An Algorithm for Converting a Decimal Number to a Binary Number
By Kevin Ritzman
In this learning activity you'll examine a systematic method for converting a decimal number (base 10) into a binary number (base 2).
Data Flow on the Internet
By Mark Puig
In this learning activity you'll examine how a data file is broken into packets and transmitted over the Internet.
Network Topologies
By Terry Bartelt
In this learning activity, you'll examine the different ways in which computers and other equipment are physically connected in local area networks and the advantages and disadvantages of each topology.
The Cell Membrane and Nanotechnology
By Barbara Liang
In this animated activity, learners examine nanotechnology applications that are based on cell membrane structure and function.
Clients and Servers
In this learning activity you'll observe how computers operate in a client-server network operating system and consider the advantages and disadvantages of such a system.
Twisted Pair Cable Noise Immunity
In this learning activity you'll explore how to reduce electromagnetic interference (EMI) and crosstalk between adjacent wires.
Bandwidth
By Dennis Fontaine, Terry Bartelt
In this learning activity you'll explore bandwidth.
Comparing Analog and Digital Signals
Learners compare animations of analog and digital data signals. A short quiz completes the activity.
Fiber-Optic Cables
In this learning activity you'll explore the physical construction and operation of single-mode and multi-mode fiber-optic cables used in networking.
Peer-to-Peer Operating Systems
In this learning activity you'll examine how computers operate in a peer-to-peer network operating system.
Analog and Digital Converters
In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.
How Switches Increase Speed
In this learning activity you'll observe how switches are used in local area networks to increase data transmission speeds.
Digital-to-Analog Converters
In this animated activity, learners examine how an electronic converter changes digital signals to analog signals. Sections of a synthesizer are identified, and the operation of a D/A converter is demonstrated.
Coaxial Cables
In this learning activity you'll examine the RG ratings, networking applications, and types of connections for various coaxial cables.
Routers
In this learning activity you'll examine how routers transfer data between local area networks and the Internet.
Switches and Hubs
Learners view animations showing how hubs and switches work in local area network configurations.
A Nano-Introduction to Nanotechnology
In this animated object, learners read about the uses of nanotechnology. The sciences, engineering, electronics, and other disciplines converge in nanotechnology. Examples are given for applications in manufacturing, biomedicine, and environmental science. Concerns about possible environmental effects are discussed.
An Introduction to Motor Proteins and Nanotechnology
In this animated object, learners consider how nanoscientists are mimicking intracellular movements when building nanobots.
IP Addressing and Subnetting
In this learning activity you'll review how a local area network computer uses a subnet mask to determine if its message is intended for a computer on the same network or on a remote network.
Firewalls: Packet Filters
By Joseph Wetzel, Douglas Tabbutt
In this learning activity you'll create a packet filter.
Firewall: Stateful Packet Inspection
In this learning activity you'll examine a stateful packet inspection firewall that keeps track of legitimate Internet service requests, also known as dynamic packet filtering.
Firewall: Network Address Translation/Port Address Translation
In this learning activity you'll examine how network address translation works.
Routers: Logical Addresses
By Joseph Wetzel, Jeff Sonnleitner
In this learning activity you'll examine how logical addresses work. The IP address is the logical address assigned to a connection by the ISP or network administrator.
How the Ethernet Works
In this learning activity you'll explore how computers connected on a network use Ethernet technology.
How to Send an E-mail Message
By Beth Baar
In this interactive lesson, learners read and hear instructions for sending an e-mail. Steps are given for composing an e-mail message and for sending it. Students have an opportunity to write their own messages. A quiz follows the instruction.