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  3. JN0-104

Juniper JN0-104 Exam (page: 5)
Juniper Junos - Associate (JNCIA-Junos)
Updated on: 25-Dec-2025

Viewing Page 5 of 30
JN0-104 PDF 142 Questions

Which command should you use to check real-time statistics of all active interfaces?

  1. user@router> monitor traffic extensive
  2. user@router> monitor interface traffic
  3. user@router> show interface detail
  4. user@router> show interface terse

Answer(s): B

Explanation:

https://www.juniper.net/documentation/us/en/software/junos/network-mgmt/topics/topic- map/monitoring-interfaces-and-switching-functions.html



Click the Exhibit button.



UserA is currently working on routed and has issued the commands shown in the exhibit. UserB wants to update the IP address currently configured on interface xe-1/2/1.0.

What will UserB do to complete the configuration changes without interfering with UserA's work?

  1. UserB should use the configure private option to complete the changes while UserA continues with the changes.
  2. UserB should use the configure exclusive option to complete the changes while UserA continues with the changes.
  3. Use the edit command and run the commit confirmed option then proceed with UserB's changes.
  4. Wait for UserA to finish then proceed with changes using the configure private option.

Answer(s): B



Which routing instance type is used for filter-based forwarding applications?

  1. layer2-control
  2. vpls
  3. forwarding
  4. vrf

Answer(s): C

Explanation:

The forwarding routing instance type is used for filter-based forwarding applications, such as policy- based routing and traffic engineering. This type of routing instance is used when the routing table needs to contain more detailed information than what is available in the default routing table. According to the Juniper Networks Technical Certification Program (JNTCP) documents [1], the forwarding routing instance type is used for filter-based forwarding applications.



What are two functions of the transport layer? (Choose two.)

  1. data integrity
  2. segmentation
  3. flow control
  4. packet forwarding

Answer(s): B,C

Explanation:

The transport layer is responsible for ensuring the reliable delivery of data between applications running on different devices. It provides two main functions:

1. Segmentation: The transport layer is responsible for dividing large data payloads into smaller segments that can be transmitted over the network. This allows for better utilization of network resources and improved reliability, as errors in transmission can be detected and corrected more easily.

2. Flow control: The transport layer is also responsible for managing the flow of data between the sender and receiver. It monitors the receiving device's buffer capacity to ensure that it is not overwhelmed by incoming data, and can adjust the rate at which data is transmitted accordingly. This helps to prevent data loss and ensure the efficient use of network resources.

These two functions are crucial for ensuring the reliable delivery of data in a network and are provided by protocols such as TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).



You are troubleshooting a problem on your Junos device. You want to view the syslog messages in real-time on your terminal.

In this scenario, which command will accomplish this task?

  1. monitor log messages
  2. monitor start messages
  3. show log messages
  4. show log traceoptions

Answer(s): B

Explanation:

The "monitor start messages" command is used to display syslog messages in real-time on the terminal. This command provides a convenient way to monitor system events and troubleshoot problems on the device. The output of this command is sent to the console and updates in real-time as new syslog messages are generated.

To use this command, you simply enter "monitor start messages" at the CLI prompt and the syslog messages will be displayed on the terminal. To stop the display, you can press "Ctrl+C".


Reference:

Juniper Networks JNCIA-Junos Study Guide, Section 8.4 "Monitoring System Log Messages"



Viewing Page 5 of 30



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