Question

In computer system, RS-232 is a standard which applies for
1. Parallel port
2. Serial port
3. Network
4. None of these above

Answer 1

Correct Answer - Option 2 : Serial port

RS-232 applies for serial communication transmission of data.

RS 232 C	USB (Universal serial Bus)
It can connect with lower range of periphenals Comparatively slower transfer rate E.g. \(20\;k\;band\;\left[ {band = \frac{{symbol}}{{sec}}} \right]\) It does NOT support Hot plug ability Here PC can not detect the process or absence	USB can cannot with higher range of peripehenals. Comparatively higher transfer rate. E.g. 12 mbps It support hot plug ability Here PC can detect the process or absence

Note:

• Hot plug ability : When computer’s opening system automatically recognize the presence or absence of any device, while computer is running.
• RS232 C

RS → Recommended standard for serial communication

C → virsion (3rd)