JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 21

-- Exhibit --
protocols {
isis {
level 1 disable;
interface ge-1/0/0.0 {
level 2 disable;
}
interface ge-1/1/0.0;
interface lo0.0;
}
}
-- Exhibit --
Click the Exhibit button.
Referring to the exhibit, what is the resulting behavior on interface ge-1/0/0?

Answer options

• A. Level 1 is enabled.
• B. Level 1 is disabled.
• C. Level 2 is enabled.
• D. Level 1 and Level 2 are disabled.

Correct answer: A

Explanation

The configuration explicitly states 'level 1 disable;' for the IS-IS protocol on ge-1/0/0, which means Level 1 is turned off, leading to the conclusion that Level 1 is disabled. Options C and D do not apply as they do not accurately reflect the settings for Level 1 and Level 2 on the specified interface.