YT 1-20 Flashcards
Which cloud architecture design concept is supported by distributing workloads across various Availability Zones?
A. Implement automation.
B. Design for agility.
C. Design for failure.
D. Implement elasticity.
Correct Answer: C. Design for failure
✅ Explanation:
Distributing workloads across multiple Availability Zones (AZs) ensures fault tolerance, meaning if one AZ fails, the workload can continue running in another. This is a fundamental part of designing for failure.
❌ Why the others are wrong:
A. Implement automation: While automation helps manage cloud resources efficiently, it does not directly relate to distributing workloads across AZs.
B. Design for agility: Agility is about rapid development and deployment, not redundancy across AZs.
D. Implement elasticity: Elasticity allows automatic scaling of resources based on demand but does not specifically address fault tolerance.
Which compute hosting model should be accounted for in the Total Cost of Ownership (TCO) when undertaking a cost analysis that allows physical isolation of a customer workload?
A. Dedicated Hosts
B. Reserved Instances
C. On-Demand Instances
D. No Upfront Reserved Instances
Correct Answer: A. Dedicated Hosts
✅ Explanation:
Dedicated Hosts provide physical isolation because they allocate an entire physical server to a single customer, making them essential for compliance and security-sensitive workloads.
❌ Why the others are wrong:
B. Reserved Instances: These provide cost savings but do not offer physical isolation.
C. On-Demand Instances: These are virtualized and shared across customers.
D. No Upfront Reserved Instances: This is just a pricing model for Reserved Instances and does not ensure physical isolation.
Who is accountable for security and compliance under the AWS shared responsibility model?
A. The customer is responsible.
B. AWS is responsible.
C. AWS and the customer share responsibility.
D. AWS shares responsibility with the relevant governing body.
Correct Answer: C. AWS and the customer share responsibility
✅ Explanation:
AWS follows a shared responsibility model where AWS secures the cloud infrastructure, while customers are responsible for securing their data, applications, and configurations.
❌ Why the others are wrong:
A. The customer is responsible: Customers do have security responsibilities but not for AWS infrastructure.
B. AWS is responsible: AWS secures its infrastructure, but customers must manage access controls, encryption, and application security.
D. AWS shares responsibility with the governing body: Compliance bodies set standards, but AWS and customers are responsible for security implementation.
Which pillar of the AWS Well-Architected Framework is supported by the design philosophy of performing operations as code?
A. Performance efficiency
B. Operational excellence
C. Reliability
D. Security
Correct Answer: B. Operational excellence
✅ Explanation:
Performing operations as code allows for automated, repeatable, and efficient processes, aligning with the Operational Excellence pillar.
❌ Why the others are wrong:
A. Performance efficiency: Focuses on optimal resource use, not automation.
C. Reliability: Concerns system recovery and fault tolerance, not operational automation.
D. Security: Security is crucial but not directly tied to operations as code.
Which AWS service can identify the person who made the API request when an Amazon EC2 instance is terminated?
A. Amazon CloudWatch
B. AWS CloudTrail
C. AWS X-Ray
D. AWS Identity and Access Management (IAM)
Correct Answer: B. AWS CloudTrail
✅ Explanation:
AWS CloudTrail logs all API activity, tracking who performed what action in the AWS environment.
❌ Why the others are wrong:
A. Amazon CloudWatch: Monitors performance metrics but does not log API calls.
C. AWS X-Ray: Helps trace application requests but does not track API calls.
D. AWS IAM: Manages access policies but does not provide activity logs.
What is raised when a business deploys web servers across several AWS Regions?
A. Coupling
B. Availability
C. Security
D. Durability
Correct Answer: B. Availability
✅ Explanation:
Deploying across multiple Regions improves availability by ensuring redundancy and reducing downtime risks.
❌ Why the others are wrong:
A. Coupling: This refers to system dependency, not availability.
C. Security: While security is critical, it is not the primary concern in multi-region deployment.
D. Durability: Durability refers to data persistence rather than system availability.
What is the unique advantage that Enterprise Support customers receive?
A. Access to a Technical Project Manager
B. Access to a Technical Account Manager
C. Access to a Cloud Support Engineer
D. Access to a Solutions Architect
Correct Answer: B. Access to a Technical Account Manager
✅ Explanation:
Enterprise Support customers get Technical Account Managers (TAMs) who provide proactive guidance and account management.
❌ Why the others are wrong:
A. Technical Project Manager: AWS does not offer this role under Enterprise Support.
C. Cloud Support Engineer: Available in lower-tier plans but not unique to Enterprise Support.
D. Solutions Architect: Provided for architectural guidance but not unique to Enterprise Support.
Which of the following price options would result in the highest reduction after making an Amazon EC2 Dedicated Host reservation?
A. No upfront payment
B. Hourly on-demand payment
C. Partial upfront payment
D. All upfront payment
Correct Answer: D. All upfront payment
✅ Explanation:
Paying all upfront provides the largest discount for EC2 Dedicated Host reservations.
❌ Why the others are wrong:
A. No upfront payment: Costs more in the long run.
B. Hourly on-demand payment: Does not include reservation discounts.
C. Partial upfront payment: Offers some savings but not the highest discount.
Amazon Elastic Container Service (Amazon ECS) and Amazon DynamoDB are used by a firm to execute its mission-critical web application. Multiple times during the day, the workload jumps to up to ten times the regular level. Which AWS Cloud feature helps the business to adapt to these demand changes?”
A. Agility
B. Global reach
C. Scalability
D. Security
Correct Answer: C. Scalability
✅ Explanation:
Scalability allows AWS resources to automatically adjust to demand, ensuring performance consistency.
❌ Why the others are wrong:
A. Agility: Helps with development speed but not workload management.
B. Global reach: Enables global deployment but does not adjust to demand changes.
D. Security: Critical but not related to handling workload surges.
Which AWS service supports MySQL and PostgreSQL as relational databases?
A. Amazon Redshift
B. Amazon DynamoDB
C. Amazon Aurora
D. Amazon Neptune
Correct Answer: C. Amazon Aurora
✅ Explanation:
Amazon Aurora is a managed relational database service that supports MySQL and PostgreSQL.
❌ Why the others are wrong:
A. Amazon Redshift: Designed for data warehousing, not relational databases.
B. Amazon DynamoDB: A NoSQL database, not relational.
D. Amazon Neptune: Used for graph databases, not relational data.
Which functionality may be utilized to prevent inadvertent overwrites or deletions of Amazon S3 buckets?
A. Lifecycle policy
B. Object versioning
C. Server-side encryption
D. Bucket ACL
Correct Answer: B. Object versioning
✅ Explanation:
Object versioning allows multiple versions of an object to exist, preventing accidental deletion or overwriting.
❌ Why the others are wrong:
A. Lifecycle policy: Manages object storage lifecycle but does not prevent deletion.
C. Server-side encryption: Encrypts data but does not prevent overwrites or deletions.
D. Bucket ACL: Controls access but does not protect against accidental deletions.
To achieve high availability, how many Availability Zones should computing resources be provided across?
A. A minimum of one
B. A minimum of two
C. A minimum of three
D. A minimum of four or more
Correct Answer: B. A minimum of two
✅ Explanation:
Using at least two Availability Zones ensures redundancy and high availability in case of failure.
❌ Why the others are wrong:
A. One AZ: Provides no redundancy.
C. Three or more: Enhances availability but is not the minimum required.
D. Four or more: Overly redundant for standard high availability.
In the case of an environmental disruption, a company needs to make sure its infrastructure is structured for fault tolerance and business continuity. Which parts of the AWS architecture should the organization replicate?
A. Edge locations
B. Availability Zones
C. Regions
D. Amazon Route 53
Correct Answer: B. Availability Zones
✅ Explanation:
Replicating across multiple Availability Zones ensures that if one fails, another can take over.
❌ Why the others are wrong:
A. Edge locations: Used for caching, not infrastructure resilience.
C. Regions: Replication across Regions increases resilience but is not always required.
D. Amazon Route 53: Manages DNS, not fault tolerance.
An Amazon RDS database instance is deployed across several Availability Zones. Which pillar of the AWS Well-Architected Framework is included in this strategy?
A. Performance efficiency
B. Reliability
C. Cost optimization
D. Security
Correct Answer: B. Reliability
✅ Explanation:
Deploying RDS across multiple AZs improves reliability by ensuring continued operation during failures.
❌ Why the others are wrong:
A. Performance efficiency: Focuses on optimizing resource use.
C. Cost optimization: Redundancy may increase cost, not reduce it.
D. Security: Does not directly relate to availability.
What are the AWS Cloud’s advantages? (Select two.)
A. Fixed rate monthly cost
B. No need to guess capacity requirements
C. Increased speed to market
D. Increased upfront capital expenditure
E. Physical access to cloud data centres
Correct Answer: B. No need to guess capacity requirements, C. Increased speed to market
✅ Explanation:
No need to guess capacity – AWS scales automatically.
Increased speed to market – Faster deployments compared to on-premises.
❌ Why the others are wrong:
A. Fixed monthly cost: AWS has variable pricing based on usage.
D. Increased upfront capital expenditure: AWS reduces capital expenses.
E. Physical access to data centers: AWS customers do not have direct access.
When utilizing the AWS Command Line Interface (AWS CLI), which of the following Identity and Access Management (IAM) entities is connected with an access key ID and secret access key?
A. IAM group
B. IAM user
C. IAM role
D. IAM policy
Correct Answer: B. IAM user
✅ Explanation:
IAM users use access key IDs and secret keys for authentication.
❌ Why the others are wrong:
A. IAM group: Groups do not have credentials.
C. IAM role: Roles assume temporary credentials.
D. IAM policy: Policies define permissions, not authentication.
Which AWS product or service enables businesses to monitor and classify their expenditure at a precise level?
A. Cost allocation tags
B. Consolidated billing
C. AWS Budgets
D. AWS Marketplace
Correct Answer: A. Cost allocation tags
✅ Explanation:
Cost allocation tags allow detailed tracking of AWS expenses.
❌ Why the others are wrong:
B. Consolidated billing: Groups multiple accounts but does not classify spending.
C. AWS Budgets: Tracks and alerts on costs but does not classify spending.
D. AWS Marketplace: Used for third-party software, not cost tracking.
A company plans to use an Amazon Snowball Edge device to transfer files to the AWS Cloud. Which activities related to a Snowball Edge device are available to the company at no cost?
A. Use of the Snowball Edge appliance for a 10-day period
B. The transfer of data out of Amazon S3 and to the Snowball Edge appliance
C. The transfer of data from the Snowball Edge appliance into Amazon S3
D. Daily use of the Snowball Edge appliance after 10 days
Correct Answer: C. The transfer of data from the Snowball Edge appliance into Amazon S3
✅ Explanation:
Uploading data into S3 from Snowball is free, but other actions may incur charges.
❌ Why the others are wrong:
A. 10-day free use: The device is charged after 10 days.
B. Transferring data out: AWS charges for data egress.
D. Daily use after 10 days: Incur additional charges.
Which concepts of AWS Cloud architecture may assist boost reliability? (Select two.)
A. Using monolithic architecture
B. Measuring overall efficiency
C. Testing recovery procedures
D. Adopting a consumption model
E. Automatically recovering from failure
Correct Answer: C. Testing recovery procedures, E. Automatically recovering from failure
✅ Explanation:
Testing recovery ensures preparedness for failures.
Auto-recovery allows AWS services to maintain uptime.
❌ Why the others are wrong:
A. Monolithic architecture: Increases failure risks.
B. Measuring efficiency: Important but does not enhance reliability.
D. Consumption model: Relates to cost optimization, not reliability.
Which AWS service enables customers to view AWS compliance control reports on-demand and self-service?
A. AWS Config
B. Amazon GuardDuty
C. AWS Trusted Advisor
D. AWS Artifact
Correct Answer: D. AWS Artifact
✅ Explanation:
AWS Artifact provides access to compliance reports.
❌ Why the others are wrong:
A. AWS Config: Tracks resource configurations, not compliance reports.
B. Amazon GuardDuty: Detects threats but does not provide compliance reports.
C. AWS Trusted Advisor: Provides best practice recommendations, not compliance documentation.
