FUNDAMENTALS OF COMPUTER

COMPUTER HARDWARE COMPONENTS FUNCTIONS

EXTERNAL AND INTERNAL STORAGE DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two characteristics of Direct (Random access):
A
Stores files so that they can instantly be accessed
B
No need to search through files to get to the one you want
C
Files are stored one by one in a sequence
D
Data are to be stored alphabetically and sorted in order
Explanation: 

Detailed explanation-1: -1. Sequential access media-which store records sequentially, one after the other. 2. Direct access storage devices (DASD)-which can store either sequential or direct access files.

Detailed explanation-2: -There are three ways to access a file into a computer system: Sequential-Access, Direct Access, Index sequential Method. It is the simplest access method. Information in the file is processed in order, one record after the other.

Detailed explanation-3: -Random access (more precisely and more generally called direct access) is the ability to access an arbitrary element of a sequence in equal time or any datum from a population of addressable elements roughly as easily and efficiently as any other, no matter how many elements may be in the set.

Detailed explanation-4: -Random access file in C enables us to read or write any data in our disk file without reading or writing every piece of data before it. In a random-access file, we may quickly search for data, edit it or even remove it.

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