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

• Operations, Configuration, and Troubleshooting
• Protocol Independent Routing Properties
• Routing Policy
• Routing Information Protocol (RIP)
• Open Shortest Path First (OSPF)
• Intermediate System to Intermediate System (IS-IS)
• Border Gateway Protocol (BGP)
• Multicast
• Firewall Filters
• Multiprotocol Label Switching (MPLS)

Operation, Configuration, and Troubleshooting

• Describe the function of the Routing Engine.
• Describe the different Juniper ASICs and their functions.
• Identify the packet flow through the Packet Forwarding Engine.
• Define an exception packet.
• Define the portions of the JUNOS software architecture - protected memory spaces; individual daemon process; JUNOS software operating locations.
• Identify valid options for interface names and protocol families within the JUNOS software.
• Identify options for manipulating "saved" configuration files - rollback; load; file locations.
• Describe the boot devices available to a Juniper Networks router.
• Identify the steps involved in the JUNOS software boot sequence.
• Describe the functions of CLI commands used to monitor interfaces.

Protocol Independent Routing Properties

• Describe configuration options for static and aggregate routes.
• Identify the default routing tables and preference values.
• Describe the options available for load-balancing.

Routing Policy

• Describe JUNOS software routing policy design considerations - import; export; terms; match criteria; actions; default actions; policy evaluation.
• List the main reasons to create and apply policies.
• Define the locations within a BGP configuration where a policy may be applied.
• Identify the components of a route-filter and the various match types.
• Evaluate the outcome of a policy.

Routing Information Protocol (RIP)

• Describe the basic characteristics of the RIP protocol.
• Describe the enhancements included in the RIPv2 specification.
• Define the message types used in RIP.
• List the steps required to advertise routes into a RIP network.

Open Shortest Path First (OSPF)

• Define the functions of OSPF packet types.
• Define the functions of OSPF area types.
• Define the functions of OSPF router types.
• Identify the steps required to form an OSPF adjacency.
• Identify the election criteria for an OSPF DR.
• Describe the functions of the DR and BDR.
• Identify CLI commands used to monitor and troubleshoot an OSPF network.

Intermediate System to Intermediate System (IS-IS)

• Define the functions of IS-IS PDUs.
• Describe ISO network addressing as it applies to IS-IS.
• Describe characteristics of IS-IS adjacencies.
• Describe the election of the Designated Intermediate System.
• Describe the steps required to configure IS-IS.
• Identify CLI commands used to monitor and troubleshoot an IS-IS network.

Border Gateway Protocol (BGP)

• Define the basic operation and functionality of BGP.
• Describe the different BGP neighbor states.
• Define the functions of BGP packet types.
• Define the functions of BGP attributes.
• Identify the steps of the BGP Route Selection Algorithm.
• Describe the default action for BGP route advertisements to EBGP and IBGP peers.
• Describe the steps required to configure BGP.
• Identify CLI commands used to monitor and troubleshoot an IS-IS network.

Multicast

• Identify the differences between the operation of a dense-mode and a sparse-mode protocol.
• Define the reverse path forwarding (RPF) process and explain its importance.
• Describe the operation of the IGMP protocol.
• Describe the operation of the PIM protocol.
• Describe PIM-SM RP options - Static; Auto-RP; Bootstrap Router.

Firewall Filters

• Describe Firewall Filter concepts - input; output; match conditions; actions; action modifiers; syntax.
• Identify the differences between a transit filter and a Routing Engine filter.
• Identify CLI commands used to monitor and troubleshoot filter operation.

Multiprotocol Label Switching (MPLS)

• Define the functions of MPLS terms - LSP; LSR; ingress; transit; penultimate; egress.
• Describe the differences between a static and a signaled LSP.
• Define the functions of RSVP attributes.
• Describe the relationship between BGP and MPLS.
• Compare the differences between a strict and a loose ERO.

thanks for your share, can you point out which  part  is more important or not ?