Lambda

Question 1

Lambda Networking Mode

Answer 1

VPC Resides in a Subnet in a vpc, requires configuration and Permissions for access.

Public Resides in aws Public Zone. Can Access all AWS Pulic services and Public internet just with Auth and Auth. No configuration is required.

Question 2

Lambda Time Limit

Answer 2

15mins

Question 3

Lambda function size Limit

Answer 3

10,000MB

Question 4

Lambda Cold Start

Answer 4

A Lambda invocation can reuse an execution context but has to assume it can’t. If used infrequently contexts will be removed. Concurrent executions will use multiple (potentially new) contexts

Question 5

Lambda in vpc

Answer 5

Once Lambda is deployed into a vpc, it is bound by every rules that applies to all Resources inside a vpc. EG Security group, NAT, VPC endpoint, Routing etc

Question 6

Lambda Invocation Methods

Answer 6

Synchronous
Asynchronous
Events Source mapping

Question 7

Lambda Provisioned Concurrency

Answer 7

A pre-running warm start, execution environment. With this Provisioned concurrency can be used.

AWS will create and keep X contexts warm and ready to use .. improving start speeds

Question 8

Temp Space

Answer 8

Functions sharing execution context without having to download files and dependencies codes

Question 9

Lambda Environment Variables

Answer 9

You can define environment variables as key-value pairs that are accessible from vour function code. These are useful to
store contiguration settings without the need to change function code.