Question 3
Which statement about Cisco Discovery Protocol is true?
A.The multicast address 0100.0cdd.dddd is used as the destination address for periodic advertisements.
B.An inactive VLAN that is configured on an access port passes periodic Cisco Discovery Protocol advertisements.
C.The multicast address 0100.0ccc.ccd is used as the destination address for periodic advertisements.
D.A VLAN must be active on an access port before periodic Cisco Discovery Protocol advertisements are passed.
Correct Answer: D
Explanation/Reference:
All CDP packets include a VLAN ID. If you configure CDP on a Layer 2 access port, the CDP packets sent from that access port include the access port VLAN ID. If you configure CDP on a Layer 2 trunk port, the CDP packets sent from that trunk port include the lowest configured VLAN ID allowed on that trunk port.
CDP messages on the active physical interfaces (Ethernet NIC) to a well-known multicast address (0100.0CCC.CCCC.
Which statement about Cisco Discovery Protocol is true?
A.The multicast address 0100.0cdd.dddd is used as the destination address for periodic advertisements.
B.An inactive VLAN that is configured on an access port passes periodic Cisco Discovery Protocol advertisements.
C.The multicast address 0100.0ccc.ccd is used as the destination address for periodic advertisements.
D.A VLAN must be active on an access port before periodic Cisco Discovery Protocol advertisements are passed.
Correct Answer: D
Explanation/Reference:
All CDP packets include a VLAN ID. If you configure CDP on a Layer 2 access port, the CDP packets sent from that access port include the access port VLAN ID. If you configure CDP on a Layer 2 trunk port, the CDP packets sent from that trunk port include the lowest configured VLAN ID allowed on that trunk port.
CDP messages on the active physical interfaces (Ethernet NIC) to a well-known multicast address (0100.0CCC.CCCC.
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