This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Serial Port”.
1. The mode of transmission of data, where one bit is sent for each clock cycle is ______
a) Asynchronous
b) Parallel
c) Serial
d) Isochronous
View Answer
Explanation: In the isochronous mode of transmission, each bit of the data is sent per each cycle.
2. The transformation between the Parallel and serial ports is done with the help of ______
a) Flip flops
b) Logic circuits
c) Shift registers
d) None of the mentioned
View Answer
Explanation: The Shift registers are used to output the data in the desired format based on the need.
3. The serial port is used to connect basically _____ and processor.
a) I/O devices
b) Speakers
c) Printer
d) Monitor
View Answer
Explanation: The serial port is used to connect the keyboard and other devices which input or output one bit at a time.
4. The double buffer is used for _________
a) Enabling retrieval of multiple bits of input
b) Combining the input and output operations
c) Extending the buffer capacity
d) None of the mentioned
View Answer
Explanation: None.
5. ______ to increase the flexibility of the serial ports.
a) The wires used for ports is changed
b) The ports are made to allow different clock signals for input and output
c) The drivers are modified
d) All of the mentioned
View Answer
Explanation: The ports are made more flexible by enabling the input or output of different clock signals for different devices.
6. UART stands for ________
a) Universal Asynchronous Relay Transmission
b) Universal Accumulator Register Transfer
c) Universal Asynchronous Receiver Transmitter
d) None of the mentioned
View Answer
Explanation: The UART is a standard developed for designing serial ports.
7. The key feature of UART is _________
a) Its architectural design
b) Its simple implementation
c) Its general purpose usage
d) Its enhancement of connecting low speed devices
View Answer
Explanation: None.
8. The data transfer in UART is done in ______
a) Asynchronous start stop format
b) Synchronous start stop format
c) Isochronous format
d) EBDIC format
View Answer
Explanation: This basically means that the data transfer is done in asynchronous mode.
9. The standard used in serial ports to facilitate communication is _____
a) RS-246
b) RS-LNK
c) RS-232-C
d) Both RS-246 and RS-LNK
View Answer
Explanation: This is a standard that acts as a protocol for message communication involving serial ports.
10. In a serial port interface, the INTR line is connected to _____
a) Status register
b) Shift register
c) Chip select
d) None of the mentioned
View Answer
Explanation: None.
Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.
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