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Juniper JN0-649 Exam Questions
- Topic 1: Interior Gateway Protocols (IGPs): In this topic, Juniper experienced networking professionals explore the core concepts, operations, and functionality of Interior Gateway Protocols. This section emphasizes understanding routing protocols such as OSPF and IS-IS, foundational for effective network operation. It measures knowledge crucial for optimizing IGP configuration and troubleshooting in Juniper-based enterprise environments.
- Topic 2: BGP: This topic enables networking professionals to delve into the concepts, operation, and functionality of BGP. The focus includes scenario-based tasks requiring expertise in configuring, troubleshooting, and monitoring BGP, ensuring robust inter-domain routing.
- Topic 3: IP Multicast: Juniper professionals study IP multicast's concepts, operation, and functionality under this topic. Additionally, scenarios test their ability to configure, troubleshoot, and monitor multicast protocols like IGMP and PIM.
- Topic 4: Ethernet Switching and Spanning Tree: In this topic, experienced networking professionals gain insights into advanced Ethernet switching operations and spanning tree protocols, including MSTP and VSTP. Real-world scenarios test their ability to configure, troubleshoot, and monitor these technologies, essential for enhancing Layer 2 network resilience and scalability.
- Topic 5: Layer 2 Authentication and Access Control: This topic covers the operation of Layer 2 authentication and access control mechanisms like 802.1X. Scenarios evaluate skills in configuring, troubleshooting, and monitoring these features.
- Topic 6: IP Telephony Features: Networking professionals learn the principles and functionality of features facilitating IP telephony deployments. Practical scenarios ensure proficiency in configuring, troubleshooting, and monitoring technologies like PoE and VLAN tagging, enabling seamless voice communication across enterprise networks.
- Topic 7: Class of Service (CoS): This topic focuses on Junos Class of Service for Layer 2/3 networks, addressing traffic prioritization and resource allocation. Scenarios measure proficiency in configuring, troubleshooting, and monitoring CoS policies.
- Topic 8: EVPN: Professionals explore the concepts and functionality of Junos EVPN in this topic, emphasizing its application in scalable, multitenant Layer 2/3 networks. Scenarios test the ability to configure, troubleshoot, and monitor EVPN.
Free Juniper JN0-649 Exam Actual Questions
Note: Premium Questions for JN0-649 were last updated On Aug. 14, 2025 (see below)
You want to provide Layer 2 connectivity between campus sites using Ethernet switches through a metro Ethernet service provider who is using Q-in-Q tagging on their network.
Referring to the exhibit, what are two design considerations in this environment? (Choose two.)
You are asked to troubleshoot voice quality issues on your newly implement VoIP network. You notice that the voice packets are being dropped. You have verified that the packets are correctly marked for expedited forwarding queue.
Referring to the exhibit, what must you configure to solve the problem?
You are asked to establish interface level authentication for users connecting to your network. You must ensure that only corporate devices, identified by MAC addresses, are allowed to connect and authenticate. Authentication must be handled by a centralized server to increase scalability.
Which authentication method would satisfy this requirement?
https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/mac-radius-authentication-switching-devices.html
You can configure MAC RADIUS authentication on an interface that also allows 802.1X authentication, or you can configure either authentication method alone.
If both MAC RADIUS and 802.1X authentication are enabled on the interface, the switch first sends the host three EAPoL requests to the host. If there is no response from the host, the switch sends the host's MAC address to the RADIUS server to check whether it is a permitted MAC address. If the MAC address is configured as permitted on the RADIUS server, the RADIUS server sends a message to the switch that the MAC address is a permitted address, and the switch opens LAN access to the nonresponsive host on the interface to which it is connected.
Referring to the outputs shown in the exhibit, which two statements are correct about the IS-IS adjacency? (Choose two.)
Your enterprise network is running BGP VPNs to support multitenancy. Some of the devices with which you peer BGP do not support the VPN NLRI. You must ensure that you do not send BGP VPN routes to the remote peer.
Which two configuration steps will satisfy this requirement? (Choose two.)
Apply both the VRF export and BGP group or neighbor export policies (VRF first, then BGP) before routes from the vrf or l2vpn routing tables are advertised to other PE routers.
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