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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 Apr. 16, 2025 (see below)
You enable the Multiple VLAN Registration Protocol (MVRP) to automate the creation and management of virtual LANs.
Which statement is correct in this scenario?
The forbidden mode does not register or declare VLANs. You can change the registration mode of a specific interface to forbidden. An interface in forbidden registration mode does not participate in MVRP even if MVRP is enabled on the switch.
https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/mvrp.html
MVRP is disabled by default on the switches and, when enabled, affects only trunk interfaces. Once you enable MVRP, all VLAN interfaces on the switch belong to MVRP (the default normal registration mode) and those interfaces accept PDU messages and send their own PDU messages. forbidden---The interface does not register or declare VLANS (except statically configured VLANs).
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.)
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?
Which two multicast listener registration protocols are supported in the Junos operating system? (Choose two.)
internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) are the Multicast Group Membership Discovery (MGMD) protocols
Which three configuration parameters must match on all switches within the same MSTP region? (Choose three.)
When enabling MSTP, you define one or more MSTP regions. An MSTP region defines a logical domain where multiple spanning-tree instances (MSTIs) can be administered independently of MSTIs in other regions, setting the boundary for bridge protocol data units (BPDUs) sent by one MSTI. An MSTP region is a group of switches that is defined by three parameters:
Region name---User-defined alphanumeric name for the region.
Revision level---User-defined value that identifies the region.
Mapping table---Numerical digest of VLAN-to-instance mappings.
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