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| A reference to the speed of a networking link. Its origins come from earlier communications technology in which the range, or width, of the frequency band dictated how fast communications could occur. |
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| The low-order 4 bits of the configuration register in a Cisco router. The value in the boot field in part tells the router where to look for a Cisco IOS image to load. |
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| The speed at which a serial link encodes bits on the transmission medium. |
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| In Cisco routers, a 16-bit, user-configurable value that determines how the router functions during initialization. In software, the bit position is set by specifying a hexadecimal value using configuration commands. |
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| A file that contains the IOS (internetwork Operating System). |
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| Power-on self-test (POST) |
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Definition
| The process on any computer, including routers and switches, in which the computer hardware first runs diagnostics on the required hardware before even trying to load a bootstrap program. |
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| A low-level operating system that can be loaded into Cisco routers for several seldom needed maintenance tasks, including password recovery and loading a new IOS when Flash memory has been corrupted. |
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Definition
| A limited-function version of IOS stored in ROM in some older models of Cisco routers, for the purpose of performing some seldom needed low-level functions, including loading a new IOS into Flash memory when Flash has been deleted or corrupted. |
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Term
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Definition
| A simple computer program that activates a more complicated system of programs. In the start up process, a small program initializes and tests that a basic requirement of hardware, peripherals and external memory devices are connected. It then loads a program from one of them and passes control to it, thus allowing the loading of larger programs (such as an OS). |
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