MTA - Networking Fundamentals (Teaching and Learning)

Explore LANs confined to a building or floor, and CANs linking LANs, and see how SOHO networks use a domain controller with Active Directory to centralize users, devices, and sign-on.

Explain decimal, binary, and hexadecimal numbering systems, their bases and bit-level representations, and how these concepts underpin IP and MAC addressing in networks.

Explore network addressing as an identification mechanism for devices and learn unicast, broadcast, and multicast communication, plus the differences between mac addresses and ip addresses.

Explore Cisco packet tracer to build networks, practice addressing, and view protocol headers, then configure ip addresses and mac addresses while learning about default gateway and classful addressing.

Explain how arp resolves a destination's mac address from its ip address using broadcast requests and arp caches, and how icmp supports error reporting with ping and traceroute.

Demonstrates how ARP resolves IP addresses to MAC addresses and how ICMP messages are exchanged, including ARP broadcast requests and ICMP echo requests and replies.

Explore wired network media, from twisted word cable and cockshell cable to fiber optics, detailing interference, shielding, category standards (cat3 to cat8), and connector types.

Explore physical and logical network topology concepts, including bus, ring, star, and mesh designs. Learn about hybrid topologies, redundancy, and fault tolerance.

Explain how Token Ring and FDDI use deterministic token passing to avoid collisions, with local area networks and metropolitan area networks, and speeds from 16 Mbps to 200 Mbps.

Explore Ethernet as a family of networking technologies enabling data exchange in local, metro, and wide area networks; learn about baseband, collision domains, hubs, switches, full duplex, and frame forwarding.

Explore how hubs expand a network, flood traffic to all ports, reveal arp and mac address behavior, contrast unicast replies with broadcasting, and highlight hub inefficiency.

This lecture demonstrates how switches learn MAC addresses and forward broadcasts across a two-switch network, using MAC address tables, unicast replies, and cross-over connections.

Explains subnetting and default gateways, showing how broadcasts stay within a subnet and how routers enable inter-subnet communication, with classful addressing and VLSM concepts.

Explore how subnet masks govern communication between gateways, using slash 26 and slash 24 to determine valid host ranges. Observe ICMP ping interactions and how range calculations affect delivery.

The lecture demonstrates why certain IPs are invalid for hosts, showing how subnet IDs and broadcast addresses cannot be assigned, and tests various addresses and subnet masks to illustrate validity.

configure a default gateway by enabling the router interface, assign non-overlapping /27 subnets on connected interfaces behind the switch, and re-enter addresses with mask /27 to avoid overlap.

Learn how proxy ARP allows routers to respond to ARP requests on behalf of a destination, enabling communication when paths are unknown, with proxy ARP enabled by default.

Configure a host with a default gateway and understand how the gateway routes traffic beyond the local subnet. Explore MAC address resolution and ARP for the gateway.

Learn how disabling proxy ARP impacts gateway MAC resolution and ARP behavior across overlapping subnets, with simulation results illustrating when proxy ARP restores communication.

Understand how virtual LANs create separate broadcast domains without extra hardware, grouping departments on one switch to improve performance, security, dynamic VLANs, and cross-switch communication via tagging and trunking.

Learn to create VLANs to separate broadcast domains on switches, configure trunk links, and assign interfaces to VLANs, observing VLAN tagging in frames across trunks.

Explore the OSI reference model and its seven layers, from physical to application, and how each layer provides services, handles addressing, encapsulation, and protocol interactions for interoperable networks.

Understand the tcp/ip four-layer model, the vip protocol suite, and ietf rfc standards that govern protocols across layers, including tcp's three-way handshake, reliability, and udp's real-time use.

Learn to work with FTP by connecting a client to a server, configuring IP addresses, and transferring files using active and passive modes and their data ports.

Explore how the VIP protocol suite builds layered communication, perform a TCP-like three-way handshake over HDB connections, and inspect packets from Ethernet to transport layers, including connection establishment and teardown.

Discover how to run netstat with switches to view TCP/UDP connections, numerical addresses, associated processes, protocol statistics, ethernet statistics, and the routing table.

Explore why IPv6 provides a 128-bit address space and key improvements, including global unicast, link-local, and unique local addresses, IPsec security, simplified routing, NDP and ICMPv6, no broadcast, and tunneling.

Configure IPv6 unicast routing and test connectivity using router advertisements and solicitations for auto configuration; assign interfaces with /64 networks, observe link-local addresses from MAC, and configure hosts with gateways.

Explore wireless media and wireless lan fundamentals, including access points, ssid, authentication and encryption options (wep, wpa, wpa2, wpa3), security tradeoffs, and key 802.11 standards and roaming.

Configure wireless devices by setting up an XPoint and a wireless home router. Set router parameters, assign IPs with DHCP, enable wireless security, and verify network connectivity.

Explore wide area networks and the roles of packet switching and circuit switching in WAN connections. Compare X.25, ATM, PSTN, ISDN, DSL, broadband, fiber, intranets, extranets, and Internet.

Understand routing fundamentals, including static vs dynamic routing and the role of default routes. Analyze how administrative distance and metrics guide path selection among protocols—RIP, OSPF, EIGRP, and BGP.

Configure and explain static routing by assigning IP addresses to gateways and interfaces, adding interfaces, saving configurations, and verifying connectivity with traceroute and ICMP messages.

Configure dynamic routing with the rip protocol on networks connected to router, enabling them and observing rip updates via udp 520. Verify routing by ping tests and reviewing routing table.

Learn how tracert and pathping reveal the route to a destination by showing each hop, icmp responses, ttl behavior, and how load balancing and non responsive routers affect results.

Explore security and remote access concepts, including vpn and dial-up, authentication methods, ipsec and l2tp, firewalls, dmz configurations, proxy servers, and nat translation for safe remote connectivity.

Configure default routes and network address translation to connect internal networks to the internet, learn static routing, and observe NAT translation in action.

Explore how the domain name system translates host names to IP addresses, comparing hierarchical DNS with recursive and iterative queries, and highlighting records like A and CNAME, plus dynamic DNS.

Configure DNS and use the nslookup command to translate names to IP addresses, create A records on internal and external DNS servers, and distinguish authoritative from non-authoritative responses.

Learn how dhcp automates ip address configuration using the dora discovery, offer, request, and ack process, with ports 67 and 68 and options like ntp and tftp servers.

Configure dhcp servers and address pools, exclude server addresses, and set default gateway and dns for multi-subnet networks. Explore dhcp proxy agent solutions to forward requests across routers.

Explore using Geneste and Wireshark to build and analyze factory-like networks, compare simulators with real devices, and capture traffic to inspect IP, ICMP, and MAC details.

Explore tcp/ip commands with dcb iv to remotely log in to devices on port 23, run dns lookups for sites like google com, and flush the dns cache.

Explore advancements in software defined networking and dna technology, including central control and brain controllers, and learn how network functions virtualization and software switches enable flexible, automated cloud networks.