H's Flashcards
HAV
(Hardware Assisted Virtualization)
Instruction set extensions (Intel VT-x and AMD-V) that facilitate the operation of virtual machines.
HBA
(host bus adapter)
A component allowing storage devices to exchange data with a computer system using a particular interface (PATA, SATA, SCSI, and so on). Motherboards will come with built-in host adapters and more can be added as expansion cards if necessary.
HDD
(Hard Disk Drive)
A device providing persistent mass storage for a PC (saving data when the computer is turned off).Data is stored using platters with a magnetic coating that are spun under disk heads that can read and write to locations on each platter (sectors). A HDD installed within a PC is referred to as the fixed disk. HDDs are often used with enclosures as portable storage or as Network Attached Storage (NAS).
HDMI
(High Definition Multimedia Interface)
High-specification digital connector for audio-video equipment.
HFC Cable
(Hybrid Fiber Coax cable)
A cable Internet connection is usually available along with a cable telephone/television service (Cable Access TV [CATV]). These networks are often described as Hybrid Fiber Coax (HFC)as they combine a fiber optic core network with coax links to consumer premises equipment, but are more simply just described as “cable.” Consumers interface with the service via a cable “modem”(actually functioning more like a bridge).
HIDs
(Human Interface Devices)
Peripherals that enable the user to enter data and select commands.
HT
(HyperThreading)
Intel CPU architecture implemented on many Pentium 4 models.HT exposes two or more logical processors to the OS, delivering performance benefits similar to SMP.
HTPC
(Home Theater PC)
A PC used in place of consumer appliances such as Personal Video Recorders (PVRs) to watch and record TV broadcasts and play movies and music.
HTT
(HyperThreading technology)
Intel’s term for HyperThreading.
HTTP
(HyperText Transfer Protocol)
The protocol used to provide web content to browsers. HTTP uses port 80. HTTPS(ecure) provides for encrypted transfers, using SSL/TLS and port 443.
HTTPS
(HTTP Secure)
A protocol that provides for encrypted transfers, using SSL/TLS and port 443.
HVAC
(Heating, Ventilation, and Air Conditioning)
The building environmental heating and cooling services and the control of those systems.