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DVD-ROM employs same principle as a CD-ROM for reading and writing. However a smaller wavelength laser beam is used. Total capacity of DVD-ROM is 8.5GB. In double-sided DVD-ROM two these disks are stuck back to back that allows recording on both sides. This requires disk to be reversed to read reverse side. With both side recording and with each side storing 8.5GB total capacity is 17GB.
In both DVD-ROMs and CD-ROMs the density of data stored is constant throughout spiral track. In order to attain a constant readout rate the disk should rotate faster near centre and slower at outer tracks to maintain a constant linear velocity (CLV) between head and CD-ROM/DVD-ROM platter. So CLV disks are rotated at variable speed. Compare it with mechanism of constant angular velocity (CAV) in which disk is rotated at a constant speed. So in CAV the density of information storage on outside sectors is low.
Explain about the term Middleware. Middleware is the term frequently used to explain the application or business logic present within an application server. Unfortunately, simi
Problem: (a) (i) Distinguish between Complex Type and Simple Type elements. (ii) List two benefits while using XSDs in XML data modeling. (b) Both XML schema and XSL u
A verification point is a point in a script that you make to confirm the state of an object across builds of the application-under-test.
What are bags and sequences? A bag is a collection of elements with duplicates permitted. A sequence is an ordered collection of elements with duplicates permitted.
The alignment of a type 'c' field in a report is? ? Left Aligned.
data warehousing Data warehouse means Subject oriented Integrated Time variant Non-volatile collection of data for management's decisions. It is h
Which technique is an encryption technique? Ans. Block cipher technique and also Steam cipher technique is an encryption technique.
Register Transfer Micro-operations These micro-operations as the name proposes transfer information from one register to another. The information doesn't change during these mi
REPRESENTATION OF POYNOMIAL OF 2 OR MORE VARIABLES USING ARRAY
what is the theory used to check whether a number is negative or positive?
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