A common mistake in 9L0-509 estimating the cost of a particular ICT educational application is to focus too much on initial fixed costs—purchase of equipment, construction or retrofitting of physical facilities, initial materials production, and the like. Testking 9L0-402 But studies of the use of computers in classrooms, for example, show that installation of hardware and retrofitting of physical facilities account for only between 40% to 60% of the full cost of using the computers over their lifetime, or its total cost of ownership. In fact, while at first glance it may seem that the initial purchase of hardware and software is the costliest part of the process, 9L0-509 the bulk of the total cost of ownership is spread out over time, with annual maintenance and support costs (known as variable or recurrent costs) constituting between 30% to 50% of the total cost of hardware and software. The cost of professional development, another variable cost, also accumulates over time. For computer-based approaches the total cost of ownership therefore includes:
FIXED COSTS
* Retrofitting Pass4sure 9L0-402 of physical facilities
* Hardware and networking
* Software
* Upgrades and replacement (in about five years)
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