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The Basics of Computer Networking

The document provides an introduction to computer networking, presented by Daniel Cummins, a certified technical trainer and CompTIA expert. It covers essential components of networks, including devices, applications, and media types, as well as different networking models, protocols, and topologies. Additionally, it includes practical activities for building a LAN and understanding various access technologies.

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The Basics of Computer Networking An introduction to Network+ Presented by Daniel Cummins
© Global Knowledge Training LLC. All rights reserved. Page 2 Presenter Daniel Cummins Daniel Cummins is a CompTIA Certified Technical Trainer (CTT+) and has been CompTIA certified since 2010, having passed all of the Core and Cybersecurity exams. Including recertification, Daniel has taken and passed more than a dozen CompTIA exams. He also maintains his Cisco Certified Network Administrator certification.
What Is Computer Networking? A computer network consists of: Two or more devices connected by media Apps to support sharing Media 1-2
Building Blocks of Networks Devices Applications Networks Computers Servers Printers Disk drives File transfers E-mail Imaging andLANs WANs Cables Routers Switches TCP/IP 1-4
End-User Devices Mobility is important. Network connections are essential. OS must be designed for networking. Resources 1-5
Network Resources Printer Servers NAS storage 1-7
Switches and Access Points Access switches connect end-users. Core switches connect switches and shared resources. APs connect wireless devices. Wireless AP Switch 1-9
Routers Routers connect one network to others. Routers control communications. Wireless router Router 1-11
Media Different types of signals are transmitted over different media. Electricity is transmitted over copper Radio frequencies are transmitted through air Light is transmitted over optical fiber 1-8
Network Types PAN LAN CAN MAN WAN 1-15
Network Topologies A topology is the physical layout of the connection. 7-17
The TCP/IP Networking Model Layer Name Function Examples Application Define applications protocol functions FTP, SSH, DNS Transport Manage communication sessions TCP, UDP Internet IP addressing, routing IPv4, RIP, IPv6 Network interface Physical transmission Ethernet, Wi-Fi 1-6
Peer-To-Peer Protocols: Actual Flow From Patrick To Margaret Application Transport Internet Network interface Application Transport Internet Network interface Data AH AH AH TH TH IHAH AH AH TH AH TH IH NH IH TH AH TH IH NH 1-8
Peer-To-Peer Protocols: Effective Flow Application Transport Internet Network interface Application Transport Internet Network interface 1-8
Internet Access Technologies Dial-up modem DSL Cable modem WiMax Cellular data Wi-Fi hot spot Satellite Internet Mobile user Branch site 12-30
Activity: Build a LAN In this activity, you will arrange network components properly to build a LAN with a connection to a WAN. Click GO to start the activity. Once it opens, drag each network component or technology into the appropriate box in the network diagram to complete the diagram. GO
© Global Knowledge Training LLC. All rights reserved. Page 17 Courses Networking Basics: Understanding Networking Fundamentals CompTIA Network+ Certification Prep (N10-007)