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AWS-SysOps: AWS Certified SysOps Administrator
Page 23 out of 91 pages Questions 221-230 out of 910 questions
Question#221

A user has enabled termination protection on an EC2 instance. The user has also set Instance initiated shutdown behavior to terminate. When the user shuts down the instance from the OS, what will happen?

  • A. The OS will shutdown but the instance will not be terminated due to protection
  • B. It will terminate the instance
  • C. It will not allow the user to shutdown the instance from the OS
  • D. It is not possible to set the termination protection when an Instance initiated shutdown is set to Terminate
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B
It is always possible that someone can terminate an EC2 instance using the Amazon EC2 console, command line interface or API by mistake. If the admin wants to prevent the instance from being accidentally terminated, he can enable termination protection for that instance. The user can also setup shutdown behavior for an EBS backed instance to guide the instance on what should be done when he initiates shutdown from the OS using Instance initiated shutdown behavior. If the instance initiated behavior is set to terminate and the user shuts off the OS even though termination protection is enabled, it will still terminate the instance.

Question#222

A user has deployed an application on an EBS backed EC2 instance. For a better performance of application, it requires dedicated EC2 to EBS traffic. How can the user achieve this?

  • A. Launch the EC2 instance as EBS dedicated with PIOPS EBS
  • B. Launch the EC2 instance as EBS enhanced with PIOPS EBS
  • C. Launch the EC2 instance as EBS dedicated with PIOPS EBS
  • D. Launch the EC2 instance as EBS optimized with PIOPS EBS
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D
Any application which has performance sensitive workloads and requires minimal variability with dedicated EC2 to EBS traffic should use provisioned IOPS EBS volumes, which are attached to an EBS-optimized EC2 instance or it should use an instance with 10 Gigabit network connectivity. Launching an instance that is
EBS optimized provides the user with a dedicated connection between the EC2 instance and the EBS volume.

Question#223

A user has launched a Windows based EC2 instance. However, the instance has some issues and the user wants to check the log. When the user checks the
Instance console output from the AWS console, what will it display?

  • A. All the event logs since instance boot
  • B. The last 10 system event log error
  • C. The Windows instance does not support the console output
  • D. The last three system events' log errors
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D
The AWS EC2 console provides a useful tool called Console output for problem diagnosis. It is useful to find out any kernel issues, termination reasons or service configuration issues. For a Windows instance it lists the last three system event log errors. For Linux it displays the exact console output.

Question#224

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

  • A. Denies the server with the IP address 192.166 100.0 full access to the "mybucket" bucket
  • B. Denies the server with the IP address 192.166 100.188 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
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C

Question#225

Which services allow the customer to retain run administrative privileges or the underlying EC2 instances? (Choose two.)

  • A. AWS Elastic Beanstalk
  • B. Amazon Elastic Map Reduce
  • C. Elastic Load Balancing
  • D. Amazon Relational Database Service
  • E. Amazon Elastic Cache
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AB

Question#226

When an EC2 instance mat is backed by an S3-Based AMI is terminated, what happens to the data on the root volume?

  • A. Data is automatically deleted
  • B. Data is automatically saved as an EBS snapshot.
  • C. Data is unavailable until the instance is restarted
  • D. Data is automatically saved as an EBS volume.
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A

Question#227

How can you secure data at rest on an EBS volume?

  • A. Encrypt the volume using the S3 server-side encryption service.
  • B. Attach the volume to an instance using EC2's SSL interface.
  • C. Create an IAM policy that restricts read and write access to the volume.
  • D. Write the data randomly instead of sequentially.
  • E. Use an encrypted file system m top of the EBS volume.
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C
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/policies_examples.html

Question#228

In order to optimize performance for a compute cluster that requires low inter-node latency, which feature in the following list should you use?

  • A. AWS Direct Connect
  • B. Placement Groups
  • C. VPC private subnets
  • D. EC2 Dedicated Instances
  • E. Multiple Availability Zones
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B
A placement group is a logical grouping of instances within a single Availability Zone. Using placement groups enables applications to participate in a low-latency,
10 Gigabits per second (Gbps) network. Placement groups are recommended for applications that benefit from low network latency, high network throughput, or both. To provide the lowest latency, and the highest packet-per-second network performance for your placement group, choose an instance type that supports enhanced networking.

Question#229

Amazon EBS snapshots have which of the following two characteristics? (Choose two.)

  • A. EBS snapshots only save incremental changes from snapshot to snapshot
  • B. EBS snapshots can be created in real-time without stopping an EC2 instance
  • C. EBS snapshots can only be restored to an EBS volume of the same size or smaller
  • D. EBS snapshots can only be restored and mounted to an instance in the same Availability Zone as the original EBS volume
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AB

Question#230

You have a proprietary data store on-premises that must be backed up daily by dumping the data store contents to a single compressed 50GB file and sending the file to AWS. Your SLAs state that any dump file backed up within the past 7 days can be retrieved within 2 hours. Your compliance department has stated that all data must be held indefinitely. The time required to restore the data store from a backup is approximately 1 hour. Your on-premise network connection is capable of sustaining 1gbps to AWS.
Which backup methods to AWS would be most cost-effective while still meeting all of your requirements?

  • A. Send the daily backup files to Glacier immediately after being generated
  • B. Transfer the daily backup files to an EBS volume in AWS and take daily snapshots of the volume
  • C. Transfer the daily backup files to S3 and use appropriate bucket lifecycle policies to send to Glacier
  • D. Host the backup files on a Storage Gateway with Gateway-Cached Volumes and take daily snapshots
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C
Because in the stored volume mode, you are storing data locally, the binary-compressed format is already available, and the bandwidth of your AWS connection meets the 7days/2hour SLA.

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