AWS EC2

You need to attach an EBS volume to an EC2 instance. Which EC2 API call should you use?

What statement best describes n-tier architecture?

Applications can typically be broken down in to three logical functions, which of the below is NOT a logical function?

In a 2-tier archictecture what does the web-tier commonly represent in terms of the applications three logical components?

Which of the following is not a tier in a 3-tier architecture model?

Which of the following is NOT an advantage of using a 3-tier architecture?

EBS snapshots are stored on S3 in what manner?

Do Amazon EBS volumes persist independently from the life of an Amazon EC2 instance by default, for example, if I terminated an EC2 instance, would that EBS volume remain?

Can I delete a snapshot of an EBS volume that is used as the root device of a registered AMI

Can a placement group be deployed across multiple Availability Zones?

Can you attach an EBS volume to more than one EC2 instance at the same time?

Can a new role be added to a live, fully functioning EC2 instance?

Can you change the permissions to a role, even if that role is already assinged to an existing EC2 instance

What is a valid virtualization type available for EC2?

What is a valid virtualization type available for EC2?

You have a high performance compute application and you need to minimize network latency between EC2 instances as much as possible. What can you do to achieve this?

You are creating your own relational database on an EC2 instance and you need to maximize IOPS performance. What can you do to achieve this goal?

Which of the following is not a valid pricing model for EC2?

If an Amazon EBS volume is an additional partition (ie not the root volume), can you detach it without stopping the instance?

You are creating a fleet of EC2 instances to run some CPU intensive calculations to extract very valuable data. The calculations will take some time and you need to choose an appropriate method of storage in wich to place this data once it is calculated. What storage medium should you attach to your EC2 fleets?

You are designing a new web application for your end customer and you have decided to use EC2 for the web and application layer. You need to choose a database layer and have the choice between RDS, DynamoDB, using EC2 with a custom database on it or using Microsoft Azure. You will need to be able to customize the database installation for things like collation, languages etc. What option will give you the best latency and greatest controls?

You are a systems administrator and you need to monitor the health of your production environment. You decide to do this using Cloud Watch, however you notice that you cannot see the health of every important metric in the default dashboard. Which of the following metrics do you need to design a custom Cloud Watch metric for, when monitoring the health of your EC2 instances?

You are working in the media industry and you have created a web application where users will be able to upload photos they create to your website. This web application must be able to call the S3 API in order to be able to function. Where should you store your API credentials whist maintaining the maximum level of security.

You work for a toy company that has a busy online store. As you are approaching the holidays you find that your store is getting more and more traffic. You ensure that the web tier of your store is behind an Auto Scaling group, however you notice that the web tier is frequently scaling, sometimes multiple times in an hour, only to scale back after peak usage. You need to prevent this so that Auto Scaling does not scale as rapidely, just to scale back again. What option would help you achieve this?

You are a security architect working for a large antivirus company. The production environment has recently been moved to AWS and is in a public subnet. You are able to view the production environment over HTTP however when your customers try to update their virus definition files over a custom port, that port is blocked. You log in to the console and you allow traffic in over the custom port. How long will this take to take effect?

You run an automobile reselling company that has a popular online store on AWS. The application sits behind an Auto Scaling group and requires new instances of the Auto Scaling group to identify their public and private IP addresses. How can you achieve this?

As a solutions architect, you have been tasked with building a new web application. The web application needs to be stateless. Which three services could you use to achieve this?

You company has decided to set up a new AWS account for test and dev purposes. They already use ASW for production, but would like a new account dedicated for test and dev so as to not accidentally break the production environment. You launch an exact replica of your production environment using a CloudFormation template that your company uses in production. However, CloudFormation fails. You use the exact CloudFormation template in production so the failure is something to do with your new AWS account. The CloudFormation template is trying to launch 60 new EC2 instances in a single availability zone. After some research you discover that the problem is:

You work for a famous bakery who are deploying a hybrid cloud approach. Their legacy IBC AS400 servers will remain on premise within their own datacenter however they will need to be able to communicate to the AWS environment over a site to site VPN connection. What do you need to do to establish a VPN connection?

EBS snapshots are stored on S3 in what manner?

While creating the snapshots using the command line tools, which command should I be using?

A placement group is ideal for

Using the console, I can add a role to an EC2 instance, after that instance has been created and powered up

I can change the permissions to a role, even if that role is already assigned to an existing EC2 instance, and these changes will take effect immediately

If I want to run a database on an EC2 instance, which is the most recommended Amazon storage option?

Can I move a reserved instance from one region to another?

Reserved instances are available for multi-AZ deployments

To help you manage your Amazon EC2 instances you can assign your own metadata in the form of

Individual instances are provisioned in?

What is the underlying Hypervisor for EC2?

When deploying databases on your own EC2 instances, it is recommended that you deploy these on magnetic storage rather than SSD storage as you get better performance.

Placement Groups can be created across 2 or more Availability Zones

You can add multiple volumes to an EC2 instance and then create your own RAID 5/RAID 10/RAID 0 configurations using those volumes

It is possible to transfer a reserved instance from one avaiability zone to another

You have an EC2 instance which needs to find out both its private IP address and its public IP address. To do this you need to:

To retrieve instance metadata or userdata you will need to use the following IP address:

In order to enable encryption at rest using EC2 and Elastic Block Store you need to