- See Hoot & Holler (H&H).
- One who uses a computer beyond its original design to accomplish
a task. See also cracker.
- The first five bytes of an ATM
cell, containing information on flow
control, virtual path and channel, payload type, cell urgency,
and a header-only checksum.
- See Hierarchical File System (HFS).
- Hierarchical File System (HFS)
- (General) A structured, hierarchical file
system, such as the fast file system
(FFS) or the Unix File System (UFS).
(Specific) The hierarchical file system used on the Macintosh system
in MacOS 6 through MacOS 9. Deprecated in MacOS X.
- High Performance Peripheral Interface (HiPPI)
- A high-speed (800Mb/sec or 1.6Gb/sec, depending on the width) network
interface connection, typically to one or more mainframes or
- HINFO record
- See DNS record types, HINFO record.
- See High Performance Peripheral Interface (HiPPI).
- High Speed Serial Interface (HSSI)
- A serial interface that runs on high speeds.
- Hoot & Holler (H&H)
- A dedicated point-to-point voice facility between international
offices of a trading facility.
- A direct path from one node to another, with a hop count of 1. See
- hop count
- A measure of distance between two nodes in an internet. A hop count
of n means there are n-1 gateways between the source and
the destination nodes.
- A computer, router, or workstation which may or may not be on a network.
- host alias
- A nickname for a host, such as "chimailhost" for the machine in Chicago
that handles mail.
- host part
- The host-specific portion of a CIDR address.
The host part identifies the specific interface on a host.
- hot spare
- A disk partition reserved for use in a stripe or mirror metadevice;
in case an existing partition fails use a hot spare to recover data in
place with no downtime and no data loss. See also Disk
- See High Speed Serial Interface (HSSI).
- See HyperText Markup Language (HTML).
- See HyperText Transport Protocol (HTTP).
- Network hardware than centralizes a number of network terminal or
workstation connections in a single area.
- human engineering
- See ergonomics.
- A method of presenting information where selected words in online
text can be "expanded" into more information.
- HyperText Markup Language (HTML)
- A subset of the US government's Standardized
General Markup Language (SGML), HTML is the underlying base
of the World Wide Web (WWW). Even though
SGML has a static definition, HTML is expandable because SGML
defines a process for extending its subsets of tags. Defined in
- HyperText Transport Protocol (HTTP)
- The protocol in the Internet Protocol (IP)
family used to transport hypertext documents across an internet.
Defined in RFC 1945
(v1.0) and RFC 2616