Which of the following are removable storage devices/media? Each correct answer represents a
complete solution. Choose three.
A.
SD card
B.
Hard disk drive
C.
USB Pen drive
D.
CD-ROM
Explanation:
CD-ROM, SD card, USB Pen drive, floppy disk, etc., are removable storage media.
CD-ROM (Compact Disc Read-Only Memory) is a type of removable storage optical media. It can
store up to 1GB of data, although most
common CD-ROMs store 700MB of data. It comes in a standard size and format, so users can load
any type of CD-ROM into any CD drive
or CD-ROM player. Once data is written to a CD-ROM, it cannot be erased or changed.
SD card is a removable storage device. Secure Digital (SD) card is a non-volatile memory card format
used in portable devices such as
mobile phones, digital cameras, and handheld computers. SD cards are based on the older
MultiMediaCard (MMC) format, but they are a
little thicker than MMC cards. Generally an SD card offers a write-protect switch on its side. SD cards
generally measure 32 mm x 24 mm
x 2.1 mm, but they can be as thin as 1.4 mm. The devices that have SD card slots can use the thinner
MMC cards, but the standard SD
cards will not fit into the thinner MMC slots. Some SD cards are also available with a USB connector.
SD card readers allow SD cards to
be accessed via many connectivity ports such as USB, FireWire, and the common parallel port.
USB Pen drive is a removable storage device. A pen drive is also known as a USB flash drive. It is a
small device used to transfer datafrom one computer to another through USB ports. Pen drives are available in various capacities.
When a pen drive is plugged into the
USB port, Windows Explorer shows it as a removable drive.
Answer B is incorrect. The hard disk drive is not a removable storage media. It is installed inside the
computer case. It can store large
amounts of data and provides fast read/write performance. HDD can be connected to a computer
with the Integrated Device Electronics (IDE),
Small Computer System Interface (SCSI), and SATA interface. It consists of inflexible platters coated
with material in which data is recorded
magnetically with read/write heads.
Note: Only external hard disk drives are removable devices.