Juniper JN0-643 : JNCIP-ENT (Juniper Networks Certified Internet Professional) Exam
Topics on the Juniper JN0-643: JNCIP-ENT (Juniper Networks Certified Internet Professional) exam come from the Advanced Junos Enterprise Routing (AJER) and Advanced Junos Enterprise Switching (AJEX) training courses, so taking the courses will best prepare one for the JN0-643 exam. Each exam contains 70 questions, which are all multiple choice. After completing the 120 minute exam, the candidate will be know immediately whether or not they have passed.
Designed with those who have expert level experience with Juniper Networks Junos OS, all exam candidates must have obtained either the JNCIS-ENT or JNCIS-ER certification before taking the JN0-643 exam. The JNCIP-ENT certification lasts for only two years, before the candidate must take the JN0-643 exam again in order to become regain certification.
Potential exam takers must have an expert understanding of OSPF. The exam will give them a scenario and the candidate will need to be able to explain the concepts, operation and functionality of OSPF as it relates to the scenario. Additionally, candidates will need to describe the OSPF LSA types, how flooding of LSAs work in an OSPF network, and the purpose of virtual links. Candidates may also be required to configure and monitor single-area and multi-area OSPF based on a scenario.
Additional concepts on the Juniper JN0-643 exam include BGP, IP multicast, L2 authentication and access control, IP telephony features, Class of Service (CoS), monitoring, and troubleshooting. Candidates should also be well-acquainted with Ethernet switching and spanning tree.