JNCIS-ENT JN0-348 Practice Exam
JNCIS-ENT JN0-348
About JNCIP-ENT JN0- 348 Exam
JN0-348 exam is a track designed to allow participants to demonstrate competence with advanced data center technologies and related configuration and troubleshooting skills. Successful candidates demonstrate advanced knowledge of the Junos OS used in a data center environment.
Target Audience
The exam is designed for experienced networking professionals with beginner to intermediate knowledge of routing and switching implementations in Junos. The written exam verifies the candidate’s basic understanding of routing and switching technologies and related platform configuration and troubleshooting skills.
Prerequisite for the exam
Candidates who wish to appear for JN0-348 exam are required to pass JNCIA-Junos certification exam.
Course Structure
1. Layer 2 Switching or VLANs
Identify the concepts, operation, or functionality of Layer 2 switching for the Junos OS
• Bridging components
• Frame processing
Describe the concepts, benefits, or functionality of VLANs
• Ports
• Tagging
• Native VLANs and voice VLANs
• Inter-VLAN routing
Demonstrate knowledge how to configure, monitor or troubleshoot Layer 2 switching or VLANs
• Interfaces and ports
• VLANs
• Junos Network Director
• Inter-VLAN Routing
2. Spanning Tree
Describe the concepts, benefits, operation, or functionality of the Spanning Tree Protocol
• STP and RSTP concepts
• Port roles and states
• BPDUs
• Convergence and reconvergence
Demonstrate knowledge how to configure, monitor, or troubleshoot STP and RSTP
• STP
• RSTP
3. Layer 2 Security
Identify the concepts, benefits or operation of various Layer 2 protection or security features
• BPDU, loop or root protection
• Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) or IP source guard
• MACsec
• Storm control
Identify the concepts, benefits or operation of Layer 2 firewall filters
• Filter types
• Processing order
• Match criteria and actions
Demonstrate knowledge how to configure, monitor, or troubleshoot Layer 2 security
• Protection
• Port security
• Storm control
• Firewall filter configuration and application
4. Protocol Independent Routing
Identify the concepts, operation or functionality of various protocol-independent routing components
• Static, aggregate, and generated routes
• Martian addresses
• Routing instances, including RIB groups
• Load balancing
• Filter-based forwarding
Demonstrate knowledge how to configure, monitor, or troubleshoot various protocol-independent routing components
• Static, aggregate, and generated routes
• Load balancing
• Filter-based forwarding
5. OSPF
Describe the concepts, operation or functionality of OSPF
• Link-state database
• OSPF packet types
• Router ID
• Adjacencies and neighbors
• Designated router (DR) and backup designated router (BDR)
• OSPF area and router types
• Realms
• LSA packet types
Demonstrate knowledge how to configure, monitor or troubleshoot OSPF
• Areas, interfaces and neighbors
• Additional basic options
• Routing policy application
• Troubleshooting tools (e.g., ping, traceroute,trace options, show commands, logging)
6. IS-IS
Describe the concepts, operation or functionality of IS-IS
• Link-state database
• IS-IS PDUs
• TLVs
• Adjacencies and neighbors
• Levels and areas
• Designated intermediate system (DIS)
• Metrics
Demonstrate knowledge of how to configure, monitor or troubleshoot IS-IS
• Levels, interfaces and adjacencies
• Additional basic options
• Routing policy application
• Troubleshooting tools (e.g., ping, traceroute, trace options, show commands, logging)
7. BGP
Describe the concepts, operation or functionality of BGP
• BGP basic operation
• BGP message types
• Attributes
• Route/path selection process
• IBGP and EBGP functionality and interaction
Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
• Groups and peers
• Additional basic options
• Routing policy application
• Troubleshooting tools (e.g., ping, traceroute,trace options, show commands, logging)
8. Tunnels
Identify the concepts, requirements or functionality of IP tunneling
• Tunneling applications and considerations
• GRE/UDP
• IP-IP
Demonstrate knowledge of how to configure, monitor or troubleshoot IP tunnels
• GRE/UDP
• IP-IP
• Troubleshooting tools (e.g., ping, traceroute, trace options, show commands, logging)
9. High Availability
Identify the concepts, benefits, applications or requirements for high availability in a Junos OS environment
• Link aggregation groups (LAG)
• Redundant trunk groups (RTG)
• Virtual Chassis
• Graceful restart (GR)
• Graceful Routing Engine switchover (GRES)
• Nonstop active routing (NSR)
• Nonstop bridging (NSB)
• Bidirectional Forwarding Detection (BFD)
• Virtual Router Redundancy Protocol (VRRP)
• Unified In-Service Software Upgrade (ISSU)
Demonstrate knowledge of how to configure, monitor, or troubleshoot high availability components
• LAG and RTG
• Virtual Chassis
• GR, GRES, NSB, and NSR
• VRRP
• ISSU
• Troubleshooting tools (e.g., trace options, show commands, logging)
Exam Pattern
- Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
- Exam Code: JN0-348
- Number of Questions: 65
- Length of Time: 90 Minutes
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