Free Aws Certified Solutions Architect Associate certification Sample Online Test for Practice Part 3 Infibee.com

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Instructions

Total Questions 20
Each question carry 1 mark
Must answer all the questions (otherwise report card will not be generated)
If you dont want to take a test, simply click the check answers button and view all the answers with explanations
Do Not Refresh the Page
No Time Limit
Good Luck :)

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1. Your company stores documents in Amazon Simple Storage Service (Amazon S3), but it wants to minimize cost. Most documents are used actively for only about a month, then much less frequently. However, all data needs to be available within minutes when requested. How can you meet these requirements?

A.
Migrate the data to Amazon S3 Reduced Redundancy Storage (RRS) after 30 days.
B.
Migrate the data to Amazon Glacier after 30 days.
C.
Migrate the data to Amazon S3 Standard – Infrequent Access (IA) after 30 days.
D.
Turn on versioning, then migrate the older version to Amazon Glacier.

Correct Answers :

[C]

Explanation :

Migrating the data to Amazon S3 Standard-IA after 30 days using a lifecycle policy is correct. Amazon S3 RRS should only be used for easily replicated data, not critical data. Migration to Amazon Glacier might minimize storage costs if retrievals are infrequent, but documents would not be available in minutes when needed.

2. How is data stored in Amazon Simple Storage Service (Amazon S3) for high durability?

A.
Data is automatically replicated to other regions.
B.
Data is automatically replicated within a region.
C.
Data is replicated only if versioning is enabled on the bucket.
D.
Data is automatically backed up on tape and restored if needed.

Correct Answers :

[B]

Explanation :

Data is automatically replicated within a region. Replication to other regions and versioning are optional. Amazon S3 data is not backed up to tape.

3. Based on the following Amazon Simple Storage Service (Amazon S3) URL, which one of the following statements is correct?
https://bucket1.abc.com.s3.amazonaws.com/folderx/myfile.doc

A.
The object “myfile.doc” is stored in the folder “folderx” in the bucket “bucket1.abc.com.”
B.
The object “myfile.doc” is stored in the bucket “bucket1.abc.com.”
C.
The object “folderx/myfile.doc” is stored in the bucket “bucket1.abc.com.”
D.
The object “myfile.doc” is stored in the bucket “bucket1.”

Correct Answers :

[C]

Explanation :

In a URL, the bucket name precedes the string “s3.amazonaws.com/,” and the object key is everything after that. There is no folder structure in Amazon S3.

4. To have a record of who accessed your Amazon Simple Storage Service (Amazon S3) data and from where, you should do what?

A.
Enable versioning on the bucket.
B.
Enable website hosting on the bucket.
C.
Enable server access logs on the bucket.
D.
Create an AWS Identity and Access Management (IAM) bucket policy.
E.
Enable Amazon CloudWatch logs.

Correct Answers :

[C]

Explanation :

Amazon S3 server access logs store a record of what requestor accessed the objects in your bucket, including the requesting IP address.

5. What are some reasons to enable cross-region replication on an Amazon Simple Storage Service (Amazon S3) bucket? (Choose 2 answers)

A.
You want a backup of your data in case of accidental deletion.
B.
You have a set of users or customers who can access the second bucket with lower latency.
C.
For compliance reasons, you need to store data in a location at least 300 miles away from the first region.
D.
Your data needs at least five nines of durability.

Correct Answers :

[B, C]

Explanation :

Cross-region replication can help lower latency and satisfy compliance requirements on distance. Amazon S3 is designed for eleven nines durability for objects in a single region, so a second region does not significantly increase durability. Crossregion replication does not protect against accidental deletion.

6. Your company requires that all data sent to external storage be encrypted before being sent. Which Amazon Simple Storage Service (Amazon S3) encryption solution will meet this requirement?

A.
Server-Side Encryption (SSE) with AWS-managed keys (SSE-S3)
B.
SSE with customer-provided keys (SSE-C)
C.
Client-side encryption with customer-managed keys
D.
Server-side encryption with AWS Key Management Service (AWS KMS) keys (SSEKMS)

Correct Answers :

[C]

Explanation :

If data must be encrypted before being sent to Amazon S3, client-side encryption must be used.

7. You have a popular web application that accesses data stored in an Amazon Simple Storage Service (Amazon S3) bucket. You expect the access to be very read-intensive, with expected request rates of up to 500 GETs per second from many clients. How can you increase the performance and scalability of Amazon S3 in this case?

A.
Turn on cross-region replication to ensure that data is served from multiple locations.
B.
Ensure randomness in the namespace by including a hash prefix to key names.
C.
Turn on server access logging.
D.
Ensure that key names are sequential to enable pre-fetch.

Correct Answers :

[B]

Explanation :

Amazon S3 scales automatically, but for request rates over 100 GETS per second, it helps to make sure there is some randomness in the key space. Replication and logging will not affect performance or scalability. Using sequential key names could have a negative effect on performance or scalability.

8. What is needed before you can enable cross-region replication on an Amazon Simple Storage Service (Amazon S3) bucket? (Choose 2 answers)

A.
Enable versioning on the bucket.
B.
Enable a lifecycle rule to migrate data to the second region.
C.
Enable static website hosting.
D.
Create an AWS Identity and Access Management (IAM) policy to allow Amazon S3 to replicate objects on your behalf.

Correct Answers :

[A, D]

Explanation :

You must enable versioning before you can enable cross-region replication, and Amazon S3 must have IAM permissions to perform the replication. Lifecycle rules migrate data from one storage class to another, not from one bucket to another. Static website hosting is not a prerequisite for replication.

9. Your company has 100TB of financial records that need to be stored for seven years by law. Experience has shown that any record more than one-year old is unlikely to be accessed. Which of the following storage plans meets these needs in the most cost efficient manner?

A.
Store the data on Amazon Elastic Block Store (Amazon EBS) volumes attached to t2.micro instances.
B.
Store the data on Amazon Simple Storage Service (Amazon S3) with lifecycle policies that change the storage class to Amazon Glacier after one year and delete the object after seven years.
C.
Store the data in Amazon DynamoDB and run daily script to delete data older than seven years.
D.
Store the data in Amazon Elastic MapReduce (Amazon EMR).

Correct Answers :

[B]

Explanation :

Amazon S3 is the most cost effective storage on AWS, and lifecycle policies are a simple and effective feature to address the business requirements.

10. Amazon Simple Storage Service (S3) bucket policies can restrict access to an Amazon S3 bucket and objects by which of the following? (Choose 3 answers)

A.
Company name
B.
IP address range
C.
AWS account
D.
Country of origin
E.
Objects with a specific prefix

Correct Answers :

[B, C, E]

Explanation :

Amazon S3 bucket policies cannot specify a company name or a country or origin, but they can specify request IP range, AWS account, and a prefix for objects that can be accessed.

11. Amazon Simple Storage Service (Amazon S3) is an eventually consistent storage system. For what kinds of operations is it possible to get stale data as a result of eventual consistency? (Choose 2 answers)

A.
GET after PUT of a new object
B.
GET or LIST after a DELETE
C.
GET after overwrite PUT (PUT to an existing key)
D.
DELETE after PUT of new object

Correct Answers :

[B, C]

Explanation :

Amazon S3 provides read-after-write consistency for PUTs to new objects (new key), but eventual consistency for GETs and DELETEs of existing objects (existing key).

12. What must be done to host a static website in an Amazon Simple Storage Service (Amazon S3) bucket? (Choose 3 answers)

A.
Configure the bucket for static hosting and specify an index and error document.
B.
Create a bucket with the same name as the website.
C.
Enable File Transfer Protocol (FTP) on the bucket.
D.
Make the objects in the bucket world-readable.
E.
Enable HTTP on the bucket.

Correct Answers :

[A, B, D]

Explanation :

A, B, and D are required, and normally you also set a friendly CNAME to the bucket URL. Amazon S3 does not support FTP transfers, and HTTP does not need to be enabled.

13. You have valuable media files hosted on AWS and want them to be served only to authenticated users of your web application. You are concerned that your content could be stolen and distributed for free. How can you protect your content?

A.
Use static web hosting.
B.
Generate pre-signed URLs for content in the web application.
C.
Use AWS Identity and Access Management (IAM) policies to restrict access
D.
Use logging to track your content.

Correct Answers :

[B]

Explanation :

Pre-signed URLs allow you to grant time-limited permission to download objects from an Amazon Simple Storage Service (Amazon S3) bucket. Static web hosting generally requires world-read access to all content. AWS IAM policies do not know who the authenticated users of the web app are. Logging can help track content loss, but not prevent it.

14. Amazon Glacier is well-suited to data that is which of the following? (Choose 2 answers)

A.
Is infrequently or rarely accessed
B.
Must be immediately available when needed
C.
Is available after a three- to five-hour restore period
D.
Is frequently erased within 30 days

Correct Answers :

[A, C]

Explanation :

Amazon Glacier is optimized for long-term archival storage and is not suited to data that needs immediate access or short-lived data that is erased within 90 days.

15. Which statements about Amazon Glacier are true? (Choose 3 answers)

A.
Amazon Glacier stores data in objects that live in archives.
B.
Amazon Glacier archives are identified by user-specified key names.
C.
Amazon Glacier archives take three to five hours to restore.
D.
Amazon Glacier vaults can be locked.
E.
Amazon Glacier can be used as a standalone service and as an Amazon S3 storage class.

Correct Answers :

[C, D, E]

Explanation :

Amazon Glacier stores data in archives, which are contained in vaults. Archives are identified by system-created archive IDs, not key names.

16. Your web application needs four instances to support steady traffic nearly all of the time. On the last day of each month, the traffic triples. What is a cost-effective way to handle this traffic pattern?

A.
Run 12 Reserved Instances all of the time.
B.
Run four On-Demand Instances constantly, then add eight more On-Demand Instances on the last day of each month.
C.
Run four Reserved Instances constantly, then add eight On-Demand Instances on the last day of each month.
D.
Run four On-Demand Instances constantly, then add eight Reserved Instances on the last day of each month.

Correct Answers :

[C]

Explanation :

Reserved Instances provide cost savings when you can commit to running instances full time, such as to handle the base traffic. On-Demand Instances provide the flexibility to handle traffic spikes, such as on the last day of the month.

17. Your order-processing application processes orders extracted from a queue with two Reserved Instances processing 10 orders/minute. If an order fails during processing, then it is returned to the queue without penalty. Due to a weekend sale, the queues have several hundred orders backed up. While the backup is not catastrophic, you would like to drain it so that customers get their confirmation emails faster. What is a cost-effective way to drain the queue for orders?

A.
Create more queues.
B.
Deploy additional Spot Instances to assist in processing the orders.
C.
Deploy additional Reserved Instances to assist in processing the orders.
D.
Deploy additional On-Demand Instances to assist in processing the orders.

Correct Answers :

[B]

Explanation :

Spot Instances are a very cost-effective way to address temporary compute needs that are not urgent and are tolerant of interruption. That’s exactly the workload described here. Reserved Instances are inappropriate for temporary workloads. On-Demand Instances are good for temporary workloads, but don’t offer the cost savings of Spot Instances. Adding more queues is a non-responsive answer as it would not address the problem.

18. Which of the following must be specified when launching a new Amazon Elastic Compute Cloud (Amazon EC2) Windows instance? (Choose 2 answers)

A.
The Amazon EC2 instance ID
B.
Password for the administrator account
C.
Amazon EC2 instance type
D.
Amazon Machine Image (AMI)

Correct Answers :

[C, D]

Explanation :

The Amazon EC2 instance ID will be assigned by AWS as part of the launch process. The administrator password is assigned by AWS and encrypted via the public key. The instance type defines the virtual hardware and the AMI defines the initial software state. You must specify both upon launch.

19. You have purchased an m3.xlarge Linux Reserved instance in us-east-1a. In which ways can you modify this reservation? (Choose 2 answers)

A.
Change it into two m3.large instances.
B.
Change it to a Windows instance.
C.
Move it to us-east-1b.
D.
Change it to an m4.xlarge.

Correct Answers :

[A, C]

Explanation :

You can change the instance type only within the same instance type family, or you can change the Availability Zone. You cannot change the operating system nor the instance type family.

20. Your instance is associated with two security groups. The first allows Remote Desktop Protocol (RDP) access over port 3389 from Classless Inter-Domain Routing (CIDR) block 72.14.0.0/16. The second allows HTTP access over port 80 from CIDR block 0.0.0.0/0. What traffic can reach your instance?

A.
RDP and HTTP access from CIDR block 0.0.0.0/0
B.
No traffic is allowed.
C.
RDP and HTTP traffic from 72.14.0.0/16
D.
RDP traffic over port 3389 from 72.14.0.0/16 and HTTP traffic over port 80 from 0.0.00/0

Correct Answers :

[D]

Explanation :

When there are multiple security groups associated with an instance, all the rules are aggregated.

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