What networks, routers, switches, and Wi-Fi do
Defining local packet distribution via switches, inter-network traffic routing via routers, and wireless radio communication layers.
Section 1
Topic 3: Networking Basics
IP, MAC, DNS, and DHCP in simple terms
Differentiating hardware addresses (MAC), network addresses (IP), name resolution services (DNS), and automated address assignment configurations using the DHCP DORA process. Learn more via the Dev.to Guide on Switches, Routers, and DNS.
How websites and email use internet protocols
Analyzing the structural dependencies of HTTP/HTTPS over TCP/IP, secure cryptographic handshakes, and simple mail transport protocols (SMTP).
Ports, services, firewalls, and basic traffic flow
Explaining target communication channels (e.g., port 443 for secure HTTPS web traffic) and applying firewall rule sets to filter unauthorized network packets.
Home and office network safety basics
Hardening gateway administration entry points, disabling Universal Plug and Play (UPnP), and maintaining segregated employee or guest access vectors.
Knowledge Check
What is the sequential process used by DHCP to lease an IP address dynamically?
It follows the DORA process: Discover, Offer, Request, and Acknowledge.
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