18 Questions
What technology allows data to be recorded on two layers in optical discs?
Focusing mechanism
Which type of flash memory is primarily used in memory cards and USB flash drives?
NAND type
What is the main advantage of using flash memory as a replacement for hard disks?
Absence of mechanical limitations
What is the primary function of I/O buffers in a computer system?
Temporary storage for one block of data
Which buffering strategy involves the use of two buffers to overlap processing and I/O tasks?
Double buffering
What type of secondary storage device was developed from EEPROM and is electrically erasable and reprogrammable?
Flash memory
What is the primary advantage of secondary storage over primary storage?
Non-volatile data retention
Which storage device is characterized by being slow, cheap, stable, and large?
Secondary storage
What is a significant disadvantage of main memory compared to secondary storage?
Data loss during power failures
In terms of speed, how does secondary storage compare to main memory?
Main memory is faster
Which of the following best describes secondary storage?
Stable, cheap, large capacity
What characteristic of main memory makes it unsuitable for storing extremely large databases?
Small capacity
What is the primary function of grouping related information in file storage?
To minimize the number of trips to the disk
Which of the following is a property of files as highlighted in the text?
Data files persist after the program stops for later use
What are Direct Access Storage Devices (DASDs) primarily composed of?
Magnetic platters called disks
Which characteristic does NOT apply to secondary storage devices?
Secondary storage devices provide faster access to data than main memory
What is the primary purpose of Sharability in file properties?
To allow data stored in files to be shared by many programs and users simultaneously
In terms of size, what is a common characteristic of data files stored on secondary storage devices?
They are usually too large to fit into main memory
Test your knowledge on the focusing mechanism technology allowing data to be recorded on two layers in discs, and flash memory which is a non-volatile computer storage chip that can be reprogrammed. Learn about reading the second layer of a disc and the NAND type of flash memory.
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