JN0-102 · Question #49
Which three commands will cause a logical interface to go administratively down after being committed? (Choose three.)
The correct answer is B. deactivate C. disable E. delete. In Junos OS, an interface can be administratively brought down by using the deactivate, disable, or delete configuration commands, which prevent the interface from passing traffic after committing the changes.
Question
Which three commands will cause a logical interface to go administratively down after being committed? (Choose three.)
Options
- Ashutdown
- Bdeactivate
- Cdisable
- Ddown
- Edelete
How the community answered
(34 responses)- A18% (6)
- B74% (25)
- D9% (3)
Why each option
In Junos OS, an interface can be administratively brought down by using the `deactivate`, `disable`, or `delete` configuration commands, which prevent the interface from passing traffic after committing the changes.
The `shutdown` command is commonly used in other networking operating systems but is not the standard Junos OS command for administratively taking an interface down; `disable` or `deactivate` are used instead.
The `deactivate` command comments out a configuration statement, making it inactive while still present in the configuration, effectively bringing the interface down.
The `disable` command is a specific configuration option for an interface or other components that explicitly puts them in an administratively down state.
The `down` command is not a valid Junos OS configuration command to administratively bring an interface down.
The `delete` command removes the interface configuration entirely from the candidate configuration, causing the interface to cease functioning once committed.
Concept tested: Junos interface administrative state commands
Source: https://www.juniper.net/documentation/us/en/software/junos/interfaces-basics/topics/ref/statement/disable-edit-interfaces-interface-unit.html
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