Free PDF Juniper - The Best Latest JN0-650 Study Notes

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Juniper JN0-650 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Layer 2 Authentication and Access Control: This domain examines network access control mechanisms including 802.1x, MAC RADIUS, captive portal, server fail fallback, guest VLANs, and multi-method authentication considerations.
Topic 2
  • IP Telephony Features: This section focuses on features supporting VoIP deployments including Power over Ethernet, LLDP
  • LLDP-MED protocols, and voice VLAN implementation.
Topic 3
  • Class of Service (CoS): This domain covers QoS mechanisms in Junos including CoS processing, header fields, forwarding classes, classification, policers, schedulers, drop profiles, shaping, and rewrite rules.
Topic 4
  • Interior Gateway Protocols (IGPs): This domain covers internal routing protocols operating within a single autonomous system, including OSPFv2, OSPFv3, and routing policy implementation, along with configuration, troubleshooting, and monitoring skills.

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Valid JN0-650 Preparation Materials and JN0-650 Guide Torrent: Enterprise Routing and Switching, Professional (JNCIP-ENT) - PrepAwayETE

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Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q68-Q73):

NEW QUESTION # 68
The network you support currently has a mixture of MC-LAG and Virtual Chassis being used to provide redundant connectivity from various IDFs. A project to modernize the architecture and move to EVPN- VXLAN using ESI-LAG will be starting soon. You want to avoid IDFs losing connectivity as the core devices are migrated to EVPN-VXLAN. Which action will accomplish this task?

Answer: C

Explanation:
In an EVPN-VXLAN environment using ESI-LAG (Ethernet Segment Identifier Link Aggregation) , the Core Isolation feature is a safety mechanism designed to prevent traffic blackholing. When a leaf switch (acting as a VTEP) loses its BGP peering or its link to the IP fabric core, it assumes it is " isolated " from the rest of the network. To protect the network, the switch automatically shuts down its local member links of any multi-homed ESI-LAG to force traffic to the peer switch that still has core connectivity.
However, during a migration or in specific transitional topologies where the core might be temporarily unreachable or not yet fully established, this feature can cause the leaf switches to shut down all downstream IDF (Intermediate Distribution Frame) connections, leading to a total loss of connectivity.
* The Solution (Option C): By enabling the no-core-isolation statement under the [edit protocols evpn] hierarchy, you instruct the switch to disable this automatic shutdown behavior . This ensures that even if the BGP session or core links are not yet stable during the migration process, the ESI-LAG interfaces remain Up , allowing the IDFs to maintain connectivity to their local default gateways or other local resources.
* Why others are incorrect: Enabling EVPN-VXLAN before migration (Option A) does not address the isolation logic. Removing MC-LAG/Virtual Chassis links prematurely (Option B) would cause an immediate outage. The network-isolation-profile (Option D) is typically used for different loop prevention scenarios and does not override the specific core-isolation check that affects multi-homed ESIs.


NEW QUESTION # 69
You are adding VNI 101 to your EVPN-VXLAN network, but traffic is not being sent to received.

Referring to the exhibit, which configuration statement will solve the problem?

Answer: A


NEW QUESTION # 70
Exhibit

You configured MVRP in your Layer 2 network using the configuration shown in the exhibit. You verified that the appropnate VLANs are configured and applied on the two access switches. You are using RSTP as your loop prevention mechanism. Unfortunately, the users are not able to communicate with their corresponding server attached to the Access-2 switch.
In this scenario, what should you do to solve this problem?

Answer: D

Explanation:
The exhibit shows a network topology where Multiple VLAN Registration Protocol (MVRP) is used to dynamically manage VLANs across switches Core-1, Access-1, and Access-2.
Identifying the Missing Configuration: According to the diagram, the trunk link between Core-1 and Access-2 uses interface ge-0/0/16.0 on the Core-1 side.
Output Analysis: However, the show protocols mvrp output for Core-1 only lists interfaces ge-0/0/14.0 and ge-
0/0/15.0.
MVRP Requirements: For MVRP to successfully propagate VLAN information between Access-2 and the rest of the network, the protocol must be enabled on every trunk interface in the path.
Solution: Because ge-0/0/16.0 is missing from the Core-1 MVRP configuration, VLAN registration messages from Access-2 are not being processed by Core-1. Configuring this interface under MVRP on Core-1 will solve the communication problem.


NEW QUESTION # 71
Your existing enterprise network uses OSPFv3 on Juniper devices. You need to extend the networking into a new building, and it needs to be in its own OSPF area. Your team is debating about making the area a stub Which two statements are correct in this scenario? (Choose two.)

Answer: C,D


NEW QUESTION # 72
You are implementing the route summarization feature of OSPF.
Which two results do you achieve in this scenario? (Choose two.)

Answer: C,D


NEW QUESTION # 73
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