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HP0-Y36 · Question #55
HP0-Y36 Question #55: Real Exam Question with Answer & Explanation
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Question
Given the following MSTP region configurations for Switch 1, Switch 2, Switch 3, and Switch 4:
Switch 1
stp region-configuration
region-name Acme
revision-level 2
instance 1 vlan 1 to 100
instance 2 vlan 101 to 200
active region-configuration
Switch 2
stp region-configuration
region-name Acme
revision-level 2
instance 1 vlan 1 to 100
instance 2 vlan 101 to 200
active region-configuration
Switch 3
stp region-configuration
region-name Acme
revision-level 2
instance 1 vlan 1 to 100
instance 2 vlan 101 to 200
active region-configuration
Switch 4
stp region-configuration
region-name Acme
revision-level 3
instance 1 vlan 1 to 100
instance 2 vlan 101 to 200
instance 3 vlan 201 to 300
active region-configuration
What happens when Switch 4 completes its boot cycle and joins the MSTP domain?
Options
- AMSTP updates the region configuration of switches with older revisions and the additional VLANs are not created.
- BMSTP updates the region configuration of the switches with lower revision numbers and creates additional VLANs.
- CMSTP detects an inconsistency between region configurations by analyzing the digest in the BPDU, then uses Common Spanning tree between Switch 1 and Switch 3, and Switch 2 and Switch 4.
- DMSTP detects an inconsistency between region configurations by analyzing the digest in the BPDU, then uses Common Spanning tree between Switch 1 and Switch 4, and Switch 2 and Switch 3.
- EMSTP detects an inconsistency between region configurations by analyzing the digest in the BPDU, then uses Common Spanning tree between Switch 1 and Switch 2, and Switch 3 and Switch 4.
- FMSTP does not modify the region configuration, and only traffic for instances 1 and 2 are carried over trunk links.
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