Exam Vouchers: Enterprise Routing and Switching, Specialist (JNCIS-ENT) (JN0-352)

Earn a specialist-level certification that demonstrates competency in networking technology, plus enterprise routing and switching implementations with the Junos operating system. 

One of four certifications in the Enterprise Routing and Switching track, the JNCIS-ENT, specialist is designed for networking professionals wanting to advance their knowledge of routing and switching implementations using the Junos® operating system. During the written exam, you verify your basic understanding of routing and switching technologies and related platform configuration and troubleshooting skills.  

Exam Length: 90 minutes

Exam Type: 65 multiple choice questions

Recertification: Juniper certifications are valid for three years. For mo

Prior to taking this exam students should be able to:

• Identify the concepts, operations, or functionalities of Layer 2 switching for the Junos OS
• Describe the concepts, benefits, or functionalities of VLANs
• Demonstrate knowledge how to configure, monitor, or troubleshoot Layer 2 switching or VLANs
• Describe the concepts, benefits, operations, or functionalities of the Spanning Tree Protocol (STP)
• Demonstrate knowledge on how to configure, monitor, or troubleshoot Spanning Tree
• Describe the concepts, benefits, or operations of various Layer 2 protection or security features
• Describe the concepts, benefits, or operations of Layer 2 firewall filters
• Demonstrate knowledge how to configure, monitor, or troubleshoot Layer 2 security
• Describe the concepts, operations, or functionalities of various protocol-independent routing components
• Demonstrate knowledge how to configure, monitor, or troubleshoot various protocol independent routing components
• Describe the concepts, operations, or functionalities of OSPF
• Demonstrate knowledge how to configure, monitor, or troubleshoot OSPF
• Describe the concepts, operations, or functionalities of IS-IS
• Demonstrate knowledge of how to configure, monitor, or troubleshoot IS-IS
• Describe the concepts, operations, or functionalities of BGP
• Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
• Describe the concepts, requirements, or functionalities of IP tunneling
• Demonstrate knowledge of how to configure, monitor, or troubleshoot IP tunnels
• Describe the concepts, benefits, applications, or requirements for high availability in a Junos OS environment
• Demonstrate knowledge of how to configure, monitor, or troubleshoot high availability components
  

Layer 2 Switching or VLANs

• Bridging components
• Frame processing
• Ports
• Tagging
• Native VLANs and voice VLANs
• Inter-VLAN routing
• Interfaces and ports
• VLANs
• Inter-VLAN routing  

Spanning Tree

• STP and Rapid Spanning Tree Protocol (RSTP) concepts
• Port roles and states
• Bridge Protocol Data Units (BPDUs)
• Convergence and reconvergence
• STP
• RSTP

Layer 2 Security 

• BPDU, loop or root protection
• Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) or IP source guard
• MACsec
• Storm control
• Filter types
• Processing order
• Match criteria and actions
• Protection
• Port security
• Storm control
• Firewall filter configuration and application

Protocol-Independent Routing 

• Static, aggregate, and generated routes
• Martian addresses
• Routing instances, including routing information base (RIB) groups
• Load balancing
• Filter-based forwarding
• Static, aggregate, and generated routes
• Load balancing
• Filter-based forwarding

Open Shortest Path First (OSPF)

• Link-state database
• OSPF packet types
• Router ID
• Adjacencies and neighbors
• Designated router (DR) and backup designated router (BDR)
• Basic single-area LSA information
• Metrics
• Interfaces and neighbors
• Routing policy application
• Troubleshooting tools 

Intermediate System to Intermediate System (IS-IS)

• Link-state database
• IS-IS Protocol Data Units (PDUs)
• Type, length, and values (TLVs)
• Adjacencies and neighbors
• Designated intermediate system (DIS)
• Metrics
• Interfaces and adjacencies
• Additional basic options
• Routing policy application
• Troubleshooting tools 

BGP

• BGP basic operation
• BGP message types
• Attributes
• Route/path selection process
• IBGP and EBGP functionality and interaction
• Groups and peers
• Additional basic options
• Routing policy application
• Troubleshooting tools 

Tunnels

• Tunneling applications and considerations
• Generic Routing Encapsulation (GRE)
• GRE 

High Availability

• Link aggregation groups (LAG)
• Redundant trunk groups (RTG)
• Virtual chassis
• Graceful restart
• Graceful Routing Engine switchover (GRES)
• Nonstop active routing (NSR)
• Nonstop bridging (NSB)
• Bidirectional Forwarding Detection (BFD)
• Virtual Router Redundancy Protocol (VRRP)
• LAG and RTG
• Virtual chassis
• GR, GRES, NSB, and NSR
• VRRP

It is recommended that prior to taking the exam students have followed the following training: 

• Junos OS Intermediate Routing (JIR)
• Junos OS Enterprise Switching (JEX)

Prerequisite Certification: JNCIA-Junos