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  5. Enterprise Routing and Switching - Specialist (JNCIS-ENT) Questions and Answers

JN0-349 Sample Questions Answers

Questions 4

When electing a DIS in an IS-IS network, what is used to break a priority tie?

Options:

A.

highest router ID

B.

highest MAC address

C.

lowest MAC address

D.

lowest router ID

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Questions 5

Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)

Options:

A.

With STP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.

B.

STP uses point-to-point and edge port designations.

C.

With RSTP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.

D.

RSTP uses point-to-point and edge port designations.

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Questions 6

You are running a Virtual Chassis with nonstop routing enabled. You want to confirm that the BGP routing table synchronization has completed on the backup Routing Engine.

Which command will show you this information?

Options:

A.

show task replication

B.

show bgp summary

C.

show bgp neighbor

D.

show bgp replication

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Questions 7

Click the Exhibit button.

Referring to the output shown in the exhibit, which two statements are correct? (Choose two.)

Options:

A.

The device is not an ABR.

B.

The device originated the 192.168.1.2 database entry.

C.

The device originated the 192.168.1.1 database entry.

D.

The device is an ABR.

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Questions 8

You have configured storm control on your network devices. Your network has grown and you no longer have time to investigate each occurrence of a storm control violation. You want to enable a port to automatically be re-enabled after a storm violation.

In this scenario, which Junos OS configuration timeout would accomplish this task?

Options:

A.

Configure the secure access port timeout.

B.

Configure the port error disable timeout.

C.

Configure the BPDU blocking timeout.

D.

Configure the MAG aging table timeout.

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Questions 9

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

Options:

A.

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

B.

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

C.

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

D.

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

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Questions 10

By default, how long will a learned MAC address be retained in the bridge table on an EX Series switch?

Options:

A.

600 seconds

B.

3600 seconds

C.

300 seconds

D.

1800 seconds

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Questions 11

Which statement describes GRES?

Options:

A.

GRES requires NSR to function properly.

B.

GRES provides routing loop protection.

C.

GRES provides hardware-level high availability.

D.

GRES rapidly detects link failures.

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Questions 12

Click the exhibit button.

Switch-1 in the exhibit receives a packet from User A with a destination MAC address of 00:26:88:02:74:47.

Which statement in this scenario is correct?

Options:

A.

Switch-1 sends the packet out ge-0/0/7 only.

B.

Switch-1 sends the packet out ge-0/0/7 and ge-0/0/8.

C.

Switch-1 sends the packet out ge-0/0/6, ge-0/0/7, ge-0/0/8, and ge-0/0/9.

D.

Switch-1 sends the packet out ge-0/0/7, ge-0/0/8, and ge-0/0/9.

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Questions 13

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

Options:

A.

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

B.

Multiple GRE tunnels can be included for each logical unit.

C.

GRE interfaces can include multiple logical units.

D.

GRE interfaces can include only a single logical unit.

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Questions 14

Click the Exhibit button.

Referring to the exhibit, which statement is correct?

Options:

A.

R1 and R2 are elected as DROthers.

B.

R3 has the complete OSPF database.

C.

R3 and R4 have an adjacency state of Full.

D.

R4 is elected as the DR.

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Questions 15

If an EX Series switch receives a frame with a known destination MAC address, what is the expected behavior?

Options:

A.

The frame is sent out all ports assigned to the associated VLAN except the ingress port on which the frame was received.

B.

The frame is sent out all ports assigned to all configured VLANs except the ingress port on which the frame was received.

C.

The frame is sent out all trunk ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table.

D.

The frame is sent out the egress port with a matching destination MAC address within the bridge table associated with the ingress VLAN.

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Questions 16

Which statement is correct about access ports?

Options:

A.

Access ports must have an IRB assigned to accept untagged traffic.

B.

By default, access ports accept only VLAN tagged traffic.

C.

Access ports must have an IRB assigned to accept VLAN tagged traffic.

D.

By default, an access port can have only a single VLAN assigned.

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Status:
Expired , and Replaced By
Exam Code: JN0-349
Exam Name: Enterprise Routing and Switching - Specialist (JNCIS-ENT)
Last Update: Sep 22, 2023
Questions: 110
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