| Exam 300-115 | Question id=1357 | Layer 2 Technologies |
Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true?
| A. |
Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC. | |
| B. |
Each device broadcasts periodic advertisements to all of its neighbors. | |
| C. |
Each device sends periodic advertisements to a central device that builds the network topology. | |
| D. |
Each device sends periodic advertisements to all IP addresses in its ARP table. |
Cisco devices send periodic CDP announcements to the multicast destination address 01-00-0c-cc-cc-cc, out each connected network interface. These multicast packets may be received by Cisco switches and other networking devices that support CDP into their connected network interface.