Exam 5: Data Storage Technology

With current technology, secondary storage speed is typically faster than primary storage speed.

Modern computers use memory implemented with ____.

Optical storage devices store bit values as variations in ____________________.

Disk drives share one set of read/write circuits among all read/write heads.

Serial access time depends on the current position of the read/write mechanism and the position of the target data item in the storage medium.

Coercible material per sector is greater at the center than in the platter edge.

The ____, a newer packaging standard, is essentially a SIMM with independent electrical contacts on both sides of the module.

Primary storage extends the limited capacity of CPU registers.

____ is the sum of average access delay and the time required to read a single sector.

A ____ device isn't restricted to any specific order when accessing data.

Current optical storage devices use a(n) ____________________ storage medium.

To increase capacity per platter, disk manufacturers divide tracks into two or more zones and vary the sectors per track in each zone.

A disk drive's data ____________________ rate is a summary performance number combining the physical aspects of data access with the electronic aspects of data transfer to the disk controller or system.

512- and 4096-byte blocks are the most common data transfer units for magnetic disks.

Sony and Philips originally developed compact disc (CD) technology for storing and distributing music in the ____ format.

The surface area allocated to store on a bit is called the ____.

A(n) ____ is a ribbon of plastic with a coercible (usually metallic oxide) coating.

Multiple hard drives can be enclosed in a single storage cabinet; this arrangement is referred to as a ____.

Average access time is computed under the assumption that two consecutive accesses are sent to ____________________ locations.

​A(n) ____________________ is one concentric circle of a platter, or the surface area that passes under a read/write head when its position is fixed.