Which two pieces of information are carried in a Cisco Discovery Protocol advertisement? (Choose Two)
A. Processor Type
B. VTP domain name
C. Routing protocol
D. Memory usage
E. Spanning-Tree mode
F. Native VLAN-ID
Which two pieces of information are carried in a Cisco Discovery Protocol advertisement?
CDP Advertisement includes the following:
VTP Management Domain – 0x0009 (CDPv2)
Native VLAN – 0x000a (CDPv2)
Version – CDP version (0x01 or 0x02)
Time to Live (TTL) – this is the holdtime (in seconds) that the information should be kept for by the receiving device default 180 seconds).
Checksum
Type – The CDP Type/Length/Value which can be one of the following:
Device ID – 0x0001
Address – 0x0002
Port ID – 0x0003
Capabilities – 0x0004
Version – 0x0005
Platform – 0x0006
IP Prefix – 0x0007
VTP Management Domain – 0x0009 (CDPv2)
Native VLAN – 0x000a (CDPv2)
Duplex status – 0x000b (CDPv2)
Appliance ID (separate voip) – 0x000e (CDPv2)
Power consumption (milliwatts) – 0x0010 (CDPv2)
Length – This is the length (in bytes) of the Type/Length/Value fields
Value – This has the Type/Length/Value information, and can be the following:
Device ID – This can be the device’s MAC address in ASCII or the FQDN
Address – This TLV has a frame structure as illustrated below!
Port ID – This has an ASCII string that names the port from which the message is sent
Capabilities – has a value describing the device capabilities
0x01 – level 3 routing
0x02 – level 2 transparent bridging (or source-route bridging if 0x04 bit set)
0x04 – level 2 source-route bridging
0x08 – level 2 switching not running Spanning Tree
0x10 – sends and receives packets for a network layer protocol
0x20 – the device does not forward IGMP reports
0x40 – level 1 function
Version – Software version running on the device
Platform – ASCII string describing the device e.g. Cisco 7000
IP Prefix – a set of 0 or more IP prefixes. The length field includes the length of the type and value fields, plus 5 bytes for every IP prefix (directly connected IP network) included. Each IP prefix consists of 4 bytes for the IP network plus 1 byte for the mask. The network mask can be in the range 0 to 32, and represents the number of bits set in the mask. This IP Prefix enables IP router to communicate IP topology information to a central router, without using an IP routing protocol
I think BF are correct answers
B & F are the correct answers here. See:
Cisco Discovery Protocol Configuration Guide, Cisco IOS Release 15M&T
Chapter: Cisco Discovery Protocol Version 2
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cdp/configuration/15-mt/cdp-15-mt-book/nm-cdp-discover.html
See the last 2 items in the list.
The information contained in Cisco Discovery Protocol advertisements varies based on the type of device and the
installed version of the operating system. Some of the information that Cisco Discovery Protocol can learn includes:
• Cisco IOS version running on Cisco devices
• Hardware platform of devices
• IP addresses of interfaces on devices
• Locally connected devices advertising Cisco Discovery Protocol
• Interfaces active on Cisco devices, including encapsulation type
• Hostname
• Duplex setting
• VLAN Trunking Protocol (VTP) domain
• Native VLAN