CISCO CCNA 200-301 Part4 100% LABS.

Install Cisco Packet Tracer by downloading and registering for a free account, launch and log in, and use it to simulate DHCP labs alongside Windows Server 2022 labs.

Explore the purpose of a router and a switch, showing how routers connect networks and switches manage the local network, and how a multilayer switch can act as both.

Discover the main cable types used in network setup, including straight-through, crossover, and rollover cables, plus console connections for initial router or switch configuration using utp cabling.

Compare broadcast and collision domains, and see why hubs are obsolete in favor of switches. Learn how switches create separate collision domains per port, and how routers break both domains.

Explore IP classes and how decimal IPs map to 32-bit binary addresses, with four octets, distinguishing IPv4 and IPv6, and hands-on lab on hosts, LANs, WANs.

Classify IPv4 addresses into A, B, and C by the first octet and apply the subnet masks. Recognize D and E reserved for multicast and research; CIDR /8, /16, /24.

Explore class C addressing with 192.168.100.0/24, using 255.255.255.0, where the first three octets form the network and the last is the host.

Explain class B networks: the first two octets form the network and the last two form the host, using a 255.255.0.0 (/16) mask, with examples like 172.16.0.1 to 172.16.255.254.

Explore class A, B, and C IPv4 networks, identifying network and host portions, default mask 255.0.0.0 (CIDR /8), and rules for network ID, broadcast, and usable hosts, using 10.x.x.x examples.

Learn about class D multicast and class E for research, with pay-per-view and Netflix as examples. Understand multicast routing concepts and note that classful networks and subnetting are covered later.

Explore how TCP and UDP differ, and how ports serve as entry points for connections, with well-known, private, and dynamic ports and the socket concept.

Explore how TCP and UDP ports work on Windows client and server, using netstat to view 3389 remote desktop and 445 file sharing ports, and observe Kerberos 88/464.

Discover how to change the remote desktop port from 3389 to 5555 via the registry, verify with netstat, and open a firewall port for TCP 5555; compare TCP and UDP.

Set up DHCP on a router using Packet Tracer, create a DHCP pool with a default gateway and DNS, and verify clients obtain addresses with ipconfig and ping.

Set up dhcp on a router for two broadcast domains by configuring interfaces on 100 and 200 networks, excluding addresses, creating separate dhcp pools, and validating via connectivity tests.

Set up a dhcp relay using ip helper address to forward broadcasts from a non-dhcp segment to a centralized dhcp server, enabling ip addressing across two networks.

Set up a single DHCP server in Packet Tracer, configure IP addressing, and test client IP assignment with ipconfig renew on the network.

Set up two dhcp servers on separate networks with gateway 10.254 and dns as all eight, then observe ipconfig release renew broadcasts from either server.

Learn to configure IP DHCP snooping and designate a trusted port so clients only contact the company DHCP server, securing DHCP services on a Cisco switch.

Configure dhcp for multiple vlans by creating vlan ten, vlan twenty, and vlan thirty with subinterfaces and dot1q encapsulation, and set up per vlan dhcp pools.

Explore how to configure fault tolerance for a router, compare a single-router topology with a backup router setup, and observe traffic paths across two networks using Cisco Packet Tracer.

Configure a two-router topology with two switches, assign IP addresses for two networks, set default gateways, and verify connectivity with ping and traceroute; introduce manual failover and HSRP.

Configure hsrp on two Cisco routers to create active and standby roles with virtual IPs for groups 100 and 200 (192.168.100.1 and 192.168.200.1), enabling rapid failover.

HSRP enables fault-tolerant networks with two routers, featuring active and standby roles, configurable priority, preempt, and virtual IP failover.

Explore standard, extended, and named access lists that filter traffic on routers. Learn wild card masking, top-to-bottom rule, and applying lists to interfaces with an implicit deny.

Configure a standard access list to permit a single host on inbound vty and deny all others. Practice basic router setup, dhcp, password encryption, and telnet access.

Learn to configure and test standard access lists on Cisco routers, apply them to line vty inbound traffic, understand top-to-bottom rule processing, and master wild-card and increment-number concepts.

Explains how standard access lists control inbound traffic by using permit statements with networks and wildcard masks, demonstrates line VTY configurations, and illustrates top-to-bottom processing with implicit deny.

Practice configuring a standard access list on a router to permit a specific host, apply it to the outbound interface, and verify connectivity.

Learn extended access lists that filter by source and destination ip addresses and ports, apply them on interfaces, and see how only ping passes while other traffic is implicitly denied.

Demonstrate extended access list 100 by permitting icmp from a specific host, denying tcp port 80, and permitting other traffic, then verify with selective pings and tests.

Explore extended access lists by configuring a tcp permit for ports 80 to 442 and applying it to an interface for inbound traffic, illustrating implicit deny, https and ftp access.

Configure extended access list 100 to deny icmp and permit tcp port 443 for a web server, enforcing a default deny policy and validating with https traffic.

Master named access lists (standard and extended), apply them to vty or interfaces, and verify with show commands, including denying a host and permitting web traffic on port 80.

Explain private vs public networks on a local area network, highlight private ranges like 192.168.x, 172.16.x, 10.x, and note DHCP, APIPA, and NAT are involved.

Explore how static NAT translates private IPs to public addresses for 1-to-1 mappings, and contrast dynamic NAT and port address translation (PAT) enabling many devices per public IP.

Learn how dynamic NAT uses a pool of public IPs and three commands (access list, pool, and linking) to translate private hosts to public addresses with per-connection IPs.

Translate private addresses to a single public IP using different port numbers. Use port address translation to translate private IPs to one public IP, using different ports to distinguish sessions.

Practice labs repeatedly with Cisco Packet Tracer to master the command line, using space, question mark, and tab key hints to build confidence, and reach out with questions.