Refer to the exhibit. A network administrator has configured OSPFv2 on the two Cisco routers but PC1 is unable to connect to PC2. What is the most likely problem? - ITexam24
How Does the Passive Interface Feature Work in EIGRP? - Cisco
Passive Interfaces | IP Routing Topics
How to configure OSPF Passive Interfaces » NetworkUstad
Chapter 5 RIP version 1 CIS 82 Routing Protocols and Concepts - ppt download