JN0-349 valid test sample questions

Changing the Concept of JN0-349 Exam Preparation 2023

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Juniper JN0-349 certification exam is designed for individuals who wish to demonstrate their skills and knowledge in enterprise routing and switching technologies. Enterprise Routing and Switching, Specialist (JNCIS-ENT) certification is intended for network professionals who are responsible for configuring and managing Juniper Networks devices in a production environment. JN0-349 exam covers a range of topics including routing principles, switching concepts, virtual LANs (VLANs), spanning tree protocol (STP), layer 2 and layer 3 protocols, and network security.

Juniper JN0-349 certification exam is ideal for network engineers, network administrators, and other IT professionals who work in the enterprise networking domain. Enterprise Routing and Switching, Specialist (JNCIS-ENT) certification is aimed at professionals who want to enhance their knowledge and skills in Juniper Networks routing and switching technologies and validate their expertise in the field.

QUESTION 20
Referring to the exhibit, which two statements about BGP prefixes advertised by R1 to AS 65501
are true? (Choose two.)

R1 will modify the originator ID attribute in prefixes advertised to AS 65501

R1 will modify the AS path attribute in prefixes advertised to AS 65501

R1 will modify the next-hop attribute in prefixes advertised to AS 65501

R1 will modify the cluster list attribute in prefixes advertised to AS 65501

QUESTION 21
Which statement is correct about IS-IS link state PDUs?

They are used to maintain link-state database synchronization.

They are used to establish adjacencies.

They are used to build the link-state database.

They are used to determine whether the neighbors are Level 1 or Level 2.

QUESTION 22
Which two statements are true regarding RIB groups? (Choose two.)

The first table listed is the primary route table and determines the address family of the RIB group.

The last table listed is the primary route table and determines the address family of the RIB group.

A RIB group must contain one or more export-rib statements.

A RIB group must contain one or more import-rib statements.

QUESTION 23
What are two benefits of 802.3ad link aggregation? (Choose two)

It increases bandwidth

It ensures symmetrical paths

It simplifies interface configuration.

It creates physical layer redundancy.

Aggregating multiple links between physical interfaces creates a single logical point-to-point trunk
link or a LAG. The LAG balances traffic across the member links within an aggregated Ethernet
bundle and effectively increases the uplink bandwidth. Another advantage of link aggregation is
increased availability, because the LAG is composed of multiple member links. If one member
link fails, the LAG continues to carry traffic over the remaining links.
https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-
switches/topics/topic-map/switches-interface-aggregated.html

QUESTION 24
Exhibit.

Your switches are managed using Junos Space Network Director. You want to secure the switches using a Network Director filter profile. A filter profile containing one term shown In the exhibit is deployed to ports on managed devices.
Which traffic will be accepted by the filter?

Traffic containing a destination MAC of 02:85:05:00:00:00/24 will be accepted.

All traffic will be accepted.

Traffic containing a source MAC of 02:85:05:00:00:00/24 will be accepted.

No traffic will be accepted.

QUESTION 25
Given the route shown in the exhibit, which two prefixes contribute to the aggregate route?
(Choose two.)

172.12.31.0/24

172.12.33.0/24

172.12.30.0/24

172.12.32.0/24

QUESTION 26
Click the Exhibit button.

Which statement is true about the configuration shown in the exhibit?

The preference for the 172.30.25.1 next hop is 5.

The preferred next hop is 172.30.25.5.

The preference for the 172.30.25.1 next hop is 7.

172.30.25.1 is the preferred next hop.

QUESTION 27
Click the Exhibit button.

Referring to the exhibit, which configuration change is needed for an IS-IS Level 1 adjacency between R1 and R2?

Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R2

Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R1

Enable Level 2 on R1’s ge-0/0/1 interface

Disable Level 2 on R2’s ge-0/0/1 interface

QUESTION 28
Which two statements about aggregate routes in the Junos OS are correct? (Choose two.)

An aggregate route has a default next hop of an IP address.

An aggregate route always shows as active in the routing table.

An active route can contribute only to a single aggregate route.

Only one aggregate route can be configured for each destination prefix.

QUESTION 29
You are a service provider and have multiple customers in a building.
You are installing a new switch that can host all of your customers. However, you would like to
ensure that one customer cannot see or broadcast to another customer.
You would also like to have them use a common gateway IP address from the building. What
should be used to provide this access?

VLAN

private VLAN

filter-based VLAN

Layer 2 tunneling

QUESTION 30
Which two statements are true about GRE tunnels on Junos devices? (Choose two.)

Only one GRE tunnel can be included for each logical unit.

Multiple GRE tunnels can be included for each logical unit.

GRE interfaces can include multiple logical units.

GRE interfaces can include only a single logical unit.

QUESTION 31
You want to use filter-based forwarding (FBF) to forward traffic sourced from subnet 10.0.0.0/24
to a specific destination.
Which two routing instance types would enable you to accomplish this task? (Choose two.)

virtual routing and forwarding

virtual router

forwarding

virtual switch

https://www.juniper.net/documentation/en_US/junos/topics/example/firewall-filter-option-filter-
based-forwarding-example.html

QUESTION 32
Click the Exhibit Button.

Referring to the exhibit, which two statements about the BGP connection are correct? (Choose two.)

The local device has AS 100 configured but the peer is expecting AS 101.

This is an EBGP peering session.

This is an IBGP peering session.

The local device has AS 101 configured but the peer is expecting AS 100.

QUESTION 33
Which two statement are correct? (Choose two.)

Router a sends routers learned from Router E to Router B, Router C, and Router D.

Router A does not send routes learned from Router D to Router B and Router C.

Router A sends routers learned from Router D to Router B and router C.

Router A does not send routers learned from Router E to Route B, Router C, and Router D.

QUESTION 34
Which two sequences correctly describe the processing order of firewall filters on an EX Series switch? (Choose two.)

router filter > VLAN filter > port filter > transmit packet

port filter > VLAN filter > router filter > transmit packet

receive packet > port filter > VLAN filter > router filter

receive packet > router filter > VLAN filter > port filter

QUESTION 35
What is a characteristic of OSPF ASBRs?

ASBRs transmit routing information between the backbone and other areas.

ASBRs cannot be part of the backbone and another area at the same time.

ASBRs inject routing information from outside the OSPF domain.

ASBRs link two OSPF areas.

QUESTION 36
You added a new ESXi host connected to port ge-0/0/1. One of the VMs configured with VLAN 10 is not reachable from any other device on the switch. To troubleshoot, you decide to verify if the VM’s MAC address is learned properly under VLAN 10.
Which command would you use in this scenario?

show ethernet-switching table vlan-id 10

show interfaces ge-0/0/1 detail

show vlans 10

monitor interface ge-0/0/1

QUESTION 37
You notice that currently two MAC addresses are associated with a single access port in the bridge table of one of your EX Series switches.
What are two explanations for this behavior? (Choose two.)

The native VLAN feature has been associated with the access port.

The mac-move-limit feature has been disabled on the access port,

The access port connects to an IP phone which connects ta a host device

The access port connects to multiple hosts through a rogue device

QUESTION 38
Referring to the exhibit, which statement is correct?

The ge-0/0/15 interface is using the default port cost.

This switch has a bridge priority of 8k.

This switch is currently blocking all traffic.

The ge-0/0/9 interface is using the default interface priority value.

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