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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | JNCIA-Junos (Junos, Associate) Exam |
| Exam Number: | JN0-106 |
| Exam Format: | Multiple choice, Scenario-based questions |
| Passing Score: | Approximately 60–70% (exact score not publicly fixed) |
| Certificate Validity Period: | 3 years |
| Exam Price: | $200 USD (may vary by region) |
| Real Exam Qty: | Approximately 65 multiple-choice questions |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Related Certifications: | JNCIS-Junos JNCIP-Junos JNCIE-Junos |
| Recommended Training: | Juniper Official JNCIA-Junos Training Juniper Day One Books (Junos Fundamentals) |
| Exam Registration: | Pearson VUE Exam Registration Juniper Certification Portal |
| Sample Questions: | Juniper JN0-106 Sample Questions |
| Exam Way: | Computer-based testing at authorized testing centers or online proctored exam (availability may vary by region). |
| Pre Condition: | No formal prerequisites required; basic networking knowledge recommended. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/certification-tracks/junos-certification-track.html |
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NEW QUESTION # 39
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
Explanation:
Junos OS supports several methods for automatically archiving configurations upon commit. The supported methods are:
A). SCP (Secure Copy Protocol): SCP is a secure method for transferring files, including configurations, between devices. It is supported by Junos OS for archiving configurations after each commit.
C). FTP (File Transfer Protocol): FTP can also be used for transferring and archiving files, including configurations, after a commit in Junos OS.
NEW QUESTION # 40
Which statement is correct about traffic flow in the network shown in the exhibit?
Answer: B
Explanation:
The configuration exhibit demonstrates a classic scenario where mismatched static routing leads to a routing loop . Router R1 is configured with a default route ( 0.0.0.0/0 ) pointing to R2 as its next hop. Conversely, R2 is configured with a broad static route for 10.1.0.0/16 pointing back to R1 .
If a user sends a packet to an unassigned IP address such as 10.1.99.1 , the following sequence occurs:
* R1 receives the packet and consults its routing table. Finding no specific match for the 10.1.99.1 host, it uses the default route and forwards the packet to R2 .
* R2 receives the packet and identifies that 10.1.99.1 falls within its defined static route for 10.1.0.0/16 .
* Following its configuration, R2 forwards the packet back to R1 . This process repeats indefinitely-or until the packet ' s Time to Live (TTL) reaches zero-because the broad summary on R2 encompasses addresses that R1 does not actually have a local path for. This illustrates the critical importance of ensuring that summary routes or default routes do not overlap in a way that creates circular forwarding paths for non-existent destinations. Reference: Routing Fundamentals, Static Route Configuration, Routing Loops and TTL.
NEW QUESTION # 41
You want to automatically back up your Junos device configuration to an external server every time you commit a configuration change. In this scenario, which command would accomplish this task?
Answer: C
Explanation:
Junos OS provides robust automation features for configuration management, specifically through the system archival utility. When an administrator needs to ensure that every successful configuration change is mirrored to an off-box repository for disaster recovery or auditing, the transfer-on-commit statement is the appropriate tool. This command instructs the Junos device to initiate an automated upload process immediately following the validation and activation of a commit command.
To fully implement this, the administrator must also define the archive-sites, which specify the destination URIs (using protocols such as FTP, SCP, or HTTP) and the necessary credentials for the external server. While transfer-interval can be used to back up configurations on a chronological schedule (e.g., every 60 minutes), transfer-on-commit is superior for tracking specific change events as they happen. This ensures that the external backup is always synchronized with the current active configuration on the device. Once configured, the device handles the background transfer, allowing the administrator to maintain a historical record of configuration states without manual intervention, which is essential for large-scale operational environments.
NEW QUESTION # 42
Click the Exhibit button.
Referring to the exhibit, which two actions will occur when a packet matches the firewall filter? (Choose two.)
Answer: A,B
Explanation:
In Junos OS, firewall filters are constructed using terms that specify match criteria (the from statement) and actions to be taken (the then statement). When a packet enters an interface where this filter is applied, the Packet Forwarding Engine (PFE) evaluates it against the defined terms. In this exhibit, the term limit-icmp targets packets sourced from the 172.25.11.0/24 network that specifically use the ICMP protocol.
When a packet meets both criteria, the actions defined in the then block are triggered:
* count count-icmp; : This is a non-terminating action . It instructs the system to increment a specific software counter named count-icmp. This allows administrators to monitor exactly how many packets are hitting this specific term using the show firewall command.
* discard; : This is a terminating action . It immediately stops any further evaluation of the packet and drops it. A key characteristic of the discard action in Junos is that it is a " silent " drop; the router simply deletes the packet from its buffer without notifying the sender.
Option D is incorrect because returning an ICMP destination unreachable message is the specific behavior of the reject action, not the discard action. Option C is incorrect because discard explicitly prevents the packet from being forwarded. Understanding the distinction between silent discards and active rejections is essential for architects when designing security policies that balance stealth with network transparency.
Reference: Routing Policy and Firewall Filters, Firewall Filter Actions, Standard Firewall Filters.
NEW QUESTION # 43
Exhibit:
You have configured multiple authentication methods on your Junos device, including RADIUS, TACACS+, and local user accounts. A user attempts to log in, but the RADIUS server is unavailable. Referring to the exhibit, which statement is correct?
Answer: C
Explanation:
In the Junos OS architecture, the authentication-order statement within the [edit system] hierarchy defines the sequence in which the device attempts to validate user credentials against external and internal databases. The order specified in the exhibit is [ radius tacplus password ] , meaning the device first queries the RADIUS server, followed by the TACACS+ server, and finally the local password database.
A critical distinction in Junos authentication logic is the difference between a server being " unavailable " and a server " rejecting " a user. If an authentication server responds with an explicit access-reject (meaning it received the request but the credentials were invalid), the authentication process terminates immediately to maintain security integrity. However, if the server is unreachable or fails to respond within the configured timeout period (unavailable), the Junos Control Plane automatically falls back to the next method in the defined sequence. In this specific scenario, since the RADIUS server is unavailable, the device will proceed to attempt authentication using the TACACS+ server. If that were also unavailable, it would finally check the local password database. This fallback mechanism ensures that administrators can still access the device even during external server outages, provided they have a local account configured as the final method in the list.
Reference: User Interfaces, System Authentication, Authentication Order and Fallback.
NEW QUESTION # 44
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