Black Box IT Pro LNA1000A, User Manual

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Black Box® IT Pro™ User Manual 385
Glossary
ADSL Asymmetric Digital Subscriber Line
ADSL uses standard phone lines to deliver high-speed data communications. ADSL uses the por-
tion of a phone line’s bandwidth not utilized by voice, allowing for simultaneous voice and data
transmission.
Bandwidth This term describes information-carrying capacity of telephone or network wiring. Bandwidth is
usually measured in bits per second.
Bit Binary Digit
The smallest unit of computerized data. A bit is represented as either 1 or 0.
Cable Modem Cable modems provide Internet access over cable TV networks (which use fiber-optic or coaxial
cables). They are generally much faster than modems that use phone lines.
Cache A copy of a program or data that is used for faster access.
See also Web Cache.
Certificate
Authority An issuer of Security Certificates used in SSL connections.
See also SSL.
Client A computer system or process that requests a service from another computer system or process.
Data Encryption Encrypting data is accomplished by applying a scrambling code that makes the data unreadable to
anyone who does not have a decryption key. Authorized personnel with access to this key can
unscramble it.
Data encryption is a useful tool against malicious users.