Cyclades 2.3.0 Authentication, Basic In/Out System, Bios, Baud Rate, Boot, Break Signal, Checksum

Models: 2.3.0 ACS48

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Glossary

Authentication

The process by which a user’s identity is checked within the

 

network to ensure that the user has access to the requested

 

resources.

Basic In/Out System

Chips on the motherboard of a computer contain read only

(BIOS)

memory instructions that are used to start up a computer. The

 

operating system of a PC also makes use of BIOS

 

instructions and settings to access hardware components such

 

as a disk drive. Some BIOS/CMOS settings can be set to scan

 

for viruses, causing problems for some installation programs.

Baud Rate

The baud rate is a measure of the number of symbols

 

(characters) transmitted per unit of time. Each symbol will

 

normally consist of a number of bits, so the baud rate will

 

only be the same as the bit rate when there is one bit per

 

symbol. The term originated as a measure for the

 

transmission of telegraph characters. It has little application

 

today except in terms of modem operation. It is

 

recommended that all data rates are referred to in bps, rather

 

than baud (which is easy to misunderstand). Additionally,

 

baud rate cannot be equated to bandwidth unless the number

 

of bits per symbol is known.

Boot

To start a computer so that it is ready to run programs for the

 

user. A PC can be booted either by turning its power on,

 

(Cold Boot) or by pressing Ctrl+Alt+Del (Warm Boot).

Break Signal

A break signal is generated in an RS-232 serial line by

 

keeping the line in zero for longer than a character time.

 

Breaks at a serial console port are interpreted by Sun servers

 

as a signal to suspend operation and switch to monitor mode.

Checksum

A computed value which depends on the contents of a block

 

of data and which is transmitted or stored along with the data

 

in order to detect corruption of the data. The receiving system

 

recomputes the checksum based upon the received data and

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Cyclades 2.3.0, ACS48 user manual Authentication, Basic In/Out System, Bios, Baud Rate, Boot, Break Signal, Checksum