Section 20: Serverless Overviews from a Solution Architect Perspective

Question 1

What is the maximum execution time for a Lambda function?

Answer 1

900 seconds (15 minutes)

Question 2

How much space can your environment variables take up in a Lambda function?

Answer 2

4KB

Question 3

What is the maximum memory allocation for a Lambda function execution?

Answer 3

128MB - 10GB (in 1MB increments)

Question 4

This service is a serverless, event-driven compute service that lets you run code for virtually any type of application or backend service without provisioning or managing servers

Answer 4

AWS Lambda

Question 5

What are the two types of Edge Functions provided by AWS CloudFront?

Answer 5

CloudFront Functions and Lamda@Edge

Question 6

This service is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability

Answer 6

DynamoDB

Question 7

What is the maximum size of an item in a DynamoDB?

Answer 7

400KB

Question 8

What service could you use if you need a database that allows for a rapidly evolving schema?

Answer 8

DynamoDB

Question 9

DynamoDB Read/Write Capacity Mode that requires the user to specify the number of reads/writes per second - good for predictable workloads

Answer 9

Provisioned Mode

Question 10

DynamoDB Read/Write Capacity Mode that enables read/writes to automatically scale up/down with your workloads - good for unpredictable workloads

Answer 10

On-Demand Mode

Question 11

A fully managed, highly available, in-memory cache for Amazon DynamoDB that delivers up to a 10 times performance improvement—from milliseconds to microseconds—even at millions of requests per second.

Answer 11

Amazon DynamoDB Accelerator (DAX)

Question 12

DynamoDB feature that captures a time-ordered sequence of item-level modifications in any DynamoDB table and stores this information in a log for up to 24 hours.

Answer 12

DynamoDB Streams

Question 13

DynamoDB feature that replicates your DynamoDB tables automatically across your choice of AWS Regions

Answer 13

DynamoDB Global Tables

Question 14

This DynamoDB feature underpins DynamoDB Global Tables

Answer 14

DynamoDB Streams

Question 15

A fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale.

Answer 15

Amazon API Gateway

Question 16

API Gateway endpoint type that routes requests through the CloudFront Edge locations to improve latency

Answer 16

Edge-Optimized

Question 17

API Gateway endpoint type that is typically used when clients that will be using the API Gateway are in the same region

Answer 17

Regional

Question 18

API Gateway endpoint type that can only be accessed from your VPC using an interface VPC (ENI)

Answer 18

Private

Question 19

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

Answer 19

AWS Step Functions

Question 20

True/False - Before you create a DynamoDB table, you need to provision the EC2 instance the DynamoDB table will be running on

Answer 20

False - DynamoDB is serverless

Question 21

True/False - Read Capacity Units (RCU) and Write Capacity Units (WCU) for a DynamoDB can be adjusted independently

Answer 21

True - RCU and WCU are decoupled

Question 22

What service can provide an in memory cache for DynamoDB that can help you avoid ProvisionedThroughputExceededExceptions exceptions during periods of high traffic?

Answer 22

DynamoDB Accelerator (DAX)

Question 23

True/False - When you are using an Edge-Optimized API Gateway, your API Gateway lives in CloudFront Edge Locations across all AWS Regions.

Answer 23

False - API requests will be routed to the nearest CloudFront Edge Location, but the API Gateway itself still lives in one AWS Region

Question 24

Which AWS service would you use if you wanted to authenticate users at the CloudFront Edge Locations instead of having authentication requests go all the way to your origins?

Answer 24

Lambda@Edge

Question 25

Which AWS service allows you to build Serverless workflows using AWS services (e.g., Lambda) and supports human approval?

Answer 25

AWS Step Functions

Question 26

What is the best and most cost-effective way to convert DynamoDB data to json files?

Answer 26

Select DynamoDB table then select Export to S3

Question 27

Which service can be placed in front of an existing application to make it more scalable and cheaper by caching static content at the edge?

Answer 27

CloudFront

Question 28

True/False - AWS Lambda has an out-of-the-box caching feature

Answer 28

False

Question 29

An AWS service allows you to capture gigabytes of data per second in real-time and deliver these data to multiple consuming applications, with a replay feature.

Answer 29

Kinesis Data Streams

Question 30

True/False: Lambda functions always operate from an AWS-owned VPC

Answer 30

True

Question 31

A Lambda ___________ is a ZIP archive that contains libraries, a custom runtime, or other dependencies that allows you to use libraries in your function without needing to include them in your deployment package

Answer 31

Layer

Question 32

True/False: You cannot package and deploy Lambda functions as container images

Answer 32

False