Cloud Computing and AWS Key Terms Chapter 1
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Questions and Answers

What is the main purpose of virtualization in cloud computing?

  • To ensure high uptime for EC2 instances
  • To increase the scalability of an infrastructure
  • To divide the hardware resources of a single physical server into smaller units (correct)
  • To reduce capital expenditures

    • What is the difference between scalability and elasticity?

  • Scalability refers to the ability to efficiently meet unexpected changes in demand, while elasticity refers to the ability to efficiently meet expected changes in demand
  • Scalability is for increasing demand, while elasticity is for decreasing demand (correct)
  • Scalability refers to the ability to efficiently meet expected changes in demand, while elasticity refers to the ability to efficiently meet unexpected changes in demand
  • Scalability is for decreasing demand, while elasticity is for increasing demand

    • What is the key difference between capital expenditure and operational expenditure?

  • Capital expenditure is used for cloud services, while operational expenditure is used for physical servers
  • Capital expenditure is used for physical servers, while operational expenditure is used for cloud services
  • Capital expenditure involves large one-time purchases, while operational expenditure involves ongoing costs (correct)
  • Capital expenditure involves ongoing costs, while operational expenditure involves large one-time purchases

    • What is the purpose of a Service Level Agreement (SLA)?

    <p>To define the minimum amount of service a provider promises to its customers</p> Signup and view all the answers

    Which of the following AWS services is an example of a Compute service?

    <p>EC2</p> Signup and view all the answers

    What is the effect of instance termination?

    <p>It deletes an instance</p> Signup and view all the answers

    What is the main benefit of using Spot Instances?

    <p>Reduced cost for partial instance availability</p> Signup and view all the answers

    What is the purpose of Resource Tags in AWS?

    <p>To organize AWS resources and track billing and performance</p> Signup and view all the answers

    What is the limitation of Lambda functions in terms of file storage?

    <p>It can only store files up to 500MB</p> Signup and view all the answers

    What type of EBS drive is best suited for applications with lots of reads and writes, such as databases?

    <p>IOPS SSD</p> Signup and view all the answers

    What is the main difference between stopping an instance and terminating an instance?

    <p>Stopping an instance powers off the instance, while terminating an instance deletes the instance</p> Signup and view all the answers

    What is the cheapest EBS drive solution for storing data that is not frequently used?

    <p>Cold HDD</p> Signup and view all the answers

    What is the primary purpose of creating a regular user and assigning the AdministratorAccess policy?

    <p>To limit access for the root user</p> Signup and view all the answers

    What is the recommended frequency for rotating access keys for security purposes?

    <p>Every 30 days</p> Signup and view all the answers

    What is the primary function of an IAM Role?

    <p>To provide temporary sets of permissions for specific use cases</p> Signup and view all the answers

    What is the primary purpose of AWS CloudTrail or CloudWatch alarms?

    <p>To monitor usage of the root account</p> Signup and view all the answers

    What is the primary function of an Identity Pool in Amazon Cognito?

    <p>To provide temporary access from a large variety of locations</p> Signup and view all the answers

    What is the primary purpose of enabling MFA for the root user?

    <p>To provide an additional layer of security</p> Signup and view all the answers

    What is the primary function of the Configuration Recorder in AWS Config?

    <p>To monitor all resources and the changes to them at a six hour interval</p> Signup and view all the answers

    What is the metric on which AWS Config is billed?

    <p>The number of Configuration Items</p> Signup and view all the answers

    What is required to track information on an EC2 instance in AWS Config?

    <p>The AWS Systems Manager (with an agent)</p> Signup and view all the answers

    Where are configuration history and snapshots stored in AWS Config?

    <p>In an S3 bucket</p> Signup and view all the answers

    What is the primary function of a Domain Name System (DNS)?

    <p>To offer human-readable names instead of IP addresses</p> Signup and view all the answers

    What is the purpose of a Configuration Snapshot in AWS Config?

    <p>To capture all configuration items from a specific moment in time</p> Signup and view all the answers

    What is the term for the combination of a domain name and a top-level suffix?

    <p>Domain</p> Signup and view all the answers

    What is the purpose of a Nameserver?

    <p>To perform resolution for a domain</p> Signup and view all the answers

    What can be created to track specific items in AWS Config?

    <p>A custom rule</p> Signup and view all the answers

    What is the function of a Zone File?

    <p>To provide a set of instructions for connecting to specific resources</p> Signup and view all the answers

    What is the purpose of a CNAME Record?

    <p>To create an alias, or DNS to DNS record</p> Signup and view all the answers

    What is the term for a DNS-resolvable name for a specific host?

    <p>Hostname</p> Signup and view all the answers

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