Which commands would you use to determine the IP address and hostname of a directly connected switch from which you received VLAN information? (Choose
two. Each correct answer is part of the solution.)

A.
show vtp status

B.
show cdp neighbors detail

C.
show cdp neighbor status

D.
show vtp counters

E.
show cdp neighbor

Explanation:
The VLAN Trunking Protocol (VTP) is used to synchronize VLANs between switches, and the question implies that VTP is being used in this environment. The show

vtp status command will display the IP address ofthe switch that last updated your VLAN database. The output of this command is as follows:
Switch# show vtp status
VTP Version : 2
Configuration Revision : 247
Maximum VLANs supported locally : 1005
Number of existing VLANs : 33
VTP Operating Mode :Server
VTP Domain Name : Lab_Network
VTP Pruning Mode : Enabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x45 0x52 0xB6 0xFD 0x63 0xC8 0x49 0x80
Configuration last modified by 10.1.1.2 at 8-12-99 15:04:49
<output omitted>
The “Configuration last modified by 10.1.1.2” output reveals the IP address of the switch from which you received VLAN information. Once you know the IP address
of the switch, you can use the show cdp neighbors detail command to determine the hostname associated with this IP address. The output of this command is as
follows:
switch# show cdp neighbors detail
Device ID: RouterB
Entry address(es):
IP address: 172.20.52.254
Platform: cisco 2621, Capabilities: Router
Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/0
Holdtime: 120 sec
<<output omitted>>
————————————————-
Device ID: SwitchB
Entry address(es):
IP address: 10.1.1.2
Platform: cisco WS-C2950G-24, Capabilities: Switch IGMP
Interface: FastEthernet0/4, PortID (outgoing port): FastEthernet0/24
Holdtime: 101 sec
<<output omitted>>
The show cdp neighbors detail command provides detailed information about directly connected Cisco devices. The detail option is required to provide the IP
address of the neighboring devices, and indicates here that IP address 10.1.1.2 is assigned to Device ID: SwitchB, which is the hostname for this device. SwitchB is
the switch from which you received VLANs.

Although not offered as an option, the show cdp entry* command will also display all directly connected devices and will indicate the hostname and the IP address
and platform, but will not indicate from which device VTP information was received. Its output is shown below:
switch#show cdp entry*
————————-
Device ID: SwitchB
Entry address(es):
IP address: 10.1.1.2
Platform: cisco WS-C2950G-24, Capabilities: Switch IGMP
Interface: FastEthernet0/4, Port ID (outgoing port): FastEthernet0/24
Holdtime: 101 sec
<<output omitted>>
This command displays the same information as the show cdp neighbor detail command. It includes:
– The IP address of the neighbor (in this case 10.1.1.2)
– The port on which the CDP information was received (in this case FastEthernet0/4)
– The platform (in this case a Cisco WS-C2950G-24 Switch)
The show vtp counters command is incorrect because it does not display information about neighboring devices, nor information regarding from which switch
VLANs were received.
The show cdp neighbor command is incorrect because the detail option is required to display the IP addresses of neighboring devices.
The show cdp neighbor status command is incorrect because this is not a valid Cisco IOS command.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot VLANs (normal range) spanning multiple switches

https://www.cisco.com/c/en/us/td/docs/ios/redirect/eol.html
https://www.cisco.com/c/en/us/products/switches/catalyst-6500-series-switches/eos-eol-notice-listing.html