Network_Appliance
NS0-157 · Question #151
NS0-157 Question #151: Real Exam Question with Answer & Explanation
The correct answer is A: A new VLDB ring master is elected.. This question tests understanding of how VLDB ring quorum loss on the master node affects cluster control-plane operations versus data-plane I/O in ONTAP.
ONTAP Cluster Fundamentals
Question
The VLDB is out-of-quorum on the node serving as the master of the VLDB ring. Which four statements are true? (Choose four.)
Options
- AA new VLDB ring master is elected.
- BClients can write to volumes on that node.
- CVolumes cannot be moved to or from that node.
- DClients can read from volumes hosted on that node.
- ENew volumes can be created on aggregates hosted on that node.
Explanation
This question tests understanding of how VLDB ring quorum loss on the master node affects cluster control-plane operations versus data-plane I/O in ONTAP.
Common mistakes.
- E. Creating a new volume requires inserting a new entry into the VLDB to register its location; since the VLDB is out of quorum on that node, this metadata write cannot be committed, so new volume creation on that node's aggregates is blocked.
Concept tested. ONTAP VLDB ring quorum loss impact on cluster operations
Reference. https://docs.netapp.com/us-en/ontap/concepts/volumes-qtrees-files-luns-concept.html
Topics
#VLDB#quorum#ring master election#volume operations
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