ISC Updated CC Exam Questions and Answers by aqsa

Authentication is the process of verifying that a user is who they claim to be. Identification occurs first (username), authentication verifies the claim (password, token, biometrics), and authorization determines access rights.

Routers control traffic flow between different networks by making routing decisions based on IP addresses. They operate at OSI Layer 3 and determine the optimal path for data packets.

Encryption ensures confidentiality by rendering data unreadable to unauthorized users, whether at rest or in transit.

A VPC endpoint is the best solution for enabling secure, private connectivity between systems in different virtual private clouds (VPCs) without traversing the public internet. VPC endpoints allow private communication using the cloud provider’s internal network.

VPNs introduce additional overhead and complexity, while internet gateways and public IP addresses expose systems to the public internet, increasing attack surface.

VPC endpoints provide strong security, reduced latency, and simplified architecture. They are recommended by cloud providers and security frameworks for private, internal cloud communication.