Exam Details

  • Exam Code
    :JN0-343
  • Exam Name
    :Juniper Networks Certified Internet Specialist (JNCIS-ENT)
  • Certification
    :Juniper Certifications
  • Vendor
    :Juniper
  • Total Questions
    :563 Q&As
  • Last Updated
    :Jun 12, 2025

Juniper Juniper Certifications JN0-343 Questions & Answers

  • Question 71:

    Which two statements about RSTP are correct? (Choose two.)

    A. RSTP permits multiple root bridges within a Layer 2 domain.

    B. RSTP permits only a single root bridge within a Layer 2 domain.

    C. RSTP is backwards compatible with STP.

    D. RSTP is not backwards compatible with STP.

  • Question 72:

    What are three extended BGP communities? (Choose three.)

    A. target:65000:65000

    B. domain-id:192.168.1.1:155

    C. 172.16.90.100:888

    D. extend:454:350

    E. origin:172.16.100.100:100

  • Question 73:

    Your ISP reports that you are being sent a route prefix but you cannot see it in your routing table.

    Which two commands will help? (Choose two.)

    A. show route advertising-protocol bgp

    B. show route detail

    C. show route protocol bgp hidden

    D. show route receive-protocol bgp

  • Question 74:

    Based on the output shown in the exhibit, which statement is correct? user@router> show ospf neighbor AddressInterfaceState IDRri Dead 172.16.248.214xe-0/0/2.02-Way 172.16.248.1412839

    A. The router is acting as the BDR.

    B. The router is acting as the DR.

    C. The router is not able to establish an adjacency.

    D. The router is acting as a DROther.

  • Question 75:

    -- Exhibit -[edit]

    user@router# show protocols ospf

    traffic-engineering advertise-unnumbered-interfaces;

    area 0.0.0.0 {

    interface all;

    }

    [edit]

    user@router# show interfaces

    ge-0/0/0 {

    unit 0 {

    family inet {

    address 172.16.12.15/24;

    }

    }

    }

    ge-1/0/0 {

    unit 0 {

    family inet {

    address 66.129.12.1/24;

    }

    }

    }

    lo0 {

    unit 0 {

    family inet {

    address 127.0.0.5/32;

    }

    }

    }

    [edit]

    user@router# show routing-options

    route-distinguisher-id 130.0.0.28;

    -- Exhibit -Referring to the exhibit, which address represents the RID?

    A. 66.129.12.1

    B. 172.16.12.15

    C. 127.0.0.5

    D. 130.0.0.28

  • Question 76:

    You are implementing a Layer 3 VPN on a Junos device.

    Which routing instance type would you use?

    A. virtual router

    B. VRF

    C. VPLS

    D. forwarding

  • Question 77:

    A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route. Referring to the exhibit, which route would be selected?

    Route

    MED

    Origin Code

    Local Preference

    A I B ? C E D I

    A. route A

    B. route D

    C. route B

    D. route C

  • Question 78:

    You want to enable IS-IS on your Junos device, with ge-0/0/1 as a Level 2 only interface. Which commands are necessary?

    A. set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso set protocols isis interface ge-0/0/1 level 1 disable

    B. set protocols isis interface ge-0/0/1 enable set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 1 disable

    C. set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 2

    D. set protocols isis interface ge-0/0/1 enable set interfaces lo0 unit 0 family iso address 49.0001.0921.0168.0201.00 set interfaces ge-0/0/1 unit 0 family iso level 2

  • Question 79:

    Which mechanism is used to share routes between routing tables?

    A. routing instances

    B. forwarding instances

    C. filter-based forwarding

    D. RIB groups

  • Question 80:

    An EBGP session sources its TCP connection from which IP address?

    A. The IP address of the primary address assigned to the loopback interface.

    B. The IP address assigned as the router ID.

    C. The IP address of the interface that connects the two BGP speakers.

    D. The IP address of the preferred address assigned to the loopback interface.

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