Cisco ICND1 100-105 - CCENT Certification Bootcamp

Install and register Cisco Packet Tracer, launch and log in to access labs. Build and connect device topologies and explore using the CLI.

Explore the OSI reference model, a seven-layer framework for network communication, and see how data encapsulates from application to physical, with MAC and IP addressing.

Explore the four-layer tcp/ip stack and its mapping to the osi model, covering application, transport, internet, and network access layers, and the evolution of frame, packet, and segment terminology.

Learn the upper OSI layers (5–7): the application, presentation, and session layers, with exam-focused definitions, roles, data integrity, format translation, and session management for multiple connections.

Explore the four lower OSI layers—the transport, network, data link, and physical. Learn their definitions and how TCP/UDP, port numbers, IP addressing, MAC addressing, routers, and switches function.

Explore how Cisco IOS powers most routers and switches, tracing its evolution from PIX firewall to IOS and showing command-line consistency across platforms.

Navigate the Cisco IOS command line with a live lab demo, mastering privileged exec and user exec prompts, show commands, tab completion, command abbreviations, and global configuration basics.

Navigate Cisco IOS efficiently by using command history, keyboard shortcuts, and mode transitions, and apply show and pipe commands with begin, include, and exclude filters.

Delve into the transport layer, exploring port numbers and the two protocols, including UDP, to contrast how they function within the bottom four OSI layers.

Explore the transport layer, comparing TCP and UDP: connection-oriented reliability, flow control, sequencing and acknowledgments, three-way handshake, and UDP's best-effort delivery; understand port numbers, session multiplexing, and stateful firewalls.

Explore unicast, broadcast, and multicast traffic on an IP network, showing how unicast targets a single host, broadcast floods to all, and multicast delivers to multiple receivers with efficiency.

Master decimal-to-binary conversion and counting in binary, including binary digits 0 and 1, to understand how IP addresses are organized in networks.

Learn how IPv4 addresses are 32-bit numbers formed by four 8-bit octets in dotted decimal, viewable on Windows and Linux, plus subnet masks, default gateway, and DHCP.

Convert IPv4 octets from decimal to binary using 8-bit patterns and bit weights (1,2,4,8,16,32,64,128). Practice with 192.168.10.15 and verify with checks as you prepare for the subnet mask.

Learn how subnet masks define the network and host portions of IP addresses and how to determine if destinations are on the same subnet or must go through default gateway.

Review the IP address format and introduce the advanced classes A, B, C, D, and E, laying groundwork before the next section.

Explore the IP address classes (a, b, c) and how the network and host portions are allocated with slash notation, noting class a's first bit zero and loopback addresses.

Examine class B and class C IP addresses, their default subnet masks (/16 and /24), and the resulting network and host ranges; review private address ranges for private networks.

Explore how IP addresses and the subnet mask define boundaries between logical networks, with practical examples and guided practice.

Cidr, or classless inter-domain routing, splits address space into smaller blocks and enables route aggregation, letting ISPs advertise a single summarized route for efficiency and stability.

Design a scalable, variable length subnet masking plan for a multi-location network, using New York and Boston offices to balance department sizes, growth, and efficient address usage.

Explore variable length subnet masking through calculating optimal subnet masks, network and broadcast addresses, and host ranges for multiple departments and a point-to-point link.

Explore subnetting large networks by subnetting class B to /29 and class A ranges, calculating network and broadcast addresses and valid host ranges.

Explore subnetting large networks by calculating hosts per subnet and networks with slash notation, classful boundaries, and network and broadcast addresses through practical third-octet examples.

Learn how private ip address ranges with RFC 1918 keep networks off the internet. Understand the classic ranges 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16 and network address translation to public IPs.

Explore the physical layer in the Sci reference model, focusing on ethernet connection types, local area networks, and the specifications of cable and fiber optic cable.

Explore the physical layer of Ethernet media, including copper twisted-pair, fiber optic, and wireless links, with cables, connectors, MDI-X, and straight-through versus crossover configurations.