Enterprise Routing and Switching, Professional (JNCIP-ENT)

The log messages indicate two primary issues. First, the 192.168.1.5 and 192.168.1.6 peers are missing the MD5 digest, indicating that there is a misconfigured MD5 key for those peers. Second, the 192.168.1.4 peer shows an 'Open Message Error' with a reason of a 'bad peer AS number,' indicating that 192.168.1.4 has a misconfigured autonomous system number.

In this scenario, anycast RP is implemented to ensure multicast service availability. However, R2 is not receiving active source information. One method to address this is to configure MSDP (Multicast Source Discovery Protocol) between R2 and R3. MSDP enables the RPs to share information about active sources, ensuring that all RPs have a consistent view of the multicast source. Another method is to configure an RP set in PIM on R2 and R3, which allows the RPs to communicate and forward PIM register messages to each other in the set. This ensures that all RPs in the set are aware of the active sources. Together, these methods facilitate the distribution of source information among the RPs, ensuring efficient multicast routing.

To ensure that only corporate devices identified by MAC addresses are allowed to connect and authenticate via a centralized server, the appropriate method is MAC RADIUS. This method uses MAC addresses for device identification and delegates authentication to a RADIUS server, ensuring both scalability and control over which devices can access the network.

The correct answer is Type 7. In OSPF, when an ASBR in a Not-So-Stubby Area (NSSA) advertises external routes, it uses Type 7 LSAs. These Type 7 LSAs are converted to Type 5 LSAs by the Area Border Router (ABR) when they are sent to other areas. Since the network diagram shows that the 192.168.1.0/24 network is in a NSSA (the region including R1 and R2), the appropriate LSA type for advertisement within the NSSA is Type 7.

The forbidden mode does not register or declare VLANs. In forbidden registration mode, an interface does not participate in MVRP even if MVRP is enabled on the switch, which ensures that such interfaces do not automatically register or propagate VLANs through MVRP.