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Passive cables are copper cables that do not have an electronic circuit, and are prone to data degradation. Passive cables are also typically bi-directional, while active cables that convert a signal usually only work in one direction. There are two main types of signal conditioning used in active electrical cables: re-driver-based and re-timer.
Adapters (sometimes called dongles) allow connecting a peripheral device with one plug to a different jack on the computer. They are often used to connect modern devices to a legacy port on an old system, or legacy devices to a modern port. Such adapters may be entirely passive, or contain active circuitry. A common type is a USB adapter.
An active USB to PS/2 adapter consists of logic to translate signals (active in the incremental sense) A passive mixer consists of just resistors (incrementally passive), whereas an active mixer includes components capable of gain (active). In audio work one can also find both (incrementally) passive and active converters between balanced and ...
Active networking is a communication pattern that allows packets flowing through a telecommunications network to dynamically modify the operation of the network. Active network architecture is composed of execution environments (similar to a unix shell that can execute active packets), a node operating system capable of supporting one or more ...
In a passive PoE system, the injector does not communicate with the powered device to negotiate its voltage or wattage requirements but merely supplies power at all times. Common 100 Mbit/s passive applications use the pinout of 802.3af mode B (see § Pinouts ) – with DC positive on pins 4 and 5 and negative on 7 and 8, and data on 1 and 2 ...
Direct attach cables (DAC) exist in passive (up to 7 m), active (up to 15 m), and active optical (AOC, up to 100 m) variants. 10 Gbit/s SFP+ modules are exactly the same dimensions as regular SFPs, allowing the equipment manufacturer to re-use existing physical designs for 24 and 48-port switches and modular line cards .
Active and passive investing each have some positives and negatives, but the vast majority of investors are going to be best served by taking advantage of passive investing through an index fund.
Illustration of starting a passive connection using port 21. FTP may run in active or passive mode, which determines how the data connection is established. [9] (This sense of "mode" is different from that of the MODE command in the FTP protocol.) In active mode, the client starts listening for incoming data connections from the server on port M.