Udemy-AWS Cloud Practitioner (CLF-C01)-Practice Exam

Udemy-AWS Cloud Practitioner (CLF-C01)-Practice ExWhat AWS service helps you estimate the cost of using AWS vs. an on-premises data center? a) AWS Billing and Cost Tool b) Consolidated Billing c) Cost Explorer d) TCO Calculator - correct answer d) TCO Calculator The TCO (total cost of ownership) calculator helps you estimate the cost of using AWS vs. an on-premises data center. AWS Billing and Cost Tools What services has built-in DDoS mitigation and/or protection? a) SNS b) EC2 c) None of these apply d) RDS - correct answer c) None of these apply AWS services with built-in DDoS mitigation/protection include: 1) Route 53 2) CloudFront 3) WAF (web application firewall) 4) Elastic Load Balancing 5) VPCs and Security Groups What does S3 stand for? a) Simple Storage Service b) Service for Simple Storage c) Simplified Storage Service d) Simple Store Service - correct answer a) Simple Storage Service What is AWS's preferred NoSQL database? a) RDS b) MySQL c) DynamoDB d) Oracle - correct answer c) DynamoDB Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It's a fully managed, multi-region, multi-master database with built-in security, backup and restore, and in-memory caching for internet-scale applications. DynamoDB can handle more than 10 trillion requests per day and can support peaks of more than 20 million requests per second. Many of the world's fastest-growing businesses such as Lyft, Airbnb, and Redfin as well as enterprises such as Samsung, Toyota, and Capital One depend on the scale and performance of DynamoDB to sup What service provides a complete audit trail of all AWS services within an account? a) VPC Flow Logs b) S2 access logs c) Elastic Load Balancer Logs d) CloudTrail Logs - correct answer d) CloudTrail Logs A trail enables CloudTrail to deliver log files to an Amazon S3 bucket. By default, when you create a trail in the console, the trail applies to all AWS Regions. The trail logs events from all Regions in the AWS partition and delivers the log files to the Amazon S3 bucket that you specify. What option below will increase the fault tolerance of your application in AWS? a) Deploy resources to multiple subnets b) Deploying resources across multiple edge locations c) Deploy resources across multiple availability zones d) Deploy resources to multiple AWS accounts - correct answer c) Deploy resources across multiple availability zones By deploying resources across multiple availability zones, you are designing with a failure in mind. So if one AZ goes down, the other AZ would still be up and running making your application more fault tolerant. What is the main benefit of decoupling an application? a) Creating a tightly coupled integrated application b) Enabling data synchronization across all layers c) The ability to execute bootstrapping actions across all servers d) Reducing interdependencies and reducing the blast radius, so failures do not affect other components of your application - correct answer d) Reducing interdependencies and reducing the blast radius, so failures do not affect other components of your application Decoupling ensures the different components of your application can be managed/maintained separately. Which of the following statements is most accurate regarding scalability? a) Scalable systems divert traffic to the instances with the least load. b) Scalable systems divert traffic to the instances with the most capacity. c) Scalable systems divert traffic based on priority. d) Scalable systems divert traffic to multiple regions. - correct answer a) Scalable systems divert traffic to the instances with the least load. When one of the instances has a smaller load, it will divert traffic to the least-loaded instance to give the other instances a chance to lessen their load. Which of the following statements regarding Auto Scaling is most accurate? a) Distributes traffic to multiple EC2 or RDS instances b) Distributes traffic across multiple regions c) Increases the size of the EC2 instance based on demand d) Scales out resources based on demand - correct answer d) Scales out resources based on demand Auto Scaling automatically adjusts the capacity to maintain performance across multiple resources. Which statement below best describes fault tolerance? a) Deploying resources across multiple Availability Zones b) Deploying resources across multiple edge locations c) Deploying resources across multiple AWS accounts d) Deploying resources across multiple VPCs - correct answer a) Deploying resources across multiple Availability Zones Deploying resources across multiple Availability Zones increases your fault tolerance because each Availability Zone is a set of one or more data centers, so if one Availability Zone goes down, there would be other Availability Zones still up and running — so your application would also be up and running. Which disaster recovery optio am