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Juniper JN0-349 - Questions & Answers

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Question 1
Single choice

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?

A.

VLAN

B.

private VLAN

C.

filter-based VLAN

D.

Layer 2 tunneling

Question 2
Single choice

You must limit access to a printer with a persistent DHCP address of 2001:db8:0000:50::10/64 in VLAN
v50 to users assigned to VLAN v50 only.

Which action would satisfy this requirement?

A.

Implement persistent MAC learning to ensure that 2001:db8:0000:50::10 is allocated properly.

B.

Implement a firewall filter on the IRB interface for VLAN v50, blocking traffic to/from
2001:db8:0000:50::10.

C.

Implement a firewall filter on the VLAN v50, blocking traffic to/from 2001:db8:0000:50::10.

D.

Implement DHCP snooping on VLAN v50 to ensure that 2001:db8:0000:50::10 is allocated properly.

Question 3
Single choice

What is a purpose for the OSPF database description packet?

A.

to transfer the LSA headers between two systems

B.

to determine who is in charge of database flushing

C.

to transfer the LSUs between two systems

D.

to determine who is in charge of adjacency formation

Question 4
Single choice

Click the Exhibit button.

Your company has connections to two ISPs. Each ISP is in a separate routing instance. You need to advertise the 0.0.0.0/0 prefix from both ISPs to all your devices.

Referring to the exhibit, which statement is true in this scenario?

A.

You must create and apply match input filters on interfaces ge-0/0/2 and ge-0/0/3.

B.

You must create a policy to allow traffic from your network to each ISP.

C.

You must create an internal routing instance for your network.

D.

You must create a RIB group to share interface routes.

Question 5
Multiple choice

What are three reasons a BGP route would be hidden? (Choose three.)

A.

The AS Path contains a 0.

B.

It is suppressed by a damping policy.

C.

The Local Preference is 0.

D.

The next hop is unreachable.

E.

It is rejected by a firewall term.

Question 6
Single choice

The router ID is not configured.

How does OSPFv3 determine the router ID in this situation?

A.

OSPFv3 uses the IPv4 address of the first interface that comes up.

B.

OSPFv3 uses the IPv6 address of the last interface that comes up.

C.

OSPFv3 uses the IPv6 address of the first interface that comes up.

D.

OSPFv3 uses the IPv4 address of the last interface that comes up.

Question 7
Single choice

Referring to the exhibit, which devices will receive the packet sent by User B?

A.

User A and User D

B.

User C and User D

C.

User C

D.

User C, User A, and User D

Question 8
Multiple choice

Which two statements about DIS elections in IS-IS are correct? (Choose two.)

A.

If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value becomes the DIS.

B.

The router with the higher priority value becomes the DIS.

C.

The router with the lower priority value becomes the DIS.

D.

If a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value becomes the DIS.

Question 9
Multiple choice

What are two Layer 2 firewall filter types? (Choose two.)

A.

port-based

B.

packet-based

C.

flow-based

D.

VLAN-based

Question 10
Single choice

Click the Exhibit button.

You are responsible for managing a Layer 2 network using RSTP for loop prevention. You recently committed the configurations shown in the exhibit. Unfortunately, Switch-2 became the root bridge and you must ensure that Switch-1 becomes the root bridge, when available, for this RSTP topology.

Referring to the exhibit, which configuration change should be performed?

A.

Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a priority of 255.

B.

Configure the system MAC on Switch-1 to be higher than the other two switches.

C.

Configure the bridge-priority on Switch-1 as 4k.

D.

Configure the ge-0/0/1 and ge-0/0/8 interfaces on Switch-1 to have a cost of 0.

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