Which of the following are characteristics of Amazon VPC subnets? Choose 2 answers
A. Each subnet spans at least 2 Availability Zones to provide a high-availability environment.
B. Each subnet maps to a single Availability Zone.
C. CIDR block mask of/25 is the smallest range supported.
D. By default, all subnets can route between each other, whether they are private or public.
E. Instances in a private subnet can communicate with the Internet only if they have an Elastic
IP. - answer✔B,D
You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS)
for persistence At times throughout the day, you are seeing large variance in the response
times of the database queries Looking into the instance with the isolate command you see a lot
of wait time on the disk volume that the database's data is stored on. What two ways can you
improve the performance of the database's storage while maintaining the current persistence
of the data? Choose 2 answers
a. Move to an SSD backed instance
b. Move the database to an EBS-Optimized Instance
c. Use Provisioned IOPs EBS
d. Use the ephemeral storage on an m2.4xLarge Instance Instead - answer✔B,C
What does Amazon SWF stand for?
a. Simple Web Flow
b. Simple Work Flow
c. Simple Wireless Forms
d. Simple Web Form - answer✔B
For which of the following use cases are Simple Workflow Service (SWF) and Amazon EC2 an
appropriate solution? Choose 2 answers
a. Using as an endpoint to collect thousands of data points per hour from a distributed fleet of
sensors
b. Managing a multi-step and multi-decision checkout process of an e-commerce website
c. Orchestrating the execution of distributed and auditable business processes
d. Using as an SNS (Simple Notification Service) endpoint to trigger execution of video
transcoding jobs
e. Using as a distributed session store for your web application - answer✔B,C
Amazon SWF is designed to help users...
a. ... Design graphical user interface interactions
b. ... Manage user identification and authorization
c. ... Store Web content
d. ... Coordinate synchronous and asynchronous tasks which are distributed and fault tolerant. -
answer✔D
What does a "Domain" refer to in Amazon SWF?
a. A security group in which only tasks inside can communicate with each other
b. A special type of worker
c. A collection of related Workflows
d. The DNS record for the Amazon SWF service - answer✔C
In the basic monitoring package for EC2, Amazon CloudWatch provides the following metrics:
a. Web server visible metrics such as number failed b. transaction requests
b. Operating system visible metrics such as memory utilization
c. Database visible metrics such as number of connections
d. Hypervisor visible metrics such as CPU utilization - answer✔d
Which of the following requires a custom CloudWatch metric to monitor?
a. Memory Utilization of an EC2 instance
b. CPU Utilization of an EC2 instance
c. Disk usage activity of an EC2 instance
d. Data transfer of an EC2 instance - answer✔A
A user has configured CloudWatch monitoring on an EBS backed EC2 instance. If the user has
not attached any additional device, which of the below mentioned metrics will always show a 0
value?
a. DiskReadBytes
b. NetworkIn
c. NetworkOut
d. CPUUtilization - answer✔A
A user is running a batch process on EBS backed EC2 instances. The batch process starts a few
instances to process Hadoop Map reduce jobs, which can run between 50 - 600 minutes or
sometimes for more time. The user wants to configure that the instance gets terminated only
when the process is completed. How can the user configure this with CloudWatch?
a. Setup the CloudWatch action to terminate the instance when the CPU utilization is less than
5%
b. Setup the CloudWatch with Auto Scaling to terminate all the instances
c. Setup a job which terminates all instances after 600 minutes
d. It is not possible to terminate instances automatically - answer✔A
An AWS account owner has setup multiple IAM users. One IAM user only has CloudWatch
access. He has setup the alarm action, which stops the EC2 instances when the CPU utilization is
below the threshold limit. What will happen in this case?
a. It is not possible to stop the instance using the CloudWatch alarm
b. CloudWatch will stop the instance when the action is executed
c. The user cannot set an alarm on EC2 since he does not have the permission
d. The user can setup the action but it will not be executed if the user does not have EC2 rights -
answer✔D
A user has launched 10 instances from the same AMI ID using Auto Scaling. The user is trying to
see the average CPU utilization across all instances of the last 2 weeks under the CloudWatch
console. How can the user achieve this?
a. View the Auto Scaling CPU metrics
b. Aggregate the data over the instance AMI ID
c. The user has to use the CloudWatchanalyser to find the average data across instances
d. It is not possible to see the average CPU utilization of the same AMI ID since the instance ID
is different - answer✔B
What does Amazon RDS stand for?
a. Regional Data Server.
b. Relational Database Service
c. Regional Database Service. - answer✔B
How many relational database engines does RDS currently support?
a. MySQL, Postgres, MariaDB, Oracle and Microsoft SQL Server
b. Just two: MySQL and Oracle.
c. Five: MySQL, PostgreSQL, MongoDB, Cassandra and SQLite.
d. Just one: MySQL. - answer✔A
What is the name of licensing model in which I can use your existing Oracle Database licenses
to run Oracle deployments on Amazon RDS?
a. Bring Your Own License
b. Role Bases License
c. Enterprise License
d. License Included - answer✔A
Will I be charged if the DB instance is idle?
a. No
b. Yes
c. Only is running in GovCloud
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