AWS TEST STUDY GUIDE 1

Which of the following best describes a system that can withstand some measures of degradation, experiences minimal downtime, and requires minimal human intervention?

A highly available system

A solutions architect is developing a process for handling server failures. Which process most closely follows AWS best practices?

Amazon CloudWatch detects a system failure. It triggers automation to provision a new server.

which of the following services can help you collect important metrics for Amazon Relational Database Service (Amazon RDS) and Amazon EC2 instances?

Amazon CloudWatch is a monitoring service for AWS cloud resources and the applications you run on AWS.

Characteristics of Amazon EC2 Auto Scaling

Amazon EC2 Auto Scaling responds to changing conditions by adding or terminating instances, launches instances from an AMI, and enforces a minimum number of running Amazon EC2 instances.

A company wants to use an S3 bucket to store sensitive data. Which actions can they take to protect their data?

Amazon S3 server-side encryption must be enabled on a bucket before uploading objects. Existing objects must be re-uploaded to be encrypted at rest. Server-side encryption does not encrypt data in transit, use client-side encryption instead.

A video producer must regularly transfer several video files to Amazon S3. The files range from 1000-700 MB. The internet connection has been unreliable, causing some uploads to fail. Which solution provides the fastest most reliable and most cost-effective?

Amazon multipart uploads

What are the 3 types of load balancers that Elastic load balancer offers?

Application Load Balancer, Network Load Balancer, and Classic Load Balancer.

Which of the following is a principle when designing cloud-based systems?

Assume everything will fail.

What are the main considerations that influence which Availability Zones to use?

Each Availability Zone is designed as an independent failure zone. Using multiple Availability Zones protects workloads against localized natural disasters, and increases application resiliency is systems fail.

AWS Aurora

Enterprise-class relational database. Compatible with MySQL or PostgreSQL. Automate time-consuming Tasks (such as provisioning, patching, backup, recovery, failure detection, and repair).

A consultant must access a large object in an S3 bucket. They need a day to access the file. Which method for granting access most closely follows AWS?

Example of granular access control and least privilege

What is defined as the ability for a system to remain operational even if some of the components of that system fail?

Fault tolerance

AWS SnowballI

Good for transferring dozens of TB to petabytes (PB) of data to AWS. Local data transfer to a Snowball device is faster than transferring directly to a Amazon S3 over the internet.

A company is interested in using Amazon Storage Service alone to host their website, instead of a traditional server. Which types of content does Amazon S3 support for static web hosting?

HTML Files, Client-side scripts, and Videos and sound files.

When the load balancer detects an unhealthy target, which of the following are true?

It stops routing traffic to that target and sends it to a healthy target. It then resumes routing traffic to that target when it detects that the target is healthy again.

Which of the following elements are used to create an Amazon EC2 Auto Scaling launch configuration?

You specify the AMI, instance type, and EBS volumes.

Which design principles are recommended when considering performance effiency?

Use serverless architectures and democratize advanced technologies.

Which service would you use to send alerts based on Amazon CloudWatch alarms? A. Amazon Simple Notification Service B. AWS CloudTrail C. AWS Trusted Advisor D. Amazon Route 53

A. Amazon Simple Notification Service

After you move to the AWS Cloud, you want to ensure that the right security settings are put in place. Which online tool can assist in security compliance?

AWS Trusted Advisor is an online resource to help you reduce cost, increase performance, and improve security by optimizing your AWS environment

Which of the following is a fully managed NoSQL database service? A. Amazon RDS B. Amazon DynamoDB C. Amazon Aurora D. Amazon Redshift

B. Amazon DynamoDB

Which scenarios represent a good use for Amazon Simple Storage Service (Amazon S3)?

Backing up critical data, Storing computation and large-scale analytics data

Which qualities vary by AWS Region?

Cost-efficiency and service

A SysOps engineer working at a company wants to protect their data in transit and at rest. What services could they use to protect their data? A. Elastic Load Balancing B. Amazon Elastic Block Store (Amazon EBS) C. Amazon Simple Storage Service (Amazon S3) D. All of the above

D. All of the Above

A customer service team accesses case data daily for up to 30 days. Cases can be reopened and require immediate access for 1 year after they are closed. Reopened cases require 2 days to process. Which solution meets the requirements and is the most cost-efficient?

Items can be restored in a matter of hours. With an SLA and a remediation time of 1 day, there is time to recover the item from Glacier, which is the most cost-effective object store option.

What are the main considerations that influence which AWS Regions to use?

Latency and Compliance

Application Load Balancer

Load balancing of HTTP and HTTPS traffic. Routes traffic to targets based on content of request. Provides advanced request routing targeted at the delivery of modern application architectures, including microservices and containers. Operates at the application layer (OSI model layer 7).

Classic Load Balancer (Previous Generation)

Load balancing of HTTP, HTTPS, TPC, and SSL traffic. Load balancing across multiple EC2 instances. Operates at both the application and transport layers.

Network Load Balancer

Load balancing of TCP, UDP, and TLS traffic where extreme performance is required. Routes traffic to targets based on IP protocol data. Can handle millions of requests per second while maintaining ultra-low latencies. Is optimized to handle sudden and volatile traffic patterns. Operates at the transport layer (OSI model layer 4)

A company must create a common place to store shared files. Which requirements does Amazon S3 support?

Maintenance of different versions and recovery of deleted files.

Which actions are consist with the operational excellence pillar of the AWS Well-Architected Framework?

Managing hardware assets is an on-premises concern. Evaluating organizations and roles to identify skill gaps is part of the people perspective of the AWS Cloud Adoption Framework. Manual documentation violates the operational excellence pillar.

Amazon CloudWatch

Monitors- AWS resources, applications that run on AWS. Collects and tracks- Standard metrics, custom metrics. Alarms- Send notifications to an Amazon SNS topic, Perform Amazon EC2 auto scaling or Amazon EC2 actions. Events- Define rules to match changes in AWS environment and route these events to one or more target functions or streams for processing.

Which Amazon S3 unaccelerated data transfers have an associated cost?

OUT to the internet, OUT to other AWS services.

Which actions are consistent with the operational excellence pillar of the AWS Well-Architected Framework?

Operational excellence focuses on systems operations that deliver businesses value, and continually improving processes and procedures. A key design principle is to perform operations as code, and apply the same engineering discipline that is used for application code.

Which of the following are pillars of the AWS Well-Architected Framework?

Operational excellence, security, and cost optimization.

AWS Trusted Advisor provides insight regarding which five categories of AWS account?

Performance, cost optimization, security, fault tolerance, and service limits.

Which of the following is a measure of your system's ability to provide functionality when desired by the user?

Reliability is a measure of your system's ability to provide functionality when desired by the user.

The AWS Well-Architected Framework has five pillars. Two of the pillars are security and operational excellence. What are the other pillar?

Reliability, Performance, Cost Optimization

What is the focus of the sustainability pillar of the Well-Architected Framework?

The cost optimization pillar focuses on avoiding unnecessary costs.

Which of the following is not one of the four areas of the performance efficiency pillar of the AWS Well-Architected Framework?

Tradeoffs

Amazon EC2 Auto Scaling

helps you maintain application availability and allows you to automatically add or remove EC2 instances according to conditions you define. Detects impaired EC2 instances and unhealthy applications, and replaces the instances without your intervention. Provides several scaling options- Manual, scheduled, dynamic or on-demand, and predictive.