AWS-SysOps Exam
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Q11. - (Topic 2)
A user has launched an ELB which has 5 instances registered with it. The user deletes the
ELB by mistake. What will happen to the instances?
A. ELB will ask the user whether to delete the instances or not
B. Instances will be terminated
C. ELB cannot be deleted if it has running instances registered with it
D. Instances will keep running
Answer: D
Explanation:
When the user deletes the Elastic Load Balancer, all the registered instances will be deregistered. However, they will continue to run. The user will incur charges if he does not take any action on those instances.
Q12. - (Topic 3)
How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?
A. Query the local instance metadata.
B. Query the appropriate Amazon CloudWatch metric.
C. Query the local instance userdata.
D. Use ipconfig or ifconfig command.
Answer: B
Q13. - (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: B
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.
Q14. - (Topic 2)
A user has received a message from the support team that an issue occurred 1 week back between 3 AM to 4 AM and the EC2 server was not reachable. The user is checking the CloudWatch metrics of that instance. How can the user find the data easily using the CloudWatch console?
A. The user can find the data by giving the exact values in the time Tab under CloudWatch metrics
B. The user can find the data by filtering values of the last 1 week for a 1 hour period in the Relative tab under CloudWatch metrics
C. It is not possible to find the exact time from the console. The user has to use CLI to provide the specific time
D. The user can find the data by giving the exact values in the Absolute tab under CloudWatch metrics
Answer: D
Explanation:
If the user is viewing the data inside the CloudWatch console, the console provides options to filter values either using the relative period, such as days /hours or using the Absolute tab where the user can provide data with a specific date and time. The console also provides the option to search using the local timezone under the time range caption in the console.
Q15. - (Topic 3)
An organization has created 10 IAM users. The organization wants each of the IAM users to have access to a separate DyanmoDB table. All the users are added to the same group and the organization wants to setup a group level policy for this. How can the organization achieve this?
A. Define the group policy and add a condition which allows the access based on the IAM name
B. Create a DynamoDB table with the same name as the IAM user name and define the policy rule which grants access based on the DynamoDB ARN using a variable
C. Create a separate DynamoDB database for each user and configure a policy in the group based on the DB variable
D. It is not possible to have a group level policy which allows different IAM users to different DynamoDB Tables
Answer: D
Explanation:
AWS Identity and Access Management is a web service which allows organizations to manage users and user permissions for various AWS services. AWS DynamoDB has only tables and the organization cannot makeseparate databases. The organization should create a table with the same name as the IAM user name and use the ARN of DynamoDB as part of the group policy. The sample policy is shown below:
{
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": ["dynamodb:*"],
"Resource": "arn:aws:dynamodb:region:account-number-without-hyphens:table/${aws:username}"
}
]
}
Q16. - (Topic 1)
What would happen to an RDS (Relational Database Service) multi-Availability Zone deployment of the primary OB instance fails?
A. The IP of the primary DB instance is switched to the standby OB instance
B. The RDS (Relational Database Service) DB instance reboots
C. A new DB instance is created in the standby availability zone
D. The canonical name record (CNAME) is changed from primary to standby
Answer: D
Q17. - (Topic 3)
A sys admin is planning to subscribe to the RDS event notifications. For which of the below mentioned source categories the subscription cannot be configured?
A. DB security group
B. DB snapshot
C. DB options group
D. DB parameter group
Answer: C
Explanation:
Amazon RDS uses the Amazon Simple Notification Service (SNS. to provide a notification when an Amazon RDS event occurs. These events can be configured for source categories, such as DB instance, DB security group, DB snapshot and DB parameter group.
Q18. - (Topic 3)
A sys admin has enabled a log on ELB. Which of the below mentioned activities are not captured by the log?
A. Response processing time
B. Front end processing time
C. Backend processing time
D. Request processing time
Answer: B
Explanation:
Elastic Load Balancing access logs capture detailed information for all the requests made to the load balancer. Each request will have details, such as client IP, request path, ELB IP, time, and latencies. The time will have information, such as Request Processing time, Backend Processing time and Response Processing time.
Q19. - (Topic 3)
A user has launched an EC2 instance from an instance store backed AMI. If the user restarts the instance, what will happen to the ephermal storage data?
A. All the data will be erased but the ephermal storage will stay connected
B. All data will be erased and the ephermal storage is released
C. It is not possible to restart an instance launched from an instance store backed AMI
D. The data is preserved
Answer: D
Explanation:
A user can reboot an EC2 instance using the AWS console, the Amazon EC2 CLI or the Amazon EC2 API. Rebooting an instance is equivalent to rebooting an operating system. However, it is recommended that the user use Amazon EC2 to reboot the instance instead of running the operating system reboot command from the instance. When an instance launched from an instance store backed AMI is rebooted all the ephermal storage data is still preserved.
Q20. - (Topic 3)
A user has launched an EBS backed instance with EC2-Classic. The user stops and starts the instance. Which of the below mentioned statements is not true with respect to the stop/start action?
A. The instance gets new private and public IP addresses
B. The volume is preserved
C. The Elastic IP remains associated with the instance
D. The instance may run on a anew host computer
Answer: C
Explanation:
A user can always stop/start an EBS backed EC2 instance. When the user stops the instance, it first enters the stopping state, and then the stopped state. AWS does not charge the running cost but charges only for the EBS storage cost. If the instance is running in EC2-Classic, it receives a new private IP address; as the Elastic IP address (EIP. associated with the instance is no longer associated with that instance.