Exam JN0-649 topic 1 question 5 discussion

C. Timers dictate when link state changes are propagated.

In the scenario of enabling the Multiple VLAN Registration Protocol (MVRP) to automate VLAN creation and management, the correct statement is: B. When enabled, MVRP affects all interfaces. Explanation: MVRP, when enabled, operates on all interfaces of the network device. It dynamically manages VLANs by exchanging control messages between neighboring switches to automate the creation and management of VLANs. Option A is true but it's not the only correct statement. The forbidden mode in MVRP prevents a port from participating in the VLAN registration process. Option C is incorrect. Timers in MVRP are used for various purposes related to the protocol operation, but they are not directly related to link state changes propagation. Option D is incorrect. MVRP (Multiple VLAN Registration Protocol) is independent of spanning tree protocols like RSTP (Rapid Spanning Tree Protocol) and VSTP (VLAN Spanning Tree Protocol). It focuses on VLAN management and does not directly interact with spanning tree protocols.

A is right

An interface in forbidden registration mode does not participate in MVRP even if MVRP is enabled on the switch.

A all the way

A for sure

A. The forbidden mode does not register or declare VLANs. You can change the registration mode of a specific interface to forbidden. An interface in forbidden registration mode does not participate in MVRP even if MVRP is enabled on the switch. B. When enabled, MVRP affects all interfaces. NOTE: Only trunk interfaces can be enabled for MVRP. C. Timers dictate when link state changes are propagated. The timers in MVRP define the amount of time an interface waits to join or leave MVRP or to send or process the MVRP information for the router or switch after receiving an MVRP PDU D. MVRP works with RSTP and VSTP MVRP works with Rapid Spanning Tree Protocol (RSTP) and Multiple Spanning Tree Protocol (MSTP), but not with VLAN Spanning Tree Protocol (VSTP). https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/mvrp.html

Should be A. https://www.juniper.net/documentation/us/en/software/junos/mvrp/multicast-l2/topics/concept/mvrp-mx-series-understanding.html

Wrong answer. Correct answer is A MVRP is disabled by default on the switches and, when enabled, affects only trunk interfaces. Once you enable MVRP, all VLAN interfaces on the switch belong to MVRP (the default normal registration mode) and those interfaces accept PDU messages and send their own PDU messages. forbidden—The interface does not register or declare VLANS (except statically configured VLANs).