Implementing Cisco IP Switched Networks (CCNP SWITCH, legacy) — Question 140

Which command enables root guard on a cisco switch?

Answer options

• A. switch(config-if)# spanning-tree guard root
• B. switch(config)# spanning-tree guard root
• C. switch(config-if)# spanning-tree guard-root
• D. switch(config)# spanning-tree root guard
• E. switch(config-if)# spanning-tree root guard A

Correct answer:

Explanation

The correct command to enable root guard on a Cisco switch is 'switch(config)# spanning-tree root guard' (option D). Other options either specify the command incorrectly or are in the wrong configuration mode. For instance, option A and C are missing the proper syntax, and options B and E are not executed in the correct context.