In this learning activity you'll explore how port scanning is commonly used by hackers to infiltrate a network and how IT security professionals can detect it.

In this learning activity you'll explore three common network protocols that computers use to communicate in a network.

In this learning activity you'll identify TCP and UDP port states and how they behave during interaction.

In this animated lesson, learners examine sine waves and alternating current. A brief quiz completes the object.

In this animated object, learners examine cycles, frequency, Hertz, wavelengths, and periods. A brief quiz completes the activity.

Learners view an explanation of how to read a graduated cylinder by measuring the lowest portion of the meniscus. A quiz completes the activity.

In this animated object, learners examine the PDF (portable document format), which has become the standard file format in the printing industry for the distribution of printable documents.

Learners observe current flow throughout the series portion and branches of a parallel circuit. This animated activity includes calculations and a short quiz.

Learners dissect a portion of a wordy document by summarizing and "chunking" related bits of information to find the important points.

Learners match diseases with their portals of entry, causative agents, and associated vectors.