nerdexam
Juniper

JN0-102 · Question #84

You are troubleshooting a routing issue and need to check the hop-by-hop path to the 10.10.10.10 destination. Which three commands would display the path? (Choose three.)

The correct answer is B. user@router> ping record-route 10.10.10.10 C. user@router>traceroute 10.10.10.10 D. user@router# run traceroute 10.10.10.10. To check the hop-by-hop path to a destination in Junos, use the traceroute command or the ping record-route command from operational mode, or run traceroute from configuration mode.

Operational Monitoring and Maintenance

Question

You are troubleshooting a routing issue and need to check the hop-by-hop path to the 10.10.10.10 destination. Which three commands would display the path? (Choose three.)

Options

  • Auser@router# traceroute 10.10.10.10
  • Buser@router> ping record-route 10.10.10.10
  • Cuser@router>traceroute 10.10.10.10
  • Duser@router# run traceroute 10.10.10.10
  • Euser@router# ping record-route 10.10.10.10

How the community answered

(38 responses)
  • A
    5% (2)
  • B
    92% (35)
  • E
    3% (1)

Why each option

To check the hop-by-hop path to a destination in Junos, use the `traceroute` command or the `ping record-route` command from operational mode, or `run traceroute` from configuration mode.

Auser@router# traceroute 10.10.10.10

`user@router# traceroute 10.10.10.10` is incorrect because `traceroute` is an operational command and cannot be run directly from configuration mode without the `run` keyword.

Buser@router> ping record-route 10.10.10.10Correct

The `ping record-route` command, executed from operational mode, attempts to record the path taken by the ICMP echo requests, showing up to nine intermediate hops if supported by network devices.

Cuser@router>traceroute 10.10.10.10Correct

The `traceroute 10.10.10.10` command, issued from the operational mode (`>`), is the standard Junos command for displaying the hop-by-hop path and latency to a destination.

Duser@router# run traceroute 10.10.10.10Correct

The `run traceroute 10.10.10.10` command executed from configuration mode (`#`) allows you to execute an operational mode command, such as `traceroute`, directly without exiting configuration mode.

Euser@router# ping record-route 10.10.10.10

`user@router# ping record-route 10.10.10.10` is incorrect because `ping` is an operational command and cannot be run directly from configuration mode without the `run` keyword.

Concept tested: Junos troubleshooting commands for path tracing

Source: https://www.juniper.net/documentation/us/en/software/junos/junos-os-fundamentals/topics/ref/command/traceroute.html

Topics

#traceroute#ping record-route#hop-by-hop path#troubleshooting

Community Discussion

No community discussion yet for this question.

Full JN0-102 Practice