CCNA - LLDP/CDP Flashcards
What does CDP stand for in networking?
Cisco Discovery Protocol
What layer of the OSI model does CDP operate at?
Layer 2 (Data Link layer)
True or False: CDP is a proprietary protocol developed by Cisco.
True
What is the purpose of CDP?
To discover information about directly connected Cisco devices
Which type of message does CDP use to discover neighboring devices?
CDP advertisement message
What is the default interval for CDP advertisement messages?
Every 60 seconds
Fill in the blank: CDP uses ____________ to share information about a device.
TLVs (Type, Length, Value)
How can CDP be disabled on a Cisco device?
Using the ‘no cdp run’ command
What command is used to view CDP information on a Cisco device?
show cdp neighbors
What information does a CDP neighbor table provide?
Details about neighboring Cisco devices
Which command is used to enable CDP on a Cisco device interface?
cdp enable
What is the purpose of the ‘cdp holdtime’ command?
To adjust the holdtime for CDP advertisements
What is the default holdtime for CDP advertisements?
180 seconds
True or False: CDP is a layer 3 protocol.
False
What information does a CDP cache store?
Information about neighboring devices
What is the purpose of the ‘cdp timer’ command?
To adjust the frequency of CDP advertisements
How can CDP be used for network troubleshooting?
By providing information about neighboring devices and connections
What is the main benefit of using CDP in a network?
Simplified network management
Which command is used to disable CDP globally on a Cisco device?
no cdp run
What is the maximum number of CDP neighbors that can be discovered by a Cisco device?
255
What is the purpose of the ‘show cdp neighbors detail’ command?
To display detailed information about CDP neighbors
True or False: CDP is enabled by default on Cisco devices.
True
What does the ‘no cdp enable’ command do on a Cisco device interface?
Disables CDP on the specified interface
