Examens: Juniper Enterprise Routing and Switching Professional (JNCIP-ENT) (JN0-648)

Designed for experienced networking professionals with advanced knowledge of the Juniper Networks Junos OS, this written exam verifies the candidate’s understanding of advanced routing technologies and related platform configuration and troubleshooting skills.

JNCIP-ENT exam topics are based on the content of the recommended instructor-led training courses, as well as additional resources.

• Exam code: JN0-648
• Written exam
• Administered by Pearson VUE
• Exam length: 120 minutes
• Exam type: 65 multiple-choice questions
• Pass/fail status is available immediately
• Software Release:
  • Junos Software: 19.3

The Contents list provides a general view of the skill set required to successfully complete the specified certification exam

Describe the concepts, operation, or functionality of Interior Gateway Protocols (IGPs)

• IS-IS
• OSPFv2 and OSPFv3
• Routing Policy
• Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs

Describe the concepts, operation, or functionality of BGP

• BGP route selection process
• Next hop resolution
• BGP attributes: concept and operation
• BGP communities
• Regular expressions
• Load balancing - multipath, multihop, forwarding table
• NLRI families: inet and inet6
• Advanced BGP options
• Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP
• Implement BGP routing policy

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 and IGMP snooping
• PIM dense-mode and sparse-mode
• Rendezvous point (RP): concept, operation, discovery, and election
• SSM: requirements, benefits, address ranges
• Anycast RP
• MSDP
• Routing policy and scopingGiven a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IP multicast
• IGMP, PIM-DM, or PIM-SM (including SSM)
• Implement IP multicast routing policy

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
• Junos Fusion Enterprise
• 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
• Private VLANs
• Dynamic VLAN registration using MVRP
• Tunnel Layer 2 traffic through Ethernet networks
• Junos Fusion Enterprise
• 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

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

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

Describe the concepts, operation, or functionality of Junos CoS for Layer 2 or 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

Describe the concepts, operation, or functionality of Junos EVPN

• VXLAN
• Multi-homing (for example, active route types)
• Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN