Neither is the case for traditional CBTs which require programming expertise. Scripts are not as easy and intuitive as HTML but learnable with a good reference book and some practice. No technology can assure standardization of testing conditions if people are taking the test in the privacy of their own home. A test's web appropriateness is inversely proportionate to its stakes. Only use disclosed, non-confidential items.
Disk storage is difficult to realize technologically.
Low stakes, test takers have no vested interest in distorting their true scores. Requires supervision but need for item confidentiality is low for items based on real-world tasks. Requires supervision and item confidentiality. Not recommended for WBT at this time. Manuscript in preparation.