[2021-New] Amazon AWS-SysOps Dumps With Update Exam Questions (141-150)

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Q1. A user has deployed an application on his private cloud. The user is using his own monitoring tool. He wants to configure that whenever there is an error, the monitoring tool should notify him via SMS. Which of the below mentioned AWS services will help in this scenario?

A. None because the user infrastructure is in the private cloud/

B. AWS SNS

C. AWS SES

D. AWS SMS

Answer: B

Amazon Simple Notification Service (Amazon SNS. is a fast, flexible, and fully managed push messaging service. Amazon SNS can be used to make push notifications to mobile

devices. Amazon SNS can deliver notifications by SMS text message or email to the Amazon Simple Queue Service (SQS. queues or to any HTTP endpoint. In this case user can use the SNS apis to send SMS.

Q2. - (Topic 2)

A user has developed an application which is required to send the data to a NoSQL database. The user wants to decouple the data sending such that the application keeps processing and sending data but does not wait for an acknowledgement of DB. Which of the below mentioned applications helps in this scenario?

A. AWS Simple Notification Service

B. AWS Simple Workflow

C. AWS Simple Queue Service

D. AWS Simple Query Service

Answer: C

Explanation:

Amazon Simple Queue Service (SQS. is a fast, reliable, scalable, and fully managed message queuing service. SQS provides a simple and cost-effective way to decouple the components of an application. In this case, the user can use AWS SQS to send messages which are received from an application and sent to DB. The application can continue processing data without waiting for any acknowledgement from DB. The user can use SQS to transmit any volume of data without losing messages or requiring other services to always be available.

Q3. - (Topic 3)

Your business is building a new application that will store its entire customer database on a RDS MySQL database, and will have various applications and users that will query that data for different purposes.

Large analytics jobs on the database are likely to cause other applications to not be able to get the query results they need to, before time out. Also, as your data grows, these analytics jobs will start to take more time, increasing the negative effect on the other applications.

How do you solve the contention issues between these different workloads on the same data?

A. Enable Multi-AZ mode on the RDS instance

B. Use ElastiCache to offload the analytics job data

C. Create RDS Read-Replicas for the analytics work

D. Run the RDS instance on the largest size possible

Answer: B

Q4. - (Topic 1)

You have a server with a 5O0GB Amazon EBS data volume. The volume is 80% full. You need to back up the volume at regular intervals and be able to re-create the volume in a new Availability Zone in the shortest time possible. All applications using the volume can be paused for a period of a few minutes with no discernible user impact.

Which of the following backup methods will best fulfill your requirements?

A. Take periodic snapshots of the EBS volume

B. Use a third party Incremental backup application to back up to Amazon Glacier

C. Periodically back up all data to a single compressed archive and archive to Amazon S3 using a parallelized multi-part upload

D. Create another EBS volume in the second Availability Zone attach it to the Amazon EC2 instance, and use a disk manager to mirror me two disks

Answer: D

Explanation: Reference:

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-creating-snapshot.html

Q5. - (Topic 1)

Which of the following statements about this S3 bucket policy is true?

A. Denies the server with the IP address 192 168 100 0 full access to the "mybucket" bucket

B. Denies the server with the IP address 192 168 100 188 full access to the "mybucket" bucket

C. Grants all the servers within the 192 168 100 0/24 subnet full access to the "mybucket" bucket

D. Grants all the servers within the 192 168 100 188/32 subnet full access to the "mybucket" bucket

Answer: B

Q6. - (Topic 2)

A user has launched an EC2 instance from an instance store backed AMI. The infrastructure team wants to create an AMI from the running instance. Which of the below mentioned steps will not be performed while creating the AMI?

A. Define the AMI launch permissions

B. Upload the bundled volume

C. Register the AMI

D. Bundle the volume

Answer: A

Explanation:

When the user has launched an EC2 instance from an instance store backed AMI, it will need to follow certain steps, such as “Bundling the root volume”, “Uploading the bundled volume” and “Register the AMI”. Once the AMI is created the user can setup the launch permission. However, it is not required to setup during the launch.

Q7. - (Topic 1)

You have an Auto Scaling group associated with an Elastic Load Balancer (ELB). You have noticed that instances launched via the Auto Scaling group are being marked unhealthy due to an ELB health check, but these unhealthy instances are not being terminated

What do you need to do to ensure trial instances marked unhealthy by the ELB will be terminated and replaced?

A. Change the thresholds set on the Auto Scaling group health check

B. Add an Elastic Load Balancing health check to your Auto Scaling group

C. Increase the value for the Health check interval set on the Elastic Load Balancer

D. Change the health check set on the Elastic Load Balancer to use TCP rather than HTTP checks

Answer: B

Explanation: Reference:

http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/as-add-elb-healthcheck.html

Add an Elastic Load Balancing Health Check to your Auto Scaling Group

By default, an Auto Scaling group periodically reviews the results of EC2 instance status to determine the health state of each instance. However, if you have associated your Auto Scaling group with an Elastic Load Balancing load balancer, you can choose to use the Elastic Load Balancing health check. In this case, Auto Scaling determines the health status of your instances by checking the results of both the EC2 instance status check and the Elastic Load Balancing instance health check.

For information about EC2 instance status checks, see.Monitor Instances With Status Checks.in the.Amazon EC2 User Guide for Linux Instances. For information about Elastic Load Balancing health checks, see.Health Check.in the.Elastic Load Balancing Developer Guide.

This topic shows you how to add an Elastic Load Balancing health check to your Auto Scaling group, assuming that you have created a load balancer and have registered the load balancer with your Auto Scaling group. If you have not registered the load balancer with your Auto Scaling group, see.Set Up a Scaled and Load-Balanced Application.

Auto Scaling marks an instance unhealthy if the calls to the Amazon EC2 action.DescribeInstanceStatus.return any state other than.running, the system status shows.impaired, or the calls to Elastic Load Balancing action.DescribeInstanceHealth.returns.OutOfService.in the instance state field.

If there are multiple load balancers associated with your Auto Scaling group, Auto Scaling checks the health state of your EC2 instances by making health check calls to each load balancer. For each call, if the Elastic Load Balancing action returns any state other than.InService, the instance is marked as unhealthy. After Auto Scaling marks an instance as unhealthy, it remains in that state, even if subsequent calls from other load balancers return an.InService.state for the same instance.

Q8. - (Topic 2)

A root AWS account owner is trying to understand various options to set the permission to AWS S3. Which of the below mentioned options is not the right option to grant permission for S3?

A. User Access Policy

B. S3 Object Access Policy

C. S3 Bucket Access Policy

D. S3 ACL

Answer: B

Explanation:

Amazon S3 provides a set of operations to work with the Amazon S3 resources. Managing S3 resource access refers to granting others permissions to work with S3. There are three ways the root account owner can define access with S3: S3 ACL: The user can use ACLs to grant basic read/write permissions to other AWS accounts. S3 Bucket Policy: The policy is used to grant other AWS accounts or IAM users permissions for the bucket and the objects in it. User Access Policy: Define an IAM user and assign him the IAM policy which grants him access to S3.

Q9. - (Topic 1)

Which of the following requires a custom CloudWatch metric to monitor?

A. Data transfer of an EC2 instance

B. Disk usage activity of an EC2 instance

C. Memory Utilization of an EC2 instance

D. CPU Utilization of an EC2 instance

Answer: C

Explanation: Reference:

http://aws.amazon.com/cloudwatch/

Q10. - (Topic 1)

A media company produces new video files on-premises every day with a total size of around 100GBS after compression All files have a size of 1 -2 GB and need to be uploaded to Amazon S3 every night in a fixed time window between 3am and 5am Current upload takes almost 3 hours, although less than half of the available bandwidth is used.

What step(s) would ensure that the file uploads are able to complete in the allotted time window?

A. Increase your network bandwidth to provide faster throughput to S3

B. Upload the files in parallel to S3

C. Pack all files into a single archive, upload it to S3, then extract the files in AWS

D. Use AWS Import/Export to transfer the video files

Answer: B

Explanation: Reference:

http://aws.amazon.com/importexport/faqs/