[Apr 10, 2024] Valid JN0-105 Test Answers Full-length Practice Certification Exams
Accurate & Verified 2024 New JN0-105 Answers As Experienced in the Actual Test!
NEW QUESTION # 20
Which two statements are correct about firewall filters? (Choose two.)
- A. "Accept" is the default action of packets that are not explicitly allowed.
- B. There can be only one firewall filter.
- C. "Discard" is the default action of packets that are not explicitly allowed.
- D. There can be multiple firewall filters.
Answer: C,D
Explanation:
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.
NEW QUESTION # 21
Which protocol would you configure to synchronize the time and date on a Junos device?
- A. SNMP
- B. NMP
- C. NTP
- D. RIP
Answer: C
Explanation:
The Network Time Protocol (NTP) is designed to synchronize the clocks of computers over a network.
Configuring NTP on a Junos device ensures that its clock is set accurately, which is crucial for logging, troubleshooting, and maintaining the integrity of time-sensitive operations and security protocols. NTP allows devices to use a hierarchy of time sources, from primary servers synchronized to a reference clock (such as an atomic clock or GPS time) to secondary servers that distribute the time to other devices on the network.
NEW QUESTION # 22
When considering routing tables and forwarding tables, which two statements are correct? (Choose two.)
- A. The routing table stores all routes and prefixes from all protocols.
- B. The routing table is used by the RE to select the best route.
- C. The forwarding table stores all routes and prefixes from all protocols.
- D. The forwarding table is used by the RE to select the best route.
Answer: A,B
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 # 23
Which process in the Junos OS is responsible for maintaining routing protocols and tables?
- A. rpd
- B. dcd
- C. chassisd
- D. mgd
Answer: A
Explanation:
The Routing Protocol Daemon (rpd) in Junos OS is responsible for maintaining routing protocols and tables. It handles all routing information, including the calculation of routes and the population of the routing table, making it crucial for dynamic routing operations.
NEW QUESTION # 24
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. Upgrade the Junos OS to the latest version.
- B. Load the factory-default configuration.
- C. Use a console connection to reboot the device.
- D. Enter and commit the new root password.
- E. Hit the space bar and enter recovery when prompted.
Answer: C,D,E
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 # 25
How many login classes are assignable to a user account?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Junos OS supports multiple login classes that can be assigned to user accounts, allowing for different levels of access and permissions. The correct answer is C, 4. These classes include "super-user," "read-only,"
"operator," and "unauthorized." Each class provides a different level of access to the Junos device, ranging from full configuration and operational command privileges to limited access for monitoring and viewing configurations.
NEW QUESTION # 26
You issue the monitor traffic interface ge-0/0/0 command.
What will this command accomplish?
- A. It displays an operational summary of ge-0/0/0.
- B. It displays real-time statistics for interface ge-0/0/0.
- C. It displays the MTU and MAC address for ge-0/0/0.
- D. It displays a packet capture on interface ge-0/0/0.
Answer: D
Explanation:
The command "monitor traffic interface ge-0/0/0" (D) initiates a packet capture on the specified interface, allowing you to view the actual packets being transmitted and received. This is useful for troubleshooting and analyzing the traffic passing through the interface in real time.
NEW QUESTION # 27
Which two statements are correct about Junos traceoptions? (Choose two.)
- A. Traceoptions are enabled through configuration.
- B. Traceoptions cannot be enabled in a production environment.
- C. Traceoptions are enabled by default.
- D. Traceoption output, by default, is stored in /var/iog/<fiie-name>.
Answer: A,D
Explanation:
Traceoptions in Junos OS are used for detailed debugging and troubleshooting of protocols and processes within the system. They are not enabled by default due to the potential performance impact and volume of data generated. Instead, traceoptions are enabled through specific configuration settings under the relevant protocol or process hierarchy. This allows administrators to target their troubleshooting efforts and control the scope of logging. By default, the output generated by traceoptions is stored in files located in the /var/log directory, with the file name typically specified in the traceoptions configuration. This structured approach to logging and debugging helps in diagnosing complex issues without overwhelming the system or the administrator with irrelevant data.
NEW QUESTION # 28
Your network infrastructure transports data, voice, and video traffic. Users are complaining that voice and video calls are not performing to their expectations.
In this scenario, which technology would you implement to improve voice and video performance on your network?
- A. STP
- B. CoS
- C. NAT
- D. IPv6
Answer: B
Explanation:
In a network that carries diverse types of traffic like data, voice, and video, ensuring the performance of latency-sensitive applications such as voice and video calls is crucial. Class of Service (CoS) is a technology designed to prioritize network traffic, ensuring that critical applications like voice and video receive the necessary bandwidth and minimal latency. CoS mechanisms can include traffic classification, traffic policing, queue management, and scheduling. By implementing CoS, network administrators can assign higher priority to voice and video traffic, thus improving their performance across the network and addressing the users' complaints about call quality.
NEW QUESTION # 29
Which three benefits occur when operating an interior gateway protocol (IGP) in an autonomous system (AS)?
(Choose three.)
- A. IGPs determine the optimal paths for data transmission.
- B. IGPs learn everything about the subnets and best paths within your network.
- C. IGPs learn prefixes in the global Internet's routing table.
- D. IGPs automatically distribute static routing information.
- E. IGPs react very fast to network change.
Answer: A,B,E
Explanation:
Operating an Interior Gateway Protocol (IGP) within an Autonomous System (AS) provides several benefits, including determining the optimal paths for data transmission (B), reacting quickly to network changes (D), and learning all about the subnets and best paths within the network (E). IGPs are designed to manage routing within a single AS efficiently, adapting to changes and ensuring data is routed through the best available paths.
NEW QUESTION # 30
You are creating a new policy to accept and redistribute routes into your IGP.
In this scenario, which match criteria would you use to identify the route prefixes to select?
- A. neighbor
- B. instance
- C. route-filter
- D. route-type
Answer: C
Explanation:
When creating a policy to accept and redistribute routes into your IGP, "route-filter" (D) is the match criteria used to identify specific route prefixes. Route filters enable you to specify which routes should be accepted, rejected, or modified based on their attributes, such as prefix length or value.
NEW QUESTION # 31
What are two benefits when implementing class of service? (Choose two.)
- A. The network will be faster.
- B. Latency-sensitive traffic can be prioritized.
- C. Traffic congestion will be eliminated.
- D. Traffic congestion can be managed.
Answer: D
Explanation:
Class of Service (CoS) in Junos OS provides tools for managing traffic congestion and ensuring that latency-sensitive traffic is given priority over less time-critical data. By implementing CoS, network administrators can classify traffic into different priority levels, apply scheduling policies to ensure that high-priority traffic is transmitted first, and use congestion management techniques such as queue buffers and drop profiles. This helps in maintaining the quality of service for critical applications, especially during periods of high network congestion. However, CoS does not eliminate congestion entirely nor does it inherently make the network faster; it provides a mechanism for better managing and controlling traffic flows according to their importance and time sensitivity.
NEW QUESTION # 32
Exhibit
user@router> show route 192.168.36.1
inet.O: 5 destinations, 6 routes (5 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both
192.168.36.1/32 *[Static/5] 00:00:31
> to 10.1.1.2 via ge-0/0/10.0 [OSPF/IO] 00:02:21, metric 1 > to 10.1.1.2 via ge-0/0/10.0 Referring to the exhibit, which route(s) will be selected by Junos for packet forwarding?
- A. The Junos OS randomly selects one route.
- B. The Junos OS selects both routes.
- C. The OSPF route will be selected.
- D. The static route will be selected.
Answer: D
Explanation:
Junos OS selects routes based on the route preference (also known as administrative distance). Static routes typically have a lower route preference than OSPF routes, meaning they are more preferred. Since the static route to 192.168.36.1/32 is shown with a preference of 5, it will be selected over the OSPF route for packet forwarding, assuming no other factors such as route filters or policies affect the routing decision.
NEW QUESTION # 33
You configured your system authentication order using the set authentication-order tacplus radius password command.
Which statement is correct in this scenario?
- A. All authentication methods are used with the most restrictive permission set used.
- B. The password authentication will only be used if the TACACS+ and RADIUS servers fail to respond.
- C. The password authentication method is evaluated if the TACACS+ and RADIUS servers respond with a reject message.
- D. A rejection by TACACS+ will prevent a login and bypass the other two authentication methods.
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 # 34
Which two components are included in a transport header? (Choose two.)
- A. destination MAC address
- B. source port number
- C. destination port number
- D. source MAC address
Answer: B,C
Explanation:
The transport layer in the OSI model is responsible for end-to-end communication and error recovery. In a transport header, such as TCP or UDP, the key components include the source port number and the destination port number. These port numbers are used to identify sending and receiving applications. The source port number indicates the port of the sending application, and the destination port number refers to the port of the receiving application. MAC addresses, on the other hand, are part of the data link layer (Layer 2) and would be included in an Ethernet header, not a transport header.
NEW QUESTION # 35
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