CISCO CCNA 200-301 Part1 100% LABS.

Explore the purpose of routers and switches, including port differences, iOS versions, and multilayer switches for small environments, how routers connect networks and switches serve the lan with ip routing.

Identify three main utp cables: straight-through, crossover, and rollover, and explain their uses, including console cables enabling initial router configuration via the console port.

Explain the difference between a broadcast domain and a collision domain by showing how hubs, switches, and routers split network traffic.

Navigate the Cisco router CLI from user mode to privilege mode, then enter global configuration, interface, and line configurations. Master essential commands, show outputs, and subinterface concepts for practical labs.

View and adjust the command history in privileged mode, using show history, terminal settings, and increasing history size from ten to up to 256 commands.

Learn the difference between the enable password and enable secret, why the enable secret overwrites the enable password, and how to configure them in privileged mode.

Explore storage types on a Cisco router—RAM for running config, NVRAM for startup config, and flash for iOS. Learn to save and erase configs with copy run start and wr.

Explain class b addressing with a 16-bit network and 16-bit host, using a 255.255.0.0 mask; first host 172.16.0.1, last host 172.16.255.254, broadcast 172.16.255.255.

Explore class a network fundamentals: identify network id, broadcast, and first host in a 10.0.0.0/8 scheme; understand 24 host bits, large host counts, and inter-network communication via routers.

Discover class D multicast and class E research addresses, including their uses for pay-per-view and government projects, and how they influence routing protocols like RIP, EGP, and OSPF.

Learn how ports function as entry points for network connections, differentiate TCP and UDP, and identify well-known, private, and dynamic ports (80/443, 21, 25, 53, 67/68, 0-1023, 1024-65535) and sockets.

Explore the difference between tcp and udp ports with netstat, identifying open ports such as 3389 for remote desktop and 445 for file sharing, plus Kerberos ports 88 and 464.

Explore the difference between tcp and udp ports and how port choices affect remote access. Change the rdp port from 3389 to 5555, verify with netstat, and configure firewall rules.

Configure a router interface by enabling it, assigning an ip address 192.168.10.254/24, and adding a description; verify with show ip interface brief and adjust duplex and speed as needed.

Configure a network time protocol time server (ntp) on port 123, set a local server ip 100.200, enable ntp, and verify synced status with stratum two on routers and switches.

Connect to the router via the console port with a rollover cable and PuTTY, configure line console 0 with a password and enable secret for secure direct access.

Configure remote access via telnet by assigning an IP to the router interface, enabling DHCP to assign client addresses, and securing vty lines with passwords and timeouts.

Create local usernames for console and telnet on Cisco routers, authenticate with login local, and assign privilege levels, including 15, which bypasses the enable secret.

Learn to encrypt passwords on Cisco devices with service password encryption in global configuration mode, including enable secret, save with wr, and verify with show run.

Configure ssh on a router by setting hostname and ip domain name, creating a username with privilege 15, generating 1024-bit rsa keys, while disabling telnet and enabling ssh version 2.

Configure a banner message of the day on the router and verify access via telnet, while establishing basic device security with enable secret, login local, and password encryption.

Explore switch configuration basics: set hostname and enable secret, adjust date and time, disable IP domain lookup, and configure command history. Compare layer 2 switching with router layer 3 networking.

learn to establish a console connection to a switch using a rollover cable, set up basic cli security, save the config, and note remote access options via telnet or ssh.

Create local usernames admin1 and admin2 with encrypted secrets, privilege levels, and enable login local on console and vty lines. Note telnet will be replaced by ssh in the next lecture.

Configure secure remote access on a Cisco switch by enabling SSH, creating users, generating RSA keys, and restricting VTY lines to SSH only.

Configure a centralized tacacs+ aaa server to handle authentication, authorization, and accounting for routers, switches, and consoles, and compare tacacs+ with radius for Cisco environments.