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.๐’œ๐’ฒ๐’ฎ ๐’ž๐‘’๐“‡๐“‰๐’พ๐’ป๐’พ๐‘’๐’น ๐’Ÿ๐‘’๐“‹๐‘’๐“๐‘œ๐“…๐‘’๐“‡ > Practice Exam 3 > Flashcards

Practice Exam 3 Flashcards

1
Q

In EB, what is file which can be included at the root of your application source bundle to specify the environment name, solution stack and environment links?

A

env.yaml

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2
Q

How to get rid of users SESSION DATA stored in a DynamoDB table?

A

Use TTL, itโ€™s free!

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3
Q

How is the traffic shifted to the new version when using the linear deployment configuration in CodeDeploy?

A

The traffic will be shifted in equal increments with an equal number of minutes between each increments.

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4
Q

How do you calculate the total sampled requests per second by X-Ray?

A

reservoir size + ( (incoming requests per second - reservoir size) * fixed rate)

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5
Q

When do you usually use the GetSessionToken API?

A

When you want to use MFA to protect programmatic calls to specific AWS API Operations like EC2 StopInstances

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6
Q

What does AWS WAF stand for?

A

AWS Web Application Firewall

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7
Q

How to get more granular timing information in X-Ray segments?

A

Use subsegments

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8
Q

What does the x-amz-server-side-encryption-customer-algorithm header specifies?

A

The encryption algorithm, the value must be โ€œAES256โ€

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9
Q

What does the x-amz-server-side-encryption-customer-key header specefies?

A

The 256-bit, base64-encoded encryption key for Amazon S3 to use to encrypt or decrypt your data

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10
Q

What does the x-amz-server-side-encryption-customer-key-MD5 header specefies?

A

The base64-encoded 128-bit MD5 digest of the encryption key according to RFC 1321
(Amazon S3 uses this header for a message integrity check to ensure the encryption key was transmitted without error)

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11
Q

Each subnet in your VPC must be associated with a ___________

A

route table

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12
Q

How many route tables can a subnet be associated with at a time?

A

Only one

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13
Q

Can you associate multiple subnets to the same route table?

A

YES

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14
Q

Can AWS Lambda compute platform use in-place deployment type?

A

No

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15
Q

How can you increase/decrease the capacity of a Kinesis stream?

A

By splitting/merging shards

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16
Q

What are Lambda layers?

A

ZIP archive that contains libraries, a custom runtime, or other dependencies

17
Q

What do Lambda layers allow you to do?

A

Use libraries in your function without needing to include them in your deployment package

18
Q

How many layers can a function use at a time?

A

Up to 5

19
Q

What is the max size of an unzipped Lambda function code + all of its layers?

A

250MB

20
Q

What is the minimum amount of concurrent execution that the unreserved concurrency pool in Lambda enforces?

A

100

21
Q

What is an โ€œIAM principalโ€ in AWS?

A

Person or application

22
Q

What does the GetTraceSummaries API returns?

A

List of trace IDs of the application

23
Q

What does the BatchGetTraces API returns?

A

List of traces specified by ID

24
Q

What is a DynamoDB item atomic counter?

A

A numeric value that increments on every UpdateItem call

25
Q

What happens with inferred segments assigned to AWS services but those are instrumented and provide their own segments?

A

The inferred segments get replaced by the segments received from the instrumented services.

26
Q

What do X-Ray inferred segments allow to see?

A

All of your downstream dependencies even if they donโ€™t support tracing, or are external

27
Q

Can you define arbitrary subsegments to instrument specific functions or lines of code in your application?

A

Yes!

28
Q

What does X-Ray uses to generate inferred segments?

A

Subsegments

29
Q

What are AWS and AWS_PROXY integrations used for in API Gateway?

A

Integrating with Lambda function

30
Q

What is the AssumeRoleWithWebIdentity API used for?

A

Returning a set of temporary security credentials for federated users who are authenticated through public identity providers such as Amazon, Facebook, Google, or OpenID

31
Q

What is the AssumeRoleWithSAML API used for?

A

Returning a set of temporary security credentials for users who have been authenticated via a SAML authentication response

32
Q

Does GetFederationToken support MFA?

A

No

33
Q

Is โ€œx-amz-server-side-encryptionโ€ header used in SSE-C?

A

No

34
Q

Why do you have to delete the SG of the RDS db in the EB environment in order to delete it?

A

Because the SG is dependent on the env, so if the SG is still being used, the env canโ€™t be deleted

35
Q

Does AssumeRoleWithSAML support MFA?

A

No

36
Q

When can you define a task placement strategy?

A

When running a task or creating a new service

.๐’œ๐’ฒ๐’ฎ ๐’ž๐‘’๐“‡๐“‰๐’พ๐’ป๐’พ๐‘’๐’น ๐’Ÿ๐‘’๐“‹๐‘’๐“๐‘œ๐“…๐‘’๐“‡ (26 decks)

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