Juniper JN0-105 Exam - Topic 1 Question 1 Discussion

Actual exam question for Juniper's JN0-105 exam

Question #: 1
Topic #: 1

[All JN0-105 Questions]

Exhibit

[edit]

user@routerl set interfaces ge-0/1/2 unit 0 family inet address 172.16.101.1/24 [edit]

user@router# commit check

configuration check succeeds

[edit]

user@router#

You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered 172.16.101.1/24 as shown in the exhibit.

Which command should you issue to solve the problem?

A(edit] user@router# rollback 1

B[edit] user@router# rollback 2

C[edit] userOrouter# rollback 0

D[edit] user@routeri rollback rescue

Show Suggested Answer

Suggested Answer: A

If you've committed a configuration and then need to revert to the previous configuration, the rollback command is used. Since the incorrect IP address has not been committed, as indicated by the commit check command being successful, issuing rollback 1 will undo the changes made in the current session, which includes the accidental entry of the IP address.

by Brandon at Mar 10, 2024, 12:59 PM

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Ressie

3 months ago

Rollback 1 should fix it, no doubt!

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Franklyn

3 months ago

Wait, rollback rescue? Is that even a thing?

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Mozell

3 months ago

Not sure about that, rollback 0 might be better.

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Michel

4 months ago

I think rollback 1 is the right move here.

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Craig

4 months ago

You need to change the IP to 172.16.100.1/24.

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Ma

4 months ago

I’m leaning towards rollback rescue, but I’m not confident it’s the best option here.

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Corinne

4 months ago

I feel like I saw a similar question where rollback 0 was the answer, but that might just reset everything.

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Ellen

4 months ago

I think rollback 1 is the right choice since it should revert to the last configuration before the mistake.

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Malcom

5 months ago

I remember practicing rollback commands, but I'm not sure which rollback number corresponds to the last change.

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Sol

5 months ago

Hmm, I'm not sure about this. The options all mention "rollback", but the question doesn't explicitly say we need to use that command. I'm going to double-check the exhibit and the question to make sure I'm not missing something.

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Lenita

5 months ago

I'm feeling pretty confident about this one. The key is that the configuration check succeeded, so we don't need to do a full rollback. Option A, "rollback 1", should undo the last change and let us set the correct IP address.

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Tyra

5 months ago

Okay, I think I've got this. The exhibit shows that the IP address was accidentally set to 172.16.101.1/24, but the question says we need to set it to 172.16.100.1/24. So I'm pretty sure the answer is option A, "rollback 1".

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Quentin

5 months ago

Hmm, this looks tricky. I'll need to carefully review the exhibit and the question to figure out the right command to use.

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Darell

5 months ago

I'm a little confused here. The question mentions that the configuration check succeeded, so I'm not sure if a rollback is the right approach. Maybe there's a more direct way to change the IP address?

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Celia

5 months ago

I'm a bit confused by the options here. I'll have to review my notes on standards organizations before answering this.

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Tu

5 months ago

I'm not sure if it's "more" or "less" for the second part, but I think we practiced a similar question where income didn't keep up with rising prices.

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