B. It experiences a broadcast storm
C. It shuts down the port Fa0/1 and places it in err-disable mode
D. It drops the frame from the switch CAM table

Correct Answer: A