— Exhibit —

[edit interfaces ge-0/0/1]

user@router# show

unit 100 {

vlan-id 100;

family inet {

address 10.1.1.1 /24;

}

}

[edit interfaces ge-0/0/1]

user@router# commit check

[edit interfaces ge-0/0/1]

unit 100

Only unit 0 is valid for

this encapsulation

error: configuration check-out failed

— Exhibit —

Referring to the exhibit, you are unable to commit the configuration for the ge-0/0/1 interface.

What must you do to commit the configuration?

A. You must set the encapsulation vlan-ccc parameter under the [edit interfaces ge-0/0/1 unit 100] hierarchy.

B. You must set the vlan-tagging parameter under the [edit interfaces ge-0/0/1] hierarchy.

C. You must use the rename command to change unit 100 to unit 0.

D. You must set the encapsulation flexible-ethernet-services parameter under the [edit interfaces ge-0/0/1] hierarchy.