In this learning activity you'll review the differences between identification, authentication, and authorization.

In this learning activity you'll discover the disconnected nature of the HTTP request-response model including some methods of persisting state and the security implications.

In a series of interactive exercises, learners identify the parts of a URL, a Web site, and an e-mail memo. Students are given their score at the end of the activity.

In this learning activity you'll explore the physical construction and operation of single-mode and multi-mode fiber-optic cables used in networking.

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.

In this learning activity you'll examine how a large computer network is configured.

Formulas and Functions in Microsoft Excel

A learning object to illustrate the right way to enter formulas and functions in Excel.

In this interactive object, learners examine standard and metric thread specifications used in engineering drawings. In a brief quiz, they identify various internal and external thread representations.

Learners examine the symbols and values that control surface roughness, waviness, and lay. A brief quiz completes the object.

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Test your knowledge of some common computer hardware acronyms.

In this game, you'll practice memorizing facts about RAM standards.