An Administrator Needs to Deploy a New Release of an Application

question 80

Multiple Choice

An administrator needs to deploy a new release of an application in a way that allows a quick rollback to the previous version of the application. Which of the following is the BEST strategy to apply?

• A) Deploy the application to a set of servers in small batches. If a rollback is necessary, restore the previous deployment from snapshots or backups.
• B) Deploy the application to a subset of servers that expose the new application. Direct all traffic to these servers. If a rollback is necessary, redirect all traffic to the previous subset of servers.
• C) Deploy the application to the servers in a backup datacenter or secondary cloud deployment. Shut down the servers in the primary datacenter, forcing all traffic to the failover location. If a rollback is necessary, restart the primary environment and shut down the secondary environment.
• D) Deploy the application to all servers in the datacenter or cloud environment. If a rollback is necessary, undeploy the application and deploy the previous version.

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Definitions:

Ego-resilient

A personality trait characterized by adaptability, flexibility, and the ability to maintain a positive outlook despite stress and adversity.

Overcontrolled

Characterized by an individual's excessive regulation or suppression of emotions, impulses, or behaviors typically considered too restrained.

Fictive Kin

Friends who are considered and behave like family members.

Chosen Family Networks

Social and support networks formed by individuals, often among those not biologically related, based on mutual care, respect, and commitment.