Module 4: Adding a Compute Layer

Question 1

Which attributes are reasons to choose Amazon Elastic Compute Cloud (Amazon EC2) (Select TWO.)

• Ability to run any type of workload.
• Ability to run serverless applications.
• Amazon Web Services (AWS) management of operating system patches.
• AWS management of operating system security.
• Complete control of computing resources

Question 2

What are the benefits of using an Amazon Machine Image (AMI)? (CHOOSE 3)

• Automating security group settings for instances.
• Using an AMI as a server backup for Amazon Elastic Compute Cloud (Amazon EC2) instances.
• Launching instances with the same configuration.
• Migrating data from on-premises to Amazon EC2 instances.
• Selling or sharing software solutions packaged as AMI.

Answer 2

• Using an AMI as a server backup for Amazon Elastic Compute Cloud (Amazon EC2) instances.
• Launching instances with the same configuration.
• Selling or sharing software solutions packaged as AMI.

Question 3

A system administrator must change the instance types of multiple running Amazon Elastic Compute Cloud (Amazon EC2) instances. The instances were launched with a mix of Amazon Elastic Block Store (Amazon EBS)-backed Amazon Machine Images (AMIs) and instance store-backed AMIs. Which method is a valid way to change the instance type?

• Change the instance type of an Amazon EBS-backed instance without stopping it.
• Change the instance type of an instance store-backed instance without stopping it.
• Stop an Amazon EBS-backed instance, change its instance type, and start the instance.
• Stop an instance store-backed instance, change its instance type, and start the instance.

Answer 3

• Stop an Amazon EBS-backed instance, change its instance type, and start the instance.

Question 4

A workload requires high read/write access to large local datasets. Which instance types would perform best for this workload? (Select TWO.)

• General purpose
• Compute optimized
• Memory optimized
• Accelerated computing
• Storage optimized

Answer 4

• Memory optimized
• Storage optimized

( This workload is memory-intensive or storage-intensive, or both. Compute optimized and accelerated computing instances are better for CPU-intensive workloads. General purpose instances provide a balance of compute, memory, and networking resources.)

Question 5

An application requires the media access control (MAC) address of the host Amazon Elastic Compute Cloud (Amazon EC2) instance. The architecture uses an AWS Auto Scaling group to dynamically launch and terminate instances. Which way is best for the application to obtain the MAC address?

• Write the MAC address in the application configuration file of each instance.
• Include the MAC address in the Amazon Machine Image (AMI) that is used to launch all of the instance sin the AWS Auto Scaling group.
• Include the MAC address in a custom AMI for each instance in the AWS Auto Scaling group.
• Use the user data of each instance to access the MAC address through the instance media

Answer 5

• Use the user data of each instance to access the MAC address through the instance media

Question 6

A transactional workload on an Amazon EC2 instance performs high amounts of frequent read and write operations. Which Amazon EBS volume type is best for this workload?

• General purpose Solid State Drive (SSD)
• Cold hard disk drive (HDD)
• Provisioned IOPS SSD EBS
• Throughput optimized hard disk drive (HDD)

Answer 6

Provisioned IOPS

Question 7

It is possible to create an NFS share on an Amazon EBS-backed Linux instance by installing and configuring an NFS server on the instance. In this way, multiple Linux systems can share the file system of that instance. Which advantages does Amazon Elastic File System (Amazon EFS) provide, compared to this solution? (Select TWO.)

• Strong consistency
• Automatic scaling
• High availability
• File locking
• No need for backups

Answer 7

• Automatic scaling
• High availability

( As a fully managed service, Amazon EFS provides high availability. An NFS server on an instance is a single point of failure, which can become overloaded. Amazon EFS also scales automatically, and you pay for only what you use. EBS does not scale automatically.)

Question 8

Which feature does Amazon FSx for Windows File Server provide?

• Fully managed Windows file servers
• Microsoft Active Directory server for Windows file servers
• Backup solution for on-premises Windows files servers
• Amazon management agent for Windows file serve

Answer 8

• Fully managed Windows file servers

Question 9

Which descriptions of Amazon Elastic Compute (Amazon EC2) pricing options are correct? (Select TWO.)

• On-Demand Instances enable you to pay for compute capacity by usage time, with no long-term commitments.
• Reserved Instances are physical servers that are reserved exclusively for your use.
• Savings Plans are budgeting tools that help you manage Amazon EC2 costs.
• Dedicated Hosts are servers that are dedicated to one purpose, such as a firewall.
• Spot Instances offer spare compute capacity at discounted prices, and can be interrupted.

Answer 9

• On-Demand Instances enable you to pay for compute capacity by usage time, with no long-term commitments.
• Spot Instances offer spare compute capacity at discounted prices, and can be interrupted.

Question 10

A company has three high-performance computing instances that must communicate with each other. The company would like to achieve maximum network performance between the instances. The most important requirement is that these systems do not share the same rack. Which placement strategy should they use?

• Partition
• Spread
• Default
• Cluster

Answer 10

• Spread