JN0-349 Exam Details

  • Exam Code
    :JN0-349
  • Exam Name
    :Enterprise Routing and Switching, Specialist (JNCIS-ENT)
  • Certification
    :Juniper Certifications
  • Vendor
    :Juniper
  • Total Questions
    :110 Q&As
  • Last Updated
    :Jul 14, 2026

Juniper JN0-349 Online Questions & Answers

  • Question 71:

    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?

    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.

  • Question 72:

    Which statement is correct about access ports?

    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.

  • Question 73:

    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 74:

    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 75:

    You have two routers unable to form an IS-IS Level 1 adjacency.

    Which two statements describe a reason for this problem? (Choose two.)

    A. The MTU is set to 1500.
    B. Interface lo0 is not included as an IS-IS interface.
    C. The area numbers are different.
    D. The interfaces are on different subnets.

  • Question 76:

    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 77:

    Your router is learning the 172.25.11.0/24 prefix from both the BGP and OSPF protocols. A routing policy is configured on your device to advertise the prefix to an established BGP peer but the peer is not receiving the prefix. You want to allow the prefix to be advertised to the BGP peer.

    What should you do on this router to satisfy this requirement?

    A. Enable the automatic removal of peer AS information from the prefix.
    B. Enable the advertisement of inactive BGP routes.
    C. Enable the automatic removal of private AS numbers from the prefix.
    D. Enable the automatic refreshing of BGP routes.

  • Question 78:

    Click the Exhibit Button.

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

    A. The local device has AS 100 configured but the peer is expecting AS 101.
    B. This is an EBGP peering session.
    C. This is an IBGP peering session.
    D. The local device has AS 101 configured but the peer is expecting AS 100.

  • Question 79:

    In which adjacency state do OSPF routers determine which router is in charge of the database synchronization process?

    A. ExStart
    B. Exchange
    C. 2Way
    D. Init

  • Question 80:

    Click the Exhibit button.

    Referring to the exhibit, which port will be selected as the RSTP root port on Switch-4?

    A. ge-0/0/13.0
    B. ge-0/0/8.0
    C. ge-0/0/9.0
    D. ge-0/0/12.0

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