CISCO CCNA 200-301 Part3 100% LABS.

Download and install Cisco Packet Tracer for free, register and log in, and launch version 8.22 to simulate DHCP labs for the course alongside Windows Server 2022 setups.

Compare the purposes of routers and switches, explain their roles in lan and wan, and introduce multilayer switches with the ip routing command.

Explain the difference between collision domains and broadcast domains, showing how switches prevent collisions, routers stop broadcasts, and why hubs are obsolete.

Identify cable types used in networks, focusing on UTP cables: straight-through, crossover, and rollover (console) cables, and learn their pinouts and use for router, switch, and initial configuration.

Explore tcp/ip classes and difference between ip and tcp, then learn how ip addresses are 32-bit four octets, shown in decimal with binary conversions for hosts on lan and wan.

Discover how tcp/ip v4 classes determine addresses by the first octet, and why only a,b,c are usable. Learn about class d multicast and class e reserved for research and government.

Explore class C IP addressing, mastering 192.168.x.x networks, subnetting with 255.255.255.0 (slash 24), and validating connectivity using ping in a lab with DHCP and static configurations.

Learn how class B networks use a 16-bit network and 16-bit host with a 255.255.0.0 subnet mask (/16), enabling up to 65,534 hosts per network, using 172.16.0.0 as an example.

Explore class A addressing by analyzing network id, broadcast, and first and last hosts within 10.0.0.0/8, using 255.0.0.0 as the default mask and understanding host scope.

Explore class d multicast networks and class e research addresses with pay-per-view and netflix examples. See how rip, egp, and ospf use multicast routing to update neighbors.

Explore subnetting fundamentals using a class C network, converting subnet masks, and creating eight subnets with 30 hosts each, illustrating classful vs classless networks and practical Cisco Packet Tracer demos.

Learn class c subnetting by borrowing four bits to create 14 networks with 14 hosts each, using a /28 (255.255.255.240) mask, identifying network ids, first/last hosts, and broadcasts.

Reverse engineer class C subnets by analyzing slash notations, borrowed bits, and subnet masks to determine networks, hosts, and broadcast addresses, with practical examples of /29 and /26.

Explore class B subnetting by borrowing bits from the third octet of 172.16.0.0/16 to create networks like /21 and /23, yielding 2046 hosts per network.

Explore class B subnetting by borrowing 10 bits to create 1024 networks with a /26 and 62 hosts per network, then extend to 4096 subnets with /28 and 14 hosts.

Master reverse engineering a class b subnet by applying the subnet mask, computing the network ID, first and last hosts, and broadcast using slash notations and jump sizes.

Explore Class A subnetting with VLSM and CIDR, using ten.0.0.0/8 as the private network example to create 30 subnets and 524,286 hosts per network.

Examine subnetting a class a network by borrowing eight bits to yield 256 class b style networks, a /16 mask with 65,534 hosts per network, and a 1024-network example.

Master reverse engineering a class A subnet by calculating masks, wild cards, network IDs, broadcasts, and jump starts, and practice extensive subnetting quizzes to achieve mastery.

Learn how to configure a single-router network with a default route to the ISP, including DHCP, internal LAN, and gateway of last resort for internet access.

Learn how to implement static routing between two sites using two routers, configure networks (100/200/210/10/20), assign gateways, and verify reachability with ping and traceroute.

Set up a three-site network with routers in New York, Illinois, and California, using static routes on Illinois and default routes on New York and California to enable cross-network connectivity.

Explore static routing with a five-router lab, configure inter-network links, and learn how administrative distance and hops influence path selection, paving the way to floating routes.

Configure floating static routes as backup paths by giving secondary routes a higher metric value. Use show ip route to verify, and observe failover when primary link fails.

Explore dynamic routing with RIP across multi-router networks, compare RIP version 1 and version 2, and learn how broadcast vs multicast updates affect classful and classless networks, distance, and hops.

Configure RIP version 2 with no auto summary to advertise /30 routes using multicast to neighbors, and apply passive interfaces on switch-connected links to prevent unnecessary advertisements.

Learn how OSPF replaces RIP by using bandwidth-based metrics and a 110 administrative distance, form adjacencies in area zero, configure networks with wildcards, and verify routes.

Analyze how OSPF and RIP interact, adjust administrative distance to observe which protocol wins, and implement passive interfaces on router links to switches while comparing cost based on bandwidth.

Set up an OSPF lab across multiple networks, advertise routes, form adjacencies, and demonstrate how bandwidth-based cost determines the best path and supports route tracing.

Learn how OSPF selects neighbors and the router ID; configure loopback interfaces or manual router IDs, verify with show ip ospf neighbor, and reset using clear ip ospf process.

Explore OSPF timers and area zero configuration to keep neighbor adjacencies alive. Mismatched hello and dead intervals break OSPF neighbors, affecting routing and LSA communications.

Secure OSPF by default with authentication using a shared key on interfaces across NJ, PA, and NY; only authenticated neighbors form adjacencies.

Configure OSPF adjacencies by matching areas and timers, fix area mismatches (area zero vs one), set router IDs, and observe the default cost of 1 on interfaces.

Explore how to set up an eigrp lab on Cisco routers, configure autonomous system 100, advertise networks, establish neighbors, and use passive interfaces to control updates.

EIGRP neighbors form only within the same autonomous system. Dual AS numbers 100 and 200 with redistribution let Pennsylvania reach all networks; New York and Maryland see only their networks.

Configure three routing protocols across routers, consolidate to AS 100, and advertise networks; then enable OSPF area zero with adjusted distances to demonstrate IP and OSPF coexistence.

practice configuring routing between sites with OSPF and passive interfaces in Cisco Packet Tracer, using step by step labs and repeatedly watching videos to master the labs.