Real Juniper JN0-105 Exam Questions [Updated 2025]
JN0-105 Exam Dumps Pass with Updated 2025 Junos, Associate (JNCIA-Junos)
NEW QUESTION # 37
Which two statements apply to the Routing Engine functions? (Choose two.)
- A. It does not process routing updates.
- B. It processes the transit traffic.
- C. It maintains the routing tables.
- D. It responds to ping and traceroute commands.
Answer: C,D
Explanation:
The Routing Engine (RE) in Juniper Networks devices plays a critical role in the control plane operations. One of its functions includes responding to network utility commands like ping and traceroute, which are essential for diagnosing network connectivity and path issues. Furthermore, the RE is responsible for maintaining the routing tables, which contain information about network paths and destinations. These tables are vital for making forwarding decisions but are distinct from the actual forwarding of packets, which is handled by the Packet Forwarding Engine (PFE).
NEW QUESTION # 38
Click the Exhibit button.
Referring the exhibit, what does the highlighted number indicate?
- A. metric is 5
- B. hop count is 5
- C. cost is 5
- D. route preference is 5
Answer: D
Explanation:
In the exhibit shown, the highlighted number next to the route type (Static) within the square brackets indicates the route preference, also known as the administrative distance. In Junos, the route preference is a value that determines the priority of the route source. Lower numbers indicate a higher priority when the routing table is being calculated. The route preference is used to select the best route when multiple paths to the same destination exist from different routing sources. The number 5 is unusually low for a static route by default, suggesting it has been manually configured to override other route types.
NEW QUESTION # 39
Exhibit.
Referring to the exhibit, which routing configuration is required for these two users to access the remote server?
- A. Trunk ports must be enabled on the switch.
- B. Users must connect directly to the router.
- C. Users and the server require a default gateway.
- D. A routing protocol must be enabled on the router.
Answer: C
Explanation:
For the users in the 10.1.1.0/24 subnet and the server in the 10.1.2.0/24 subnet to communicate with each other, they need to route packets through the router that connects these two subnets. Each user and the server need to have their default gateway set to the IP address of the router interface on their respective subnet (.254). This ensures that packets destined for other subnets are sent to the router, which then routes them to the correct destination subnet.
Reference:
Juniper official documentation: Configuring Basic Routing.
General networking principles.
NEW QUESTION # 40
Exhibit
policy-options { policy-statement Load-Balance-Policy { term Load-Balance { then { load-balance per-flow; accept;
}
}
}
}
routing-options {
router-id 192.168.100.11; autonomous-system 65201; forwarding-table {
export Load-Balance-Policy;
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The policy enables equal cost load balancing in the forwarding table.
- B. The policy enables flow-based load balancing.
- C. The policy must be applied under the protocols hierarchy.
- D. The policy enables per-packet load balancing.
Answer: A
Explanation:
Theload-balance per-flowstatement in the Junos OS policy-options configuration enables flow-based load balancing in the forwarding table. This means that the traffic is distributed across multiple paths based on flows, where a flow is typically identified by attributes such as source and destination IP addresses, and possibly layer 4 information like TCP/UDP ports. This allows for more granular and efficient utilization of available paths, avoiding overloading a single path. The policy does not enable per-packet load balancing, which would send individual packets of the same flow over different paths, potentially causing out-of-order delivery issues. The policy's placement in theforwarding-tableexport suggests it's intended to influence forwarding behavior, not just routing protocol decisions, and does not necessarily have to be applied under the protocols hierarchy.
NEW QUESTION # 41
You are configuring a firewall filter on a Juniper device.
In this scenario, what are two valid terminating actions? (Choose two.)
- A. 4accept
- B. 1 count
- C. 2discarD
- D. 3next term
Answer: A,C
Explanation:
In Juniper firewall filter configurations, "discard" and "accept" are two valid terminating actions for a term within a filter. The "discard" action drops the packet, preventing it from reaching its intended destination, while the "accept" action allows the packet to pass through the filter, proceeding to its next hop or destination.
"Count" is a non-terminating action that increments a counter every time a packet matches the term but does not inherently determine the packet's fate. "Next term" directs the evaluation to proceed to the next term in the filter for further processing, also a non-terminating action.
NEW QUESTION # 42
What will the request system configuration rescue save command do?
- A. It activates the rescue configuration.
- B. It saves the candidate configuration as the rescue configuration.
- C. It saves the most recently committed configuration as the rescue configuration.
- D. It saves a configuration version prior to the configuration most recently committed as the rescue configuration.
Answer: C
Explanation:
The request system configuration rescue save command in Junos OS saves the most recently committed configuration as the rescue configuration. This rescue configuration can be used to recover the device if future configurations cause issues. It ensures there is a stable, known-good configuration to fall back on, which is crucial in network management and troubleshooting.
References:
* "rescue : save configurations as the rescue: request system configuration save .................( saves the current configs as a rescue configs )" from Useful Juniper Commands.txt.
* Juniper official documentation: Configuring and Activating a Rescue Configuration.
NEW QUESTION # 43
Which two statements describe the result when you enter? at the command-line prompt? (Choose two.)
- A. It displays help about a text string contained in a statement.
- B. It displays summary information about the commands and options.
- C. It lists tips for the help menu.
- D. It lists the available commands and options.
Answer: B,D
Explanation:
When you enter ? at the command-line prompt in Junos OS, the system provides assistance in two significant ways. Firstly, it lists the available commands and options that can be used at the current point in the command hierarchy, aiding users in understanding what commands they can execute next. Secondly, it displays summary information about those commands and options, providing brief descriptions or additional context that can help users understand the function of each command or option. This feature is particularly useful for learning the command structure or for quick reference when specific command syntax is forgotten.
NEW QUESTION # 44
Which prompt indicates that you are using configuration mode?
- A. #
- B. %
- C. >
- D. $
Answer: A
Explanation:
In Junos OS, the # prompt indicates that you are in configuration mode. This mode is used for making changes to the configuration of the device.
Reference:
"The # prompt indicates that you are in configuration mode."
NEW QUESTION # 45
You configured your system authentication order using the set authentication-order tacplus radius password command.
Which statement is correct in this scenario?
- A. A rejection by TACACS+ will prevent a login and bypass the other two authentication methods.
- B. The password authentication will only be used if the TACACS+ and RADIUS servers fail to respond.
- C. All authentication methods are used with the most restrictive permission set used.
- D. The password authentication method is evaluated if the TACACS+ and RADIUS servers respond with a reject message.
Answer: B
Explanation:
In the scenario where the system authentication order is set to "tacplus radius password," the correct statement is (B). If the TACACS+ and RADIUS servers are unreachable or fail to respond, the system will fall back to using password authentication. This ensures that users can still authenticate using locally stored passwords if external authentication servers are unavailable.
NEW QUESTION # 46
You received a new Junos device and are configuring the system-related settings. You must configure this device for the current date and time on the US West coast. You have set the time zone to America
/Los_Angeies. however the time and date did not change.
In this scenario, which two additional actions would satisfy this requirement? (Choose two.)
- A. Set the date and time setting manually.
- B. Reboot the device.
- C. Configure a DNS server.
- D. Configure an NTP server.
Answer: A,D
Explanation:
When configuring the system-related settings for the current date and time on a Junos device, especially for a specific time zone like America/Los_Angeles, and the time does not automatically adjust, two effective actions can be taken. Firstly, setting the date and time manually allows for immediate correction of the system clock. This can be done via the CLI with the appropriate set date and time command. Secondly, configuring the device to use an NTP server can provide ongoing synchronization with an accurate time source, ensuring that the device maintains the correct time and date automatically in the future, even in the case of restarts or minor drifts in the internal clock.
NEW QUESTION # 47
What is the protocol data unit (PDU) of the Data Link Layer?
- A. bit
- B. segment
- C. byte
- D. frame
Answer: D
Explanation:
In the OSI model, the Data Link Layer is responsible for node-to-node delivery of data. It frames the packets received from the Network Layer and prepares them for physical transmission. The Protocol Data Unit (PDU) for the Data Link Layer is called a "frame." Frames encapsulate the network layer packets, adding a header and a trailer that include the hardware addresses of the source and destination, among other things, facilitating the data link layer services like frame synchronization, flow control, and error checking.
NEW QUESTION # 48
Exhibit
Exhibit
[edit]
root# set system host-name TEST_DEVICE [edit]
root# commit
[edit]
'system'
Missing mandatory statement: 'root-authentication' error: commit failed: (missing mandatory statements)
[edit] root#
You are configuring a new device.
Which action solves the error shown in the exhibit?
- A. configuring a password for the root account
- B. reinstalling Junos
- C. loading the factory-default configuration
- D. configuring a non-root username and password
Answer: A
Explanation:
The error message in the exhibit indicates that the root-authentication statement is missing, which is mandatory for committing the configuration. In Junos OS, it is required to set a password for the root account to commit any configuration changes. This is a security measure to ensure that unauthorized users cannot access the device's configuration mode. To solve the error shown in the exhibit, configuring a password for the root account is necessary. This can be done by using theset system root-authentication plain-text-password command, after which the user will be prompted to enter a new password for the root account.
NEW QUESTION # 49
When considering routing tables and forwarding tables, which two statements are correct? (Choose two.)
- A. The forwarding table is used by the RE to select the best route.
- B. The forwarding table stores all routes and prefixes from all protocols.
- C. The routing table stores all routes and prefixes from all protocols.
- D. The routing table is used by the RE to select the best route.
Answer: C,D
Explanation:
The routing table and forwarding table play distinct roles in a Junos OS device. The correct answers are A and D. The routing table (A) is used by the Routing Engine (RE) to select the best route among all the learned routes, while the routing table (D) stores all routes and prefixes learned from all routing protocols. The forwarding table, in contrast, contains only the active routes chosen by the RE and is used by the Packet Forwarding Engine for actual packet forwarding.
NEW QUESTION # 50
Click the Exhibit button.
Referring to the exhibit, OSPF has three export policies that match different static route prefixes. The
10.10.10.0/24 static route does not match any terms in the policyl routing policy.
What happens next in this scenario?
- A. Thestaticrouteisevaluated by the poiicy3 routing policy.
- B. Thestaticrouteisrejected by the default routing policy.
- C. Thestaticrouteisrejected by the policyl routing policy.
- D. Thestaticrouteisevaluated by the poiicy2 routing policy.
Answer: D
Explanation:
In Junos, when multiple policies are applied to a routing protocol for route export, the routes are evaluated in the order in which the policies are listed. In the exhibit, the OSPF configuration has three export policies listed: policy1, policy2, and policy3. The static route 10.10.10.0/24 does not match any terms in policy1; therefore, it is not rejected by policy1 but is instead passed on to the next policy in the sequence, which is policy2.
If the static route matches a term in policy2 that permits the route, it will be exported into OSPF. If it does not match in policy2, it will then be evaluated by policy3. If there is no match in policy3 as well, and assuming there are no more policies listed, the route would then be subject to the default routing policy behavior, which typically rejects the route unless an explicit accept statement is present in the policies.
NEW QUESTION # 51
What is the primary system log file that is present in the default configuration of a Junos device?
- A. vrrp
- B. messages
- C. jsrpd
- D. kmd
Answer: B
Explanation:
In the default configuration of a Junos device, the primary system log file is "messages" (B). This log file contains a wide range of system messages, including operational status changes, system errors, and other critical information, making it a key resource for troubleshooting and monitoring the system's health.
NEW QUESTION # 52
You need to recover the root password on a Junos router without losing the current configuration settings.
Which three statements describe what you should perform in this scenario? (Choose three.)
- A. Enter and commit the new root password.
- B. Use a console connection to reboot the device.
- C. Hit the space bar and enter recovery when prompted.
- D. Load the factory-default configuration.
- E. Upgrade the Junos OS to the latest version.
Answer: A,B,C
Explanation:
To recover the root password on a Junos router without losing the configuration, you should (A) enter and commit the new root password once you have gained access to the system, (D) hit the space bar to interrupt the boot process and enter recovery mode when prompted during the boot process, and (E) use a console connection to reboot the device and access the bootloader prompt. These steps allow you to reset the root password while preserving the existing configuration.
NEW QUESTION # 53
Which two statements about firewall filters are correct? (Choose two.)
- A. Firewall filters are stateless.
- B. Firewall filters are stateful.
- C. Firewall filters can match Layer 7 parameters.
- D. Firewall filters can match Layer 4 parameters.
Answer: A,D
Explanation:
Firewall filters in Junos OS are stateless, meaning they process each packet individually without regard to the state of a connection or sequence of packets. These filters can match various packet attributes, including those at Layer 4, such as TCP and UDP port numbers. This allows for granular control over traffic based on the type of service or application. Unlike stateless filters, stateful firewalls keep track of the state of active connections and make decisions based on the context of the traffic flow, which is not a capability of Junos firewall filters.
Additionally, Junosfirewall filters primarily operate up to Layer 4 and do not natively inspect Layer 7 parameters, which involve application-level data.
NEW QUESTION # 54
......
JN0-105 Exam Dumps, JN0-105 Practice Test Questions: https://www.exam4docs.com/JN0-105-study-questions.html
Free JN0-105 Exam Dumps to Pass Exam Easily: https://drive.google.com/open?id=1QTsVjo1ovEmr53GbHHULvmPWdOKF3wOy
