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JN0-105 Junos - Associate (JNCIA-Junos) 2025 Exam Questions and Answers

Questions 4

Which process in the Junos OS is responsible for maintaining routing protocols and tables?

Options:

A.

mgd

B.

chassisd

C.

rpd

D.

dcd

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Questions 5

Which three benefits occur when operating an interior gateway protocol (IGP) in an autonomous system (AS)? (Choose three.)

Options:

A.

IGPs automatically distribute static routing information.

B.

IGPs determine the optimal paths for data transmission.

C.

IGPs learn prefixes in the global Internet's routing table.

D.

IGPs react very fast to network change.

E.

IGPs learn everything about the subnets and best paths within your network.

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Questions 6

Which two functions are performed by the PFE? (Choose two.)

Options:

A.

It implements firewall filters.

B.

It selects active routes.

C.

It forwards transit traffic.

D.

It maintains the routing table.

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Questions 7

Which Junos feature limits the amount of exception traffic that is sent from the PFE to the RE?

Options:

A.

scheduler

B.

policer

C.

CoS markings

D.

routing policy

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Questions 8

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?

Options:

A.

Thestaticrouteisevaluated by the poiicy3 routing policy.

B.

Thestaticrouteisevaluated by the poiicy2 routing policy.

C.

Thestaticrouteisrejected by the default routing policy.

D.

Thestaticrouteisrejected by the policyl routing policy.

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Questions 9

Your router has a route to the 10.1.1.0/24 network with a next hop of r jet.

In this scenario, which action will your router perform when traffic destined to the 10.1.1.0/24 network is received?

Options:

A.

The traffic will be discarded and an ICMP unreachable message will be sent to the destination of the traffic.

B.

The traffic will be discarded and an ICMP unreachable message will be sent to the source of the traffic.

C.

The traffic will be redirected using a default route.

D.

The traffic will be silently discarded.

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Questions 10

What are two types of transit traffic that traverse the forwarding plane of a Layer 3 router? (Choose two.)

Options:

A.

unicast traffic

B.

multicast traffic

C.

exception traffic

D.

broadcast traffic

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Questions 11

Which two statements are correct about a Routing Engine? (Choose two.)

Options:

A.

It processes CoS marked traffic.

B.

It forwards transit traffic.

C.

It processes management traffic.

D.

It maintains routing tables.

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Questions 12

Which protocol is responsible for learning an IPv4 neighbor's MAC address?

Options:

A.

Address Resolution Protocol (ARP)

B.

Network Address Translation (NAT)

C.

Media Access Control Security (MACsec)

D.

Neighbor Discovery Protocol (NDP)

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Questions 13

Which two statements are correct about firewall filters? (Choose two.)

Options:

A.

"Discard" is the default action of packets that are not explicitly allowed.

B.

There can be only one firewall filter.

C.

"Accept" is the default action of packets that are not explicitly allowed.

D.

There can be multiple firewall filters.

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Questions 14

Which layer of the OSI model contains the IP address information?

Options:

A.

Layer 2

B.

Layer 3

C.

Layer 1

D.

Layer 4

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Questions 15

Which service does RADIUS provide?

Options:

A.

routing

B.

authentication

C.

DNS resolution

D.

time synchronization

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Questions 16

What are two link-state routing protocols? (Choose two.)

Options:

A.

RIP

B.

BGP

C.

OSPF

D.

IS-IS

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Questions 17

What are two methods for navigating to configuration mode from an operational mode prompt? (Choose two.)

Options:

A.

Use the edit command.

B.

Use the quit command.

C.

Use the exit command.

D.

Use the configure command.

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Questions 18

Which statement is correct when multiple users are configuring a Junos device using the configure private command?

Options:

A.

A commit by any user will commit changes made by all active users.

B.

A commit will not succeed until there is only a single user in configuration mode.

C.

Each user gets their own candidate configuration.

D.

Each user shares the same candidate configuration.

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Questions 19

Which two statements about route preference in Junos are correct? (Choose two.)

Options:

A.

Both direct and static routes have the same preference.

B.

Both direct and local routes have the same preference.

C.

Both OSPF internal and OSPF AS external routes have the same preference.

D.

Both EBGP and IBGP routes have the same preference.

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Questions 20

Which two statements are true about the candidate configuration? (Choose two.)

Options:

A.

Candidate configuration changes are automatically applied.

B.

You can deploy multiple changes at the same time.

C.

Multiple users cannot modify the same candidate configuration.

D.

You can discard changes before committing them.

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Questions 21

Which component is considered part of the data plane?

Options:

A.

the Routing Engine

B.

the Packet Forwarding Engine

C.

the power supply

D.

the fan tray

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Questions 22

What is a benefit of using J-Web?

Options:

A.

It simultaneously manages multiple devices.

B.

It provides a customizable dashboard.

C.

It provides more advanced features than the CLI.

D.

It provides console-based management.

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Questions 23

Which two actions happen when multiple users issue the configure exclusive command to enter configuration mode on a Junos device? (Choose two.)

Options:

A.

Other users can enter configuration mode.

B.

The candidate configuration is unlocked.

C.

The candidate configuration is locked.

D.

Other users cannot enter configuration mode.

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Questions 24

Click the Exhibit button.

How is traffic, sourced from 10.0.0.0/8, treated by the firewall filter shown in the exhibit?

Options:

A.

logged and discarded

B.

logged and rejected

C.

logged with no further action

D.

logged and accepted

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Questions 25

Which two statements apply to the Routing Engine functions? (Choose two.)

Options:

A.

It responds to ping and traceroute commands.

B.

It maintains the routing tables.

C.

It does not process routing updates.

D.

It processes the transit traffic.

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Questions 26

Which type of device uses the destination IP address to forward packets?

Options:

A.

Layer 3 router

B.

Layer 2 switch

C.

repeater

D.

hub

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Questions 27

You issue the monitor traffic interface ge-0/0/0 command.

What will this command accomplish?

Options:

A.

It displays real-time statistics for interface ge-0/0/0.

B.

It displays an operational summary of 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.

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Questions 28

What is the protocol data unit (PDU) of the Data Link Layer?

Options:

A.

segment

B.

byte

C.

frame

D.

bit

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Questions 29

Which character is used to filter the command output in the Junos CLI?

Options:

A.

|

B.

>

C.

<

D.

?

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Questions 30

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.)

Options:

A.

Set the date and time setting manually.

B.

Configure an NTP server.

C.

Configure a DNS server.

D.

Reboot the device.

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Exam Code: JN0-105
Exam Name: Junos - Associate (JNCIA-Junos) 2025 Exam
Last Update: Apr 2, 2025
Questions: 101
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