[UPDATED 2024] Getting JN0-105 Certification Made Easy!
JN0-105 Exam Crack Test Engine Dumps Training With 101 Questions
NEW QUESTION # 60
Which layer of the OSI model contains the IP address information?
- A. Layer 2
- B. Layer 4
- C. Layer 1
- D. Layer 3
Answer: D
Explanation:
The OSI (Open Systems Interconnection) model is a conceptual framework used to understand network interactions in seven distinct layers. IP (Internet Protocol) addresses are part of Layer 3, known as the Network Layer. This layer is responsible for packet forwarding, including routing through intermediate routers, and it handles the logical addressing scheme of the network to ensure that packets can be routed across multiple networks and reach their destination. IP addresses provide unique identifiers for network interfaces, allowing for communication between devices on a network or across different networks.
NEW QUESTION # 61
Which process in the Junos OS is responsible for device management tasks including the CLI and commit operations?
- A. rpd
- B. dcd
- C. mgd
- D. chassisd
Answer: C
Explanation:
In Junos OS, the management daemon (mgd) is responsible for handling all the device management tasks, including processing CLI commands and handling commit operations. The mgd daemon interacts with the Junos OS configuration database and provides the necessary logic to ensure that configuration changes are syntactically correct and do not conflict with each other. When a user commits a configuration, mgd validates the changes, applies them to the running configuration, and ensures that the necessary daemons are notified of the changes to apply them accordingly.
NEW QUESTION # 62
Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?
- A. scheduler
- B. CoS markings
- C. routing policy
- D. policer
Answer: D
Explanation:
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 requireintervention 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.
NEW QUESTION # 63
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 OSPF route will be selected.
- B. The static route will be selected.
- C. The Junos OS selects both routes.
- D. The Junos OS randomly selects one route.
Answer: B
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 # 64
Click the Exhibit button.
Referring the exhibit, what does the highlighted number indicate?
- A. route preference is 5
- B. hop count is 5
- C. cost is 5
- D. metric is 5
Answer: A
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 # 65
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. IPv6
- B. NAT
- C. CoS
- D. STP
Answer: C
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 # 66
Which two components are included in a transport header? (Choose two.)
- A. destination MAC address
- B. source MAC address
- C. source port number
- D. destination port number
Answer: C,D
NEW QUESTION # 67
What are two types of transit traffic that traverse the forwarding plane of a Layer 3 router? (Choose two.)
- A. unicast traffic
- B. multicast traffic
- C. exception traffic
- D. broadcast traffic
Answer: A,B
Explanation:
Transit traffic that traverses the forwarding plane of a Layer 3 router includes both unicast and multicast traffic types. Unicast traffic is directed from a single source to a single destination, while multicast traffic is sent from one source to multiple destinations that are part of a multicast group. These types of traffic are efficiently routed through the network by leveraging the router's forwarding plane capabilities. Exception traffic, which requires special handling by the control plane, and broadcast traffic, which is typically limited to a single broadcast domain and not usually forwarded by Layer 3 routers, are not considered standard types of transit traffic for the forwarding plane of a router.
NEW QUESTION # 68
How many rescue configuration files are supported on a Junos device?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Junos OS supports only 1 rescue configuration file on a device. This rescue configuration is a safeguard feature that allows network administrators to revert to a known good configuration in case of a configuration error or issue, ensuring network stability.
In Junos OS, each device supports only one rescue configuration file. The rescue configuration is a specific configuration that can be saved and later retrieved if needed. This is used as a fallback configuration that you know works and can be applied in case of an emergency or if the current configuration has issues.
Reference:
"You can create a rescue configuration file by using the request system configuration rescue save operational mode command. Each Junos OS device can have only one rescue configuration file."
NEW QUESTION # 69
What is a benefit of using J-Web?
- A. It provides a customizable dashboard.
- B. It provides console-based management.
- C. It simultaneously manages multiple devices.
- D. It provides more advanced features than the CLI.
Answer: A
Explanation:
If you've committed a configuration and then need to revert to the previous configuration, therollback command is used. Since the incorrect IP address has not been committed, as indicated by thecommit check command being successful, issuingrollback 1will undo the changes made in the current session, which includes the accidental entry of the IP address.
NEW QUESTION # 70
What are two physical interface properties? (Choose two.)
- A. routing protocols
- B. MTU
- C. MAC address
- D. IP address
Answer: B,C
Explanation:
Two physical interface properties in Junos OS include the MAC address (A) and the Maximum Transmission Unit (MTU) size (D). The MAC address is a hardware identifier for the network interface, while the MTU size determines the largest packet size that the interface can transmit without needing to fragment the packet.
NEW QUESTION # 71
Which two statements are true about the Junos OS? (Choose two.)
- A. Routing tables are stored in the control plane.
- B. Exception traffic is never sent to the control plane.
- C. Exception traffic is sent to the control plane.
- D. Routing tables are stored in the forwarding plane.
Answer: A,C
Explanation:
In Junos OS, as with many network operating systems, the control plane is responsible for processes that determine how to route traffic. This includes maintaining routing tables, which store information about network paths and protocols. Therefore, routing tables are indeed stored in the control plane.
Exception traffic refers to packets that cannot be processed by the normal fast-path processing of the Packet Forwarding Engine (PFE) in the forwarding plane, and thus are sent to the control plane for further processing.
This might include packets destined for the router itself, packets that need to be fragmented, or packets that match certain firewall filter criteria, among other reasons.
Routing tables are not stored in the forwarding plane. However, the forwarding plane contains the forwarding table (sometimes referred to as the forwarding informationbase or FIB), which is a distilled version of the routing table optimized for fast packet forwarding. The forwarding plane uses this information to perform the actual transfer of packets across the network device interfaces.
NEW QUESTION # 72
What are two benefits when implementing class of service? (Choose two.)
- A. Traffic congestion will be eliminated.
- B. The network will be faster.
- C. Traffic congestion can be managed.
- D. Latency-sensitive traffic can be prioritized
Answer: A,D
Explanation:
Implementing Class of Service (CoS) in a network provides numerous benefits, particularly in managing traffic based on its importance, source, or type. CoS enables network administrators to manage traffic congestion by applying various queuing techniques and policies to ensure that critical services remain unaffected during high congestion periods. Additionally, CoS allows for the prioritization of latency-sensitive traffic such as voice and video, ensuring that these services maintain quality despite varying network conditions.
NEW QUESTION # 73
Which two external authentication methods does Junos support for administrative access? (Choose two.)
- A. TACACS+
- B. ACE
- C. RADIUS
- D. NIS
Answer: A
Explanation:
Junos OS supports several external authentication methods for administrative access, with TACACS+ (Terminal Access Controller Access-Control System Plus) and RADIUS (Remote Authentication Dial-In User Service) being among the most commonly used. Both TACACS+ and RADIUS are protocols that allow network devices to communicate with a central authentication server, enabling centralized control over user authentication and authorization. This centralization simplifies the management of user credentials and access policies, especially in larger networks with multiple devices.
NEW QUESTION # 74
How many login classes are assignable to a user account?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
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 # 75
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 # 76
Which two statements are correct regarding Layer 2 network switches? (Choose two.)
- A. Switches are susceptible to traffic loops.
- B. Switches create a single collision domain.
- C. Switches do not learn MAC addresses.
- D. Switches flood broadcast traffic.
Answer: A,D
Explanation:
Layer 2 network switches are crucial components in local area networks (LANs), providing multiple functions for data packet forwarding and network segmentation. One inherent characteristic of switches is their susceptibility to traffic loops, especially in networks with redundant paths. Without proper loop prevention protocols like Spanning Tree Protocol (STP), loops can cause broadcast storms and network instability.
Additionally, switches inherently flood broadcast traffic to all ports within the broadcast domain, except the port on which the broadcast was received. This is because broadcast frames are meant to be delivered to all devices within the VLAN, and the switch ensures this by flooding these frames to all ports in the VLAN, except the source port.
NEW QUESTION # 77
How many rescue configuration files are supported on a Junos device?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Junos OS supports only 1 rescue configuration file on a device. This rescue configuration is a safeguard feature that allows network administrators to revert to a known good configuration in case of a configuration error or issue, ensuring network stability.
NEW QUESTION # 78
Exhibit
[edit]
user@routerl set interfaces ge-0/1/2 unit 0 family inet address 172.16.101.1/24 [edit] user@router# commit check configuration check succeeds
[edit]
user@router#
You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered
172.16.101.1/24 as shown in the exhibit.
Which command should you issue to solve the problem?
- A. [edit] userOrouter# rollback 0
- B. (edit] user@router# rollback 1
- C. [edit] user@router# rollback 2
- D. [edit] user@routeri rollback rescue
Answer: B
Explanation:
If you've committed a configuration and then need to revert to the previous configuration, therollback command is used. Since the incorrect IP address has not been committed, as indicated by thecommit check command being successful, issuingrollback 1will undo the changes made in the current session, which includes the accidental entry of the IP address.
NEW QUESTION # 79
What are two link-state routing protocols? (Choose two.)
- A. IS-IS
- B. RIP
- C. OSPF
- D. BGP
Answer: A,C
Explanation:
Link-state routing protocols are a type of routing protocol used in packet-switching networks for finding the best path between source and destination. OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System) are both examples of link-state routing protocols. They work by maintaining a complete map or topology of the network, allowing routers to independently calculate the best path to each destination.
Unlike distance-vector protocols like RIP, link-state protocols are more efficient and scalable, making them suitable for larger networks.
NEW QUESTION # 80
Which command displays all IPv6 routes in the default routing instance?
- A. showroute table inet.l
- B. showroute table inet6.0
- C. showroute table inet.0
- D. showroute table inet6.1
Answer: B
Explanation:
In Junos OS, the command to display IPv6 routes in the default routing instance isshow route table inet6.0.
The routing tableinet6.0specifically holds IPv6 routes. The commandshow route table inet.0is used for IPv4 routes, andinet6.1orinet.l(assuminginet.lis a typo forinet.1) are not standard Junos routing tables for displaying IPv6 routes in the default routing instance.
NEW QUESTION # 81
What information does the forwarding table require so that the device forwards traffic? (Choose three.)
- A. outgoing interface name
- B. next hop IP address
- C. next hop MAC address
- D. OSPF metric value
- E. BGP local preference value
Answer: A,B,C
Explanation:
The forwarding table in a network device requires specific information to efficiently forward traffic toward its destination. This includes the next hop IP address, which indicates the next router or device in the path to the destination. The outgoing interface name identifies the physical or logical interface through which the packet should be sent to reach the next hop. Lastly, the next hop MAC address is crucial for Layer 2 forwarding decisions, allowing the device to encapsulate the IP packet in a frame that can be understood by Ethernet or other Layer 2 protocols. OSPF metric values and BGP local preference values are used in the routing decision process to select the best path and populate the forwarding table but are not directly used by the forwarding table to forward traffic.
NEW QUESTION # 82
You have configured some interfaces on a Junos device; however, you have not yet committed the configuration.
What happens if you issue the rollback 0 command in this scenario?
- A. The interface changes you made are discarded.
- B. The messages.log file is deleted.
- C. The factory default configuration is loaded.
- D. The Junos device is rebooted.
Answer: A
Explanation:
In Junos OS, issuing therollback 0command reverts the candidate configuration to the last committed configuration. If you have made changes to some interfaces but have not committed those changes, using rollback 0will discard these uncommitted changes, reverting to the state of the configuration at the time of the last commit. This command does not affect system files likemessages.log, reboot the device, or load the factory default configuration; it simply undoes uncommitted changes.
NEW QUESTION # 83
Which command modifier would you use to see all possible completions for a specific command?
- A. ?
- B. |
- C. detail
- D. extensive
Answer: A
Explanation:
In Junos OS, the ? command modifier is used to display all possible completions for a specific command. This helps users understand the available options and syntax for a command they are trying to use.
Reference:
"Use the ? command modifier to display all possible completions for a specific command."
NEW QUESTION # 84
Which statement is correct concerning exception traffic processing?
- A. Exception traffic is never forwarded.
- B. Exception traffic is always dropped during congestion.
- C. Exception traffic is discarded by the PFE.
- D. Exception traffic is rate-limited to protect the RE.
Answer: D
Explanation:
Exception traffic refers to packets that the Packet Forwarding Engine (PFE) cannot process normally and must be forwarded to the Routing Engine (RE) for further processing. This includes packets destined for the router itself or packets needing special handling that the PFE cannot provide. To protect the RE from being overwhelmed by such traffic, which could potentially impact the router's control plane functions, exception traffic is rate-limited. This means that there's a threshold to how much exception traffic can be sent to the RE, ensuring that the router's critical management and control functions remain stable and responsive even during high traffic volumes or attacks.
NEW QUESTION # 85
......
Juniper JN0-105 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
JN0-105 Exam Dumps Contains FREE Real Quesions from the Actual Exam: https://simplilearn.actual4labs.com/Juniper/JN0-105-actual-exam-dumps.html