COMPUTER HARDWARE COMPONENTS FUNCTIONS
EXTERNAL AND INTERNAL STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Serial and Direct access
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Serial and Parallel access
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Direct and Parallel access
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None of the above
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Detailed explanation-1: -In this section we will look at the 2 main ways in which data is accessed, stored and read: Serial Access (also known as ‘sequential access) Direct Access (also known as ‘random access)
Detailed explanation-2: -There are three basic types of access methods used to manipulate the permanent and temporary database objects–Create, Scan, and Probe.
Detailed explanation-3: -selected Mar 31, 2020 by Punit01. In sequential access data is stored at random locations. In direct access data is stored at sequential locations.
Detailed explanation-4: -In sequential access, the operating system reads the file word by word in a sequential manner to enable quick access to the next entry. In direct access, there is no need to traverse all of the blocks that come before the required block to access the record.
Detailed explanation-5: -serial access A method of access to data in which blocks are read from the storage medium in the physical order in which they occur, until the required item is reached.