FoundationsNetwork Topologies & Active Directory
Network topology describes how devices on a network are physically or logically arranged — common patterns include star, bus, ring, and mesh layouts. Active Directory (AD) is a directory service used to manage users, computers, and resources across a network, and it's a frequent topic in intro networking courses because it ties together identity, permissions, and resource access.
DefenseFirewalls & Network Security Fundamentals
Network security starts with trust — establishing who and what should have access before layering on defenses. Defense in depth means applying multiple layers of security controls so that no single failure exposes the whole network. Least privilege — giving users only the access they need to do their job — is consistently the best defense against both external attackers and unethical insiders.
TerminologyCybersecurity Vocabulary
Cybersecurity coursework leans heavily on precise vocabulary — terms like Acceptable Use Policy (AUP), which defines proper use of an organization's technology, come up constantly in both coursework and real workplace security policies. Building a solid vocabulary early makes the more technical material much easier to follow later.