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Resources - JNCIA-ER Exam Objectives (Exam: JN0-342)

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.

Enterprise Router Overview, Management, and Architecture

  • Describe network management features of Enterprise Routers
  • Define the portions of the JUNOS software architecture. Include information on protected memory spaces, individual daemon process, and locations where the JUNOS software may operate.
  • List the Enterprise Router Product Line
  • Describe Transit and Host Processing
  • Identify the difference between packet flow on the M7i/M10i and J-series routers
  • Identify key differences between the M7i/M10i and J-series routers
  • Identify Field-Replaceable Units on M7i/M10i and J-series routers

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User Interface of Enterprise Routers

  • List the various user authentication methods
  • Describe the uses of login classes
  • Describe authentication order
  • Describe the way to access and navigate the J-Web interface
  • Identify J-Web installation and operational status
  • Identify the features of the JUNOS CLI. (cli modes, prompts, auto-complete, EMACS shortcuts, help, pipe)
  • Identify the commands used in configuration mode (edit, set, delete, commit)
  • Identify options for manipulating "saved" configuration files. Include rollback options, load options, and rollback file locations
  • Describe the configuration hierarchy
  • Describe active, candidate, and rollback configurations

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Installation and Initial Configuration

  • Define autoinstallation and describe its basic operation
  • Describe how to activate the rescue and default configurations
  • Identify Initial configuration steps via J-web (user accounts, SNMP, time, DNS, remote access)
  • Identify Initial configuration steps via the CLI (user accounts, SNMP, time, DNS, remote access)
  • Configure an interface (CLI and J-Web)
  • List options for initial configuration and platform dependencies of those options.

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Monitor and Maintain J-series Platforms

  • Identify the commands to monitor enterprise router system components (CLI and J-Web)
  • Identify the commands to monitor enterprise router Chassis (CLI and J-Web)
  • Identify valid options for interface names, logical unit and protocol families within the JUNOS software
  • Describe how to monitor interfaces in real-time
  • Describe the information contained within the show interfaces extensive command
  • Describe the uses of network utilities such as ping and traceroute
  • Describe system logging and tracing
  • Identify Commands needed to manage the licenses on a J-series
  • Describe the boot devices available to a Juniper Networks router
  • List the upgrade options available for the router's software
  • Identify the system snapshot options
  • Perform file system maintenance on the router.
  • Perform password recovery on the router.

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Routing Protocols

  • Describe JUNOS software routing policy design considerations including: import and export, when to define routing policies, components of a routing policy (terms, match criteria, actions), default routing policy actions, and how routing policies are evaluated.
  • List the main reasons to create and apply policies.
  • Describe the configuration of Static Routes
  • Describe the basic characteristics of the RIP protocol
  • Identify the steps needed to configure RIP
  • Identify commands used to monitor and troubleshoot an RIP network.
  • Describe OSPF area types and router types
  • Identify the steps needed to configure OSPF
  • Identify commands used to monitor and troubleshoot an OSPF network.
  • Describe charecteristics of link-state routing protocols
  • Describe the purpose and operation of multiple routing tables
  • Describe route preferences
  • List the support IGPs and describe the purpose and benefits of each.

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Services

  • List the available interfaces used for services and describe the benefits and features for each type
  • Describe the purpose and benefits of MLPPP
  • Identify MLPPP configuration and monitoring options
  • Describe the purpose and benefits of NAT and PAT
  • Identify NAT and PAT configuration and monitoring options

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Miscellaneous Features

  • Describe the benefits and basic operation of VRRP
  • Identify configuration and monitoring options of VRRP
  • Describe the benefits and basic operation of DHCP
  • Identify configuration and monitoring options for DHCP

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