What is an Organizational Unit (OU)?
A: A logical grouping of AWS accounts used to apply governance and policies.
Q: What do Service Control Policies (SCPs) do?
A: They set the maximum permissions an AWS account can have in an organisation.
Q: Do SCPs grant permissions directly?
A: No, they only limit permissions.
Q: What is the relationship between IAM policies and SCPs?
A: Effective permissions are limited by both, so access must be allowed by IAM and not blocked by the SCP.
Q: Why are SCPs useful in AWS Organizations?
A: They centrally restrict what accounts in the organisation are allowed to do.
Q: What is AWS KMS used for?
A: Creating and managing encryption keys.
Q: What is the main security purpose of AWS KMS?
A: To control encryption across AWS services and applications.
Q: Why does AWS KMS integrate with CloudTrail?
A: To log and audit key usage.
Q: What protects keys inside AWS KMS?
A: Hardware Security Modules (HSMs).
Q: What standard are AWS KMS HSMs validated against?
A: FIPS 140-2.
Q: What is Amazon Cognito mainly used for?
A: Managing user sign-up, sign-in, and access control for apps.
Q: Why is Amazon Cognito suitable for large applications?
A: It scales to millions of users.
Q: What kind of providers can Amazon Cognito connect to?
A: Social and enterprise identity providers.
Q: What does AWS Shield Standard provide?
A: Automatic basic DDoS protection.
Q: What is AWS Shield designed to protect against?
A: DDoS attacks.
Q: What does AWS Shield Advanced add?
A: Enhanced detection and mitigation features.
Q: Why is AWS Shield important for availability?
A: It helps reduce downtime and latency during attacks.
Q: If IAM allows an action but an SCP blocks it, what is the result?
The action is denied
Q: Why might a company organise accounts into different OUs?
A: To apply different controls to different groups of accounts.
Q: What is the key difference between IAM policy and SCP?
A: IAM grants permissions, while SCP limits the maximum permissions.
Q: Why is key management important in cloud security?
A: Because data security depends on protecting encryption keys.
Q: Why might Cognito and IAM be used together?
A: To give authenticated app users secure access to AWS resources.
Q: What is the main governance benefit of AWS Organizations?
A: Consistent control across multiple AWS accounts.
Q: What is the main security benefit of using KMS instead of unmanaged keys?
A: Centralised and auditable key control.