Which EC2 Purchasing Option can provide the biggest discount, but is not suitable for critical jobs or databases?
Scheduled Instances
Convertible Instances
Dedicated Hosts
Spot Instances
Answer is Spot Instances
Spot Instances are good for short workloads, but are less reliable.
Scheduled Instances are good when you only need a fraction of a day/week/month.
Convertible Instances are good for long workloads with flexible instances.
Question 152
Which network security tool can you use to control traffic in and out of EC2 Instances?
Network Access Control List (NACL)
Identity and Management Access (IAM)
GuardDuty
Security Groups
Answer is Security Groups
Security Groups operate at instance level and can control traffic.
Identity and Access Management (IAM) enables you to manage access to AWS services and resources securely
Question 153
Under the Shared Responsibility Model, who is responsible for operating-system patches and updates on EC2 Instances?
The customer
AWS
Both AWS and the customer
Answer is The customer
The customer is responsible for operating-system patches and updates on EC2 Instances, as well as data security on the instances, Security Groups rules, etc.
AWS is not responsible for patching EC2 Instances.
Question 154
How long can you reserve an EC2 Reserved Instance?
1 or 3 years
2 or 4 years
6 months or 1 year
Anytime between 1 and 3 years.
Answer is 1 or 3 years
1 year or 3 years terms are available for EC2 Reserved Instances.
You must reserve the instance for either 1 year or 3 years, not any time in between.
Question 155
A company would like to deploy a high-performance computing (HPC) application on EC2. Which EC2 instance type should it choose?
Compute Optimized
Storage Optimized
Memory Optimized
General Purpose
Answer is Compute Optimized
Compute Optimized EC2 instances are great for compute-intensive workloads requiring high performance processors, such as batch processing, media transcoding, high performance web servers, high performance computing, scientific modeling & machine learning, and dedicated gaming servers.
Question 156
Which of the following is NOT an EC2 Instance Purchasing Option?
Spot Instances
Reserved Instances
On-demand Instances
Connect Instances
Answer is Connect Instances
This EC2 Instance purchasing option does not exist.
Question 157
Which EC2 Purchasing Option should you use for an application you plan on running on a server continuously for 1 year?
Reserved Instances
Spot Instances
On-demand Instances
Convertible Instances
Answer is Reserved Instances
Reserved Instances are good for long workloads. You can reserve instances for 1 or 3 years.
Question 158
Which EC2 Storage would you use to create a shared network file system for your EC2 Instances?
EBS Volume
EC2 Instance Store
EBS Snapshots
EFS
Answer is EFS
Amazon EFS is a fully managed service that makes it easy to set up, scale, and cost-optimize file storage in the Amazon Cloud.
An Amazon EBS volume is a durable, block-level storage device that you can attach to one instance at a time.
An EC2 Instance Store provides temporary block-level storage for your instance. It is not a network file system.
EBS Snapshots are backup of your EBS volume at a point in time, not a shared network file system.
Question 159
Which service can be used to automate image management processes?
AMI
EC2 Image Builder
EBS Snapshots
IAM
Answer is EC2 Image Builder
EC2 Image Builder is an automated pipeline for the creation, maintenance, validation, sharing, and deployment of Linux or Windows images for use on AWS and on-premises.
Question 160
Which of the following is a fully managed native Microsoft Windows file system?
EFS
FSx
EBS
Answer is FSx
Amazon FSx makes it easy and cost effective to launch and run popular file systems that are fully managed by AWS. It comes in two offerings: FSx for Windows File Server (used for business applications), and FSx for Lustre (used for high-performance computing).
Amazon EFS is a fully managed service that makes it easy to set up, scale, and cost-optimize file storage in the Amazon Cloud. It is not a Microsoft Windows native.