IT Networking Fundamentals for Beginners

Explore the TCP/IP protocol suite and its four layers—application, transport, network, and data link—along with TCP and UDP, their differences, and common examples.

Explore ip addressing, focusing on ipv4 and ipv6, including private and public addresses, static versus dynamic types, and how routing tables and subnet masks enable communication.

Master subnetting and classless inter-domain routing (CIDR) to divide address space into networks and hosts using netmasks. See how CIDR enables supernets and flexible, contiguous address ranges.

Explore TCP, a reliable, connection-oriented protocol with flow control and error detection for email and file transfers. Compare UDP, a connectionless, unreliable protocol, supports real-time apps like gaming and VOIP.

Explore how routers connect networks using routing tables and NAT. See how switches forward traffic by MAC addresses and how bridges, hubs, firewalls, and modems protect and connect networks.

Discover network cabling types and their characteristics, including twisted pair, coaxial, and fiber optic. Learn about connectors such as RJ-45, BNC, SC and LC, and the importance of proper installation.

Explore essential networking tools for monitoring, troubleshooting, and maintaining a functional network, including ping, traceroute, nslookup, telnet, ssh, and Wireshark.

Learn how DNS translates domain names to IP addresses, how DHCP automatically assigns IP addresses, and how FTP, SFTP, FTPS, SMTP, and HTTP/HTTPS enable file transfer, email, and web traffic.

Explore how a vpn or virtual private network creates a secure, encrypted connection by routing traffic through a remote server to protect online privacy and security and bypass internet restrictions.

Explore common network security threats such as viruses, malware, spam, phishing, ransomware, and DDoS, and learn protective practices like updates, anti-malware, backups, and filters.

Protect your data and systems by using firewalls, encryption (symmetric and asymmetric), strong access control, intrusion detection and prevention, and regular patch management.

Master access control by authenticating users and authorizing actions with username/password, multifactor authentication, and RBAC, ensuring least privilege across data and systems.

Explore real time network monitoring tools, including SNMP, Wireshark, IP scanners, the command line, and net flow, to identify threats, optimize performance, and secure devices across your network.

Master network management by monitoring and controlling network devices through remote management, SNMP tools, and centralized cloud-based solutions to ensure security, performance, and reduced downtime.

Define cloud computing and its service models—infrastructure, platform, and software as a service—and describe access over the internet with cost savings, scalability, and security.

Explore the three cloud types: public, private, and hybrid, and see real-world examples like Amazon Web Services and Google Drive, with their uses, costs, and security.

Explore the basics of virtualization, its cost savings and benefits, and popular solutions like VMware and Hyper-V, including virtual machines, virtual network switches, and virtual storage.

Review the course topics—from OSI and TCP/IP models to routers, switches, and firewalls—while highlighting security threats and cloud computing resources for further study.