Master Computer Networks & Cloud Computing Course

Learn the fundamentals of computer networks by exploring how devices, or nodes, connect to share and exchange data, enabling file sharing, data transfer, internet access, and application use.

Explore personal area network, local area network, metropolitan area network, and wide area network, with Bluetooth, Ethernet, Wi-Fi, and internet concepts.

Explore star, bus, ring, and mesh topologies, where star uses a central hub, bus uses a backbone cable, ring forms a closed loop, and mesh provides reliability at a cost.

Discover network devices like hubs, switches, routers, and modems, and how hubs broadcast to all, switches forward to devices using mac addresses, and routers route between local networks and internet.

Explain intranet, extranet, and internet concepts, presenting intranet as a public, firewall-protected private network for internal users, and extranet as a controlled private network for authorized outsiders.

Wired transmission uses physical cables, delivering higher security, speed, and reliability in offices and data centers. Wireless transmission, via radio waves, offers mobility and flexibility but lower security and speed.

Explore three network cable types—coaxial, fiber optic, and twisted pair—covering coaxial’s copper conductor with insulation and shield, Ethernet and TV uses, fiber optic via light, and cheaper UTP for LANs.

Define bandwidth as the maximum data that can be transmitted per unit time and describe throughput as the actual data rate, reduced by latency and signal quality.

explain the osi model, seven layers of open system interconnection, from physical to application, detailing layers, mac addresses, routing, tcp/udp, authentication, encryption, and common protocols such as http and dns.

Explore the four-layer TCP/IP model, including the application, transport, internet, and network access layers, and compare it with the seven-layer OSI model to understand real-world internet use.

Explore protocols across network layers, including http, https, ftp, smtp, dns, pop3, imap; tcp and udp; ipv4/ipv6, icmp, ospf, bgp; ethernet and wifi.

Use a mac address to identify devices; a 48-bit hexadecimal identifier burned into network interface cards, where the first three bytes indicate the manufacturer and the last three identify device.

Identify how a 16-bit port number (0-65,000) identifies a specific service on a device, enabling data transfer and access, through well-known, registered, and dynamic ports.

Discover what an IP address is in the network layer and compare IPv4 and IPv6, including 4.3 billion IPv4 addresses and 340 undecillion IPv6 addresses that identify devices.

Explain the ip address classes a through e, including d for multicast and e for reserved experiments, and distinguish public ip addresses from private ranges 10, 172, and 192.

Explore subnetting by dividing a larger network into smaller networks to improve performance and security, and identify networks and hosts with subnet masks.

Explore routing basics and routing tables, where routers receive packets, check destination IPs, and identify the best path from source to destination for fast, efficient data transfer.

Compare tcp and udp as transport layer protocols, highlighting tcp's connection oriented, guaranteed delivery with error checking and retransmission, versus udp's fast, connectionless, non-guaranteed delivery for real-time apps.

The lecture explains HTTP and HTTPS protocols in the application layer, comparing plain text on port 80 with encrypted data on port 443 protected by TLS or SSL.

FTP transfers files between client and server, used by web developers to move website files via ports 21 for control and 20 for data, with FTPS and SFTP more secure.

Explore smtp, pop3, and imap email protocols, their ports (25/587 for smtp, 110 for pop3, 143/993 for imap), and how each handles sending messages, downloading emails, and keeping data synced.

Learn how network security protects data in transit by applying policies, practices, and technologies to safeguard confidentiality, integrity, and availability.

Protect the network with a firewall that monitors and controls traffic to detect threats using security rules. Use vpn and encryption to protect data, hide your ip, and aes-256 keys.

Explore common network attacks, including DDoS, phishing, and man in the middle attacks, with examples of server overload, fake messages, and data interception.

Explore network careers such as administrator, engineer, security analyst, and cloud network engineer, and learn TCP/IP, routing, firewalls, VPNs, and AWS or Azure.

Explore a certification ladder from entry to expert: COMTA network plus, Cisco CCNA, Cisco CCNP, Cisco CCIE, and AWS advanced.

Explore the fundamentals of the Windows operating system, including the OS disk C, NTFS, disk cleanup, system tools, and key security features like UAC, Event Viewer, Windows Defender Firewall, and System Restore.