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  1. Home
  2. Juniper Certification
  3. JN0-649 Exam
  4. Juniper.JN0-649.v2026-03-25.q126 Dumps
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Question 81

Remote branches connect to the corporate WAN through access switches. The access switches connect to access ports on the WAN distribution switch, as shown in the exhibit. L2PT has previously been configured on the tunnel Layer 2 traffic across the WAN. You decide to move the L2PT tunnel endpoints to the access switches. When you apply the L2PT configuration to the access switches, the ports that connect the access switches to the distribution switch shut down.
Which action would solve this problem?

Correct Answer: A
Access interfaces in an L2PT-enabled VLAN should not receive L2PT-tunneled PDUs. If an access interface does receive L2PT-tunneled PDUs, there might be a loop in the network, and the device will shut down the interface. https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/layer-2-protocol-tunneling.html
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Question 82

You have deployed sparce-mode multicast in your network using the IGP metrics shown in the exhibit.

Which path will (*, G) traffic follow form the source to the receiver before the (S, G) state is registered?

Correct Answer: A
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Question 83

A user is attempting to watch a high-definition video being streamed from the media server over the network.
However, the user complains that the experienced video quality is poor. While logged on to router B, a Juniper Networks device, you notice that video packets are being dropped.
In this scenario, what would solve this problem?

Correct Answer: A
When video packets are being dropped, and the network is configured to use the expedited-forwarding forwarding class, it typically indicates that the scheduler assigned to this class does not have sufficient bandwidth to handle the traffic. Adjusting the scheduler to allocate more bandwidth to the expedited-forwarding class will ensure that video packets are transmitted without being dropped.
Steps:
* Identify the scheduler map: First, identify the scheduler map that is applied to the interfaces. This can be done using the following command:
shell
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show configuration class-of-service scheduler-maps
* Adjust the scheduler: Modify the scheduler for the expedited-forwarding forwarding class to support a higher transmit rate. You can edit the scheduler configuration to increase the bandwidth allocated.
Example:
shell
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set class-of-service schedulers expedited-forwarding transmit-rate percent 30
* Apply the configuration: Apply the modified scheduler to the interfaces using the following commands:
shell
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set class-of-service interfaces ge-0/0/0 scheduler-map <scheduler-map-name> set class-of-service interfaces ge-0/0/1 scheduler-map <scheduler-map-name> commit References:
* Useful Juniper Commands.txt
* Tech Ops Managed Router Juniper Install Guide
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Question 84

A BGP network has been designed to provide resiliency and redundancy to a multihomed customer network.
Which two statements are correct in this scenario? (Choose two.)

Correct Answer: A,B
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Question 85

You must provide network connectivity to hosts that fail authentication. In this scenario, what would be used in a network secured with 802.1X to satisfy this requirement?

Correct Answer: B
For a device configured for 802.1X authentication, specify that when the device receives an Extensible Authentication Protocol Over LAN (EAPoL) Access-Reject message during the authentication process between the device and the RADIUS authentication server, supplicants attempting to access the LAN are granted access and moved to a specific bridge domain or VLAN. Any bridge domain, VLAN name or VLAN ID sent by a RADIUS server as part of the EAPoL Access-Reject message is ignored.
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