Comptia A+ 220-801 Chapter 2 Flashcards
What are used for permanent storage and quick access.
PG 70
Hard disk drive (HDD) systems (hard disks or hard drives for short)
What controls the drives? PG 70
Controller
This is the translator, converting signals from the controller to signals the computer can understand. PG 70
Host bus adapter (HBA)
Name some of the components of a hard drive? pg 72
Platters Read/write heads Tracks Sectors Cylinders Clusters (allocation units)
Name the 5 speeds of a conventional HDD? pg 74
5400 rpm,7200 rpm,10,000 rpm,12,000 rpm,15,000 rpm
is a magnetic storage medium that uses a diskette made of thin, flexible plastic enclosed in a protective casing.
floppy disk (or floppy diskette)
What are the 3 types of Optical Drives? pg pg 78
CD,DVD,Blu Ray
What does RAID Stand for and describe what you can accomplish with RAID
RAID stands for Redundant Array of Independent Disks. It’s a way of combining the storage power of more than one hard disk for a special purpose, such as increased performance or fault tolerance.
What is RAID 1? pg 93
Also known as disk mirroring. RAID 1 is a method of producing fault tolerance
by writing all data simultaneously to two separate drives. If one drive fails, the other contains
all the data and will become the primary drive.
What is RAID 5? pg 93
Combines the benefits of both RAID 0 and RAID 1, creating a redundant striped volume set. Unlike RAID 1, however, RAID 5 does not employ mirroring for redundancy.
What are the 5 tape back up formats and whats the max capacity can each hold? pg 94
Quarter-inch Cartridge (QIC) 200KB to 525MB
Digital Linear Tape (DLT) Up to 160GB
Eight Millimeter (Exabyte) Up to 800GB
Digital Audio Tape (DAT)/Digital Data
Storage (DDS) Up to 300GB
Linear Tape-Open (LTO) Up to 1.5TB (12.8TB planned)
What are the Different Sizes and Types of Floppy Diskette?
pg77
51⁄4" DD 360KB 51⁄4" HD 1.2MB 31⁄2 "DD 720KB 31⁄2 "HD 1.44MB 31⁄2 "ED 2.88MB
What are Platters? PG 70
is the circular disk on which magnetic data is stored in a hard disk drive.
The original PC floppy diskette, which used a platter that was 51⁄4 g in diameter and known as this? pg 76
minifloppy diskette,
Flash Memory pg 95
This is an electronic non-volatile computer storage medium that can be electrically erased and reprogrammed.
Introduced by Toshiba in 1984, flash memory was developed from EEPROM (electrically erasable programmable read-only memory)
In what year was a SIM Card Introduced? pg 96
1991
What kind of storage device did the flash drive replace?
Floppies, Jaz and Zip
The original power connectors attached to the early PC motherboards were known collectively as the pg109
AT system connector
What is NAS ? PG 102
A network-attached storage (NAS) device is a server that is dedicated to nothing more than file sharing.
Hot Swapping PG 102
are terms used to describe the functions of replacing computer system components without shutting down the system. More specifically, hot swapping describes replacing components without significant interruption to the system, while hot plugging describes the addition of components that would expand the system without significant interruption to the operation of the system.[
The device in the computer that provides this power is
the PG 107
Power Supply
is the vernacular term for a two-piece pin and socket interconnection, most frequently disk drive connectors. PG 110
Molex Connector
A Berg connector is a brand of electrical connector used in computer hardware. Berg connectors are manufactured by Berg Electronics Corporation of St. Louis, Missouri, a division of Framatome Connectors International.
Berg connector
is a wiring scheme in which multiple devices are wired together in sequence or in a ring.[1] Other than a full, single loop, systems which contain internal loops cannot be called daisy chains.
daisy-chaining.
