Cloud Computing and AWS Key Terms Chapter 1

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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)?

To define the minimum amount of service a provider promises to its customers (A) Signup and view all the answers

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

EC2 (A) Signup and view all the answers

What is the effect of instance termination?

It deletes an instance (B) Signup and view all the answers

What is the main benefit of using Spot Instances?

Reduced cost for partial instance availability (C) Signup and view all the answers

What is the purpose of Resource Tags in AWS?

To organize AWS resources and track billing and performance (A) Signup and view all the answers

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

It can only store files up to 500MB (A) 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?

IOPS SSD (A) Signup and view all the answers

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

Stopping an instance powers off the instance, while terminating an instance deletes the instance (B) Signup and view all the answers

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

Cold HDD (A) Signup and view all the answers

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

To limit access for the root user (D) Signup and view all the answers

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

Every 30 days (A) Signup and view all the answers

What is the primary function of an IAM Role?

To provide temporary sets of permissions for specific use cases (A) Signup and view all the answers

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

To monitor usage of the root account (B) Signup and view all the answers

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

To provide temporary access from a large variety of locations (A) Signup and view all the answers

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

To provide an additional layer of security (C) Signup and view all the answers

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

To monitor all resources and the changes to them at a six hour interval (B) Signup and view all the answers

What is the metric on which AWS Config is billed?

The number of Configuration Items (D) Signup and view all the answers

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

The AWS Systems Manager (with an agent) (D) Signup and view all the answers

Where are configuration history and snapshots stored in AWS Config?

In an S3 bucket (B) Signup and view all the answers

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

To offer human-readable names instead of IP addresses (D) Signup and view all the answers

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

To capture all configuration items from a specific moment in time (A) Signup and view all the answers

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

Domain (A) Signup and view all the answers

What is the purpose of a Nameserver?

To perform resolution for a domain (B) Signup and view all the answers

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

A custom rule (B) Signup and view all the answers

What is the function of a Zone File?

To provide a set of instructions for connecting to specific resources (C) Signup and view all the answers

What is the purpose of a CNAME Record?

To create an alias, or DNS to DNS record (A) Signup and view all the answers

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

Hostname (C) Signup and view all the answers