Q. What is the minimum number of wires needed to send data over a serial communication?
Computer Science :: Networking What is the minimum number of wires needed to send data over a serial communication link layer? E. 32.
Q. What is a DB9 null modem cable?
A null modem cable is a RS-232 serial cable where the transmit and receive lines are crosslinked. In some cables there are also handshake lines crosslinked. In many situations a straight-through serial cable is used, together with a null modem adapter. The adapter contains the necessary crosslinks between the signals.
Q. What is a null modem connection *?
A null modem serial cable (frequently called a crossover cable) is used to connect two DTE devices together without the use of a DCE device in between. For this to happen, the Transmit (TXD) and Receive (RXD) pins on one of the serial connectors are flipped.
Q. What is a 9 pin connector for?
The DB9 connector (originally named DE-9) is an analog socket, with 9 pins, from the D-Subminiatures (D-Sub) connector family. The DB9 connector is mainly used in serial ports, allowing asynchronous data transmission according to the RS-232 standard (RS-232C).
Q. What is null modem configuration?
Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable. With a null modem connection the transmit and receive lines are crosslinked. Depending on the purpose, sometimes also one or more handshake lines are crosslinked.
Q. How many wires are needed in serial transmission?
two wires
A serial bus consists of just two wires – one for sending data and another for receiving. As such, serial devices should have two serial pins: the receiver, RX, and the transmitter, TX.
Q. What is the meaning of number of wires needed to send data over serial communication link layer?
The minimum number of wires needed to send data over a serial communication link is 2. Serial communication is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus.
Q. What is a null modem often used for?
Null modems were commonly used for file transfer between computers , or remote operation . Under the Microsoft Windows operating system, the direct cable connection can be used over a null modem connection.
Q. What does null modem mean?
Null Modem. Definition – What does Null Modem mean? A null modem is a specially designed cable that allows a “head-to-head” connection between two nearby serial devices (computers) through their communication ports (RS-232).
Q. What is a null modem cable?
A null modem cable. A null modem cable is a RS-232 serial cable where the transmit and receive lines are crosslinked. In some cables there are also handshake lines crosslinked. In many situations a straight-through serial cable is used, together with a null modem adapter. The adapter contains the necessary crosslinks between the signals.
