Aws Practice Test Flashcards

1
Q

VPC flow logs reporting use case 1

A

-publish to s3 in Apache format and analyze w Athena

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

Dual layer server-side encryption KMS

A

-data at rest
-dual layer better than single for sensitive data

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

S3 object lock in compliance mode

A

-prevents deletion including from root user
-retention period says how long can’t be deleted for

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

Kinesis data stream KCL (client library)

A

-consumes and writes to destination such as s3
-buffer is where data is aggregated before flushed. Improve performance

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

Kinesis - Partition random generated key

A

-Helps distribute data evenly across shards
-when WriteThroughputExceeded
-“some shards heavily used, and others idle”

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

Glacier vault lock policy

A

-protect s3 data from being deleted.

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

HDFS and scaling

A

-instance fleet =only auto scaling
-uniform instance = custom scaling support

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

-orchestration open source support

A

MWAA Apache airflow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

EMR security

A

-can set encryption for data in transit and rest

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

Sagemaker data wrangler

A

-visualize and prepare data
-can query data from Athena
-can connect to external dbs using jdbc

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

Athena and partitions. File from s3 manually deleted.

A

-in Athena if error, run drop partition command for stale partition

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

EBS volume size

A

-gp2= performance tied to size
-no custom iops

Gp3=independent iops
-cost effective for underused volumes
-maintain same performance

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

Aws glue catalog ResourceNumberLimitExceededException during version update

A

-increase quota “versions”
-delete older “versions”

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

Authenticating in redshift with 3rd party identity provider (idp)

A

-1st step register provider from within redshift
-redshift provides native IDP federation
-after register, can configure clusters to use idp for auth

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

DMS CDC troubleshooting

A

-CDCLatencySource= CloudWatch and determine if number is high
-CDCIncomingChanges = change events including inserts updates deletes

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

Redshift data sharing

A

-can’t share to AZ only REGIONS

17
Q

Glue crawler and table creation. Prevent multiple table creation?

A

-same s3 partition structure (prefix)
-file type (csv, parquet,etc)
-compression type
-schema

18
Q

Encrypting data catalog metadata and objects

A

-turn on encryption catalog settings entire catalog
-only supports symmetric customer managed keys

19
Q

Graviton instance and EMR

A

-best practice to use mix of on-demand and spot

20
Q

EMR storage ephemeral vs persistent what file system to use?

A

-HDFS for ephemeral which is lost when instance terminated
-s3 for persistent/ more permanent

21
Q

Standard-infrequent access s3

A

-for near real time at lower cost

22
Q

OpenSearch

A

-think full text search and analytics
-example of application images and ML extracting metadata values. Needing analyst search apps by name, date, or text.

23
Q

SQS queue

A

-dead-letter queue allows unprocessed msg to move here instead of being lost

24
Q

3 ways to increase performance when reading kinesis stream w/lambda

A

-test diff parallel factor settings
-lambda as consumer w increased fan out
-increase # of shards for stream

25
Q

Aws kms keys SSE-KMS server side

A

-can run redshift copy command to access s3

26
Q

Redshift SUPER column type

A

-stores nested json
-can use partiQL to query