CLF-C02: AWS Certified Cloud Practitioner
Which cloud architectural concept is supported by a system that can scale in terms of users, traffic, or data quantity without sacrificing performance?
Think parallel
Implement elasticity
Decouple your components
Design for failure
Answer is Implement elasticity
Elasticity is used just to meet the sudden up and down in the workload for a small period of time, Amazon Web Services defines Elasticity as "The ability to acquire resources as you need them and release resources when you no longer need them."
Reference:
https://aws.amazon.com/blogs/aws/new-whitepaper-architecting-for-the-cloud-best-practices/
The following describes an application that spans various Availability Zones:
being highly available
having global reach
using an economy of scale
having elasticity
Answer is being highly available
What are the advantages of AWS Cloud elasticity?
Ensure web traffic is automatically spread across multiple AWS Regions.
Minimize storage costs by automatically archiving log data.
Enable AWS to automatically select the most cost-effective services.
Automatically adjust the required compute capacity to maintain consistent performance.
Answer is Automatically adjust the required compute capacity to maintain consistent performance.
Elasticity: once a system is scalable, elasticity means that there will be some “auto-scaling” so that the system can scale based on the load. This is “cloud-friendly”: pay-per-use, match demand, optimize costs
Reference:
https://aimconsulting.com/insights/blog/the-elastic-cloud-opportunity/
Which of the following IT responsibilities may AWS relieve a company's IT team of? (Select two.)
Patching database software
Storage capacity planning
Creating database schemas
Setting up access controls for data
Writing application code
Answer are; Patching database software and B. Storage capacity planning
One of AWS advantages - users do not need to ques capacity or plan it. A schema is part of your DATA, and the client owns the DATA
What is AWS accountable for under the AWS shared responsibility model?
Configuring Amazon VPC
Managing application code
Maintaining application traffic
Managing the network infrastructure
Answer is Managing the network infrastructure
Which of the following is a customer duty under the AWS shared responsibility model?
Installing security patches for the Xen and KVM hypervisors
Installing operating system patches for Amazon DynamoDB
Installing operating system security patches for Amazon EC2 database instances
Installing operating system security patches for Amazon RDS database instances
Answer is Installing operating system security patches for Amazon EC2 database instances
D is incorrect because RDS is managed database ,automated provisioning, OS patching done By AWS
Reference:
https://aws.amazon.com/compliance/shared-responsibility-model/
Which of the following is the customer's obligation under the AWS shared responsibility model?
Patching guest OS and applications
Patching and fixing flaws in the infrastructure
Physical and environmental controls
Configuration of AWS infrastructure devices
Answer is Patching guest OS and applications
Patch Management – AWS is responsible for patching and fixing flaws within the infrastructure, but customers are responsible for patching their guest OS and applications.
What is the AWS Cloud's value proposition?
AWS is responsible for security in the AWS Cloud
No long-term contract is required
Provision new servers in days
AWS manages user applications in the AWS Cloud
Answer is No long-term contract is required
AWS Support is a one-on-one, fast-response support channel that is staffed around the clock with technical support engineers and experienced customer service professionals who help customers get the most from the products and features provided by AWS. All AWS Support tiers offer an unlimited number of support cases with pay-by-the-month pricing and no long-term contracts. The four tiers provide developers and businesses the flexibility to choose the support tiers that meet their specific needs.
Reference:
https://d1.awsstatic.com/whitepapers/aws-whitepaper-business-value-of-aws.pdf
Which of the following describes elasticity in the AWS Cloud? (Select two.)
How quickly an Amazon EC2 instance can be restarted
The ability to rightsize resources as demand shifts
The maximum amount of RAM an Amazon EC2 instance can use
The pay-as-you-go billing model
How easily resources can be produced when they are needed
Answers are;
The ability to rightsize resources as demand shifts
E. How easily resources can be produced when they are needed
rightsize and ability to produce resource easily when needed
Reference:
https://blog.turbonomic.com/blog/on-technology/cloud-elasticity-vs-cloud-scalability
According to the AWS shared responsibility model, which of the following is exclusively the responsibility of AWS?
Patching of the guest operating system
Security awareness and training
Physical and environmental controls
Development of an IAM password policy
Answer is Physical and environmental controls
Reference:
br> https://aws.amazon.com/compliance/shared-responsibility-model/#:~:text=AWS%20responsibility%20%E2%80%9CSecurity%20of%20the
,that%20run %20AWS%20Cloud%20services