CompTIA
CV0-003 · Question #312
CV0-003 Question #312: Real Exam Question with Answer & Explanation
The correct answer is B. Rolling upgrades. Rolling upgrades update hardware nodes sequentially, keeping remaining nodes operational throughout the firmware upgrade process to minimize overall service downtime.
Operations
Question
A company is looking for a hardware feature with the least amount of downtime in terms of firmware upgrades. Which of the following features BEST meet this requirement?
Options
- AIn-service upgrades
- BRolling upgrades
- CFailover upgrades
- DUser-mode upgrades
Explanation
Rolling upgrades update hardware nodes sequentially, keeping remaining nodes operational throughout the firmware upgrade process to minimize overall service downtime.
Common mistakes.
- A. In-service upgrades refer to upgrading a single device while it remains active, which differs from the sequential, cluster-wide approach that rolling upgrades provide across multiple nodes.
- C. Failover upgrades depend on a standby unit taking over while the primary is upgraded, which introduces a failover event and additional recovery steps rather than a seamless sequential process.
- D. User-mode upgrades are not a recognized hardware firmware upgrade category and do not describe any standard mechanism for reducing downtime during firmware deployments.
Concept tested. Rolling upgrades for minimizing hardware firmware downtime
Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ha/configuration/xe-16/ha-xe-16-book/ha-issu.html
Topics
#firmware upgrades#rolling upgrades#high availability#downtime minimization
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