AWS-SysOps Amazon Exam Questions and Free Practice Test

Question 73

- (Topic 3)
In order to optimize performance for a compute cluster that requires low inter-node latency, which feature in the following list should you use?

A. AWS Direct Connect

B. Placement Groups

C. VPC private subnets

D. EC2 Dedicated Instances

E. Multiple Availability Zones

Correct Answer:D

Question 74

- (Topic 1)
A media company produces new video files on-premises every day with a total size of around 100GBS after compression All files have a size of 1 -2 GB and need to be uploaded to Amazon S3 every night in a fixed time window between 3am and 5am Current upload takes almost 3 hours, although less than half of the available bandwidth is used.
What step(s) would ensure that the file uploads are able to complete in the allotted time window?

A. Increase your network bandwidth to provide faster throughput to S3

B. Upload the files in parallel to S3

C. Pack all files into a single archive, upload it to S3, then extract the files in AWS

D. Use AWS Import/Export to transfer the video files

Correct Answer:B
Reference:
http://aws.amazon.com/importexport/faqs/

Question 75

- (Topic 2)
A user has recently started using EC2. The user launched one EC2 instance in the default subnet in EC2-VPC Which of the below mentioned options is not attached or available with the EC2 instance when it is launched?

A. Public IP address

B. Internet gateway

C. Elastic IP

D. Private IP address

Correct Answer:C

A Virtual Private Cloud (VPC. is a virtual network dedicated to a user’s AWS account. A subnet is a range of IP addresses in the VPC. The user can launch the AWS resources into a subnet. There are two supported platforms into which a user can launch instances: EC2-Classic and EC2-VPC (default subnet.. A default VPC has all the benefits of EC2-VPC and the ease of use of EC2-Classic. Each instance that the user launches into a default subnet has a private IP address and a public IP address. These instances can communicate with the internet through an internet gateway. An internet gateway enables the EC2 instances to connect to the internet through the Amazon EC2 network edge.

Question 76

- (Topic 1)
Which services allow the customer to retain full administrative privileges of the underlying EC2 instances?
Choose 2 answers

A. Amazon Elastic Map Reduce

B. Elastic Load Balancing

C. AWS Elastic Beanstalk

D. Amazon Elasticache

E. Amazon Relational Database service

Correct Answer:AC

Question 77

- (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

Correct Answer:D

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.

Question 78

- (Topic 3)
How can you secure data at rest on an EBS volume?

A. Encrypt the volume using the S3 server-side encryption servic

B. Attach the volume to an instance using EC2's SSL interfac

C. Create an IAM policy that restricts read and write access to the volum

D. Write the data randomly instead of sequentiall

E. Use an encrypted file system m top of the EBS volum

Correct Answer:C
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/policies_examples.html

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