Amazon SAP-C01 Practice Test - Questions Answers, Page 21
List of questions
Question 201
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A company needs to run a software package that has a license that must be run on the same physical host for the duration of its use. The software package is only going to be used for 90 days. The company requires patching and restarting of all instances every 30 days.
How can these requirements be met using AWS?
Explanation:
Reference: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/how-dedicated-hosts-work.html
Question 202
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A company is running a workload that consists of thousands of Amazon EC2 instances. The workload is running in a VPC that contains several public subnets and private subnets. The public subnets have a route for 0.0.0.0/0 to an existing internet gateway. The private subnets have a route for 0.0.0.0/0 to an existing NAT gateway.
A solutions architect needs to migrate the entire fleet of EC2 instances to use IPv6. The EC2 instances that are in private subnets must not be accessible from the public internet. What should the solutions architect do to meet these requirements?
Question 203
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A user wants to create a public subnet in VPC and launch an EC2 instance within it. The user has not selected the option to assign a public IP address while launching the instance. Which of the below mentioned statements is true with respect to this scenario?
Explanation:
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user's AWS account. A user can create a subnet with VPC and launch instances inside that subnet. When the user is launching an instance he needs to select an option which attaches a public IP to the instance. If the user has not selected the option to attach the public IP, then it will only have a private IP when launched. The user cannot connect to the instance from the internet. If the user wants an elastic IP to connect to the instance from the internet, he should create an internet gateway and assign an elastic IP to instance.
Reference: http://docs.aws.amazon.com/AmazonVPC/latest/GettingStartedGuide/LaunchInstance.html
Question 204
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You have set up a huge amount of network infrastructure in AWS and you now need to think about monitoring all of this. You decide CloudWatch will best fit your needs but you are unsure of the pricing structure and the limitations of CloudWatch.
Which of the following statements is TRUE in relation to the limitations of CloudWatch?
Explanation:
Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in realtime. You can use CloudWatch to collect and track metrics, which are the variables you want to measure for your resources and applications. CloudWatch has the following limits:
You get 10 CloudWatch metrics, 10 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free. You can assign up to 10 dimensions per metric. You can create up to 5000 alarms per AWS account. Metric data is kept for 2 weeks.
The size of a PutMetricData request is limited to 8KB for HTTP GET requests and 40KB for HTTP POST requests. You can include a maximum of 20 MetricDatum items in one PutMetricData request. A MetricDatum can contain a single value or a StatisticSet representing many values.
Reference: http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/cloudwatch_limits.html
Question 205
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A company must deploy multiple independent instances of an application. The front-end application is internet accessible. However, corporate policy stipulates that the backends are to be isolated from each other and the internet, yet accessible from a centralized administration server. The application setup should be automated to minimize the opportunity for mistakes as new instances are deployed.
Which option meets the requirements and MINIMIZES costs?
Question 206
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A web design company currently runs several FTP servers that their 250 customers use to upload and download large graphic files They wish to move this system to AWS to make it more scalable, but they wish to maintain customer privacy and Keep costs to a minimum.
What AWS architecture would you recommend?
Explanation:
Reference:
https://aws.amazon.com/blogs/security/writing-iam-policies-grant-access-to-user-specific-folders- in-an-amazon-s3-bucket/
Question 207
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How many g2.2xlarge on-demand instances can a user run in one region without taking any limit increase approval from AWS?
Explanation:
Generally, AWS EC2 allows running 20 on-demand instances and 100 spot instances at a time. This limit can be increased by requesting at https://aws.amazon.com/contact-us/ec2-request. Excluding certain types of instances, the limit is lower than mentioned above. For g2.2xlarge, the user can run only 5 on-demand instance at a time.
Reference: http://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html#limits_ec2
Question 208
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A company has a complex web application that leverages Amazon CloudFront for global scalability and performance. Over time, users report that the web application is slowing down. The company’s operations team reports that the CloudFront cache hit ratio has been dropping steadily. The cache metrics report indicates that query strings on some URLs are inconsistently ordered and are specified sometimes in mixed- case letters and sometimes in lowercase letters.
Which set of actions should the solutions architect take to increase the cache hit ratio as quickly possible?
Question 209
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A solutions architect must implement a multi-Region architecture for an Amazon RDS for PostgreSQL database that supports a web application. The database launches from an AWS CloudFormation template that includes AWS services and features that are present in both the primary and secondary Regions.
The database is configured for automated backups, and it has an RTO of 15 minutes and an RPO of 2 hours. The web application is configured to use an Amazon Route 53 record to route traffic to the database. Which combination of steps will result in a highly available architecture that meets all the requirements? (Choose two.)
Explanation:
Reference: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-types.html
Question 210
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A user is thinking to use EBS PIOPS volume.
Which of the below mentioned options is a right use case for the PIOPS EBS volume?
Explanation:
Provisioned IOPS volumes are designed to meet the needs of I/O-intensive workloads, particularly database workloads that are sensitive to storage performance and consistency in random access I/O throughput. Provisioned IOPS volumes are designed to meet the needs of I/O-intensive workloads, particularly database workloads, that are sensitive to storage performance and consistency in random access I/O throughput business applications, database workloads, such as NoSQL DB, RDBMS, etc.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html
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