Feb 21, 2006 by
Information Technology Editorial Board
This basic reference material presents a not-overly-technical view of DSL made up of short topics. The material includes an introduction to DSL, telephone bandwidth, types of DSL, distance issues, signaling, filters and related equipment. There are links to more technical information regarding DSL and to related network topics.
Type of Material:
This is reference material. It includes text with illustrations.
This could be used as a ice breaker or as student notes. It would be useful as either primary or supplemental presentation.
Computer with a browser and a connection to the Internet. A printer may be helpful.
Identify Major Learning Goals:
After reading this material, the student should be able to describe how DSL and voice co-exist on one line, identify the equipment needed to deliver the DSL service and be able to name several variations of DSL service. The student will be able to identify a limitation of the DSL service. It covers concepts and terms associated with DSL.
Target Student Population:
The material is at a high school level or undergraduate college level.
Prerequisite Knowledge or Skills:
General knowledge of computer connectivity.
Evaluation and Observation
The material is simply and directly written for the novice. The modules are short and the information is easy to grasp. There is a table of contents for direct access to various sections.
Good basic description of DSL. Material is accurate and up-to-date. Good use of hyperlinks to additional resources.
Well presented, easy to follow.
The linked terms do not go to a glossary, but to another lesson package. Descriptions relating to DSL and ADSL are mixed in several sections, potentially confusing the reader.
Page layout and advertising on the pages is distracting.
Potential Effectiveness as a Teaching Tool
The material is clear enough to let the student go through it unaided. It has some graphics to support the visual learner.
Links provide students with possibility to explore the subject in greater detail.
Good presentation of material.
Although this site does not sell directly, it has commercial interests represented in some of its links related to this topic. The first page has an "here's an idea" section that looks like it might be an activity. It is a commercial interest. Due to the highlighted terms going to a subject matter module rather than a glossary, the student might be distracted. There are no activities, summaries or tests of knowledge gained.
Too much advertising surrounding content, can be overly distracting from concepts being presented.
Ease of Use for Both Students and Faculty
The material is easy to access and to navigate through. Relatively simple explanation. Easy to use.
The material is crowded with commercial interests. Pages are too short, requiring too frequent clicks on next button. A lot of short pages that have to be navigated.