What is the reason the IS-IS adjacency fails?

Posted by: Pdfprep Category: JN0-360 Tags: , ,

Click the Exhibit button.

— Exhibit —

user@R1> show

interfaces {

ge-1/1/0 {

unit 0 {

family inet {

address 10.100.1.1/30;

}

family iso;

}

}

lo0 {

unit 0 {

family inet {

address 10.100.10.1/32;

}

family iso {

address 49.1001.0010.0100.00;

}

}

}

}

protocols {

isis {

level 1 disable;

interface ge-1/1/0.0 {

level 2 disable;

}

interface lo0.0;

}

}

user@R2> show

interfaces {

ge-1/1/0 {

unit 0 {

family inet {

address 10.100.1.2/30;

}

family iso {

mtu 1496;

}

}

}

lo0 {

unit 0 {

family inet {

address 10.100.10.2/32;

}

family iso {

address 49.1002.0010.0200.00;

}

}

}

}

protocols {

isis {

interface ge-1/1/0.0 {

level 2 disable;

}

interface lo0.0;

}

}

— Exhibit —

Referring to the exhibit, R1 and R2 are directly connected using interface ge-1/1/0.

What is the reason the IS-IS adjacency fails?
A . R2 has an MTU value of 1496 configured on ge-1/1/0.
B . R2 and R1 have different area IDs.
C . R1 is configured for Level 2, and R2 is configured for Level 1.
D . R1 is configured for both Level 1 and Level 2 to be disabled.

Answer: B

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