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HP Traffic Director sa7220 User Manual

Page 338

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G L O S S A R Y

HP Traffic Director Server Appliances User Guide

326

DNS

Domain Name Server. A mechanism used in the Internet for
translating the names of host machines into addresses.

Eligible Server

A server in a lower priority service’s server pool.

Fulfillment Server

A server that stores content and runs applications to respond to user
requests

Heartbeat

A signal acknowledging the existence/operation of SA8220. The
heartbeat command enables the SA8220 to display a message on the
console every heartbeat interval.

HTTP

Hypertext Transfer Protocol: the protocol used between a web
browser and a server to request a document and transfer its contents.

HTTPS

HTTP exchanged over an SSL-encrypted session

IP

Internet Protocol

IP Address

A unique identifier for a node on an IP network. Expressed in “dotted
decimal” notation. For example: 10.0.0.1.

IP Service

A network-accessible, IP-accessible Application Protocol. For
example: HTTP, FTP, and the like. For administration purposes,
services are identified by Virtual IP:Port.

KB

Kilobytes, or thousands of bytes, of data

Key

A public key and private key pair used to encrypt/decrypt messages

Key Strength

Length, in bits, of keys used in data encryption or authentication. For
example: 56, 128, 512.

Keypair

Matching public and private keys

LDAP

Lightweight Directory Access Protocol -- a protocol for accessing
common directory information

Load Balancing

The distribution of processing and communications activity across a
computer network so that no single device is overwhelmed. Load
balancing is particularly important for networks on which it is
difficult to predict the volume of requests likely to be issued to a
server. Busy Web sites typically employ two or more Web servers in
load balancing roles.

MB

Megabytes, or millions of bytes, of data