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Q91. – (Topic 2) 

A system admin is managing buckets, objects and folders with AWS S3. Which of the below mentioned statements is true and should be taken in consideration by the sysadmin? 

A. The folders support only ACL 

B. Both the object and bucket can have an Access Policy but folder cannot have policy 

C. Folders can have a policy 

D. Both the object and bucket can have ACL but folders cannot have ACL 

Answer:

Explanation: 

A sysadmin can grant permission to the S3 objects or the buckets to any user or make objects public using the bucket policy and user policy. Both use the JSON-based access policy language. Generally if user is defining the ACL on the bucket, the objects in the bucket do not inherit it and vice a versa. The bucket policy can be defined at the bucket level which allows the objects as well as the bucket to be public with a single policy applied to that bucket. It cannot be applied at the object level. The folders are similar to objects with no content. Thus, folders can have only ACL and cannot have a policy. 

Q92. – (Topic 1) 

What are characteristics of Amazon S3? Choose 2 answers 

A. Objects are directly accessible via a URL 

B. S3 should be used to host a relational database 

C. S3 allows you to store objects or virtually unlimited size 

D. S3 allows you to store virtually unlimited amounts of data 

E. S3 offers Provisioned IOPS 

Answer: A,D 

Q93. – (Topic 1) 

You need to design a VPC for a web-application consisting of an Elastic Load Balancer (ELB). a fleet of web/application servers, and an RDS database The entire Infrastructure must be distributed over 2 availability zones. 

Which VPC configuration works while assuring the database is not available from the Internet? 

A. One public subnet for ELB one public subnet for the web-servers, and one private subnet for the database 

B. One public subnet for ELB two private subnets for the web-servers, two private subnets for RDS 

C. Two public subnets for ELB two private subnets for the web-servers and two private subnets for RDS 

D. Two public subnets for ELB two public subnets for the web-servers, and two public subnets for RDS 

Answer:

Q94. – (Topic 2) 

A user has configured the Auto Scaling group with the minimum capacity as 3 and the maximum capacity as 5. When the user configures the AS group, how many instances will Auto Scaling launch? 

A. 3 

B. 0 

C. 5 

D. 2 

Answer:

Q95. – (Topic 2) 

An organization wants to move to Cloud. They are looking for a secure encrypted database storage option. Which of the below mentioned AWS functionalities helps them to achieve this? 

A. AWS MFA with EBS 

B. AWS EBS encryption 

C. Multi-tier encryption with Redshift 

D. AWS S3 server side storage 

Answer:

Explanation: 

AWS EBS supports encryption of the volume while creating new volumes. It also supports creating volumes from existing snapshots provided the snapshots are created from encrypted volumes. The data at rest, the I/O as well as all the snapshots of EBS will be encrypted. The encryption occurs on the servers that host the EC2 instances, providing encryption of data as it moves between the EC2 instances and EBS storage. EBS encryption is based on the AES-256 cryptographic algorithm, which is the industry standard 

Q96. – (Topic 2) 

A user has created an ELB with the availability zone US-East-1A. The user wants to add more zones to ELB to achieve High Availability. How can the user add more zones to the existing ELB? 

A. It is not possible to add more zones to the existing ELB 

B. The only option is to launch instances in different zones and add to ELB 

C. The user should stop the ELB and add zones and instances as required 

D. The user can add zones on the fly from the AWS console 

Answer:

Explanation: 

The user has created an Elastic Load Balancer with the availability zone and wants to add more zones to the existing ELB. The user can do so in two ways: 

From the console or CLI, add new zones to ELB; 

Launch instances in a separate AZ and add instances to the existing ELB. 

Q97. – (Topic 3) 

A user has configured Auto Scaling with 3 instances. The user had created a new AMI after updating one of the instances. If the user wants to terminate two specific instances to ensure that Auto Scaling launches an instances with the new launch configuration, which command should he run? 

A. as-delete-instance-in-auto-scaling-group <Instance ID> –no-decrement-desired-capacity 

B. as-terminate-instance-in-auto-scaling-group <Instance ID> –update-desired-capacity 

C. as-terminate-instance-in-auto-scaling-group <Instance ID> –decrement-desired-capacity 

D. as-terminate-instance-in-auto-scaling-group <Instance ID> –no-decrement-desired-capacity 

Answer:

Explanation: 

The Auto Scaling command as-terminate-instance-in-auto-scaling-group <Instance ID> will terminate the specific instance ID. The user is required to specify the parameter as –no-decrement-desired-capacity to ensure that it launches a new instance from the launch config after terminating the instance. If the user specifies the parameter –decrement-desired-capacity then Auto Scaling will terminate the instance and decrease the desired capacity by 1. 

Q98. – (Topic 3) 

A user has enabled termination protection on an EC2 instance. The user has also set Instance initiated 

shutdown behaviour 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 

Answer:

Explanation: 

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 behaviour 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 behaviour. If the instance initiated behaviour is set to terminate and the user shuts off the OS even though termination protection is enabled, it will still terminate the instance. 

Q99. – (Topic 3) 

A user has configured ELB with Auto Scaling. The user suspended the Auto Scaling AlarmNotification (which notifies Auto Scaling for CloudWatch alarms. process for a while. What will Auto Scaling do during this period? 

A. AWS will not receive the alarms from CloudWatch 

B. AWS will receive the alarms but will not execute the Auto Scaling policy 

C. Auto Scaling will execute the policy but it will not launch the instances until the process is resumed 

D. It is not possible to suspend the AlarmNotification process 

Answer:

Explanation: 

Auto Scaling performs various processes, such as Launch, Terminate Alarm Notification etc. The user can also suspend individual process. The AlarmNotification process type accepts notifications from the Amazon CloudWatch alarms that are associated with the Auto Scaling group. If the user suspends this process type, Auto Scaling will not automatically execute the scaling policies that would be triggered by the alarms. 

Q100. – (Topic 2) 

A user is trying to delete an Auto Scaling group from CLI. Which of the below mentioned steps are to be performed by the user? 

A. Terminate the instances with the ec2-terminate-instance command 

B. Terminate the Auto Scaling instances with the as-terminate-instance command 

C. Set the minimum size and desired capacity to 0 

D. There is no need to change the capacity. Run the as-delete-group command and it will reset all values to 0 

Answer:

Explanation: 

If the user wants to delete the Auto Scaling group, the user should manually set the values of the minimum and desired capacity to 0. Otherwise Auto Scaling will not allow for the deletion of the group from CLI. While trying from the AWS console, the user need not set 

the values to 0 as the Auto Scaling console will automatically do so. 

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