Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AWS TSA 2022 > SNS, SQS, Kinesis & ActiveMQ > Flashcards

SNS, SQS, Kinesis & ActiveMQ Flashcards

1
Q

For standard queues, what is the default retention policy?

A

4 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

For standard queues, what is the maximum retention policy?

A

14 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the max size limit of an SQS message?

A

256KB

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Can we have duplicate messages in SQS?

A

Yes, it is at least once delivery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Will messages be in order?

A

It is best effort ordering

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do consumers get messages from a queue?

A

Consumers poll the queues and can receive a max of 10 messages at a a time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the main use case for SQS queues?

A

To decouple applications

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are 3 things to know about SQS encryption?

A
  • Use in-flight encryption using HTTPS API
  • At-rest encryption using KMS keys
  • Client side encryption if the client wants to encrypt/decrypt
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you control access to SQS?

A

Use IAM roles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When would I use SQS Queue Access Policies?

A

When you need cross account access

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is Message Visibility Timeout?

A

It is the time the consumer has to process the message before other consumers can see it again

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the default Visibility Timeout?

A

30 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do you increase the default Visibility Timeout?

A

Use the ChangeMessageVisibility API

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a Delay Queue?

A

It is a queue that prevents consumers seeing messages until a time has elapsed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the default time for Delay Queues?

A

It is 0 seconds - so they will see it straight away

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the maximum time I can set in a Delay Queue?

A

15 minutes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How do I override the default time in a Delay Queue?

A

Use the DelaySeconds parameter

18
Q

What is long polling?

A

It is when a consumer waits for messages in the queue

19
Q

What is the advantage of long polling?

A

Reduces the amount of API calls your app makes to SQS

20
Q

What can the wait time be for long polling?

A

It can be between 1 and 20 seconds, but 20 seconds is preferred

21
Q

What are the 2 ways to enable Long Polling?

A
  • At the queue level

- Via API using WaitTimeSeconds

22
Q

What is the SQS Temporary Queue Client?

A

It allows you to leverage virtual queues instead of creating/deleting SQS queues

23
Q

What are the 6 subscriber options for SNS?

A
  • SQS
  • HTTP/HTTPS
  • Lambda
  • Emails
  • SMS Messages
  • Mobile Notifications
24
Q

What are the 3 encryption options for SNS?

A
  • In-flight encryption using HTTPS API
  • At-rest encryption using KMS keys
  • Client side encryption if client wants to handle encrypt/decrypt
25
Q

What is the SNS + SQS fan out strategy?

A

Its when you push once to SNS, receive in all SQS queues that are subscribers

26
Q

Does a subscriber receive all messages from SNS?

A

If there is no Message Filtering setup, they will receive all messages

27
Q

What is Kinesis used for?

A

It is for collecting, processing and analyzing real-time streaming data

28
Q

What are the 4 types of Kinesis?

A
  • Kinesis Data Streams
  • Kinesis Data Firehose
  • Kinesis Data Analytics
  • Kinesis Video Streams
29
Q

What 2 things make up a Record in Kinesis?

A
  • Partition Key

- Data Blob

30
Q

How big can a data blob be in a Kinesis Message?

A

Up to 1MB

31
Q

How much can a shard process in Kinesis?

A
  • 1 MB per second

- 1000 messages per second

32
Q

Is the Kinesis Record the same when the Consumer picks it up?

A

It has an additional key, the Sequence Number, along with the Partition Key and the Data Blob

33
Q

What are the 2 types of Kinesis Consumer?

A
  • Shared

- Enhanced

34
Q

How much can the shared consumer process?

A

2MB per second per shard - ALL consumers

35
Q

How much can an enhanced consumer process?

A

2MB per second per shard per consumer

36
Q

What is the default data retention in a Kinesis shard?

A

1 day

37
Q

What is the max data retention in a Kinesis shard?

A

365 days

38
Q

Can we delete Kinesis data after it is written?

A

No, its immutable

39
Q

When Kinesis Firehouse performsBatch Writes, what are the 3 possible AWS destinations?

A
  • AWS S3
  • AWS RedShift
  • AWS ElasticSearch
40
Q

What is Kinesis Data Analytics used for?

A

To perform real-time analytics on Kinesis Streams using SQL

41
Q

What is Amazon MQ?

A

It is a managed ApacheMQ

AWS TSA 2022 (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions