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Q41. A user is trying to configure access with S3. Which of the following options is not possible to provide access to the S3 bucket / object?

A. Define the policy for the IAM user

B. Define the ACL for the object

C. Define the policy for the object

D. Define the policy for the bucket 

Answer: C

Explanation:

Amazon S3 offers access policy options broadly categorized as resource-based policies and user policies.

Access policies, such as ACL and resource policy can be attached to the bucket. With the object the user can only have ACL and not an object policy. The user can also attach access policies to the IAM users in the account. These are called user policies.

Reference:       http://docs.aws.amazon.com/AmazonS3/latest/dev/s3-access-control.html

Q42. A user has enabled the automated backup, but not specified the backup window. What will RDS do in this case?

A. Will throw an error on instance launch

B. RDS will take 3 AM — 3:30 AM as the default window

C. RDS assigns a random time period based on the region

D. Will not allow to launch a DB instance 

Answer: C

Explanation:

If the user does not specify a preferred backup window while enabling an automated backup, Amazon RDS assigns a default 30-minute backup window which is selected at random from an 8-hour block of

time per region. Reference:

http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI

Q43. A user is planning to use EBS for his DB requirement. The user already has an EC2 instance running in the VPC private subnet. How can the user attach the EBS volume to a running instance?

A. The user must create EBS within the same VPC and then attach it to a running instance.

B. The user can create EBS in the same zone as the subnet of instance and attach that EBS to instance.

C. It is not possible to attach an EBS to an instance running in VPC until the instance is stopped.

D. The user can specify the same subnet while creating EBS and then attach it to a running instance. 

Answer: B

Explanation:

A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. The user can create subnets as per the requirement within a VPC. The VPC is always specific to a region. The user can create a VPC which can span multiple Availability Zones by adding one or more subnets in each Availability Zone.

The instance launched will always be in the same availability zone of the respective subnet. When creating an EBS the user cannot specify the subnet or VPC. However, the user must create the EBS in the same zone as the instance so that it can attach the EBS volume to the running instance.

Reference:        http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.htm|#VPCSubnet

Q44. How long can you keep your Amazon SQS messages in Amazon SQS queues?

A. From 120 secs up to 4 weeks

B. From 10 secs up to 7 days

C. From 60 secs up to 2 weeks

D. From 30 secs up to 1 week 

Answer: C

Explanation:

The SQS message retention period is configurable and can be set anywhere from 1 minute to 2 weeks. The default is 4 days and once the message retention limit is reached your messages will be automatically deleted. The option for longer message retention provides greater filexibility to allow for longer intervals between message production and consumption.

Reference: https://aws.amazon.com/sqs/faqs/

Q45. Is there a limit to how much throughput you can get out of a single table in DynamoDB?

A. Yes, not more than 1,000 writes/second or 1,000 reads/second

B. No

C. Yes, not more than 10,000 writes/second or 10,000 reads/second

D. No, but If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.

Answer:

Explanation:

In DynamoDB, you can increase the throughput you have provisioned for your table using UpdateTabIe API or in the AWS Management Console. If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.

Reference: http://aws.amazon.com/dynamodb/

Q46. A user has created a blank EBS volume in the US-East-1 region. The user is unable to attach the volume to a running instance in the same region. What could be the possible reason for this?

A. The instance must be in a running state. It is required to stop the instance to attach volume

B. The AZ for the instance and volume are different

C. The instance is from an instance store backed AMI

D. The instance has enabled the volume attach protection 

Answer: B

Explanation:

An EBS volume provides persistent data storage. The user can attach a volume to any instance provided they are both in the same AZ. Even if they are in the same region but in a different AZ, it will not be able to attach the volume to that instance.

Reference:       http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.htmI

Q47. When you create a table with a hash-and-range key, you must define one or more secondary indexes on that table.

A. False, hash-range key is another name for secondary index

B. False, it is optional

C. True

D. False, when you have Hash-Range key you cannot define Secondary index 

Answer: B

Explanation:

When you create a table with a hash-and-range key in DynamoDB, you can also define one or more secondary indexes on that table.

Reference:       http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LSI.htmI

Q48. A user has created an EBS instance in the US-East-1a AZ. The user has a volume of 30 GB in the US-East-1 b zone. How can the user attach the volume to an instance?

A. Since both the volume and the instance are in the same region, the user can attach the volume

B. Use the volume migrate function to move the volume from one AZ to another and attach to the instance

C. Take a snapshot of the volume. Create a new volume in the USEast-1a and attach that to the instance

D. Use the volume replicate function to create a new volume in the US-East-1a and attach that to the volume

Answer:

Explanation:

If an EBS volume is not in the same AZ of an EC2 instance, it cannot be attached to the instance. The only option is to take a snapshot of the volume and create a new volume in the instance’s AZ. Reference:       http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.htmI

Q49. A user has set an IAM policy where it allows all requests if a request from IP 10.10.10.1/32. Another policy allows all the requests between 5 PM to 7 PM. What will happen when a user is requesting access from IP 10.10.10.1/32 at 6 PM?

A. IAM will throw an error for policy conflict

B. It is not possible to set a policy based on the time or IP

C. It will deny access

D. It will allow access 

Answer: D

Explanation:

With regard to IAM, when a request is made, the AWS service decides whether a given request should be allowed or denied. The evaluation logic follows these rules:

By default, all requests are denied. (In general, requests made using the account credentials for resources in the account are always allowed.)

An explicit allow policy overrides this default. An explicit deny policy overrides any allows. Reference:

http://docs.aws.amazon.com/IAM/latest/UserGuide/AccessPoIicyLanguage_EvaIuationLogic.htmI

Q50. Regarding Amazon SQS, what happens if there is no actMty against a queue for more than 30 consecutive days?

A. Your account will be suspended

B. The queue may be deleted

C. Nothing

D. The queue will be deleted 

Answer: B

Explanation:

AWS reserve the right to delete a queue if none of the following requests have been issued against the queue for more than 30 consecutive days:

SendMessage ReceiveMessage DeIeteMessage GetQueueAttributes SetQueueAttributes

You should design your application with this in mind. Reference: https://aws.amazon.com/sqs/faqs/

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