- Exam: JN0-348 (Enterprise Routing and Switching, Specialist)
- Certification: JNCIS-ENT (Enterprise Routing and Switching, Specialist (JNCIS-ENT))
- Certification Provider: Juniper
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The Specialist JNCIS-ENT certification concerns the verification of a candidate’s basic-level comprehension of technologies that relate to routing & switching solutions used within the enterprise. It also checks if one can configure and troubleshoot networks.
More about Juniper’s Accreditation Track
Juniper’s accreditation track includes four levels, namely, Associate, Specialist, Professional, and Expert. JNCIS-ENT is for Enterprise Routing and Switching, Specialist. Apart from the Routing and Switching path, applicants can choose certifications from the seven more areas availed by Juniper. These are Automation & DevOps, Cloud, Design, Data Center, Junos Security, Mist AI, and Service Provider Routing & Switching.
Right Candidates and Prerequisites They Should Meet
The target audience for this certificate includes beginners as well as those with an intermediate knowledge in implementing routing & switching solutions in Junos. Also, those seeking to go through the certification process for JNCIS-ENT should have already obtained the associate JNCIA-JUNOS certification. Finally, to become JNCIS-ENT accredited, individuals are obligated to pass JN0-348 exam.
JNCIS-ENT Exam Details and the Domains Covered
Test JN0-348 assesses one’s aptness of the topics disclosed further using 65 MCQs with a completion time of 1.5 hours. The cost of the exam is $300. It’s good to note that regarding Juniper tests, there are no published scores. Listed below are more details of each of the topics involved in the JNCIS-ENT syllabus:
- Layer 2 Switching or VLANs
Issues addressed under this section include concepts, functionality, and operation of the Junos OS Layer 2 switching, as well as bridging components and frame processing. Also, one should learn more about the benefits of VLANs, which covers ports, tagging, native as well as voice VLANs, and inter-VLAN routing. Another topic to be mastered is focused on the configuration, monitoring, and troubleshooting of VLANs or Layer 2 switching, and which captures interfaces in addition to ports, Junos Network Director, VLANs, and inter-VLAN routing.
- Security for Layer 2
This domain is first looking at the identification of concepts, operation, and value of different Layer 2 features for security and protection. Subtopics captured by this unit include BPDU, root, and loop protection; port security, which includes MAC limiting, inspection for Dynamic ARP, DHCP snooping or source guard for IP, MACsec, and storm control. The second issue for the section regards the firewall filters for layer 2. This digs into filter types, processing order, and match criteria as well as actions. The third and last subject to look at is about exhibiting knowledge on the configuration, monitoring, and resolving problems arising within security for Layer 2. This is where candidates have to show their know-how in protection, port security, storm control, and configuration in addition to the application for firewall filter.
- Spanning Tree
This module is concerning the concepts, operation, functionality, or benefits of the Spanning Tree Protocols. This observes STP & RSTP concepts, port roles & states, BPDUs, and convergence in addition to reconvergence. There is also the issue of configuring, monitoring, and troubleshooting both RSTP and STP.
This section emphasizes the basics of OSPF, which considers link-state database, OSPF types of packets, router ID, adjacencies as well as neighbors, OSPF and LSA packet types, area and router types, router ID, realms, and others. The other subtopic scrutinizes the configuration, monitoring, and troubleshooting OSPF, with a special focus on areas, interfaces, in addition to neighbors, application of routing policy, troubleshooting tools such as logging, trace options, ping, and more.
- Protocol Independent Routing
This objective for the JNCIS-ENT certificate captures the concepts, functionality, and operation of varied routing components that are independent of protocol. This is where to find the topics such as aggregate, generated, and static routes, load balancing, routing instances that include RIB groups, Martian addresses, and filter-based kind of forwarding. It also captures setting up, monitoring, and troubleshooting tasks.
This section concerns concepts and functions of IS-IS as well as checks if the candidate understands how it operates. Some issues covered are IS-IS PDUs, TLVs, levels as well as areas, link-state databases, and metrics. The other part included is dedicated to the configuration, troubleshooting, or monitoring of IS-IS. Some focus fields are levels, interfaces as well as adjacencies, added basic options, and applying the routing policy along with common tools for resolving arising problems.
The issue of Tunnels regarding the content of the JNCIS-ENT certification mostly covers concepts, requirements, and functions of IP-based tunneling. This addresses GRE/UDP, IP-IP, and tunneling applications in addition to considerations. Secondly, this domain talks about configuration, troubleshooting, or monitoring of IP tunnels.
This is where candidates will uncover the BGP concepts, basic operations, message types, attributes, the selection process for route or path, and IBGP as well as EBGP functionality along with interaction. They will also uncover issues regarding configuring, monitoring, and troubleshooting BGP, with special attention to groups & peers, added basic options, troubleshooting tools, and others.
- High Availability
For this domain, the first topic discusses the concepts, applications, requirements, and benefits of high availability. This includes the questions about LAG (Link Aggregation Groups), Virtual Chassis, Graceful Restart (GR), VRRP (Virtual Router Redundancy Protocol), and more. The second part of this section is focused on configuring, monitoring, and troubleshooting high availability. Issues assessed cover LAG & RTG, VRRP, troubleshooting tools, and others.
Opportunities for Career, Job Profiles, and Expected Pay
The Juniper JNCIS-ENT certificate picks you out from those who are not accredited, thus providing opportunities to grow your network-based career faster. It’s a way to gain a massive insight into network products as well as services for Juniper and prove your mastery to provide solutions that will take care of your customers’ interests. Targeted job roles available for accredited individuals include network engineer, network support engineer, network operation engineer, and network specialist, to name a few. PayScale.com expresses that the median pay for the holders of this accreditation is about $97k per year.
What’s Your Next Step after Obtaining the JNCIS-ENT Certification?
The JNCIS-ENT certificate is good for 3 years, and that’s when renewal is necessary. Besides recertification, it’s prudent to consider the direction of your career. The first option is to pass the JNCIS-ENT exam again and maintain the same level of expertise. Otherwise, you can go for the professional JNCIP-ENT certificate that is under the same track. JNCIS-ENT will be serving as a prerequisite in this case. Still, there is one more alternative to consider since the vendor states that acquiring the JNCIP-DC (Data Center, Professional) certification will update your JNCIS-ENT as well.
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- Layer 2 Switching or VLANs
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