The command is: clock rate 56000
So it will appear on the command line interface as:
Router(config-if)# clock rate 56000
Reference: Networking by Jeffrey Beasley Chapter 6 page 216.
HDLC
The equipment with the "n" designation can transmit data at twice the speed of "g" routers and is more than five times as fast as "b" wireless routers.
It means the data can be transfer serially.i.e ,one by one. So it is less in speed.
Speed... a serial connection can only send one piece of data at a time. Parallel connections have multiple data 'channels' sending data simultaneously 0- which increases the data rate considerably.
routers
Modern networks used two devices for the data packets within the network will flow easily. The two devices are the routers and switches.
To verify if a serial interface is operating as a Data Terminal Equipment (DTE) or Data Communication Equipment (DCE), you can use the command show controllers in Cisco IOS. This command displays detailed information about the serial interface, including whether it is configured as a DTE or DCE. The output will typically indicate the role of the device, and a DCE interface will often show the clock rate configuration.
it is a communication port which recives and sends data serialy
Parallel data transmission is faster compared to serial data transmission. The speed of a parallel link is equal to the number of bits sent multiplied by the bit rate of each individual path.
Serial 0/1 is up, line protocol is down
A disadvantage of cheap wireless routers would be poor quality of speed because the connection can be interfered with due to other waves surrounding it. Another would be security worries as people within the vicinity could gain access to your private data.
serial chip