CompTIA A+ Essentials Quiz About Microprocessors!
This is the basic practice test for CompTIA A+ Essentials. Are you really a computer geek? Do you really possess full-fledged technical knowledge when it comes to Hardware and microprocessors? If yes, then prove yourself by attempting this quiz and assess yourself where you stand. Try to score more. So, let's try out this quiz. All the best!
- 1.
Which connector is being used on a serial port?
- A.
9-pins male DB connector
- B.
15-pins male DB connector
- C.
25-pins female DB connector
- D.
50-pins male DB connector
- E.
20-pins female DB connector
Correct Answer
A. 9-pins male DB connectorExplanation
The correct answer is 9-pins male DB connector. This connector is commonly used on a serial port. It has 9 pins and is designed to connect to a male port on the device. The DB connector is a type of D-subminiature connector and is widely used for serial communication.Rate this question:
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- 2.
What is flowcontrol?
- A.
The possibility for a device to ask another device to stop sending data for a while.
- B.
The possibility to change the flow of a port.
- C.
Changing data transmission.
- D.
Controlling the modem.
- E.
Converting analog data to digital data.
Correct Answer
A. The possibility for a device to ask another device to stop sending data for a while.Explanation
Flow control refers to the capability of a device to request another device to pause transmitting data temporarily. This allows the receiving device to manage its data buffer and prevent data loss due to overflow. By implementing flow control, a device can regulate the rate at which data is transmitted, ensuring efficient and reliable communication between devices.Rate this question:
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- 3.
What does SSP stand for?
- A.
Standard Serial Port
- B.
Standard Serial Program
- C.
Socket Serial Protocol
- D.
Standard Serial Programming
- E.
Socket Standard Port
Correct Answer
A. Standard Serial PortExplanation
SSP stands for Standard Serial Port. This term refers to a standard interface that allows communication between a computer and external devices, such as printers or modems, using a serial connection. The other options listed do not accurately represent the acronym SSP.Rate this question:
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- 4.
What does ESP stand for?
- A.
Enhanced Serial Port
- B.
Enhanced Socket port
- C.
Enhanced Serial Protocol
- D.
Enhanced Standard Protocol
- E.
Enhanced Standard Port
Correct Answer
A. Enhanced Serial PortExplanation
ESP stands for Enhanced Serial Port. This acronym refers to a technology that enhances the capabilities and functionality of a serial port, which is a hardware interface used for connecting devices such as computers and peripherals. The term "enhanced" suggests that this version of the serial port offers improved features and performance compared to the standard serial port.Rate this question:
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- 5.
What Does UART stand for?
- A.
Universal Asynchronous Remote Transmitter
- B.
Uni Asynchronous Receiver Transmitter
- C.
Universal Asynchronous Receiver Transport
- D.
Universal Asynchronous Receiver Transmitter
- E.
Universal Asynchronous Resolution Transmitter
Correct Answer
D. Universal Asynchronous Receiver TransmitterExplanation
UART stands for Universal Asynchronous Receiver Transmitter. It is a hardware device that allows for serial communication between a computer and other devices. The term "asynchronous" refers to the fact that the data is transmitted without the use of a clock signal. The UART is responsible for converting parallel data from the computer into serial data that can be transmitted over a communication line, and vice versa. It is commonly used in applications such as serial communication ports, modems, and microcontrollers.Rate this question:
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- 6.
What does the UART chip do?
- A.
Converts serial data to IDE device
- B.
Converts the analog data to digital data and digital data to analog data.
- C.
Transmits data over the phone line.
- D.
Converts a serial port to a serial ATA device port
- E.
Converts the parallel data to serial data and serial data to parallell data.
Correct Answer
E. Converts the parallel data to serial data and serial data to parallell data.Explanation
The UART chip is responsible for converting parallel data to serial data and vice versa. This is necessary because many devices, such as computers, use parallel data (multiple bits sent simultaneously) while communication lines typically use serial data (bits sent one after another). The UART chip allows these devices to communicate by converting the data between these two formats.Rate this question:
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- 7.
How many buses are connected as part of the 8085A microprocessor?
- A.
2
- B.
3
- C.
5
- D.
8
Correct Answer
B. 3Explanation
The 8085A microprocessor is connected to 3 buses.Rate this question:
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- 8.
The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus
- A.
Control Bus
- B.
Control Instructions
- C.
Address Decoder
- D.
CPU
Correct Answer
C. Address DecoderExplanation
An address decoder is responsible for ensuring that only one integrated circuit (IC) is active at a time. It does this by decoding the address signals received from the CPU and selecting the appropriate IC to respond. This prevents a bus conflict where two ICs try to write different data to the same bus simultaneously, which could result in data corruption or system malfunctions.Rate this question:
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- 9.
Single-bit indicators that may be set or cleared to show the results of logical or arithmetic operations are the:
- A.
Flags
- B.
Registers
- C.
Monitors
- D.
Decisions
Correct Answer
A. FlagsExplanation
Flags are single-bit indicators that can be set or cleared to represent the results of logical or arithmetic operations. They are used to store information about the state of a computer system or a specific program. Flags are commonly used in computer architecture to indicate conditions such as carry, zero, overflow, or sign. They play a crucial role in decision-making processes and control flow within a program. Registers, monitors, and decisions are not specifically designed to store the results of logical or arithmetic operations, making them incorrect choices.Rate this question:
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- 10.
The technique of assigning a memory address to each I/O device in the computer system is called:
- A.
Memory-mapped I/O
- B.
Ported I/O
- C.
Dedicated I/O
- D.
Wired I/O
Correct Answer
A. Memory-mapped I/OExplanation
Memory-mapped I/O is a technique where each I/O device is assigned a memory address in the computer system. This allows the I/O devices to be accessed and controlled using the same instructions and data transfer mechanisms as memory. This simplifies the programming and communication between the CPU and the I/O devices, as they can be treated as if they were part of the memory address space. This technique is commonly used in modern computer systems to efficiently manage I/O operations.Rate this question:
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Mar 22, 2022Quiz Edited by
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Feb 22, 2008Quiz Created by
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