AWS-Solution-Architect-Associate Exam
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Q11. What is an isolated database environment running in the cloud (Amazon RDS) called?
A. DB Instance
B. DB Sewer
C. DB Unit
D. DB Volume
Answer: A
Q12. What happens to the 1/0 operations while you take a database snapshot?
A. 1/0 operations to the database are suspended for a few minutes while the backup is in progress.
B. 1/0 operations to the database are sent to a Replica (if available) for a few minutes while the backup is in progress.
C. 1/0 operations will be functioning normally
D. 1/0 operations to the database are suspended for an hour while the backup is in progress
Answer: A
Q13. The _ service is targeted at organizations with multiple users or systems that use AWS products such as Amazon EC2, Amazon SimpIeDB, and the AWS Management Console.
A. Amazon RDS
B. AWS Integrity Management
C. AWS Identity and Access Management
D. Amazon EMR
Answer: C
Q14. 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
Q15. To serve Web traffic for a popular product your chief financial officer and IT director have purchased 10 ml large heavy utilization Reserved Instances (Rls) evenly spread across two availability zones:
Route 53 is used to deliver the traffic to an Elastic Load Balancer (ELB). After several months, the product grows even more popular and you need additional capacity As a result, your company purchases two C3.2x|arge medium utilization Rls You register the two c3 2xIarge instances with your ELB and quickly find that the ml large instances are at 100% of capacity and the c3 2xIarge instances have significant capacity that's unused Which option is the most cost effective and uses EC2 capacity most effectively?
A. Use a separate ELB for each instance type and distribute load to ELBs with Route 53 weighted round robin
B. Configure Autoscaning group and Launch Configuration with ELB to add up to 10 more on-demand ml large instances when triggered by Cloudwatch shut off c3 2xIarge instances
C. Route traffic to EC2 ml large and c3 2xIarge instances directly using Route 53 latency based routing and health checks shut off ELB
D. Configure ELB with two c3 2xiarge Instances and use on-demand Autoscaling group for up to two additional c3.2x|arge instances Shut on mi .|arge instances.
Answer: D
Q16. True or False: When you perform a restore operation to a point in time or from a DB Snapshot, a new DB Instance is created with a new endpoint.
A. FALSE
B. TRUE
Answer: B
Q17. When running my DB Instance as a MuIti-AZ deployment, can I use the standby for read or write operations?
A. Yes
B. Only with MSSQL based RDS
C. Only for Oracle RDS instances
D. No
Answer: D
Q18. A user is making a scalable web application with compartmentalization. The user wants the log module to be able to be accessed by all the application functionalities in an asynchronous way. Each module of the application sends data to the log module, and based on the resource availability it will process the logs. Which AWS service helps this functionality?
A. AWS Simple Queue Service.
B. AWS Simple Notification Service.
C. AWS Simple Workflow Service.
D. AWS Simple Email Service.
Answer: A
Explanation:
Amazon Simple Queue Service (SQS) is a highly reliable distributed messaging system for storing messages as they travel between computers. By using Amazon SQS, developers can simply move data between distributed application components. It is used to achieve compartmentalization or loose coupling. In this case all the modules will send a message to the logger queue and the data will be processed by queue as per the resource availability.
Reference: http://media.amazonwebservices.com/AWS_Building_FauIt_To|erant_AppIications.pdf
Q19. Which of the following statements is true of creating a launch configuration using an EC2 instance?
A. The launch configuration can be created only using the Query APIs.
B. Auto Scaling automatically creates a launch configuration directly from an EC2 instance.
C. A user should manually create a launch configuration before creating an Auto Scaling group.
D. The launch configuration should be created manually from the AWS CLI.
Answer: B
Explanation:
You can create an Auto Scaling group directly from an EC2 instance. When you use this feature, Auto Scaling automatically creates a launch configuration for you as well.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/create-Ic-with-instancelD.htmI
Q20. You are setting up your first Amazon Virtual Private Cloud (Amazon VPC) so you decide to use the VPC wizard in the AWS console to help make it easier for you. Which of the following statements is correct regarding instances that you launch into a default subnet via the VPC wizard?
A. Instances that you launch into a default subnet receive a public IP address and 10 private IP addresses.
B. Instances that you launch into a default subnet receive both a public IP address and a private IP address.
C. Instances that you launch into a default subnet don't receive any ip addresses and you need to define them manually.
D. Instances that you launch into a default subnet receive a public IP address and 5 private IP addresses.
Answer: B
Explanation:
Instances that you launch into a default subnet receive both a public IP address and a private IP address. Instances in a default subnet also receive both public and private DNS hostnames. Instances that you launch into a nondefault subnet in a default VPC don't receive a public IP address or a DNS hostname. You can change your subnet's default public IP addressing behavior.
Reference: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/default-vpc.html