Juniper JN0-105 Junos, Associate Exam Practice Test

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Total 100 questions
Question 1

You are trying to diagnose packet loss at interface ge-0/0/3.

In this scenario, which command would help you view error statistics in real time?



Answer : D

The monitor interface ge-0/0/3 command is used in Junos OS to view real-time statistics for a specific interface. This command helps in diagnosing issues like packet loss by displaying real-time updates of traffic and error statistics for the specified interface.


Question 2

You issue the telnet 10.10.10.1 source 192.168.100.1 command.

Which two statements are correct in this scenario? (Choose two.)



Answer : C, D

In the given telnet command, 'telnet 10.10.10.1 source 192.168.100.1,' the destination address of the telnet session is 10.10.10.1, and the source address of the session is specified as 192.168.100.1, making C and D the correct answers. This command instructs the telnet client to use the specified source IP address when establishing the connection to the destination.


Question 3

What information would you find using the CLI help command?



Answer : C

The CLI help command in Junos OS provides assistance and explanations for commands, command options, and in some cases, specific system log error messages. By using the help command followed by specific keywords or messages, users can get detailed information and context for the commands they are using or errors they are encountering. This feature is particularly useful for understanding the purpose of commands, their syntax, and troubleshooting error messages that may appear in system logs.


Question 4

You want to find out the chassis serial number of a Junos device.

Which command would display this information?



Answer : B

The show chassis hardware command in Junos OS displays detailed information about the hardware installed in the device, including the chassis itself. This command provides a list of all hardware components, their serial numbers, part numbers, and version information. When looking for the chassis serial number specifically, this command is the most direct and comprehensive way to retrieve that information, as it includes the serial number of the chassis among the details provided.


Question 5

What are two examples of exception traffic? (Choose two.)



Answer : B, C

Exception traffic includes traffic that is not simply forwarded by the router but requires special handling, such as routing updates (B) and log messages (C). These types of traffic are processed by the router's control plane rather than just being forwarded through the data plane.


Question 6

Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?



Answer : B

In Junos OS, a policer is a feature used to limit the rate of traffic flow in the network, including exception traffic sent from the Packet Forwarding Engine (PFE) to the Routing Engine (RE). Exception traffic consists of packets that cannot be processed by the PFE alone and require intervention by the RE, such as control packets or packets destined for the device itself. A policer can be configured to enforce bandwidth limits and drop or mark packets that exceed specified rate limits, thus protecting the RE from being overwhelmed by excessive exception traffic.


Question 7

You are asked to configure your device running Junos OS to automatically archive your configuration upon commit

In this scenario, which two methods are supported by the Junos OS? (Choose two)



Answer : A, B

Junos OS supports multiple methods for automatically archiving configurations upon commit. Two of the supported methods are SCP (Secure Copy Protocol) and RCP (Remote Copy Protocol). These methods can be configured to save the configuration files to a remote server automatically whenever a commit is made.


'You can configure Junos OS to automatically archive the configuration using protocols such as SCP and RCP upon commit.'

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Total 100 questions