[2021-New] Amazon AWS-SysOps Dumps With Update Exam Questions (71-80)

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Q1. - (Topic 2)

A user has launched an EBS backed EC2 instance. The user has rebooted the instance. Which of the below mentioned statements is not true with respect to the reboot action?

A. The private and public address remains the same

B. The Elastic IP remains associated with the instance

C. The volume is preserved

D. The instance runs on a new host computer

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 the Amazon EC2 to reboot the instance instead of running the operating system reboot command from the instance. The instance remains on the same host computer and maintains its public DNS name, private IP address, and any data on its instance store volumes. It typically takes a few minutes for the reboot to complete, but the time it takes to reboot depends on the instance configuration.

Q2. - (Topic 3)

An organization has created a Queue named “modularqueue” with SQS. The organization is not performing any operations such as SendMessage, ReceiveMessage, DeleteMessage, GetQueueAttributes, SetQueueAttributes, AddPermission, and RemovePermission on the queue. What can happen in this scenario?

A. AWS SQS sends notification after 15 days for inactivity on queue

B. AWS SQS can delete queue after 30 days without notification

C. AWS SQS marks queue inactive after 30 days

D. AWS SQS notifies the user after 2 weeks and deletes the queue after 3 weeks.

Answer: B

Explanation:

Amazon SQS can delete a queue without notification if one of the following actions hasn't been performed on it for 30 consecutive days: SendMessage, ReceiveMessage, DeleteMessage, GetQueueAttributes, SetQueueAttributes, AddPermission, and RemovePermission.

Q3. - (Topic 1)

How can the domain's zone apex for example "myzoneapexdomain com" be pointed towards an Elastic Load Balancer?

A. By using an AAAA record

B. By using an A record

C. By using an Amazon Route 53 CNAME record

D. By using an Amazon Route 53 Alias record

Answer: D

Explanation: Reference:

http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.html

Q4. - (Topic 3)

An organization has configured Auto Scaling with ELB. There is a memory issue in the application which is causing CPU utilization to go above 90%. The higher CPU usage triggers an event for Auto Scaling as per the scaling policy. If the user wants to find the root cause inside the application without triggering a scaling activity, how can he achieve this?

A. Stop the scaling process until research is completed

B. It is not possible to find the root cause from that instance without triggering scaling

C. Delete Auto Scaling until research is completed

D. Suspend the scaling process until research is completed

Answer: D

Explanation:

Auto Scaling allows the user to suspend and then resume one or more of the Auto Scaling processes in the Auto Scaling group. This is very useful when the user wants to investigate a configuration problem or some other issue, such as a memory leak with the web application and then make changes to the application, without triggering the Auto Scaling process.

Q5. - (Topic 3)

A user is trying to create a PIOPS EBS volume with 8 GB size and 200 IOPS. Will AWS create the volume?

A. Yes, since the ratio between EBS and IOPS is less than 30

B. No, since the PIOPS and EBS size ratio is less than 30

C. No, the EBS size is less than 10 GB

D. Yes, since PIOPS is higher than 100

Answer: C

Explanation:

A provisioned IOPS EBS volume can range in size from 10 GB to 1 TB and the user can provision up to 4000 IOPS per volume. The ratio of IOPS provisioned to the volume size requested should be a maximum of 30; for example, a volume with 3000 IOPS must be at least 100 GB.

Q6. - (Topic 3)

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

Answer: D

Explanation:

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 EBSoptimized provides the user with a dedicated connection between the EC2 instance and the EBS volume.

Q7. - (Topic 2)

A user is trying to configure the CloudWatch billing alarm. Which of the below mentioned steps should be

performed by the user for the first time alarm creation in the AWS Account Management section?

A. Enable Receiving Billing Reports

B. Enable Receiving Billing Alerts

C. Enable AWS billing utility

D. Enable CloudWatch Billing Threshold

Answer: B

Explanation:

AWS CloudWatch supports enabling the billing alarm on the total AWS charges. Before the user can create an alarm on the estimated charges, he must enable monitoring of the estimated AWS charges, by selecting the option “Enable receiving billing alerts”. It takes about 15 minutes before the user can view the billing data. The user can then create the alarms.

Q8. - (Topic 3)

A user has setup an Auto Scaling group. The group has failed to launch a single instance for more than 24 hours. What will happen to Auto Scaling in this condition?

A. Auto Scaling will keep trying to launch the instance for 72 hours

B. Auto Scaling will suspend the scaling process

C. Auto Scaling will start an instance in a separate region

D. The Auto Scaling group will be terminated automatically

Answer: B

Explanation:

If Auto Scaling is trying to launch an instance and if the launching of the instance fails continuously, it will suspend the processes for the Auto Scaling groups since it repeatedly failed to launch an instance. This is known as an administrative suspension. It commonly applies to the Auto Scaling group that has no running instances which is trying to launch instances for more than 24 hours, and has not succeeded in that to do so.

Q9. - (Topic 3)

A user has created a VPC with CIDR 20.0.0.0/16 using the wizard. The user has created public and VPN only subnets along with hardware VPN access to connect to the user’s data centre. The user has not yet launched any instance as well as modified or deleted any setup. He wants to delete this VPC from the console. Will the console allow the user to delete the VPC?

A. Yes, the console will delete all the setups and also delete the virtual private gateway B. No, the console will ask the user to manually detach the virtual private gateway first and then allow deleting the VPC

C. Yes, the console will delete all the setups and detach the virtual private gateway

D. No, since the NAT instance is running

Answer: C

Explanation:

The user can create subnets as per the requirement within a VPC. If the user wants to connect VPC from his own data centre, he can setup a public and VPN only subnet which uses hardware VPN access to connect with his data centre. When the user has configured this setup with Wizard, it will create a virtual private gateway to route all traffic of the VPN subnet. If the virtual private gateway is attached with VPC and the user deletes the VPC from the console it will first detach the gateway automatically and only then delete the VPC.

Q10. - (Topic 1)

You are tasked with setting up a cluster of EC2 Instances for a NoSQL database. The database requires random read IO disk performance up to a 100,000 IOPS at 4KB block side per node.

Which of the following EC2 instances will perform the best for this workload?

A. A High-Memory Quadruple Extra Large (m2.4xlarge) with EBS-Optimized set to true and a PIOPs EBS volume

B. A Cluster Compute Eight Extra Large (cc2.8xlarge) using instance storage

C. High I/O Quadruple Extra Large (hi1.4xlarge) using instance storage

D. A Cluster GPU Quadruple Extra Large (cg1.4xlarge) using four separate 4000 PIOPS EBS volumes in a RAID 0 configuration

Answer: C

Explanation: Explanation: Reference:

http://aws.amazon.com/ec2/instance-types/