Udemy-AWS Cloud Practitioner Exam Practice questions with complete solutions(CLF-C01)

What 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 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 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 a) Simple Storage Service What is AWS's preferred NoSQL database? a) RDS b) MySQL c) DynamoDB d) Oracle 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 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 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 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.