QUESTION: 1
A user is running a MySQL RDS instance. The user wil not use the DB for the next 3 months.
How can the user save costs?

A. Pause the RDS activities from CLI until it is required in the future
B. Stop the RDS instance
C. Create a snapshot of RDS to launch in the future and terminate the instance now
D. Change the instance size to micro

Answer(s): C
Explanation:
The RDS instances unlike the AWS EBS backed instances cannot be stopped or paused. The
user needs to take the final snapshot, terminate the instance and launch a new instance in the
future from that snapshot.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoring
AmazonR DSInstances.html

QUESTION: 2
In DynamoDB, if you create a table and request 10 units of write capacity and 200 units of read
capacity of provisioned throughput, how much would you be charged in US East (Northern
Virginia) Region?

A. $0.05 per hour
B. $0.10 per hour
C. $0.03 per hour
D. $0.15 per hour

Answer(s): A
Explanation:
To understand pricing in DynamoDB, consider the following example. If you create a table and
request 10 units of write capacity and 200 units of read capacity of provisioned throughput, you
would be charged:
$0.01 + (4 x $0.01) = $0.05 per hour
Reference:
http://aws.amazon.com/dynamodb/pricing/

QUESTION: 3
You have been doing a lot of testing of your VPC Network by deliberately failing EC2 instances
to test whether instances are failing over properly. Your customer who wil be paying the AWS
bil for all this asks you if he being charged for all these instances. You try to explain to him how
the bil ing works on EC2 instances to the best of your knowledge. What would be an appropriate
response to give to the customer in regards to this?

A. Bil ing commences when Amazon EC2 AMI instance is completely up and bil ing ends as
soon as the instance starts to shutdown.
B. Bil ing commences when Amazon EC2 initiates the boot sequence of an AMI instance and
bil ing ends when the instance shuts down.
C. Bil ing only commences only after 1 hour of uptime and bil ing ends when the instance terminates.
D. Bil ing commences when Amazon EC2 initiates the boot sequence of an AMI instance and
bil ing ends as soon as the instance starts to shutdown.

Answer(s): B
Explanation:
Bil ing commences when Amazon EC2 initiates the boot sequence of an AMI instance. Bil ing
ends when the instance shuts down, which could occur through a web services command, by
running "shutdown -h", or through instance failure.
Reference:
http://aws.amazon.com/ec2/faqs/#Bil ing

QUESTION: 4
AWS Elastic Load Balancer supports SSL termination.

A. True. For specific availability zones only.
B. False
C. True. For specific regions only
D. True. For all regions

Answer(s): D
Explanation:
You can configure your load balancer in ELB (Elastic Load Balancing) to use a SSL certificate in
order to improve your system security.The load balancer uses the certificate to terminate and
then decrypt requests before sending them to the back-end instances. Elastic Load Balancing
uses AWS Identity and Access Management (IAM) to upload your certificate to your load
balancer.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/US_SettingUpLoadB
alancerH TTPS.html

QUESTION: 5
A user has launched five instances with ELB. How can the user add the sixth EC2 instance to
ELB?

A. The user can add the sixth instance on the fly.
B. The user must stop the ELB and add the sixth instance.
C. The user can add the instance and change the ELB config file.
D. The ELB can only have a maximum of five instances.

Answer(s): A
Explanation:
Elastic Load Balancing automatically distributes incoming traffic across multiple EC2 instances.
You create a load balancer and register instances with the load balancer in one or more
Availability Zones. The load balancer serves as a single point of contact for clients. This enables
you to increase the availability of your application. You can add and remove EC2 instances from
your load balancer as your needs change, without disrupting the overall flow of information.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/SvcIntro.html

QUESTION: 6
An organization has 500 employees. The organization wants to set up AWS access for each
department. Which of the below mentioned options is a possible solution?

A. Create IAM roles based on the permission and assign users to each role
B. Create IAM users and provide individual permission to each
C. Create IAM groups based on the permission and assign IAM users to the groups
D. It is not possible to manage more than 100 IAM users with AWS

Answer(s): C
Explanation:
An IAM group is a collection of IAM users. Groups let the user specify permissions for a
collection of users, which can make it easier to manage the permissions for those users.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_WorkingWithGroupsAndUsers.html

QUESTION: 7
How long can you keep your Amazon SQS messages in Amazon SQS queues?

A. From 120 secs up to 4 weeks
B. From 10 secs up to 7 days
C. From 60 secs up to 2 weeks
D. From 30 secs up to 1 week

Answer(s): C
Explanation:
The SQS message retention period is configurable and can be set anywhere from 1 minute to 2
weeks. The default is 4 days and once the message retention limit is reached your messages
wil be automatically deleted. The option for longer message retention provides greater flexibility
to allow for longer intervals between message production and consumption.
Reference:
https://aws.amazon.com/sqs/faqs/

QUESTION: 8
In regard to DynamoDB, which of the following statements is correct?

A. An Item should have at least two value sets, a primary key and another attribute.
B. An Item can have more than one attributes.
C. A primary key should be single-valued.
D. An attribute can have one or several other attributes.

Answer(s): B
Explanation:
In Amazon DynamoDB, a database is a collection of tables. A table is a collection of items and
each item is a collection of attributes.
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html

QUESTION: 9
Which one of the following statements is NOT an advantage of DyanamoDB being built on Solid
State Drives:

A. serve high-scale request workloads
B. low request pricing
C. high I/O performance of WebApp on EC2 instance
D. low-latency response times

Answer(s): C
Explanation:
In DynamoDB, SSDs help achieve design goals of predictable low-latency response times for
storing and accessing data at any scale. The high I/O performance of SSDs also enables to
serve high-scale request workloads cost efficiently, and to pass this efficiency along in low
request pricing.
Reference:
http://aws.amazon.com/dynamodb/faqs/

QUESTION: 10
An organization has hosted an application on the EC2 instances. There will be multiple users
connecting to the instance for setup and configuration of application. The organization is
planning to implement certain security best practices. Which of the below mentioned pointers
wil not help the organization achieve better security arrangement?

A. Apply the latest patch of OS and always keep it updated.
B. Al ow only IAM users to connect with the EC2 instances with their own secret access key.
C. Disable the password based login for all the users. Al the users should use their own keys to
connect with the instance securely.
D. Create a procedure to revoke the access rights of the individual user when they are not
required to connect to EC2 instance anymore for the purpose of application configuration.

Answer(s): B
Explanation:
Since AWS is a public cloud any application hosted on EC2 is prone to hacker attacks. It
becomes extremely important for a user to setup a proper security mechanism on the EC2
instances. A few of the security measures are listed below:
Always keep the OS updated with the latest patch
Always create separate users with in OS if they need to connect with the EC2 instances, create
their keys and disable their password
Create a procedure using which the admin can revoke the access of the user when the
business work on the EC2 instance is completed
Lock down unnecessary ports
Audit any proprietary applications that the user may be running on the EC2 instance Provide
temporary escalated privileges, such as sudo for users who need to perform occasional
privileged tasks
The IAM is useful when users are required to work with AWS resources and actions, such as
launching an instance. It is not useful to connect (RDP / SSH) with an instance.
Reference: http://aws.amazon.com/articles/1233/

QUESTION: 11
A user is planning to make a mobile game which can be played online or offline and wil be
hosted on EC2. The user wants to ensure that if someone breaks the highest score or they
achieve some milestone they can inform all their colleagues through email. Which of the below
mentioned AWS services helps achieve this goal?

A. AWS Simple Workflow Service.
B. AWS Simple Queue Service.
C. Amazon Cognito
D. AWS Simple Email Service.

Answer(s): D
Explanation:
Amazon Simple Email Service (Amazon SES) is a highly scalable and cost-effective email-
sending service for businesses and developers. It integrates with other AWS services, making it
easy to send emails from applications that are hosted on AWS.
Reference:
http://aws.amazon.com/ses/faqs/

QUESTION: 12
Which one of the following operations is NOT a DynamoDB operation?

A. BatchWriteItem
B. DescribeTable
C. BatchGetItem
D. BatchDeleteItem

Answer(s): D
Explanation:
In DynamoDB, DeleteItem deletes a single item in a table by primary key, but BatchDeleteItem
doesn't exist.
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/operationlist.html

QUESTION: 13
True or False: In DynamoDB, Scan operations are always eventual y consistent.

A. No, scan is like Query operation
B. Yes
C. No, scan is strongly consistent by default
D. No, you can optionally request strongly consistent scan.

Answer(s): B
Explanation:
In DynamoDB, Scan operations are always eventual y consistent.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/APISummary.html

QUESTION: 14
Regarding Amazon SNS, when you want to subscribe to a topic and receive notifications to your
email, in the Protocol drop-down box, you should select _______.

A. Email
B. Message
C. SMTP
D. IMAP

Answer(s): A
Explanation:
In Amazon SNS, when you want to subscribe to a topic and receive notifications to your email,
select Email in the Protocol drop-down box. Enter an email address you can use to receive the
notification in the Endpoint field.
Reference:
http://docs.aws.amazon.com/sns/latest/dg/SubscribeTopic.html

QUESTION: 15
In Amazon EC2, which of the following is the type of monitoring data for Amazon EBS volumes
that is available automatically in 5-minute periods at no charge?

A. Primary
B. Basic
C. Initial
D. Detailed

Answer(s): B
Explanation:
Basic is the type of monitoring data (for Amazon EBS volumes) which is available automatically
in 5-minute periods at no charge called.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/monitoring-volume-status.html

QUESTION: 16
In DynamoDB, to get a detailed listing of secondary indexes on a table, you can use the _____
action.

A. DescribeTable
B. BatchGetItem
C. GetItem
D. TableName

Answer(s): A
Explanation:
In DynamoDB, DescribeTable returns information about the table, including the current status of
the table, when it was created, the primary key schema, and any indexes on the table.

Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/SecondaryIndexes.html

QUESTION: 17
A user has launched an EC2 instance. However, due to some reason the instance was
terminated. If the user wants to find out the reason for termination, where can he find the
details?

A. The user can get information from the AWS console, by checking the Instance description
under the State transition reason label
B. The user can get information from the AWS console, by checking the Instance description
under the Instance Termination reason label
C. The user can get information from the AWS console, by checking the Instance description
under the Instance Status Change reason label
D. It is not possible to find the details after the instance is terminated

Answer(s): A
Explanation:
An EC2 instance, once terminated, may be available in the AWS console for a while after
termination. The user can find the details about the termination from the description tab under
the label State transition reason. If the instance is stil running, there wil be no reason listed. If
the user has explicitly stopped or terminated the instance, the reason wil be "User initiated
shutdown".
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_InstanceStraightToTerminated.
html

QUESTION: 18
___________ is a task coordination and state management service for cloud applications.

A. Amazon SES
B. Amazon SWF
C. Amazon FPS
D. Amazon SNS

Answer(s): B
Explanation:
Amazon Simple Workflow (Amazon SWF) is a task coordination and state management service
for cloud applications. With Amazon SWF, you can stop writing complex glue-code and state
machinery and invest more in the business logic that makes your applications unique.
Reference:
http://aws.amazon.com/swf/

QUESTION: 19
When you create a table with a hash-and-range key, you must define one or more secondary
indexes on that table.

A. False, hash-range key is another name for secondary index

B. False, it is optional
C. True
D. False, when you have Hash-Range key you cannot define Secondary index

Answer(s): B
Explanation:
When you create a table with a hash-and-range key in DynamoDB, you can also define one or
more secondary indexes on that table.
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LSI.html

QUESTION: 20
A user is planning to create a structured database in the cloud. Which of the below mentioned
AWS offerings help the user achieve the goal?

A. AWS DynamoDB
B. AWS RDS
C. AWS SimpleDB
D. AWS RSD

Answer(s): B
Explanation:
AWS RDS is a managed database server offered by AWS, which makes it easy to set up,
operate, and scale a relational database or structured data in cloud.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

QUESTION: 21
A user has created a MySQL RDS instance with PIOPS. Which of the below mentioned
statements wil help user understand the advantage of PIOPS?

A. The user can achieve additional dedicated capacity for the EBS I/O with an enhanced RDS
option
B. It uses optimized EBS volumes and optimized configuration stacks
C. It provides a dedicated network bandwidth between EBS and RDS
D. It uses a standard EBS volume with optimized configuration the stacks

Answer(s): B
Explanation:
RDS DB instance storage comes in two types: standard and provisioned IOPS. Standard
storage is allocated on the Amazon EBS volumes and connected to the user's DB instance.
Provisioned IOPS uses optimized EBS volumes and an optimized configuration stack. It
provides additional, dedicated capacity for the EBS I/O.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

QUESTION: 22
A user is accessing an EC2 instance on the SSH port for IP 10.20.30.40. Which one is a secure

way to configure that the instance can be accessed only from this IP?

A. In the security group, open port 22 for IP 10.20.30.40/0
B. In the security group, open port 22 for IP 10.20.30.40/32
C. In the security group, open port 22 for IP 10.20.30.40/24
D. In the security group, open port 22 for IP 10.20.30.40

Answer(s): B
Explanation:
In AWS EC2, while configuring a security group, the user needs to specify the IP address in
CIDR notation. The CIDR IP range 10.20.30.40/32 says it is for a single IP 10.20.30.40. If the
user specifies the IP as 10.20.30.40 only, the security group will not accept and ask it in a CIRD
format.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-
security.html

QUESTION: 23
When a user is detaching an EBS volume from a running instance and attaching it to a new
instance, which of the below mentioned options should be followed to avoid file system
damage?

A. Unmount the volume first
B. Stop all the I/O of the volume before processing
C. Take a snapshot of the volume before detaching
D. Force Detach the volume to ensure that all the data stays intact

Answer(s): A
Explanation:
When a user is trying to detach an EBS volume, the user can either terminate the instance or
explicitly remove the volume. It is a recommended practice to unmount the volume first to avoid
any file system damage.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-
volume.html

QUESTION: 24
A user is planning to host a scalable dynamic web application on AWS. Which of the services
may not be required by the user to achieve automated scalability?

A. CloudWatch
B. S3
C. AutoScaling
D. AWS EC2 instances

Answer(s): B
Explanation:
The user can achieve automated scaling by launching different EC2 instances and making them
a part of an ELB. Cloudwatch wil be used to monitor the resources and based on the scaling
need it wil trigger policies. AutoScaling is then used to scale up or down the instances.
Reference: http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/WhatIsAutoScaling.html

QUESTION: 25
Which one of the following data types does Amazon DynamoDB not support?

A. Arrays
B. String
C. Binary
D. Number Set

Answer(s): A
Explanation:
Amazon DynamoDB supports the following data types:
Scalar data types (like Number, String, and Binary)
Multi-valued types (like String Set, Number Set, and Binary Set).
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModel.Data Types

QUESTION: 26
Regarding Amazon SNS, you can send notification messages to mobile devices through any of
the following supported push notification services, EXCEPT:

A. Google Cloud Messaging for Android (GCM)
B. Apple Push Notification Service (APNS)
C. Amazon Device Messaging (ADM)
D. Microsoft Windows Mobile Messaging (MWMM)

Answer(s): D
Explanation:
In Amazon SNS, you have the ability to send notification messages directly to apps on mobile
devices. Notification messages sent to a mobile endpoint can appear in the mobile app as
message alerts, badge updates, or even sound alerts. Microsoft Windows Mobile Messaging
(MWMM) doesn't exist and is not supported by Amazon SNS.
Reference:
http://docs.aws.amazon.com/sns/latest/dg/SNSMobilePush.html

QUESTION: 27
A user plans to use RDS as a managed DB platform. Which of the below mentioned features is
not supported by RDS?

A. Automated backup
B. Automated scaling to manage a higher load
C. Automated failure detection and recovery
D. Automated software patching

Answer(s): B
Explanation: AWS RDS provides a managed DB platform, which offers features, such as automated backup,
patch management, automated failure detection and recovery. The scaling is not automated and
the user needs to plan it with a few clicks.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

QUESTION: 28
A user has not enabled versioning on an S3 bucket. What wil be the version ID of the object
inside that bucket?

A. 0
B. There wil be no version attached
C. Null
D. Blank

Answer(s): C
Explanation:
S3 objects stored in the bucket before the user has set the versioning state have a version ID of
nul . When the user enables versioning, the objects in the bucket do not change and their ID
remains null.
Reference:
http://docs.aws.amazon.com/AmazonS3/latest/dev/AddingObjectstoVersionSuspendedBuckets.
html

QUESTION: 29
A user has created a queue named "myqueue" with SQS. There are four messages published
to queue which are not received by the consumer yet. If the user tries to delete the queue, what
wil happen?

A. A user can never delete a queue manual y. AWS deletes it after 30 days of inactivity on
queue
B. It will initiate the delete but wait for four days before deleting until all messages are deleted
automatically.
C. It wil ask user to delete the messages first
D. It wil delete the queue

Answer(s): D
Explanation:
SQS allows the user to move data between distributed components of applications so they can
perform different tasks without losing messages or requiring each component to be always
available. The user can delete a queue at any time, whether it is empty or not. It is important to
note that queues retain messages for a set period of time. By default, a queue retains
messages for four days.
Reference:
http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/SQSConce
pts.html

QUESTION: 30

What happens if your application performs more reads or writes than your provisioned capacity?

A. Nothing
B. requests above your provisioned capacity wil be performed but you wil receive 400 error
codes.
C. requests above your provisioned capacity wil be performed but you will receive 200 error
codes.
D. requests above your provisioned capacity wil be throttled and you wil receive 400 error
codes.

Answer(s): D
Explanation:
Speaking about DynamoDB, if your application performs more reads/second or writes/second
than your table's provisioned throughput capacity allows, requests above your provisioned
capacity wil be throttled and you wil receive 400 error codes.
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIn
tro.html

QUESTION: 31
In relation to Amazon SQS, how can you ensure that messages are delivered in order?

A. Increase the size of your queue
B. Send them with a timestamp
C. Give each message a unique id.
D. AWS cannot guarantee that you wil receive messages in the exact order you sent them

Answer(s): D
Explanation:
Amazon SQS makes a best effort to preserve order in messages, but due to the distributed
nature of the queue, AWS cannot guarantee that you will receive messages in the exact order
you sent them. You typically place sequencing information or timestamps in your messages so
that you can reorder them upon receipt.
Reference:
https://aws.amazon.com/items/1343?externalID=1343

QUESTION: 32
An organization has launched two applications: one for blogging and one for ECM on the same
AWS Linux EC2 instance running in the AWS VPC. The organization has attached two private
IPs (primary and secondary) to the above mentioned instance. The organization wants the
instance OS to recognize the secondary IP address. How can the organization configure this?

A. Use the ec2-net-utility package which updates routing tables, uses DHCP to refresh the
secondary IP and adds the network interface.
B. Use the ec2-net-utils package which wil configure an additional network interface and update
the routing table
C. Use the ec2-ip-update package which can configure the network interface as well as update
the secondary IP with DHCP.
D. Use the ec2-ip-utility package which can update the routing tables as well as refresh the secondary IP using DHCP.

Answer(s): B
Explanation:
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user's AWS account. It
enables the user to launch AWS resources into a virtual network that the user has defined. With
VPC the user can specify multiple private IP addresses for his instances. The number of
network interfaces and private IP addresses that a user can specify for an instance depends on
the instance type. This scenario helps when the user wants to host multiple websites on a single
EC2 instance. After the user has assigned a secondary private IP address to his instance, he
needs to configure the operating system on that instance to recognize the secondary private IP
address. For AWS Linux, the ec2-net-utils package can take care of this step. It configures
additional network interfaces that the user can attach while the instance is running, refreshes
secondary IP addresses during DHCP lease renewal, and updates the related routing rules.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/MultipleIP.html

QUESTION: 33
What kind of service is provided by AWS DynamoDB?

A. Relational Database
B. NoSQL Database
C. Dynamic Database
D. Document Database

Answer(s): B
Explanation:
DynamoDB is a fast, fully managed NoSQL database service.
Reference:
http://aws.amazon.com/dynamodb/

QUESTION: 34
In relation to Amazon SQS, how many queues and messages can you have per queue for each
user?

A. Unlimited
B. 10
C. 256
D. 500

Answer(s): A
Explanation:
Amazon SQS supports an unlimited number of queues and unlimited number of messages per
queue for each user. Please be aware that Amazon SQS automatical y deletes messages that
have been in the queue for more than 4 days.
Reference:
https://aws.amazon.com/items/1343?externalID=1343

QUESTION: 35
Doug has created a VPC with CIDR 10.201.0.0/16 in his AWS account. In this VPC he has
created a public subnet with CIDR block 10.201.31.0/24. While launching a new EC2 from the
console, he is not able to assign the private IP address 10.201.31.6 to this instance. Which is
the most likely reason for this issue?

A. Private IP address 10.201.31.6 is not part of the associated subnet's IP address range.
B. Private IP address 10.201.31.6 is blocked via ACLs in Amazon infrastructure as a part of
platform security.
C. Private address IP 10.201.31.6 is currently assigned to another interface.
D. Private IP address 10.201.31.6 is reserved by Amazon for IP networking purposes.

Answer(s): C
Explanation:
In Amazon VPC, you can assign any Private IP address to your instance as long as it is:
Part of the associated subnet's IP address range
Not reserved by Amazon for IP networking purposes
Not currently assigned to another interface
Reference:
http://aws.amazon.com/vpc/faqs/

QUESTION: 36
Regarding Amazon SQS, are there restrictions on the names of Amazon SQS queues?

A. No
B. Yes. Queue names must be unique within an AWS account and you cannot use hyphens (-)
and underscores (_)
C. Yes. Queue names are limited to 80 characters and queue names must be unique within an
AWS account
D. Yes. Queue names are limited to 80 characters but queue names do not need to be unique
within an AWS account

Answer(s): C
Explanation:
Queue names are limited to 80 characters. Alphanumeric characters plus hyphens (-) and
underscores (_) are allowed. Queue names must be unique within an AWS account. After you
delete a queue, you can reuse the queue name.
Reference:
https://aws.amazon.com/sqs/faqs/

QUESTION: 37
In Amazon SNS, to send push notifications to mobile devices using Amazon SNS and ADM, you
need to obtain the following, except:

A. Client secret
B. Client ID
C. Device token
D. Registration ID

Answer(s): C
Explanation:
To send push notifications to mobile devices using Amazon SNS and ADM, you need to obtain
the following: Registration ID and Client secret.
Reference:
http://docs.aws.amazon.com/sns/latest/dg/SNSMobilePushPrereq.html

QUESTION: 38
Regarding Amazon SNS, to begin using Amazon SNS mobile push notifications, you first need
__________that uses one of the supported push notification services: APNS, GCM, or ADM.

A. an access policy for the mobile endpoints
B. to active push notification service of Amazon SNS
C. to know the type of mobile device operating system
D. an app for the mobile endpoints

Answer(s): D
Explanation:
In Amazon SNS, to begin using Amazon SNS mobile push notifications, you first need an app
for the mobile endpoints that uses one of the supported push notification services: APNS, GCM,
or ADM. After you've registered and configured the app to use one of these services, you
configure Amazon SNS to send push notifications to the mobile endpoints.
Reference:
http://docs.aws.amazon.com/sns/latest/dg/SNSMobilePush.html

QUESTION: 39
How many types of block devices does Amazon EC2 support?

A. 5
B. 1
C. 2
D. 4

Answer(s): C
Explanation:
Amazon EC2 supports 2 types of block devices.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/block-device-mapping-
concepts.html

QUESTION: 40
ExamKiller (with AWS account ID 111122223333) has created 50 IAM users for its
organization's employees. ExamKil er wants to make the AWS console login URL for all IAM
users as: https://
examkil er.signin.aws.amazon.com/console/. How can this be configured?

A. Create a bucket with the name ExamKil er and map it with the IAM alias
B. It is not possible to have capital letters as a part of the alias name

C. The user needs to use Route 53 to map the ExamKil er domain and IAM URL
D. For the AWS account, create an alias ExamKil er for the IAM login

Answer(s): B
Explanation:
If a user wants the URL of the AWS IAM sign-in page to have the company name instead of the
AWS account ID, he can create an alias for his AWS account ID. The alias must be unique
across all Amazon Webservices products and contain only digits, lowercase letters, and
hyphens.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/AccountAlias.html

QUESTION: 41
Can a user get a notification of each instance start / terminate configured with Auto Scaling?

A. Yes, always
B. No
C. Yes, if configured with the Auto Scaling group
D. Yes, if configured with the Launch Config

Answer(s): C
Explanation:
The user can get notifications using SNS if he has configured the notifications while creating the
Auto Scaling group.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/GettingStartedTutorial.html
QUESTION: 42
AutoScaling is configured with 3 AZs. Each zone has 5 instances running. If AutoScaling wants
to terminate an instance based on the policy action, which instance wil it terminate first?

A. Terminate the first launched instance
B. Randomly select the instance for termination
C. Terminate the instance from the AZ which does not have a high AWS load
D. Terminate the instance from the AZ which has instances running near to the bil ing hour

Answer(s): B
Explanation:
Before Auto Scaling selects an instance to terminate, it first identifies the Availability Zone that
has more instances than the other Availability Zones used by the group. If all the Availability
Zones have the same number of instances, it identifies a random Availability Zone.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/us-termination-policy.html

QUESTION: 43
In regard to DynamoDB, can I delete local secondary indexes?

A. Yes, if it is a primary hash key index

B. No
C. Yes, if it is a local secondary indexes
D. Yes, if it is a Global secondary indexes

Answer(s): B
Explanation:
In DynamoDB, an index cannot be modified once it is created.
Reference:
http://aws.amazon.com/dynamodb/faqs/#security_anchor

QUESTION: 44
You need to develop and run some new applications on AWS and you know that Elastic
Beanstalk and CloudFormation can both help as a deployment mechanism for a broad range of
AWS resources. Which of the following statements best describes the differences between
Elastic Beanstalk and CloudFormation?

A. Elastic Beanstalk uses Elastic load balancing and CloudFormation doesn't.
B. CloudFormation is faster in deploying applications than Elastic Beanstalk.
C. CloudFormation is much more powerful than Elastic Beanstalk, because you can actual y
design and script custom resources
D. Elastic Beanstalk is faster in deploying applications than CloudFormation.

Answer(s): C
Explanation:
These services are designed to complement each other. AWS Elastic Beanstalk provides an
environment to easily develop and run applications in the cloud. It is integrated with developer
tools and provides a one-stop experience for you to manage the lifecycle of your applications.
AWS CloudFormation is a convenient deployment mechanism for a broad range of AWS
resources. It supports the infrastructure needs of many different types of applications such as
existing enterprise applications, legacy applications, applications built using a variety of AWS
resources and container-based solutions (including those built using AWS Elastic Beanstalk).
AWS CloudFormation introduces two new concepts: The template, a JSON-format, text-based
file that describes all the AWS resources you need to deploy to run your application and the
stack, the set of AWS resources that are created and managed as a single unit when AWS
CloudFormation instantiates a template.
Reference:
http://aws.amazon.com/cloudformation/faqs/

QUESTION: 45
Can you SSH to your private machines that reside in a VPC from outside without elastic IP?

A. Yes, but only if you have direct connect or vpn
B. Only if you are using a non-US region
C. Only if you are using a US region
D. No

Answer(s): A
Explanation:
The instances that reside in the private subnets of your VPC are not reachable from the Internet, meaning that is not possible to ssh into them. To interact with them you can use a
bastion server, located in a public subnet, that will act as a proxy for them.
You can also connect if you have direct connect or vpn.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html

QUESTION: 46
Does AWS CloudFormation support Amazon EC2 tagging?

A. It depends if the Amazon EC2 tagging has been defined in the template.
B. No, it doesn't support Amazon EC2 tagging.
C. No, CloudFormation doesn't support any tagging
D. Yes, AWS CloudFormation supports Amazon EC2 tagging

Answer(s): D
Explanation:
In AWS CloudFormation, Amazon EC2 resources that support the tagging feature can also be
tagged in an AWS template. The tag values can refer to template parameters, other resource
names, resource attribute values (e.g. addresses), or values computed by simple functions
(e.g., a concatenated list of strings).
Reference:
http://aws.amazon.com/cloudformation/faqs/

QUESTION: 47
A user has created a MySQL RDS instance. Which of the below mentioned options is
mandatory to configure while creating an instance?

A. Multi AZ deployment setup
B. Automated backup window
C. Availability Zone
D. Maintenance window

Answer(s): A
Explanation:
When creating an RDS instance, the user needs to specify whether it is Multi AZ or not. If the
user does not provide the value for the zone, the maintenance window or automated backup
window, RDS wil automatical y select the value.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html

QUESTION: 48
A user has enabled the automated backup, but not specified the backup window. What wil RDS
do in this case?

A. Wil throw an error on instance launch
B. RDS wil take 3 AM - 3:30 AM as the default window
C. RDS assigns a random time period based on the region
D. Wil not allow to launch a DB instance

Answer(s): C
Explanation:
If the user does not specify a preferred backup window while enabling an automated backup,
Amazon RDS assigns a default 30-minute backup window which is selected at random from an
8-hour block of time per region.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoring
AmazonR DSInstances.html

QUESTION: 49
A user is planning to host a web server as well as an app server on a single EC2 instance which
is a part of the public subnet of a VPC. How can the user setup to have two separate public IPs
and separate security groups for both the application as well as the web server?

A. Launch a VPC instance with two network interfaces. Assign a separate security group to
each and AWS wil assign a separate public IP to them.
B. Launch VPC with two separate subnets and make the instance a part of both the subnets.
C. Launch a VPC instance with two network interfaces. Assign a separate security group and
elastic IP to them.
D. Launch a VPC with ELB such that it redirects requests to separate VPC instances of the
public subnet.

Answer(s): C
Explanation:
If you need to host multiple websites(with different IPs) on a single EC2 instance, the following
is the suggested method from AWS.
Launch a VPC instance with two network interfaces
Assign elastic IPs from VPC EIP pool to those interfaces (Because, when the user has attached
more than one network interface with an instance, AWS cannot assign public IPs to them.)
Assign separate Security Groups if separate Security Groups are needed This scenario also
helps for operating network appliances, such as firewalls or load balancers that have multiple
private IP addresses for each network interface.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/MultipleIP.html

QUESTION: 50
An online gaming site asked you if you can deploy a database that is a fast, highly scalable
NoSQL database service in AWS for a new site that he wants to build. Which database should
you recommend?

A. Amazon Redshift
B. Amazon SimpleDB
C. Amazon DynamoDB
D. Amazon RDS

Answer(s): C
Explanation:
Amazon DynamoDB is ideal for database applications that require very low latency and predictable performance at any scale but don't need complex querying capabilities like joins or
transactions. Amazon DynamoDB is a fully-managed NoSQL database service that offers high
performance, predictable throughput and low cost. It is easy to set up, operate, and scale. With
Amazon DynamoDB, you can start small, specify the throughput and storage you need, and
easily scale your capacity requirements on the fly. Amazon DynamoDB automatically partitions
data over a number of servers to meet your request capacity. In addition, DynamoDB
automatically replicates your data synchronously across multiple Availability Zones within an
AWS Region to ensure high-availability and data durability.
Reference:
https://aws.amazon.com/running_databases/#dynamodb_anchor

QUESTION: 51
How long are the messages kept on an SQS queue by default?

A. If a message is not read, it is never deleted
B. 2 weeks
C. 1 day
D. 4 days

Answer(s): D
Explanation:
The SQS message retention period is configurable and can be set anywhere from 1 minute to 2
weeks. The default is 4 days and once the message retention limit is reached your messages
wil be automatically deleted. The option for longer message retention provides greater flexibility
to allow for longer intervals between message production and consumption.
Reference:
https://aws.amazon.com/sqs/faqs/

QUESTION: 52
Regarding Amazon SWF, the coordination logic in a workflow is contained in a software
program called a ________.

A. Handler
B. Decider
C. Cordinator
D. Worker

Answer(s): B
Explanation:
In Amazon SWF, the coordination logic in a workflow is contained in a software program called
a decider. The decider schedules activity tasks, provides input data to the activity workers,
processes events that arrive while the workflow is in progress, and ultimately ends (or closes)
the workflow when the objective has been completed.
Reference:
http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-intro-to-swf.html

QUESTION: 53
A user has attached one RDS security group with 5 RDS instances. The user has changed the ingress rule for the security group. What wil be the initial status of the ingress rule?

A. Approving
B. Implementing
C. Authorizing
D. It is not possible to assign a single group to multiple DB instances

Answer(s): C
Explanation:
When the user makes any changes to the RDS security group the rule status will be authorizing
for some time until the changes are applied to all instances that the group is connected with.
Once the changes are propagated the rule status wil change to authorized.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithSecurityGroup
s.html

QUESTION: 54
A user has attached an EBS volume to a running Linux instance as a "/dev/sdf" device. The
user is unable to see the attached device when he runs the command "df -h". What is the
possible reason for this?

A. The volume is not in the same AZ of the instance
B. The volume is not formatted
C. The volume is not attached as a root device
D. The volume is not mounted

Answer(s): D
Explanation:
When a user creates an EBS volume and attaches it as a device, it is required to mount the
device. If the device/volume is not mounted it wil not be available in the listing.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.html

QUESTION: 55
A user has setup an application on EC2 which uses the IAM user access key and secret access
key to make secure calls to S3. The user wants to temporarily stop the access to S3 for that
IAM user. What should the root owner do?

A. Delete the IAM user
B. Change the access key and secret access key for the users
C. Disable the access keys for the IAM user
D. Stop the instance

Answer(s): C
Explanation:
If the user wants to temporarily stop the access to S3 the best solution is to disable the keys.
Deleting the user wil result in a loss of all the credentials and the app will not be useful in the
future. If the user stops the instance IAM users can stil access S3. The change of the key does
not help either as they are stil active. The best possible solution is to disable the keys.

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