Computer Fundamental Miscellaneous - Study Mode

[#566] In MODEMS
Correct Answer

(B) A digital signal changes some characteristic of a carrier wave

Explanation

Solution: A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. Source : webopedia.com

[#567] Which is a secondary memory device?
Correct Answer

(C) Floppy disk

Explanation

Solution: Floppy Disk : A floppy disk, also known as a floppy, diskette, or simply disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles. Floppy disks are read and written by a floppy disk drive (FDD). Source : wikipedia.org

[#568] A storage device which is used to store data & information external to the main storage is known as
Correct Answer

(B) Backing storage

Explanation

Solution: The term backing storage refers to any non-volatile data storage that will retain a computer's data even after the computer is powered off. Common types of backing storage devices are hard drives, SSD, external hard disk drives, optical media such as CD or DVD, and flash media such as thumb drives and memory sticks.

[#569] In a PC, how much memory is available to application software?
Correct Answer

(C) 640 KB

Explanation

Solution: Application software, or app for short, is software that performs specific tasks for an end-user. In a PC, 640 KB memory is available to application software.

[#570] For a memory system, the cycle time is
Correct Answer

(B) longer than the access time

Explanation

Solution: Cycle time is the time, usually measured in nanosecond s, between the start of one random access memory (RAM) access to the time when the next access can be started. For a memory system, the cycle time is longer than the access time .