User guide

Encryption
Encryption is 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 (also called public-key
encryption) and symmetric.
External authentication server
The external authentication server is an optional component(s) outside of the DSView
3 software system that enables you to select an authentication method. The DSView 3
server brokers authentication requests (LDAP, RADIUS and so on).
Flash
Flash is 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).
FRU (Field Replaceable Unit)
An FRU is a module or component which is typically completely replaced as part of a
field service repair operation.
Graceful shutdown
A graceful shutdown is identical to a shutdown performed by selecting Start -
Shutdown and then selecting Shut down in the Shut Down Window dialog box.
Hotkey
A hotkey is 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normal operation (for example, pressing F1 to open help) is superseded.
HTML (Hypertext Markup Language)
HTML is 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.
HTTP (Hypertext Transfer Protocol)
HTTP is the underlying protocol by which WWW clients and servers communicate.
HTTP is an application-level, generic, stateless, object-oriented protocol for distributed,
450 DSView® 3 Software Installer/User Guide