Exam Code : JN0-650
Prerequisite Certification : JNCIS-ENT
Delivered by Pearson : VUE
Exam Length : 90 minutes
Exam Type : 65 multiple-choice questions
Software Versions : Junos OS v25.2
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
Advanced Junos Enterprise Switching
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
OSPFv2
OSPFv3
Routing Policy
Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs
BGP
Describe the concepts, operation, or functionality of BGP
BGP route selection process
Next hop resolution
BGP attributes: concept and operation
BGP communities
Load balancing – multipath, multihop, forwarding table
Network Layer Reachability Information (NLRI) families—inet, inet6
Advanced BGP options
Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP
Implement BGP routing policy
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)
Reverse Path Forwarding (RPF)—concept and operation
Internet Group Management Protocol (IGMP), IGMP snooping
Protocol Independent Multicast (PIM) sparse-mode
Rendezvous point (RP)—concept, operation, discovery, election
Anycast RP
Multicast Source Discovery Protocol (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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Sample Question and Answer
QUESTION 1
Exhibit.
You want to limit port access to only one device at a time.
Referring to the exhibit, which configuration change will accomplish this task?
A. Enable MAC RADIUS restrict.
B. Change the supplicant mode to multiple.
C. Change the supplicant mode to single-secure.
D. Change the maximum EAPOL request to l.
Answer: C
Explanation:
QUESTION 2
Your OSPF network consists of a mix of 1GbE and 10GbE interfaces. By default, all interfaces have the
same cost in your OSPF network. You are asked to ensure that the 10GbE interfaces are more preferred when available
In this scenario, which two statements would accomplish this behavior? (Choose two.)
A. You should define the reference bandwidth as 10G. which will assign the 1GbE interfaces a higher cost
B. You should manually assign the interface metric for each 10GbE interface to be higher than the 1GbE interfaces in your OSPF network.
C. You should define the reference bandwidth as 1G. which will assign the 1GbE interfaces a higher cost.
D. You should manually assign the interface metric for each 1GbE interface to be higher than the 10GbE interfaces in your OSPF network.
Answer: A, D
Explanation:
QUESTION 3
You have two multicast receivers connected to the same VLAN. You notice that the switch that they
are connected to is forwarding multicast traffic out of all the ports in the same VLAN, instead of just
the two ports for the connected multicast receivers
In this scenario, what would you configure to optimize multicast forwarding?
A. promiscuous mode
B. spanning tree
C. IGMP snooping
D. IRB interface
Answer: C
Explanation:
QUESTION 4
You are implementing an EVPN-VXLAN edge-routed bridging design using Layer 3 gateway
operations. In this scenario, which statement is correct?
A. Each distribution switch has unique IP addresses for IRB interfaces; routing protocols run on IRB interfaces
B. Distribution switches share the same anycast IP addresses for IRB interfaces; routing occurs at the distribution layer.
C. Only core switches have IRB interfaces; all Layer 3 routing happens in the core.
D. IRB interfaces are disabled; all routing happens through external routers only.
Answer: B
Explanation:
QUESTION 5
Which statement about LLDP and LLDP-MED operations on EX Series devices is correct?
A. LLDP only operates on interfaces configured for Layer 2
B. EX Series devices flood LLDP frames across a Layer 2 domain to calculate a network topology
C. EX Series devices support LLDP-MED power negotiation, enabling dynamic allocation of PoE power based on endpoint device needs.
D. LLDP-MED focuses on discovering network connectivity devices like routers and switches.
Answer: C