User guide

Glossary 463
Encryption
The translation of data into a secret code. Encryption is the most effective way to achieve data
security. To read an encrypted file, you must have access to a secret key or password that enables
you to decrypt the file. Unencrypted data is called plain text. Encrypted data is referred to as cipher
text.
There are two main types of encryption:
• Asymmetric encryption (also called public-key encryption)
• Symmetric encryption.
External Authentication Server
Optional component(s) outside of the DSView system that enable you to select an authentication
method. The DSView Server brokers authentication requests (LDAP, RADIUS and so on).
FLASH
A special type of EEPROM that can be erased and reprogrammed in blocks instead of one byte at a
time. The BIOS and applications of many modern applications are stored on a flash memory chip
so that it may easily be updated (if necessary).
Hotkey
A keystroke that may be assigned and used to cause a specific action or set of actions to occur
within a user interface. By assigning the action(s), the keystroke’s normal operation (for example,
pressing F1 to open help) is superseded.
Hub DSView Server
A DSView Server that is responsible for maintaining the master copy of the DSView System
database. Only one DSView Server in a DSView system can be configured as the Hub DSView
Server. Spoke DSView Servers in a DSview System perform database replication with the Hub
DSView Server. The Hub DSView Server acts as the traffic cop for database replication between
itself and all of the other DSView Servers in a DSView System.
NOTE: The Hub DSView Server and a Spoke DSView Server offer the same DSView software functionality to a
DSView user. The distinction of "Hub" or "Spoke"only has to do with the database replication role the server
plays and not with the DSView software functionality the server offers to the DSView user.
Hypertext Markup Language (HTML)
A markup language used to create hypertext documents that are portable from one platform to
another on the World Wide Web (WWW). HTML files are ASCII text files with embedded codes
(markup tags) to indicate formatting and hypertext links. Web browsers interpret and display
HTML documents.