Refer to the exhibit.
Exhibit 1.

Exhibit 2.

Exhibit 3.

How many MSTP regions exist in the topology shown in the exhibit?
Refer to the exhibit.
Exhibit 1.
Exhibit 2.
Exhibit 3.
How many MSTP regions exist in the topology shown in the exhibit?
Based on the information provided, four MSTP regions exist in the topology shown in the exhibit. MSTP regions are determined by the exact match of the MST configuration name, revision number, and instance VLAN mappings. Each switch must have the same MST configuration identifier information to be part of the same region. In this case, Core-1, Core-2, Access-1, and Access-2 all display differences in these settings, indicating that none of them belong to the same MSTP region.
D is correct, name, revision and mapped VLANS are different.
I think the answer is C
D is right. The Name, Revision and mapped VLANs has to be the same in one region.
D is correct. Each switch has different config settings.
C is correct. Each region ONLY need to have same name and it's case sensitive
D is the correct answer.