Exam 8: Digital Storage

Discuss the life span of an optical disc, including the tips for proper care of optical discs.

COGNITIVE ASSESSMENT You are using an optical disc on your game console. Which of the following is it most likely to be?

A(n)____________________ occurs when a read\write head touches the surface of a hard disk platter, such as that shown in the accompanying figure, usually resulting in a loss of data and sometimes loss of the entire drive.

Optical discs store items by using microscopic lands (indentations)that are in the middle layer of the disc.

The ____________________ is a hard disk interface that can support up to eight or fifteen peripheral devices.

COGNITIVE ASSESSMENT You are looking for the best protection against data loss. Which of the following will you use?

Some DVDs are double-sided.

A DVD-ROM uses all of the following to achieve a higher storage capacity than a CD-ROM EXCEPT ____.

COGNITIVE ASSESSMENT What technology works with specially coated optical discs to etch labels directly on the disc?

USB technology is much faster than the eSATA interface.

As shown in the accompanying figure, a disk's storage locations consist of wedge-shaped sections, which break the tracks into small arcs called ____________________.

Enterprise storage often uses ____________________ technology as the interface that connects the devices to the network because it has much faster transmission rates than SCSI and other interfaces.

COGNITIVE ASSESSMENT If your computer or printer does not have a built-in slot for memory cards, you can purchase a device that can access the data stored on the memory card. What is that device called?

RAID levels are hierarchical.

An active RFID tag cannot send a signal until the reader activates the tag's antenna by sending out electromagnetic waves.

COGNITIVE ASSESSMENT You want a form of backup that copies all program and data files. Which of the following will you use?

COGNITIVE ASSESSMENT What does NAS stand for?