Juniper JN0-105 Online Practice Questions and Exam Preparation

Juniper JN0-105 Online Questions & Answers

• Question 141:

  Which two statements are true about the candidate configuration? (Choose two.)

  A. You can discard changes before committing them.
  B. You can deploy multiple changes at the same time.
  C. Multiple users cannot modify the same candidate configuration.
  D. Candidate configuration changes are automatically applied.
  A. You can discard changes before committing them.
  B. You can deploy multiple changes at the same time.

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  Explanation

  The candidate configuration in Junos OS is a temporary configuration that allows network administrators to make and stage multiple configuration changes before applying them to the device. This approach enables the deployment of multiple changes in a single operation, ensuring that all configurations work together as intended before making them active. Additionally, the candidate configuration can be discarded if the administrator decides not to apply the staged changes, allowing for a "trial and error" approach without affecting the currently active configuration. This feature provides flexibility and reduces the risk of disruptive changes to the network.

• Question 142:

  Which two statements about route preference in Junos are correct? (Choose two.)

  A. Both direct and static routes have the same preference.
  B. Both direct and local routes have the same preference.
  C. Both OSPF internal and OSPF AS external routes have the same preference.
  D. Both EBGP and IBGP routes have the same preference.
  B. Both direct and local routes have the same preference.
  C. Both OSPF internal and OSPF AS external routes have the same preference.

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  Explanation

  In Junos OS, route preference (also known as administrative distance) is used to determine the preferred route among multiple routes to the same destination learned via different routing protocols. Direct and local routes, which represent directly connected networks and interfaces, typically share the same low preference value, indicating high trustworthiness because they are directly connected to the router. OSPF internal routes (routes within the same OSPF area) and OSPF AS external routes (routes that are external to the OSPF autonomous system but redistributed into OSPF) also share the same preference value, although this value is higher (indicating less trust) than for direct and local routes. This distinction helps the routing engine decide which routes to use when multiple paths are available.

• Question 143:

  Click the Exhibit button.

  

  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 rescue
  B. [edit] user@router# rollback 1
  C. [edit] user@router# rollback 0
  D. [edit] user@router# rollback 2
  B. [edit] user@router# rollback 1

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  Explanation

  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.

• Question 144:

  You must verify that interface ge-0/0/0.0 is administratively up and that the link is up.

  In this scenario, which command will accomplish this task?

  A. show configuration interfaces ge-0/0/0.0
  B. show chassis fpc pic-status
  C. show system information
  D. show interfaces terse
  D. show interfaces terse

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  Explanation

  Ref: show interfaces | Junos OS | Juniper Networks "show interfaces ... Sample Output ... show interfaces terse user@host> show interfaces terse Interface Admin Link Proto Local Remote ge-0/0/0 up up ge-0/0/0.0 up up inet 10.209.4.61/18 gr-0/0/0 up up ..."