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Q1. Name the disk storage supported by Amazon Elastic Compute Cloud (EC2).
A. None of these
B. Amazon AppStream store
C. Amazon SNS store
D. Amazon Instance Store
Answer: D
Explanation:
Amazon EC2 supports the following storage options: Amazon Elastic Block Store (Amazon EBS) Amazon EC2 Instance Store Amazon Simple Storage Service (Amazon S3)
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html
Q2. In Amazon EC2 Container Service, are other container types supported?
A. Yes, EC2 Container Service supports any container service you need.
B. Yes, EC2 Container Service also supports Microsoft container service.
C. No, Docker is the only container platform supported by EC2 Container Service presently.
D. Yes, EC2 Container Service supports Microsoft container service and Openstack.
Answer: C
Explanation:
In Amazon EC2 Container Service, Docker is the only container platform supported by EC2 Container Service presently.
Reference: http://aws.amazon.com/ecs/faqs/
Q3. A user is aware that a huge download is occurring on his instance. He has already set the Auto Scaling policy to increase the instance count when the network I/O increases beyond a certain limit. How can the user ensure that this temporary event does not result in scaling?
A. The network I/O are not affected during data download
B. The policy cannot be set on the network I/O
C. There is no way the user can stop scaling as it is already configured
D. Suspend scaling
Answer: D
Explanation:
The user may want to stop the automated scaling processes on the Auto Scaling groups either to perform manual operations or during emergency situations. To perform this, the user can suspend one or more scaling processes at any time. Once it is completed, the user can resume all the suspended processes. Reference:http://docs.aws.amazon.com/AutoScaIing/latest/Deve|operGuide/AS_Concepts.htmI
Q4. You are playing around with setting up stacks using JSON templates in C|oudFormation to try and understand them a little better. You have set up about 5 or 6 but now start to wonder if you are being charged for these stacks. What is AWS's billing policy regarding stack resources?
A. You are not charged for the stack resources if they are not taking any traffic.
B. You are charged for the stack resources for the time they were operating (even if you deleted the stack right away)
C. You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 60 minutes)
D. You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 30 minutes)
Answer: B
Explanation:
A stack is a collection of AWS resources that you can manage as a single unit. In other words, you can create, update, or delete a collection of resources by creating, updating, or deleting stacks. All the resources in a stack are defined by the stack's AWS CIoudFormation template. A stack, for instance, can include all the resources required to run a web application, such as a web server, a database, and networking rules. If you no longer require that web application, you can simply delete the stack, and all of its related resources are deleted.
You are charged for the stack resources for the time they were operating (even if you deleted the stack right away).
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/stacks.html
Q5. What does the following command do with respect to the Amazon EC2 security groups? ec2-revoke RevokeSecurityGroup Ingress
A. Removes one or more security groups from a rule.
B. Removes one or more security groups from an Amazon EC2 instance.
C. Removes one or more rules from a security group.
D. Removes a security group from our account.
Answer: C
Q6. A group can contain many users. Can a user belong to multiple groups?
A. Yes always
B. No
C. Yes but only if they are using two factor authentication
D. Yes but only in VPC
Answer: A
Q7. Your website is serving on-demand training videos to your workforce. Videos are uploaded monthly in high resolution MP4 format. Your workforce is distributed globally often on the move and using company-provided tablets that require the HTTP Live Streaming (HLS) protocol to watch a video. Your company has no video transcoding expertise and it required you may need to pay for a consultant.
How do you implement the most cost-efficient architecture without compromising high availability and quality of video delivery'?
A. A video transcoding pipeline running on EC2 using SQS to distribute tasks and Auto Scaling to adjust the number of nodes depending on the length of the queue. EBS volumes to host videos and EBS snapshots to incrementally backup original files after a few days. CIoudFront to serve HLS transcoded videos from EC2.
B. Elastic Transcoder to transcode original high-resolution MP4 videos to HLS. EBS volumes to host videos and EBS snapshots to incrementally backup original files after a few days. CIoudFront to serve HLS transcoded videos from EC2.
C. Elastic Transcoder to transcode original high-resolution NIP4 videos to HLS. 53 to host videos with Lifecycle Management to archive original files to Glacier after a few days. C|oudFront to serve HLS transcoded videos from 53.
D. A video transcoding pipeline running on EC2 using SQS to distribute tasks and Auto Scaling to adjust the number of nodes depending on the length of the queue. 53 to host videos with Lifecycle Management to archive all files to Glacier after a few days. CIoudFront to serve HLS transcoded videos from Glacier.
Answer: C
Q8. Can I encrypt connections between my application and my DB Instance using SSL?
A. No
B. Yes
C. Only in VPC
D. Only in certain regions
Answer: B
Q9. Your team has a tomcat-based Java application you need to deploy into development, test and production environments. After some research, you opt to use Elastic Beanstalk due to its tight integration with your developer tools and RDS due to its ease of management. Your QA team lead points out that you need to roll a sanitized set of production data into your environment on a nightly basis. Similarly, other software teams in your org want access to that same restored data via their EC2 instances in your VPC .The
optimal setup for persistence and security that meets the above requirements would be the following.
A. Create your RDS instance as part of your Elastic Beanstalk definition and alter its security group to allow access to it from hosts in your application subnets.
B. Create your RDS instance separately and add its IP address to your appIication's DB connection strings in your code Alter its security group to allow access to it from hosts within your VPC's IP address block.
C. Create your RDS instance separately and pass its DNS name to your app's DB connection string as an environment variable. Create a security group for client machines and add it as a valid source for DB traffic to the security group of the RDS instance itself.
D. Create your RDS instance separately and pass its DNS name to your's DB connection string as an environment variable Alter its security group to allow access to It from hosts In your application subnets.
Answer: A
Q10. What is a Security Group?
A. None of these.
B. A list of users that can access Amazon EC2 instances.
C. An Access Control List (ACL) for AWS resources.
D. A firewall for inbound traffic, built-in around every Amazon EC2 instance.
Answer: D
Q11. After setting up a Virtual Private Cloud (VPC) network, a more experienced cloud engineer suggests that to achieve low network latency and high network throughput you should look into setting up a placement group. You know nothing about this, but begin to do some research about it and are especially curious about its limitations. Which of the below statements is wrong in describing the limitations of a placement group?
A. Although launching multiple instance types into a placement group is possible, this reduces the likelihood that the required capacity will be available for your launch to succeed.
B. A placement group can span multiple Availability Zones.
C. You can't move an existing instance into a placement group.
D. A placement group can span peered VPCs
Answer: B
Explanation:
A placement group is a logical grouping of instances within a single Availability Zone. Using placement groups enables applications to participate in a low-latency, 10 Gbps network. Placement groups are recommended for applications that benefit from low network latency, high network throughput, or both. To provide the lowest latency, and the highest packet-per-second network performance for your placement group, choose an instance type that supports enhanced networking.
Placement groups have the following limitations:
The name you specify for a placement group a name must be unique within your AWS account. A placement group can't span multiple Availability Zones.
Although launching multiple instance types into a placement group is possible, this reduces the likelihood that the required capacity will be available for your launch to succeed. We recommend using the same instance type for all instances in a placement group.
You can't merge placement groups. Instead, you must terminate the instances in one placement group, and then relaunch those instances into the other placement group.
A placement group can span peered VPCs; however, you will not get full-bisection bandwidth between instances in peered VPCs. For more information about VPC peering connections, see VPC Peering in the Amazon VPC User Guide.
You can't move an existing instance into a placement group. You can create an AM from your existing instance, and then launch a new instance from the AMI into a placement group.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html
Q12. By default, EBS volumes that are created and attached t o an instance at launch are deleted when t hat instance is terminated. You can modify this behavior by changing the value of the flag _ to false when you launch the instance
A. Delete On Termination
B. Remove On Deletion
C. Remove On Termination
D. Terminate On Deletion
Answer: A
Q13. You are the new IT architect in a company that operates a mobile sleep tracking application
When activated at night, the mobile app is sending collected data points of 1 kilobyte every 5 minutes to
your backend
The backend takes care of authenticating the user and writing the data points into an Amazon DynamoDB table.
Every morning, you scan the table to extract and aggregate last night's data on a per user basis, and store the results in Amazon 53.
Users are notified via Amazon 5NI5 mobile push notifications that new data is available, which is parsed and visualized by (The mobile app Currently you have around IOOk users who are mostly based out of North America.
You have been tasked to optimize the architecture of the backend system to lower cost what would you recommend? (Choose 2 answers}
A. Create a new Amazon DynamoDB (able each day and drop the one for the previous day after its data is on Amazon 53.
B. Have the mobile app access Amazon DynamoDB directly instead of J50N files stored on Amazon 53.
C. Introduce an Amazon SQS queue to buffer writes to the Amazon DynamoDB table and reduce provisioned write throughput.
D. Introduce Amazon Elasticache Io cache reads from the Amazon DynamoDB table and reduce provisioned read throughput.
E. Write data directly into an Amazon Redshift cluster replacing both Amazon DynamoDB and Amazon 53.
Answer: B, D
Q14. A user has created an EBS volume with 1000 IOPS. What is the average IOPS that the user will get for most of the year as per EC2 SLA if the instance is attached to the EBS optimized instance?
A. 950
B. 990
C. 1000
D. 900
Answer: D
Explanation:
As per AWS SLA if the instance is attached to an EBS-Optimized instance, then the Provisioned IOPS volumes are designed to deliver within 10% of the provisioned IOPS performance 99.9% of the time in a given year. Thus, if the user has created a volume of 1000 IOPS, the user will get a minimum 900 IOPS 99.9% time of the year.
Reference: http://aws.amazon.com/ec2/faqs/
Q15. In Amazon EC2, partial instance-hours are billed .
A. per second used in the hour
B. per minute used
C. by combining partial segments into full hours
D. as full hours
Answer: D
Explanation:
Partial instance-hours are billed to the next hour. Reference: http://aws.amazon.com/ec2/faqs/