AWS - SysOps

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AWS-SysOps Real exam Questions with correct Answers.

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Question 1

If I modify a DB Instance or the DB parameter group associated with the instance, should I reboot the instance for the changes to take effect?

A. YesB. No

Answer A

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Question 2

A user runs the command "dd if=/dev/xvdf of=/dev/null bs=1M" on an EBS volume created from a snapshot and attached to a Linux instance. Which of the below mentioned activities is the user performing with the step given above?

A. Pre warming the EBS volumeB. Copying the data from a snapshot to the deviceC. Formatting the volumeD. Initiating the device to mount on the EBS volume

Answer A

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Question 3

What action is required to establish an Amazon Virtual Private Cloud (VPC) VPN connection between an on-premises datacentre and an Amazon VPC virtual private gateway?

A. Modify the main route table to allow traffic to a network address translation instanceB. Use a dedicated network address translation instance in the public subnetC. Assign a static Internet-routable IP address to an Amazon VPC customer gatewayD. Establish a dedicated networking connection using AWS Direct Connect

Answer B

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Question 4

Which of the below mentioned options is recommended by AWS with respect to the selection of the availability zone?

A. Always select the AZ while launching an instanceB. Do not select the AZ; instead let AWS select the AZC. Always select the US-East-1-a zone for HAD. The user can never select the availability zone while launching an instance

Answer B

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Question 5

You have created 4 weighted resource record sets with weights 1, 2, 3 and 4. The probability of 3rd record set being selected by Route53.

A. 3/10th of the timeB. 1/4th of the timeC. 3/7th of the timeD. 1/7th of the time

Answer A

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Question 6

Instance A and instance B are running in two different subnets A and B of a VPC. Instance A is not able to ping instance B.What are two possible reasons for this?

A. The routing table of subnet A has no target route to subnet BB. The NACL on subnet B does not allow outbound ICMP trafficC. The security group attached to instance B does not allow inbound ICMP trafficD. The policy linked to the IAM role on instance A is not configured correctly

Answer D

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Question 7

If you want to launch Amazon Elastic Compute Cloud (EC2) Instances and assign each Instance apredetermined private IP address you should:

A. Launch the instances in a Placement GroupB. Assign a group or sequential Elastic IP address to the instancesC. Use standard EC2 instances since each instance gets a private Domain Name Service (DNS) alreadyD. Launch the Instance from a private Amazon Machine image (Mil)E. Launch the instances in the Amazon virtual Private Cloud (VPC).

Answer B

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Question 8

You have been tasked with identifying an appropriate storage solution for a NoSQL database that requires random I/O reads of greater than 100,000 4kB IOPS.Which EC2 option will meet this requirement?

A. SSD instance storeB. EBS provisioned IOPSC. High Storage instance configured in RAID 10D. EBS optimized instances

Answer C

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Question 9

Per the AWS Acceptable Use Policy, penetration testing of EC2 instances:

A. may be performed by AWS, and will be performed by AWS upon customer request.B. are expressly prohibited under all circumstances.C. may be performed by the customer against their own instances with prior authorization from AWS.D. may be performed by the customer against their own instances, only if performed from EC2 instances.E. may be performed by AWS, and is periodically performed by AWS.

Answer A

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Question 10

How would you mitigate these performance issues in the test environment?

A. Configure Amazon Cloudwatch to provision more network bandwidth when network utilization exceeds 80%B. Add an additional ENI to the test instanceC. Use the EBS optimized option to offload EBS trafficD. Upgrade the m1.small to a larger instance type

Answer B

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