AWS-Solution-Architect-Associate Exam
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Q291. What does Amazon E|astiCache provide?
A. A senrice by this name doesn't exist. Perhaps you mean Amazon C|oudCache.
B. A virtual server with a huge amount of memory.
C. A managed In-memory cache service.
D. An Amazon EC2 instance with the Memcached software already pre-installed.
Answer: C
Q292. The AWS CIoudHSM service defines a resource known as a high-availability (HA) ,
which is a virtual partition that represents a group of partitions, typically distributed between several physical HSMs for high-availability.
A. proxy group
B. partition group
C. functional group
D. relational group
Answer: B
Explanation:
The AWS CIoudHSNI service defines a resource known as a high-availability (HA) partition group, which is a virtual partition that represents a group of partitions, typically distributed between several physical HSMs for high-availability.
Reference: http://docs.aws.amazon.com/cloudhsm/latest/userguide/configuring-ha.htmI
Q293. Your customer is willing to consolidate their log streams (access logs application logs security logs etc.) in one single system. Once consolidated, the customer wants to analyze these logs in real time based on heuristics. From time to time, the customer needs to validate heuristics, which requires going back to data samples extracted from the last 12 hours?
What is the best approach to meet your customer's requirements?
A. Send all the log events to Amazon SQS. Setup an Auto Scaling group of EC2 sewers to consume the logs and apply the heuristics.
B. Send all the log events to Amazon Kinesis develop a client process to apply heuristics on the logs
C. Configure Amazon Cloud Trail to receive custom logs, use EMR to apply heuristics the logs
D. Setup an Auto Scaling group of EC2 syslogd servers, store the logs on 53 use EMR to apply heuristics on the logs
Answer: B
Explanation:
The throughput of an Amazon Kinesis stream is designed to scale without limits via increasing the number of shards within a stream. However, there are certain limits you should keep in mind while using Amazon Kinesis Streams:
By default, Records of a stream are accessible for up to 24 hours from the time they are added to the stream. You can raise this limit to up to 7 days by enabling extended data retention.
The maximum size of a data blob (the data payload before Base64-encoding) within one record is 1 megabyte (MB).
Each shard can support up to 1000 PUT records per second.
For more information about other API level limits, see Amazon Kinesis Streams Limits.
Q294. A user has defined an AutoScaIing termination policy to first delete the instance with the nearest billing hour. AutoScaIing has launched 3 instances in the US-East-1A region and 2 instances in the US-East-1 B region. One of the instances in the US-East-1B region is running nearest to the billing hour. Which instance will AutoScaIing terminate first while executing the termination action?
A. Random Instance from US-East-1A
B. Instance with the nearest billing hour in US-East-1 B
C. Instance with the nearest billing hour in US-East-1A
D. Random instance from US-East-1B
Answer: C
Explanation:
Even though the user has configured the termination policy, before AutoScaIing selects an instance to terminate, it first identifies the Availability Zone that has more instances than the other Availability Zones used by the group. Within the selected Availability Zone, it identifies the instance that matches the specified termination policy.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/us-termination-policy.html
Q295. What is the data model of DynamoDB?
A. Since DynamoDB is schema-less, there is no data model.
B. "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
C. "TabIe", a collection of Items; "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
D. "Database", which is a set of "TabIes", which is a set of "Items", which is a set of "Attributes".
Answer: C
Explanation:
The data model of DynamoDB is: "TabIe", a collection of Items;
"Items", with Keys and one or more Attribute; "Attribute", with Name and Value.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModeI.html
Q296. Is the SQL Server Audit feature supported in the Amazon RDS SQL Server engine?
A. No
B. Yes
Answer: A
Q297. A user has created a CIoudFormation stack. The stack creates AWS services, such as EC2 instances, ELB, AutoScaIing, and RDS. While creating the stack it created EC2, ELB and AutoScaIing but failed to create RDS. What will C|oudFormation do in this scenario?
A. Rollback all the changes and terminate all the created services
B. It will wait for the user’s input about the error and correct the mistake after the input
C. CIoudFormation can never throw an error after launching a few services since it verifies all the steps before launching
D. It will warn the user about the error and ask the user to manually create RDS
Answer: A
Explanation:
AWS CIoudFormation is an application management tool which provides application modeling, deployment, configuration, management and related actMties. The AWS CIoudFormation stack is a collection of AWS resources which are created and managed as a single unit when AWS CIoudFormation instantiates a template. If any of the services fails to launch, C|oudFormation will rollback all the changes and terminate or delete all the created services.
Reference: http://aws.amazon.com/c|oudformation/faqs/
Q298. A user has created an application which will be hosted on EC2. The application makes calls to DynamoDB to fetch certain data. The application is using the DynamoDB SDK to connect with from the EC2 instance. Which of the below mentioned statements is true with respect to the best practice for security in this scenario?
A. The user should create an IAM user with DynamoDB access and use its credentials within the application to connect with DynamoDB
B. The user should attach an IAM role with DynamoDB access to the EC2 instance
C. The user should create an IAM role, which has EC2 access so that it will allow deploying the application
D. The user should create an IAM user with DynamoDB and EC2 access. Attach the user with the application so that it does not use the root account credentials
Answer: B
Explanation:
With AWS IAM a user is creating an application which runs on an EC2 instance and makes requests to
AWS, such as DynamoDB or S3 calls. Here it is recommended that the user should not create an IAM user and pass the user's credentials to the application or embed those credentials inside the application. Instead, the user should use roles for EC2 and give that role access to DynamoDB /S3. When the roles are attached to EC2, it will give temporary security credentials to the application hosted on that EC2, to connect with DynamoDB / S3.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_WorkingWithGroupsAndUsers.htmI
Q299. Is there a limit to how many groups a user can be in?
A. Yes for all users
B. Yes for all users except root
C. No
D. Yes unless special permission granted
Answer: A
Q300. You require the ability to analyze a large amount of data, which is stored on Amazon 53 using Amazon Elastic Map Reduce. You are using the cc2 8x large Instance type, whose CPUs are mostly idle during processing. Which of the below would be the most cost efficient way to reduce the runtime of the job?
A. Create more smaller flies on Amazon 53.
B. Add additional cc2 8x large instances by introducing a task group.
C. Use smaller instances that have higher aggregate 1/0 performance.
D. Create fewer, larger fi les on Amazon 53.
Answer: C