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Question 1

Authentication Vs authorisation

Answer 1

Authentication verifies who a user is, logging in with a username and password / 2FA

Authorisation, let a authenticated user can access, for example, only a user can only view this content while admin can edit or delete

Question 2

OAuth and example

Answer 2

OAuth: an authorisation protocol that let app access user data without sharing credentials

For example, sign in with google allows a website access ur profile without password

Question 3

OpenID connect and example

Answer 3

OpenID add a layer of authentication, this will verify both who you are and what you can access

For example single sign on (SSO) allow you to use the same login across multiple service

Question 4

What is Real time data streaming

Answer 4

It process data instantly in real time instead of storing it

For example: weather, social media, financial transactions

Question 5

What is Data scale

Answer 5

The volume of data processed, use in Machine learning and real time applications

More data improve decision making in AI model

Question 6

Why real time and data scale work in Spotify and Netflix

Answer 6

They use recommendations instantly based on ur interactions and optimise video audio quality depending on network speed