JN0-647 Enterprise Routing and Switching Exam

This list provides a general view of the skill set required to successfully complete the specified certification exam. Topics listed are subject to change.

Interior Gateway Protocols (IGPs)
BGP
IP Multicast
Ethernet Switching and Spanning Tree
Layer 2 Authentication and Access Control
IP Telephony Features
Class of Service (CoS)

Interior Gateway Protocols (IGPs)

Describe the concepts, operation or functionality of IGPs
IS-IS
RIP
OSPFv2 and 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
Regular expressions
Load balancing – multipath, multihop, forwarding table
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)
RPF – concept and operation
IGMP, IGMP snooping
PIM dense-mode and sparse-mode
Rendezvous point (RP) – concept, operation, discovery, election
SSM – requirements, benefits, address ranges
Anycast RP
MSDP
Routing policy and scoping
Given 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

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
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

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 2/3 networks

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QUESTION 1
You are configuring a scheduler map on an EX9200 Series device. You want to ensure that traffic is dropped in a policing action once traffic exceeds the configured transit rate.
Which configuration parameter will meet this requirement?

A. exact
B. rate-limit
C. remainder
D. percent

Answer: B

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QUESTION 2
Which two statements are true about PIM source-specific multicast (SSM)? (Choose two.)

A. The receiver DR builds a source-base tree to the RP.
B. S, G is always used.
C. A Different group address must be used by each source.
D. IGMPv3 is required.

Answer: B,D

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QUESTION 3
Which statement is correct about CoS policers on Junos devices?

A. Traffic that exceeds a policer’s traffic profile can be dropped or assigned to aspecific drop profile.
B. A policer can assign in-profile traffic to a specific forwarding class.
C. A policer does not alter in-profile traffic.
D. Policers can be configured to buffer traffic that exceeds the policer’s traffic profile.

Answer: C

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QUESTION 4
Which statement is correct about MSTP?

A. MSTP enables mapping multiple independent spanning-tree instances onto one physical topology.
B. MSTP enables dynamic discovery of Layer 2 neighbors.
C. MSTP dynamically manages VLAN registration in a LAN.
D. MSTP uses stacked VLAN tags to extend a Layer 2 Ethernet connection between multiple sites.

Answer: A

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QUESTION 5
Which type of BGP is used to peer with a different autonomous system?

A. external
B. classless
C. dynamic
D. static

Answer: A

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