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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Junos, Associate (JNCIA-Junos) |
| Exam Number: | JN0-106 |
| Available Languages: | English |
| Related Certifications: | JNCIA-Junos JNCIS-ENT JNCIS-SP |
| Exam Price: | $200 USD |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 65 |
| Passing Score: | Pass or Fail |
| Exam Format: | Multiple Choice |
| Sample Questions: | Juniper JN0-106 Sample Questions |
| Exam Way: | Pearson VUE Test Center or Online Proctored Exam |
| Pre Condition: | No prerequisite certification required |
| Official Syllabus URL: | https://learningportal.juniper.net/juniper/user_activity_info.aspx?id=14354 |
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質問 # 14
After the factory default configuration is loaded, which configuration object must be created prior to the first commit?
正解：A
質問 # 15
What is the purpose of the "commit check" command in Junos OS when working within configuration mode before applying any changes to the system?
正解：D
解説：
The "commit check" command validates the configuration syntax and logic before applying it. It ensures that errors are caught early without impacting the running configuration. This is especially useful in production environments to prevent service disruptions due to incorrect configurations.
質問 # 16
Your switch01 device lost network connectivity after a configuration change. You must recover the device to a known working state using the rescue configuration that was previously saved.
The device is only accessible using the console. In this scenario, which command sequence will successfully restore the rescue configuration?
正解：C
解説：
In Junos OS, the rescue configuration is a specifically designated file that stores a known-working configuration, intended to be used for emergency recovery when the device becomes unreachable or unstable due to recent changes. This configuration is not created automatically; an administrator must proactively save a stable state using the operational mode command request system configuration rescue save. This differs from the standard rollback archive, which automatically stores up to 50 previous configurations but can eventually rotate out the specific
"last known good" state needed for recovery.
When a device loses network connectivity, console access becomes the only viable management path. To restore the rescue configuration, the administrator must enter configuration mode using the configure command. Once inside the candidate configuration buffer, the rollback rescue command is issued. This command directs the Junos OS to locate the designated rescue file and load its contents over the current candidate configuration. Upon receiving the "load complete" confirmation, the administrator must execute a commit to promote the candidate configuration to the active, running state. Sequence C correctly follows this logic. Sequence A is technically incorrect for standard rescue restoration as load override typically targets specific file paths or URLs, whereas rollback rescue is the built-in mechanism for this function. Sequences B and D are destructive or counter-productive, either deleting the rescue file or overwriting it with the current, non-functional configuration state.
質問 # 17
What are two functions of the Routing Engine? (Choose two.)
正解：C、D
解説：
The Routing Engine (RE) is the " brains " of a Juniper device, representing the control plane in the Junos dual-plane architecture. One of its primary functions is that it runs the Junos OS . The RE is essentially a high-performance workstation running a specialized version of FreeBSD that hosts the various software daemons responsible for the device ' s logic, such as the Routing Protocol Process (rpd) and the Device Control Process (dcd).
The second core function is that the RE processes all management traffic . Any packet destined for the router itself-such as an SSH session, an SNMP poll, a NETCONF request, or an NTP update-is handled by the Routing Engine ' s CPU. The RE also maintains the master routing table, manages configuration commits, and provides the CLI environment for the administrator.
It is critical to distinguish these control-plane duties from the duties of the Packet Forwarding Engine (PFE)
. The PFE is responsible for the " heavy lifting, " such as processing transit traffic (data passing through the router) and evaluating firewall filters at wire speed. While the RE defines the policies and routing tables, it hands off a streamlined version of this information to the PFE so the RE isn ' t bogged down by millions of individual packets. This separation ensures that a busy management session or a complex routing calculation on the RE doesn ' t impact the device ' s ability to forward traffic at maximum capacity.
Reference: Junos OS Fundamentals, Control Plane and Forwarding Plane.
質問 # 18
Which two statements are correct about firewall filters? (Choose two.)
正解：B、D
解説：
In Juniper Networks devices, firewall filters are used to control packet flow through the device.
The default action for packets that do not match any of the specified criteria in the firewall filter is to discard them, enhancing network security by ensuring that only explicitly allowed traffic can pass through. Furthermore, it is possible to configure multiple firewall filters on a device, allowing for granular control over traffic based on various criteria such as source, destination, and protocol type.
質問 # 19
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JN0-106日本語版参考書: https://www.certjuken.com/JN0-106-exam.html