Serverless and Application Services

Question 1

uses events to trigger and communicate between decoupled services and is common in modern applications built with microservices

Answer 1

Event-Driven Architecture

Question 2

compute service that lets you run code without provisioning or managing servers on a high-availability compute infrastructure and performs all of the administration of the compute resources

Answer 2

Lambda

Question 3

piece of code that lambda runs

Answer 3

Lambda Function

Question 4

you are only billed for the duration that a function runs

Answer 4

true

Question 5

Lambda functions can run for up to 9000 seconds (15 minutes)

Answer 5

True

Question 6

Anything involving permissions with lambda involves an execution role attached to a specific function

Answer 6

True

Question 7

are lambda functions givien public networking by default? Can they access public AWS services and the public internet?

Answer 7

yes

Question 8

Does lambda have access to VPC based services?

Answer 8

No, public IPs need to be provided and security controls must allow

Question 9

Lambda functions running in a vpc obey all VPC networking rules

Answer 9

True

Question 10

attached to lambda functions which control the permissions the lambda function receives

Answer 10

Execution Roles

Question 11

controls what services and accounts can invoke lambda functions

Answer 11

Lambda Resource Policy

Question 12

Does lambda use CloudWatch?

Answer 12

Yes

Question 13

Where logs are stored from lambda executions

Answer 13

CloudWatch Logs

Question 14

Does storing logs in CloudWatch Logs require permissions

Answer 14

Yes, via Execution Role

Question 15

Lambda runs the function and waits for a response. When the function completes, Lambda returns the response from the function’s code with additional data, such as the version of the function that was invoked

Answer 15

Synchronous Invocation

Question 16

When you invoke a function, you don’t wait for a response from the function code. You hand off the event to Lambda and Lambda handles the rest

Answer 16

Asynchronous Invocation

Question 17

Invocation of a function usually done by a human

Answer 17

Synchronous Invocation

Question 18

Invocation of a function usually done by AWS services

Answer 18

Asynchronous Invocation

Question 19

Term for when running a lambda function and the outcome will be the same no matter how many times it is invoked

Answer 19

Idempotent

Question 20

New feature where successful or failed events can be sent

Answer 20

Destination

Question 21

Lambda resource that reads from an event source and invokes a Lambda function processes items from a stream or queue in services that don’t invoke Lambda functions directly

Answer 21

event source mappings

Question 22

Permissions from the lambda execution roles are used by the event source mapping to interact with the event source

Answer 22

True

Question 23

Does lambda have versions?

Answer 23

Yes

Question 24

the environment a lambda function runs in is called an

Answer 24

execution context

Question 25

full creation and configuration of a lambda environment

Answer 25

Cold Start

Question 26

When the same execution context is reused its called a

Answer 26

warm start

Question 27

AWS will create and keep contexts warm and ready to use is called

Answer 27

Provisioned Concurrency

Question 28

coordinates the sending and delivery of messages through topics

Answer 28

Simple Notification Service (SNS)

Question 29

who receives messages within SNS

Answer 29

Subscribers

Question 30

is SNS capable of server-side encryption?

Answer 30

Yes

Question 31

Can SNS be used cross-account?

Answer 31

Yes

Question 32

serverless orchestration service that lets you integrate with AWS Lambda functions and other AWS services to build business-critical applications

Answer 32

AWS Step Function

Question 33

workflows have exactly-once workflow execution and can run for up to one year

Answer 33

Standard workflows

Question 34

workflows have at-least-once workflow execution and can run for up to five minutes

Answer 34

Express workflows

Question 35

fully managed service developers use to create, publish, maintain, monitor, and secure APIs at any scale. Acts as the "front door" for applications to access data, business logic, or functionality from your backend services

Answer 35

API Gateway

Question 36

error stating invalid request on the client side

Answer 36

400 error code client error

Question 37

error state valid request backend issue

Answer 37

500 error code server error

Question 38

bad request error

Answer 38

400

Question 39

access denied error

Answer 39

403

Question 40

api gateway can throttle error

Answer 40

429

Question 41

bad gateway exception error

Answer 41

502

Question 42

service unavailable error

Answer 42

503

Question 43

integration failure error

Answer 43

504

Question 44

mesages delivered at least once

Answer 44

standard sqs queue

Question 45

messages delievered exactly once and retains exact order

Answer 45

FIFO queue

Question 46

period of time during which Amazon SQS prevents all consumers from receiving and processing the message

Answer 46

Visibility Timeout

Question 47

messages that are added to the queue will start off in an invisible state

Answer 47

delay queue

Question 48

queues allow for messages which are causing repeated processing errors to be moved

Answer 48

Dead letter queue

Question 49

collect and process large streams of data records in real time

Answer 49

Kinesis Data Streams

Question 50

used for decoupling and asynchronous communications

Answer 50

SQS

Question 51

designed for huge-scale ingestion with multiple consumers of real-time data requires an external consumer to store the records in a data store

Answer 51

Kinesis Data Streams

Question 52

fully managed service for delivering NEAR real-time streaming data to destinations such as Amazon Simple Storage Service (Amazon S3)

Answer 52

Amazon Kinesis Data Firehose

Question 53

Can data firehose use lambda for data transformation

Answer 53

Yes

Question 54

Amazon Simple Storage Service (Amazon S3), Amazon Redshift, Amazon OpenSearch Service, Amazon OpenSearch Serverless, Splunk, and any custom HTTP endpoint or HTTP endpoints can all be accepted by Kinesis Data Firehose

Answer 54

True

Question 55

serverless service that enables you to analyze your streaming data, acquire actionable insights, and respond to events in real-time using SQL

Answer 55

Amazon Kinesis Data Analytics

Question 56

service that securely streams video from connected devices or sources to AWS

Answer 56

Amazon Kinesis Video Streams

Question 57

serverless service that is primarily used for extract, transform, and load workloads or ETL

Answer 57

AWS Glue

Question 58

Persistent metadata about data sources in region

Answer 58

Data catalog

Question 59

open source messsage broke based on manage apache ActiveMQ

Answer 59

Amazon MQ