Exam: JN0-649
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Exam Code : JN0-649
Prerequisite Certification : JNCIS-ENT
Delivered by : Pearson VUE
Exam Length : 90 minutes
Exam Type : 65 multiple-choice questions
Software Versions : Junos OS 21.2
Recertification
Juniper certifications are valid for three years. For more information, see
Recertification.
Exam Details
Exam questions are derived from the recommended training and the exam
resources listed above. Pass/fail status is available immediately after taking
the exam. The exam is only provided in English.
Exam Preparation
We recommend the following resources to help you prepare for your exam.
However, these resources aren’t required, and using them doesn’t guarantee
you’ll pass the exam.
Recommended Training
Advanced Junos Enterprise Routing (AJER)
Advanced Junos Enterprise Switching (AJEX)
Exam Resources
Industry/product knowledge
Juniper TechLibrary
Additional Preparation
Juniper Learning Portal
Exam Objectives
Here’s a high-level view of the skillset required to successfully complete
the JNCIP-ENT certification exam.
| Exam Objective | Description |
|
Interior Gateway Protocols (IGPs) |
Describe the concepts, operation, or functionality of IGPs IS-IS OSPFv2 and OSPFv3 Routing Policy Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs |
| BGP |
|
|
IP Multicast |
Describe the concepts, operation, or functionality of IP multicast Components of IP multicast, including multicast addressing IP multicast traffic flow Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM) RPF - concept and operation IGMP, IGMP snooping PIM sparse-mode Rendezvous point (RP) - concept, operation, discovery, election Anycast RP MSDP Routing policy and scoping Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IP multicast IGMP, PIM-SM (including SSM) Implement IP multicast routing policy |
|
Ethernet Switching and Spanning Tree |
Describe the concepts, operation or functionality of advanced Ethernet
switching Filter-based VLANs Private VLANs Dynamic VLAN registration using MVRP Tunnel Layer 2 traffic through Ethernet networks Layer 2 tunneling using Q-in-Q and L2PT Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor advanced Ethernet switching Filter-based VLANs Dynamic VLAN registration using MVRP Tunnel Layer 2 traffic through Ethernet networks Layer 2 tunneling using Q-in-Q and L2PT Describe the concepts, operation, or functionality of advanced spanning tree protocols, including MSTP or VSTP. Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor MSTP or VSTP. |
| Layer 2 Authentication and Access Control |
Describe the operation of various Layer 2 authentication or access control
features Authentication process flow 802.1x - concepts and functionality MAC RADIUS Captive portal Server fail fallback Guest VLAN Considerations when using multiple authentication/access control methods Given a scenario, demonstrate how to configure, troubleshoot, or monitor Layer 2 authentication or access control. |
| IP Telephony Features |
Describe the concepts, operation or functionality of features that
facilitate IP telephony deployments Power over Ethernet (PoE) LLDP and LLDP-MED Voice VLAN Given a scenario, demonstrate how to configure, troubleshoot, or monitor features used to support IP telephony deployments. |
| Class of service (CoS) |
Describe the concepts, operation, or functionality of Junos CoS for Layer
2/3 networks CoS processing on Junos devices CoS header fields Forwarding classes Classification Packet loss priority Policers Schedulers Drop profiles Shaping Rewrite rules Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor CoS for Layer 2 or 3 networks. |
| EVPN |
Describe the concepts, operation, or functionality of Junos EVPN Route types (e.g., Type 1, 2 3) VXLAN Multi-homing (e.g., active route types) Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN. |
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QUESTION 1
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?
A. MAC RADIUS
B. captive portal
C. 802.1X with single-secure supplicant mode
D. 802.1X with multiple supplicant mode
Answer: A
QUESTION 2
You enable the Multiple VLAN Registration Protocol (MVRP) to automate the
creation and management of virtual LANs.
Which statement is correct in this scenario?
A. The forbidden mode does not register or declare VLANs.
B. When enabled, MVRP affects all interfaces.
C. Timers dictate when link state changes are propagated.
D. MVRP works with RSTP and VSTP.
Answer: B
QUESTION 3
Which address range is used for source-specific multicast?
A. 239.0.0.0
B. 233.0.0.0
C. 232.0.0.0
D. 224.2.0.0
Answer: C
QUESTION 4
Which three configuration parameters must match on all switches within the
same MSTP region? (Choose three.)
A. VLAN to instance mapping
B. revision level
C. configuration name
D. bridge priority
E. region name
Answer: B, C, E
QUESTION 5
Which two statements are correct about the deployment of EVPN-VXLAN on QFX
Series devices? (Choose two.)
A. Type 1 route advertisements always have the single-active flag set to 1.
B. Junos OS supports underlay replication for BUM traffic forwarding.
C. Junos OS supports ingress replication for BUM traffic forwarding.
D. Type 1 route advertisements always have the single-active flag set to 0.
Answer: B, C
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