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Click the Exhibit button. user@R1# show interfaces lo0 unit 0 { family inet { address 10.220.1.1/32; } family iso { address 49.0001.0010.0220.0101.00; } } {edit protocols isis} user@R1# show interface ge-1/0/1.0 { level 2 disable; } interface ge-1/1/0.0 { level 1 disable; } interface ge-1/1/1.0 { level 2 disable; } interface lo0.0; user@R7# show interfaces lo0 unit 0 { family inet { address 10.220.1.7/32; } family iso { address 49.0002.0010.0220.0107.00; } } {edit protocols isis] user@R7 show interface ge-1/0/1.0 { level 2 disable; } interface lo0.0 You are trying to establish an IS-IS Level 1 adjacency over ge-1/0/1 between R1 and R7 without impacting the other IS-IS adjacencies on R1. Which configuration change would satisfy this requirement?
Correct Answer: B
Explanation/Reference: Level 1 adjacencies can be formed between routers that share a common area number, while a Level 2 adjacency can be formed between routers that might or might not share an area number. References: https://www.juniper.net/techpubs/en_US/junos16.1/topics/example/isis-multi-level.html