Which component of the AWS global infrastructure is made up of one or more discrete data centers that have redundant power, networking, and connectivity?
Which component of the AWS global infrastructure is made up of one or more discrete data centers that have redundant power, networking, and connectivity?
An Availability Zone is a component of the AWS global infrastructure that consists of one or more discrete data centers with redundant power, networking, and connectivity. These zones are engineered to be isolated from failures in other Availability Zones, providing fault tolerance and high availability for applications and services hosted within AWS. By deploying resources across multiple Availability Zones, organizations can achieve resilience and operational continuity in case of localized failures or outages.
Which duties are the responsibility of a company that is using AWS Lambda? (Choose two.)
When using AWS Lambda, the company is responsible for the security inside of the code and the writing and updating of that code. AWS Lambda abstracts and manages the underlying infrastructure, including server maintenance, capacity provisioning, and scaling, allowing the company to focus on developing and securing their application. The company does not need to manage CPU resources, patch the operating system, or ensure the security of the underlying infrastructure, as these are handled by AWS Lambda.
Which AWS services or features provide disaster recovery solutions for Amazon EC2 instances? (Choose two.)
Amazon EC2 disaster recovery can be supported by using Amazon Machine Images (AMIs) and Amazon Elastic Block Store (EBS) snapshots. AMIs allow for the creation of pre-configured virtual machine images that can be used to launch restored versions of instances, thus ensuring quick recovery in case of failure. EBS snapshots provide point-in-time copies of EBS volumes, which can be used to restore volumes or create new instances in different Availability Zones or regions, further contributing to disaster recovery efforts.
A company is migrating to the AWS Cloud instead of running its infrastructure on premises.
Which of the following are advantages of this migration? (Choose two.)
Migrating to the AWS Cloud provides increased global reach and agility, and the ability to deploy globally in minutes. These features illustrate key benefits of cloud computing, including faster and more flexible deployment of services worldwide. It does not inherently eliminate the need for security auditing or IT staff, nor does it guarantee redundancy by default for all compute services.
A user is comparing purchase options for an application that runs on Amazon EC2 and Amazon RDS. The application cannot sustain any interruption. The application experiences a predictable amount of usage, including some seasonal spikes that last only a few weeks at a time. It is not possible to modify the application.
Which purchase option meets these requirements MOST cost-effectively?
Given that the application cannot sustain any interruption and experiences predictable usage with some seasonal spikes, the most cost-effective option is to buy Reserved Instances for the predicted amount of usage throughout the year and allow any seasonal usage to run at an On-Demand rate. Reserved Instances provide cost savings for consistent usage, while On-Demand Instances ensure availability during peak times without the risk of interruptions, which is crucial for an application that cannot tolerate downtime.