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Q101. – (Topic 3) 

A root account owner is trying to understand the S3 bucket ACL. Which of the below mentioned options cannot be used to grant ACL on the object using the authorized predefined group? 

A. Authenticated user group 

B. All users group 

C. Log Delivery Group 

D. Canonical user group 

Answer:

Explanation: 

An S3 bucket ACL grantee can be an AWS account or one of the predefined Amazon S3 groups. Amazon S3 has a set of predefined groups. When granting account access to a group, the user can specify one of the URLs of that group instead of a canonical user ID. AWS S3 has the following predefined groups: Authenticated Users group: It represents all AWS accounts. All Users group: Access permission to this group allows anyone to access the resource. Log Delivery group: WRITE permission on a bucket enables this group to write server access logs to the bucket. 

Q102. – (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:

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. 

Q103. – (Topic 3) 

A user has configured Auto Scaling with the minimum capacity as 2 and the desired capacity as 2. The user is trying to terminate one of the existing instance with the command: 

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

What will Auto Scaling do in this scenario? 

A. Terminates the instance and does not launch a new instance 

B. Terminates the instance and updates the desired capacity to 1 

C. Terminates the instance and updates the desired capacity and minimum size to 1 

D. Throws an error 

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 –decrement-desired-capacity. Then Auto Scaling will terminate the instance and decrease the desired capacity by 1. In this case since the minimum size is 2, Auto Scaling will not allow the desired capacity to go below 2. Thus, it will throw an error. 

Q104. – (Topic 2) 

An organization (Account ID 123412341234. has attached the below mentioned IAM policy 

to a user. What does this policy statement entitle the user to perform? 

"Statement": [ 

"Sid": "AllowUsersAllActionsForCredentials", 

"Effect": "Allow", 

"Action": [ 

"iam:*AccessKey*", 

], 

"Resource": ["arn:aws:iam:: 123412341234:user/${aws:username}"] 

A. 0 

B. 0 

C. 0 

D. 0 

Answer:

Explanation: 

AWS Identity and Access Management is a web service which allows organizations to manage users and user permissions for various AWS services. If the organization (Account ID 123412341234. wants some of their users to manage keys (access and secret access keys. of all IAM users, the organization should set the below mentioned policy which entitles the IAM user to modify keys of all IAM users with CLI, SDK or API. 

"Statement": [ 

"Sid": "AllowUsersAllActionsForCredentials", 

"Effect": "Allow", 

"Action": [ 

"iam:*AccessKey*", 

], 

"Resource": ["arn:aws:iam:: 123412341234:user/${aws:username}"] 

Q105. – (Topic 3) 

You run a web application with the following components Elastic Load Balancer (EL8), 3 Web/Application servers, 1 MySQL RDS database with read replicas, and Amazon Simple Storage Service (Amazon S3) for static content. Average response time for users is increasing slowly. 

What three CloudWatch RDS metrics will allow you to identify if the database is the bottleneck? Choose 3 answers 

A. The number of outstanding IOs waiting to access the disk. 

B. The amount of write latency. 

C. The amount of disk space occupied by binary logs on the master. 

D. The amount of time a Read Replica DB Instance lags behind the source DB Instance 

E. The average number of disk I/O operations per second. 

Answer: A,B,D 

Q106. – (Topic 2) 

A user is planning to setup notifications on the RDS DB for a snapshot. Which of the below mentioned event categories is not supported by RDS for this snapshot source type? 

A. Backup 

B. Creation 

C. Deletion 

D. Restoration 

Answer:

Explanation: 

Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event occurs. Event categories for a snapshot source type include: Creation, Deletion, and Restoration. The Backup is a part of DB instance source type. 

Q107. – (Topic 3) 

A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR 20.0.0.0/16 in this VPC. The user is trying to create another subnet with the same VPC for CIDR 20.0.0.1/24. What will happen in this scenario? 

A. The VPC will modify the first subnet CIDR automatically to allow the second subnet IP range 

B. It is not possible to create a subnet with the same CIDR as VPC 

C. The second subnet will be created 

D. It will throw a CIDR overlaps error 

Answer:

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. The user can create a subnet with the same size of VPC. However, he cannot create any other subnet since the CIDR of the second subnet will conflict with the first subnet. 

Q108. – (Topic 3) 

A user has configured ELB with Auto Scaling. The user suspended the Auto Scaling AddToLoadBalancer 

(which adds instances to the load balancer. process for a while. What will happen to the instances launched during the suspension period? 

A. The instances will not be registered with ELB and the user has to manually register when the process is resumed 

B. The instances will be registered with ELB only once the process has resumed 

C. Auto Scaling will not launch the instance during this period due to process suspension 

D. It is not possible to suspend only the AddToLoadBalancer process 

Answer:

Explanation: 

Auto Scaling performs various processes, such as Launch, Terminate, add to Load Balancer etc. The user can also suspend the individual process. The AddToLoadBalancer process type adds instances to the load balancer when the instances are launched. If this process is suspended, Auto Scaling will launch the instances but will not add them to the load balancer. When the user resumes this process, Auto Scaling will resume adding new instances launched after resumption to the load balancer. However, it will not add running instances that were launched while the process was suspended; those instances must be added manually. 

Q109. – (Topic 1) 

Which of the following are characteristics of Amazon VPC subnets? 

Choose 2 answers 

A. Each subnet maps to a single Availability Zone 

B. A CIDR block mask of /25 is the smallest range supported 

C. Instances in a private subnet can communicate with the internet only if they have an Elastic IP. 

D. By default, all subnets can route between each other, whether they are private or public 

E. V Each subnet spans at least 2 Availability zones to provide a high-availability environment 

Answer: C,E 

Q110. – (Topic 1) 

You have a web application leveraging an Elastic Load Balancer (ELB) In front of the web servers deployed using an Auto Scaling Group Your database is running on Relational 

Database Service (RDS) The application serves out technical articles and responses to them in general there are more views of an article than there are responses to the article. On occasion, an article on the site becomes extremely popular resulting in significant traffic Increases that causes the site to go down. 

What could you do to help alleviate the pressure on the infrastructure while maintaining availability during these events? 

Choose 3 answers 

A. Leverage CloudFront for the delivery of the articles. 

B. Add RDS read-replicas for the read traffic going to your relational database 

C. Leverage ElastiCache for caching the most frequently used data. 

D. Use SOS to queue up the requests for the technical posts and deliver them out of the queue. 

E. Use Route53 health checks to fail over to an S3 bucket for an error page. 

Answer: A,C,E 

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