Question 371
A user has launched two EBS backed EC2 instances in the US-East-1a region. The user wants to change the zone of one of the instances. How can the user change it?
A. It is not possible to change the zone of an instance after it is launched
B. From the AWS EC2 console, select the Actions - > Change zones and specify the new zone
C. The zone can only be modified using the AWS CLI
D. Stop one of the instances and change the availability zone
Question 372
In Amazon Elastic Compute Cloud, you can specify storage volumes in addition to the root device volume when you create an AMI or when launching a new instance using______.
A. block device mapping
B. object mapping
C. batch storage mapping
D. datacenter mapping
Question 373
You create an Amazon Elastic File System (EFS) file system and mount targets for the file system in your Virtual Private Cloud (VPC). Identify the initial permissions you can grant to the group root of your file system.
A. write-execute-modify
B. read-execute
C. read-write-modify
D. read-write
Question 374
You want to mount an Amazon EFS file system on an Amazon EC2 instance using DNS names. Which of the following generic form of a mount target's DNS name must you use to mount the file system?
A. availability-zone.file-system-id.efs.aws-region.amazonaws.com
B. efs-system-id.availability-zone.file-aws-region.amazonaws.com
C. $file-system-id.$availability-zone.$efs.aws-region.$amazonaws.com
D. #aws-region.#availability-zone.#file-system-id.#efs.#amazonaws.com
Question 375
A user is creating a Provisioned IOPS volume. What is the maximum ratio the user should configure between Provisioned IOPS and the volume size?
A. 30 to 1
B. 50 to 1
C. 10 to 1
D. 20 to 1
Question 376
Your Application is not highly available, and your on-premises server cannot access the mount target because the Availability Zone (AZ) in which the mount target exists is unavailable.
Which of the following actions is recommended?
A. The application must implement the checkpoint logic and recreate the mount target.
B. The application must implement the shutdown logic and delete the mount target in the AZ.
C. The application must implement the delete logic and connect to a different mount target in the same AZ.
D. The application must implement the restart logic and connect to a mount target in a different AZ.
Question 377
Which of the following Amazon RDS storage types is ideal for applications with light or burst I/O requirements?
A. Both magnetic and Provisioned IOPS storage
B. Magnetic storage
C. Provisioned IOPS storage
D. None of these
Question 378
When I/O performance is more important than fault tolerance, which of the following configurations should be used?
A. SPAN 10
B. RAID 1
C. RAID 0
D. NFS 1
Question 379
Amazon Elastic File System (EFS) provides information about the space used for an object by using the space _ used attribute of the Network File System Version4.1 (NFSv4.1). The attribute includes the object's current metered data size and not the metadata size. Which of the following utilities will you use to measure the amount of disk that is used of a file?
A. blkid utility
B. du utility
C. sfdisk utility
D. pydf utility
Question 380
You have custom Network File System (NFS) client settings for your Amazon Elastic File System (EFS). It takes up to three seconds for an Amazon ElasticCompute Cloud (EC2) instance to see a write operation performed on a file system from another Amazon EC2 instance.
Which of the following actions should you take to solve the custom NFS settings from causing delays in the write operation?
A. Unmount and remount the file system with the noac option to disable attribute caching.
B. Reduce the number of active users that have files open simultaneously on the instances.
C. Verify that the IP address of the specified mount target is valid.
D. Run the write operation from a different user ID on the same Amazon EC2 instance.