Free CV0-003 Questions Attempt

The correct answer is D. Migrate the data to flash storage. Flash storage is a type of solid-state storage that uses flash memory to store data. Flash storage has much faster performance and lower latency than NL-SAS storage, which is a type of hard disk drive that uses nearline serial attached SCSI interface. According to the web search results, NL-SAS devices have much higher response times than flash devices123. Therefore, migrating the data to flash storage can reduce the application latency and improve the user experience. Increasing the capacity of the data storage, migrating the data to SAS storage, or increasing the CPU of the VM are not likely to solve the latency issue, as they do not address the root cause of the problem, which is the slow performance of NL-SAS storage. For more information on flash storage and its benefits, you can refer to the Dell EMC Unity: FAST Technology Overview2 or the Dell Technologies website4.

The performance issue is caused by the high demand of complex SQL queries on the database server, which consumes a lot of RAM and disk throughput. Increasing caching on the database server would reduce the number of disk reads and writes, as well as improve the response time of the queries by storing frequently accessed data in memory. This would be the best solution to resolve the performance issue. Reference: CompTIA Cloud+ Certification Exam Objectives, Domain 4.0 Troubleshooting, Objective 4.3 Given a scenario, troubleshoot capacity issues within a cloud environment.

A canary deployment is a software deployment technique where a new feature or version is released to a small subset of users in production prior to releasing it to a larger subset or all the users. It is also sometimes termed a phased rollout or incremental release1. A canary deployment allows the developers to test the new service in a real environment and get feedback from the users before making it available to everyone. It also reduces the risk of failures and enables easy rollbacks if something goes wrong. A canary deployment is different from a blue-green deployment, where two identical environments are used to switch between the old and new versions of the service. A big bang deployment is where the new service is released to all the users at once, without any testing or gradual rollout. A rolling deployment is where the new service is installed in batches or stages, replacing the old service gradually until all the users are on the new version.

The most useful tool in maintaining confidentiality for a new application stack that will store sensitive information and be accessible from the internet is data loss prevention (DLP). DLP is a type of security solution that monitors and controls the flow of data in and out of a system or network. It can detect and prevent unauthorized access, transmission, or leakage of sensitive data, such as personal information, financial records, or intellectual property. DLP can also enforce encryption, masking, or deletion of sensitive data to protect its confidentiality. Reference: CompTIA Cloud+ Certification Exam Objectives, Domain 2.0 Security, Objective 2.5 Given a scenario, apply data security techniques in the cloud.