Andres M Chaparro M
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Andres M Chaparro M
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Question 1 of 25

1

You notice in the AWS Management Console that your Amazon Elastic Compute Cloud
(Amazon EC2) Instance State is Failed. What would cause this?

Select one or more of the following:

  • Loss of network connectivity

  • Loss of System Power

  • Incompatible kernel

  • Software issues on the physical host

Explanation

Question 2 of 25

1

What is the difference between a Public Subnet and a Private Subnet in a VPC?

Select one of the following:

  • The Route Table in the Private Subnet has a route to the Network Address Translation
    (NAT), while the Route Table in a Public Subnet does not.

  • The Route Table in the Public Subnet has a route to the Internet Gateway (IGW), while
    the Route Table in a Private Subnet does not.

  • The Public Subnet has NAT server, while a Private Subnet does not.

  • Only Elastic Load Balancers are allowed in the Public Subnet.

Explanation

Question 3 of 25

1

You have deployed eight Amazon Elastic Compute Cloud (Amazon EC2) instances in
the us-west-1a Availability Zone and two Amazon EC2 instances in us-west-1b Availability
Zone. You noticed that the two Amazon EC2 instances in us-west-1b received
the same amount of traffic that is load balanced between the other eight Amazon EC2
instances located in the us-west-1a Availability Zone. How can you fix this from the
load balancer?

Select one of the following:

  • Enable cross-load balancing on your load balancer.

  • Create an Auto Scaling group, and configure it to balance out the instances between
    the Availability Zones.

  • Create three instances in us-west-1b, and terminate three instances in us-west-1a.

  • Migrate to an Application load balancer.

Explanation

Question 4 of 25

1

You have launched an Amazon Relational Database Service (Amazon RDS) database
instance running MySQL. When you created the Amazon RDS instance, you did not
specify a maintenance window, and now you need to update the instance size from micro to
large. If you request to have the update happen inside the maintenance window, what will
occur?

Select one of the following:

  • Nothing. The command will be ignored until you create and apply a maintenance
    window.

  • Nothing. It is not possible to change the DB size using Amazon RDS.

  • AWS will select and use a default maintenance window if one is not provided.

  • AWS will prompt you to provide a maintenance window when you make the request.

Explanation

Question 5 of 25

1

Which of the following is the customer’s responsibility in the Shared Responsibility Model?

Select one of the following:

  • Restricting access to Amazon Elastic Compute Cloud (Amazon EC2) using Security
    Groups

  • Restricting physical access to AWS datacenters

  • Destroying physical media used in AWS datacenters

  • Managing updates to the Hypervisors on which instances run

Explanation

Question 6 of 25

1

You are tasked with storing 200 GB of archival images that are requested infrequently,
averaging one or two requests per image each day. Which is the most cost effective storage
option for the images?

Select one of the following:

  • Amazon Elastic Block Store (Amazon EBS) io1

  • Amazon EBS gp2

  • Amazon Simple Storage Service (Amazon S3)

  • Amazon Elastic File System (Amazon EFS)

Explanation

Question 7 of 25

1

You need storage for your production MySQL database. The database is 19 TB in size, and
you will need to have approximately 10,000 IOPS—mostly writes. Without considering
price, which storage option satisfies the requirements?

Select one of the following:

  • Provisioned Amazon Elastic File System (Amazon EFS) 20 TB volume with 10,000
    IOPS

  • Two provisioned Amazon EFS 10 TB volumes with 5,000 IOPS per volume and
    RAID0 striping

  • Provisioned Amazon Elastic Block Store (Amazon EBS) (io1) 20 TB volume with
    10,000 IOPS

  • Two Provisioned Amazon EBS (io1) 10 TB volumes with 5,000 IOPS per volume and
    RAID0 striping

Explanation

Question 8 of 25

1

What is the purpose of Amazon Elastic Compute Cloud (Amazon EC2) user data?

Select one of the following:

  • To install software on the Amazon EC2 instance at boot

  • To list any public keys associated with the instance

  • To show a Public IP address to an Amazon EC2 instance

  • To show the localhost name for the instance

Explanation

Question 9 of 25

1

You have created an Amazon Virtual Private Cloud (Amazon VPC) with the CIDR of
10.0.0.0/16. You now need to divide that VPC into a Public Subnet and a Private Subnet.
Which one below is a valid combination?

Select one of the following:

  • Public 10.1.0.0/24
    Private 10.2.0.0/24

  • Public 10.0.0.1/24
    Private 10.0.0.2/24

  • Public 10.0.1.0/24
    Private 10.0.2.0/24

  • Public 10.0.1.0/16
    Private 10.0.2.0/16

Explanation

Question 10 of 25

1

You have created an Auto Scaling group with a minimum of two Amazon Elastic Compute
Cloud (Amazon EC2) instances, a maximum of six instances, and a desired capacity of four
instances. Your instances take 20 minutes to launch, and they take three minutes to start
once built. How can you configure autoscaling to start and stop instances versus launching
new instances from Amazon Machine Instances (AMIs)?

Select one of the following:

  • Create a new Auto Scaling launch configuration, and configure the Auto Scaling group
    to start the instances.

  • Edit the Auto Scaling group’s launch configuration to start instances.

  • This is not possible, as Auto Scaling cannot stop and start instances.

  • Configure the Auto Scaling group to use the Amazon EC2 recovery service.

Explanation

Question 11 of 25

1

You have a Multi-AZ Amazon Relational Database Service (Amazon RDS) database running
MySQL. During a planned outage, how does AWS ensure that, when switching from
the primary DB to the standby, it will not affect your application servers?

Select one of the following:

  • Amazon RDS uses Elastic IP addresses that are detached from the primary database
    and then attached to the standby instance. This promotes the standby to be the
    primary.

  • Amazon RDS uses the Elastic Queue Service to process requests from application
    servers and send them to database engines. Since this is done at the Hypervisor, no user
    intervention is required.

  • Amazon RDS runs both database instances independently, and each has their own connection
    string. You will have to update the code on your application servers because
    AWS has no visibility above the Hypervisor.

  • Amazon RDS uses Amazon Route 53 to create connection strings and will automatically
    update the IP address to point at the standby instance.

Explanation

Question 12 of 25

1

When attaching an Amazon Elastic Block Store (Amazon EBS) volume to an Amazon
Elastic Compute Cloud (Amazon EC2) instance, what conditions must be true?

Select one of the following:

  • The Amazon EBS volume must be in the same Availability Zone (AZ) as the instance.

  • The Amazon EBS volume must be in the same account as the instance.

  • The Amazon EBS volume must be assigned to an AMI ID.

  • The Amazon EBS volume must have the same security group as the instance.

Explanation

Question 13 of 25

1

You’ve been asked to migrate a busy Amazon Relational Database Service (Amazon RDS)
for MySQL database to Amazon Aurora. You need to do so with little downtime and with
no lost data. What is the best way to meet the above requirements?

Select one of the following:

  • Take a snapshot of the MySQL Amazon RDS instance. Use that snapshot to create an
    Amazon Aurora Read Replica of the Amazon RDS for MySQL database. Once replication
    catches up, make the Aurora Read Replica into a standalone Amazon Aurora DB
    cluster, and point the application to the new Amazon Aurora DB cluster.

  • Create an Amazon Simple Storage Service (Amazon S3) bucket, and upload the Amazon
    RDS database as a flat file dump into the bucket. Restore from the dump to a new
    Amazon Aurora database.

  • Restore the most recent Amazon RDS automated backup to a new Amazon Aurora
    instance. Stop the application, point the application at the new Amazon Aurora DB
    instance, and start the application.

  • Take a snapshot. Restore the snapshot to a new Amazon Aurora instance. Point the
    application to the new Amazon Aurora DB instance, and start the application.

Explanation

Question 14 of 25

1

In case of a failure of the primary node of an Amazon Relational Database Service
(Amazon RDS) instance with an RDS Multi-AZ deployment, you must do the following to
recover:

Select one of the following:

  • Nothing. The node will automatically fail over to each of the three included read
    replicas in alternative regions.

  • Nothing. The node will automatically fail over to the standby instance; a short amount
    of downtime may occur.

  • Manually stand up a new instance by restoring from the most recent automatic
    backup.

  • Manually initiate the failover using the AWS CLI initialize-rds-failover command.

Explanation

Question 15 of 25

1

As part of an application requirement that you’ve been given, you must deploy a new
Amazon DynamoDB database. You must do so in a highly available manner. How do you
deploy this database?

Select one of the following:

  • Deploy the Amazon DynamoDB database in a single Availability Zone (AZ). Set up
    an automatic backup job to Amazon S3 and an automatic restore job from S3 to a
    DynamoDB database in a second AZ.

  • Use the Amazon DynamoDB Local version in two AZs.

  • You can’t use Amazon DynamoDB for HA requirements.

  • Deploy an Amazon DynamoDB database in the desired region.

Explanation

Question 16 of 25

1

Your application has a database that has been reported as being slow by your end users.
Upon investigation, you find that the database is seeing an extraordinarily high volume of
read activity. What is one way to overcome this constraint?

Select one of the following:

  • Place an Amazon CloudFront distribution between the application layer and the
    database.

  • Use AWS Shield to protect against too many reads from the application layer to the
    database.

  • Use Amazon ElastiCache to provide a cache for frequent reads between the application
    layer and database.

  • Use AWS Route53 Latency Based Routing to direct traffic to the least latent database
    node.

Explanation

Question 17 of 25

1

You have assigned an Elastic IP to an Amazon Elastic Compute Cloud (Amazon EC2)
instance. You then terminate that instance. What happens to that Elastic IP?

Select one of the following:

  • The Elastic IP remains associated with the account, and you start getting charged
    for it.

  • The Elastic IP remains associated with the account.

  • The Elastic IP is deleted along with the Amazon EC2 instance.

  • You cannot delete an Amazon EC2 instance with an Elastic IP associated with it. You
    must remove or delete the Elastic IP first.

Explanation

Question 18 of 25

1

You are using Amazon CloudFront to serve static content to your users. What would be the
best way to control access to the content?

Select one of the following:

  • Create an Amazon Simple Service (Amazon S3) bucket policy using AWS Identity and
    Management (IAM) as the mechanism to control access.

  • Have your application create and distribute either signed URLs or signed cookies.

  • Use the LIST Distribution API within Amazon CloudFront.

  • Use Origin Access Identity (OAI) to secure access to content in Amazon CloudFront.

Explanation

Question 19 of 25

1

You are looking to encrypt your Amazon DynamoDB table. How would you do this?

Select one of the following:

  • In the Amazon DynamoDB console, turn on server-side encryption.

  • Via the AWS CLI, turn on server-side encryption.

  • Use client-side encryption, as Amazon DynamoDB does not support server-side
    encryption.

  • Enable Transparent Data Encryption (TDE).

Explanation

Question 20 of 25

1

You are part of a team which is rebuilding your company’s monolithic web application.
The team plans on using a tiered architecture. One of the primary goals is to be able to use
Auto Scaling to add and remove Amazon Elastic Compute Cloud (Amazon EC2) instances
on demand. To this end, you need to get user state data off of individual instances. Which
of the following AWS cloud services will provide you with a shared data store that is highly
durable and has low latency?

Select one of the following:

  • Amazon DynamoDB

  • Amazon EC2 Instance Storage

  • Amazon Relational Database Service (Amazon RDS)

  • Amazon Simple Storage Service (Amazon S3)

Explanation

Question 21 of 25

1

Your company maintains an application that has a home-grown messaging cluster. You
want to avoid maintaining this legacy cluster, and you need to migrate to an AWS service
that provides this functionality. What service do you set up?

Select one of the following:

  • AWS X-Ray

  • Amazon CloudFront

  • Amazon Elasticsearch

  • Amazon Simple Queue Service (Amazon SQS)

Explanation

Question 22 of 25

1

You need to create an Amazon Virtual Private Cloud (Amazon VPC) that will allow you to
use AWS Direct Connect. Which of the following combinations will allow you to use AWS
Direct Connect but also prevent connectivity to the Internet?

Select one of the following:

  • You are not able to do so. If you have an AWS Direct Connect connection, by default,
    you have a connection to the Internet.

  • Create a VPC with both an Internet Gateway (IGW) and a VPN Gateway.

  • Create a VPC with an AWS Direct Connect Gateway.

  • Create a VPC with a VPN Gateway.

Explanation

Question 23 of 25

1

You have 10 Amazon Elastic Compute Cloud (Amazon EC2) instances behind a classic load
balancer. What do you need to do to ensure that traffic is routed only to healthy instances?

Select one of the following:

  • Terminate the unhealthy instances.

  • Enable cross-zone load balancing on your load balancer.

  • Turn on health checks, and the load balancer will send traffic to the healthy instances.

  • Nothing. The load balancer will terminate the unhealthy instances.

Explanation

Question 24 of 25

1

You have noticed that your Auto Scaling group has scaled up to its maximum size. How
can you be notified when your Auto Scaling group scales out and scales in?

Select one of the following:

  • Have your Auto Scaling group send messages to Amazon Simple Queue Service
    (Amazon SQS). Periodically check the queue for your Auto Scaling messages.

  • Configure an Amazon Simple Notification Service (Amazon SNS) topic with an SMS
    subscription to your phone number.

  • Configure an Amazon Simple Notification Service (Amazon SNS) topic with an AWS
    Lambda function that sends an email.

  • Periodically query the Auto Scaling group to check the desired capacity.

Explanation

Question 25 of 25

1

You are given a project to implement a High Performance Computing (HPC) workload for
your R&D department. The workload takes tasks one-by-one, and it is tolerant of a node in
the cluster failing. Each task runs for approximately one hour. Which of the following AWS
cloud services is best suited for your workload from a cost-effectiveness standpoint?

Select one of the following:

  • Amazon Elastic Compute Cloud (Amazon EC2) Spot

  • Amazon EC2 on-demand instances

  • Amazon Elastic Compute Cloud (Amazon EC2) reserved instances

  • AWS Lambda

Explanation

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