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Juniper JN0-649 Exam Syllabus Topics:

Topic	Details
Topic 1	Demonstrate knowledge of how to configure, troubleshoot, or monitor CoS for Layer 2 or 3 networks CoS processing on Junos devices
Topic 2	Components of IP multicast, including multicast addressing IP multicast traffic flow Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
Topic 3	Describe the concepts, operation, or functionality of BGP Describe the concepts, operation, or functionality of IGPs
Topic 4	Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN Describe the concepts, operation, or functionality of Junos EVPN
Topic 5	Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP BGP route selection process
Topic 6	Describe the concepts, operation, or functionality of Junos CoS for Layer 2 3 networks Power over Ethernet (PoE)
Topic 7	Demonstrate knowledge of how to configure, troubleshoot, or monitor MSTP or VSTP Describe the concepts, operation or functionality of advanced Ethernet switching

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Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q52-Q57):

NEW QUESTION # 52
You are configuring MSTP to prevent loops in your Layer 2 network. After applying the configuration, you notice that MSTO is not working correctly.

Referring to the exhibit, what is causing the problem?

• A. MSTI-to-VLAN mappings must be the same.
• B. Incorrect revision number is used.
• C. Too many VLANs have been defined.
• D. Context identifier must be specified.

Answer: A
NEW QUESTION # 53
You are deploying IP phones to a customer site. The IP phones will be installed to share a common access port with the user's desktop computer. You are required to provide a mechanism to place user data traffic and voice traffic in different VLANs for class-service application How would you implement this solution?

• A. Configure the IP phones to label voice traffic with the DSCP of code point and apply a BA classifier to the access ports to classify voce traffic
• B. Apply a multifield classifier on the access ports that assigns voice packets to the assured forwarding class, based on the IP phone manufacturer's MAC QUI
• C. Configure flexible VLAN tagging on the user ports with the data and voice VLANs as members
• D. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign lagged frames to the voice VLAN and untagged frames to a data VLAN

Answer: D
NEW QUESTION # 54
You are configuring, the PVLAN feature on your switches. The PVLAN will span the two EX Series switches shown in the exhibit.
Which three configuration parameters must be enabled on the ports connecting the two switches?
(Choose three. )

• A. family Ethernet-switching
• B. inter-switch-link
• C. interface-mode trunk
• D. family inet
• E. interface-mode access

Answer: A,B,C
NEW QUESTION # 55
You have configured CoS on a Junos device. A packet is classified as best effort by a behavior aggregate (BA) classifier, and as expedited forwarding by a multifield (MF) classifier.
Which statement is true in this scenario?

• A. The packet will be placed in a queue associated with the BA classifier.
• B. The packet will be placed into the queue which is least congested.
• C. The packet will be placed into the queue that has the most bandwidth assigned to it.
• D. The packet will be placed in a queue associated with the MF classifier.

Answer: D Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/cos-configuring- multifield-classifiers.html
>> "If you configure both a behavior aggregate (BA) classifier and a multifield classifier, BA classification is performed first; then multifield classification is performed. If they conflict, any BA classification result is overridden by the multifield classifier."
NEW QUESTION # 56
Which statement is correct about IS-IS?

• A. Level 1/2 routers automatically inject a default route to the nearest Level 1 router.
• B. Level 2 routers must share the same area address.
• C. IS-IS uses areas and an autonomous system.
• D. Level 1 routers route traffic between autonomous systems.

Answer: C Explanation:
Level 1/2 routers automatically inject a default route to the nearest Level 1 router. It's the other way around
NEW QUESTION # 57
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