
Explore data encapsulation and transmission through networks using Cisco Packet Tracer and Wireshark, with hands-on labs, foundational networking concepts, and a companion ebook.
Install Cisco packet tracer and Wireshark on Windows, download from cad.com, and create a free account. Organize a desktop folder for labs and notes to access later.
Learn to run Cisco Packet Tracer on a Mac by installing a Linux virtual machine (Ubuntu) via VirtualBox, then download, install, and launch Packet Tracer.
Explore network architecture models as layered blueprints that define protocols, services, and data encapsulation, from OSI to the TCP/IP model, and understand same-layer and adjacent-layer interactions.
Explore the OSI seven-layer model and focus on the five layers used in data encapsulation—application, transport, network, data link, and physical—covering PDUs and layer-specific details.
Explore the tcp/ip five-layer network model used today, compare it with the original four-layer version, and understand encapsulation from segment to frame, including Ethernet headers.
Explore switches and routers, focusing on layer 2 and layer 3 devices, collision and broadcast domains, and practical lab models for Cisco networking.
Discover the address resolution protocol (arp) and how it maps IP addresses to MAC addresses, populates ARP tables, and uses a broadcast to resolve on the same subnet.
Explore tcp and udp transport layer protocols, their reliability, three way handshake, and port-based communication using source and destination ports.
Explore how the DNS protocol translates domain names to IPs and how DNS servers resolve queries over UDP port 53. See browsers request names and receive IPs for web servers.
Explore how HTTP works from DNS name resolution to TCP connection, showing domain name to IP mapping, port changes, and data encapsulation across layers.
Explore how segments, packets, and frames encapsulate application data across layer 4, layer 3, and layer 2, illustrating headers, addresses, and the role of routers in routing across networks.
Explore how data encapsulation moves packets from Bob's computer to DNS and web servers, tracing DNS resolution, ARP tables, and routing via the default gateway with MAC frame updates.
Sharpen your exam readiness with realistic Cisco practice questions, exploring how Ethernet MAC addresses and IP addresses guide forwarding, and how routers encapsulate and rebuild frames.
Welcome everyone!
In this course you will be learning the basics of Data Encapsulation so you can understand how our data learns the information it needs to be transmitted across the network, using various ports, protocols, addressing, and standards.
I will present this information to you in three formats so you do not get bored and you are engaged in the material I am presenting to you
Join the STUDENTS that LEARN and SUCCEED (Reviews are from all of my courses)!
★★★★★ Really enjoyed the network diagrams and detailed explanations. I would take more courses from this instructor!
★★★★★ Great course and excellent teaching methodology!
★★★★★ Love the way Keith teaches. He phrases concepts in a manner that is easy to follow and understand!
★★★★★ Great course! Definitely will recommend this to others. If you like non dry material with good overall explanations and not just explanations written from a book, then take this course!
Course Information:
For this course you will need to have a basic understanding of networking fundamentals. If you don't, you can always take my "Cisco Networking Introduction" course available here on Udemy. This course has over 9.5 hours of video lectures and is made up of about 2/3 of labs so you become fluent on configuring Cisco routers and switches.
You will need to download:
Students can expect:
In addition, Students will learn:
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Please do not forget to rate this course. We use the ratings to determine if building courses such as this will be worth our time in the future. Note: If you feel this course is not worthy of a good review - please, let me know so I can resolve the issue and we can avoid negative reviews!
Thank you for choosing LearnTech Training with myself, Keith Gebhardt, to be your instructor for this course. If you have any questions, comments, or concerns - please ask.
Enjoy!
Keith Gebhardt