New JN0-105 Test Materials & Valid JN0-105 Test Engine
JN0-105 Updated Exam Dumps [2025] Practice Valid Exam Dumps Question
NEW QUESTION # 26
Exhibit
{hold:node0}[edit]
root# set system root-authentication ?
Possible completions:
+ apply-groups Groups from which to inherit configuration data
+ apply-groups-except Don't inherit configuration data from these groups
encrypted-password Encrypted password string
load-key-file File (URL) containing one or more ssh keys
plain-text-password Prompt for plain text password (autoencrypted)
> ssh-dsa Secure shell (ssh) DSA public key string
> ssh-rsa Secure shell (ssh) RSA public key string
{hold:node0}[edit]
root# set system root-authentication plain-text-password
New password:
Retype new password:
{hold:node0}[edit]
root# commit and-quit
[edit interfaces]
'ge-0/0/0'
HA management port cannot be configured
error: configuration check-out failed
{hold:node0}[edit]
root#
You are unable to remotely access your Juniper device using the CLI.
Referring to the exhibit, which command would you add to the existing configuration to enable remote CLI access?
- A. set system login idle-timeout 20
- B. set system root-authentication plain-text-password
- C. load factory-default
- D. set system services ssh
Answer: D
Explanation:
In Junos OS, remote access to the device's CLI is commonly facilitated through Secure Shell (SSH), a protocol providing secure command-line access over an insecure network. The given exhibit indicates an attempt to set a root authentication password but does not show configuration for enabling remote access services. To enable SSH, which is not shown in the configuration snippet, you need to configure the device to accept SSH connections. This is done by enabling the SSH service within the system services hierarchy of the configuration. The correct command to add to the existing configuration for enabling remote CLI access via SSH is set system services ssh. This command activates the SSH service, allowing secure remote logins to the device.
NEW QUESTION # 27
Which two actions happen when multiple users issue the configure exclusive command to enter configuration mode on a Junos device? (Choose two.)
- A. Other users cannot enter configuration mode.
- B. The candidate configuration is locked.
- C. The candidate configuration is unlocked.
- D. Other users can enter configuration mode.
Answer: A
Explanation:
When a user enters configuration mode using theconfigure exclusivecommand on a Junos device, the candidate configuration is locked for that user, preventing other users from making concurrent configuration changes. This exclusive lock ensures that only one user can make changes at a time, preventing conflicts and potential errors from simultaneous modifications. Other users attempting to enter configuration mode while it is locked will receive a notification that the configuration is currently being edited by another user.
NEW QUESTION # 28
What will the request system configuration rescue save command do?
- A. It saves a configuration version prior to the configuration most recently committed as the rescue configuration.
- B. It activates the rescue configuration.
- C. It saves the candidate configuration as the rescue configuration.
- D. It saves the most recently committed configuration as the rescue configuration.
Answer: D
Explanation:
The "request system configuration rescue save" command in Junos OS saves the most recently committed configuration as the rescue configuration, making A the correct answer. This feature allows administrators to set a known good configuration that can be quickly reverted to in case of configuration errors or issues.
NEW QUESTION # 29
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 # 30
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 routing table is used by the RE to select the best route.
- C. The routing table stores all routes and prefixes from all protocols.
- D. The forwarding table stores all routes and prefixes from all protocols.
Answer: B,C
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 # 31
Which two statements apply to the Routing Engine functions? (Choose two.)
- A. It processes the transit traffic.
- B. It does not process routing updates.
- C. It responds to ping and traceroute commands.
- D. It maintains the routing tables.
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 # 32
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
- A. Media Access Control Security (MACsec)
- B. Address Resolution Protocol (ARP)
- C. Neighbor Discovery Protocol (NDP)
- D. Network Address Translation (NAT)
Answer: B
Explanation:
The Address Resolution Protocol (ARP) is a fundamental protocol used in IPv4 networking to map an IP address to its corresponding MAC (Media Access Control) address. When an IPv4 device wants to communicate with another device on the same local network, it uses ARP to find out the MAC address associated with the target device's IP address. This ensures that IP packets can be encapsulated into Ethernet frames and delivered to the correct hardware address on the local network segment. ARP does not apply to IPv6, where Neighbor Discovery Protocol (NDP) performs a similar function.
NEW QUESTION # 33
You have completed the initial configuration of your new Junos device. You want to be able to load this configuration at a later time.
Which action enables you to perform this task?
- A. Enter the load factory-default command.
- B. Enter the request system configuration rescue save command.
- C. Enter the request system zeroize command.
- D. Enter the request system reboot command.
Answer: B
Explanation:
In Junos OS, the request system configuration rescue save command is used to save the current active configuration as a rescue configuration. This feature is particularly useful for preserving a known good configuration state that can be quickly reverted to in case of configuration errors or issues. By saving a rescue configuration, administrators can ensure that they have a reliable fallback option that can be loaded in the future to restore the device's operation without having to reconfigure from scratch. This is an essential practice for maintaining network stability and quick recovery.
NEW QUESTION # 34
Which protocol would you configure to synchronize the time and date on a Junos device?
- A. NTP
- B. RIP
- C. NMP
- D. SNMP
Answer: A
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 # 35
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 routing table is used by the RE to select the best route.
- C. The routing table stores all routes and prefixes from all protocols.
- D. The forwarding table stores all routes and prefixes from all protocols.
Answer: B,C
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 # 36
Which command displays all IPv6 routes in the default routing instance?
- A. show route table inet.1
- B. show route table inet6.1
- C. show route table inet6.0
- D. show route table inet.0
Answer: C
Explanation:
The show route table inet6.0 command displays all IPv6 routes in the default routing instance. In Junos OS, the routing table for IPv6 addresses is referred to as inet6.0, whereas inet.0 is used for IPv4 unicast routes. The other options do not correspond to the correct IPv6 routing table.
Reference:
Juniper official documentation: Junos OS Routing Tables Overview.
NEW QUESTION # 37
Which two common routing policy actions affect the flow of policy evaluation? (Choose two.)
- A. next policy
- B. next term
- C. community
- D. next hop
Answer: A,B
Explanation:
In Junos OS routing policy evaluation, "next policy" (A) and "next term" (C) are common actions that affect the flow of policy evaluation. "Next policy" directs the evaluation to the next policy in the sequence, whereas
"next term" moves the evaluation to the next term within the current policy, allowing for granular control over routing decisions.
NEW QUESTION # 38
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
- A. Media Access Control Security (MACsec)
- B. Address Resolution Protocol (ARP)
- C. Neighbor Discovery Protocol (NDP)
- D. Network Address Translation (NAT)
Answer: B
Explanation:
The Address Resolution Protocol (ARP) is responsible for mapping an IPv4 address to a machine's MAC address. ARP operates at Layer 2 of the OSI model and is used to find the MAC address of a host given its IPv4 address. When a device wants to communicate with another device on the same local network, it uses ARP to discover the recipient's MAC address.
References:
* Juniper official documentation: ARP.
* Networking standards: RFC 826.
NEW QUESTION # 39
You are configuring a firewall filter on a Juniper device.
In this scenario, what are two valid terminating actions? (Choose two.)
- A. 3next term
- B. 1 count
- C. 4accept
- D. 2discarD
Answer: C,D
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 # 40
Which type of device uses the destination IP address to forward packets?
- A. repeater
- B. hub
- C. Layer 3 router
- D. Layer 2 switch
Answer: C
Explanation:
A Layer 3 router forwards packets based on the destination IP address. It operates at the network layer of the OSI model and uses routing tables to determine the best path for packet delivery. Unlike Layer 2 switches, which forward packets based on MAC addresses, routers handle logical addressing, making them crucial for inter-network communication.
Reference:
Junos OS Documentation on Routing Fundamentals.
NEW QUESTION # 41
Which command displays all IPv6 routes in the default routing instance?
- A. showroute table inet6.1
- B. showroute table inet6.0
- C. showroute table inet.0
- D. showroute table inet.l
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 # 42
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. instance
- B. route-filter
- C. neighbor
- D. route-type
Answer: B
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 # 43
Which two statements apply to the Routing Engine functions? (Choose two.)
- A. It processes the transit traffic.
- B. It does not process routing updates.
- C. It responds to ping and traceroute commands.
- D. It maintains the routing tables.
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 # 44
You are configuring a firewall filter on a Juniper device.
In this scenario, what are two valid terminating actions? (Choose two.)
- A. 3next term
- B. 1 count
- C. 4accept
- D. 2discarD
Answer: C,D
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 # 45
What are two types of transit traffic that traverse the forwarding plane of a Layer 3 router? (Choose two.)
- A. exception traffic
- B. multicast traffic
- C. broadcast traffic
- D. unicast traffic
Answer: B,D
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 # 46
Click the Exhibit button.
Referring to the exhibit, what is the source IP address of the ping that was executed?
- A. 10.23.0.3
- B. 10.12.0.2
- C. 10.24.0.4
- D. 10.23.0.2
Answer: D
Explanation:
The exhibit shows a ping test being executed from router R2 to the IP address 10.23.0.3. Since the ping command is issued on R2 and we see successful replies from 10.23.0.3, it means the source of the ping must be an interface on R2. Given the network diagram and the IP address scheme, the source IP address of the ping is on the interface ge-0/0/2 of R2, which is in the subnet 10.23.0.0/24. The only logical IP address for R2's interface in this subnet, based on standard networking practices and the given options, would be 10.23.0.2. The other addresses provided in the options belong to different subnets or are the destination of the ping itself.
NEW QUESTION # 47
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 poiicy2 routing policy.
- B. Thestaticrouteisrejected by the policyl routing policy.
- C. Thestaticrouteisrejected by the default routing policy.
- D. Thestaticrouteisevaluated by the poiicy3 routing policy.
Answer: A
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 # 48
Which character is used to filter the command output in the Junos CLI?
- A. |
- B. <
- C. ?
- D. >
Answer: A
Explanation:
In the Junos CLI, the pipe character | is used as a filter operator to refine command output. This operator can be combined with various filtering commands like match, except, count, etc., to display only the relevant portions of the command output. For example, using | match <pattern> filters the output to show only the lines that contain the specified pattern, making it easier to find specific information within extensive command output. This functionality is especially useful in managing and troubleshooting complex configurations and network states, allowing for more efficient analysis of the device's operational status and configuration details.
NEW QUESTION # 49
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