To answer this question, we need to understand the concept of parity.

Parity is an extra bit stored with data in RAM that is used to check for errors when the data is read back. It is a simple error detection mechanism that helps ensure data integrity.

Let's go through each option to understand why it is correct or incorrect:

Option A) a byte stored in the FAT to indicate remaining slots - This option is incorrect because the byte stored in the File Allocation Table (FAT) is used to track the allocation of disk space, not to indicate remaining slots.

Option B) the optimal transmission speed of data over a CAT 5 cable - This option is incorrect because parity is not related to the transmission speed of data over a CAT 5 cable. Parity is a mechanism used for error detection, not for determining transmission speed.

Option C) a system for balancing the voltage coming out of the power supply - This option is incorrect because parity is not related to balancing the voltage from a power supply. It is primarily used for error detection in data storage and transmission.

Option D) an extra bit stored with data in RAM that is used to check for errors when the data is read back - This option is correct. As mentioned earlier, parity is an extra bit stored with data in RAM that is used to check for errors when the data is read back. It helps detect if any bit has been flipped or corrupted during storage or transmission.

Option E) the optimal transmission speed of data over a CAT 5 cable - This option is incorrect because parity is not related to the optimal transmission speed of data over a CAT 5 cable. Parity is solely a mechanism for error detection.

Therefore, the correct answer is option D.

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To answer this question, we need to understand what IRQ (Interrupt Request) is and how it is commonly assigned in computer systems.

IRQ is a mechanism used by computer systems to handle hardware interrupts. Each hardware device is assigned a specific IRQ number, which allows the system to prioritize and handle interrupts from different devices.

Now let's go through each option to determine the correct answer:

Option A) It's usually open - This option is incorrect because IRQ 1 is not commonly left open. It is typically assigned to a specific hardware device.

Option B) System timer - This option is incorrect because IRQ 0 is commonly assigned to the system timer, not IRQ 1.

Option C) Real-time clock - This option is incorrect because IRQ 8 is commonly assigned to the real-time clock, not IRQ 1.

Option D) Keyboard - This option is correct. IRQ 1 is commonly assigned to the keyboard. When you press a key on the keyboard, it generates an interrupt signal that is handled by the system using IRQ 1.

Option E) None of the above - This option is incorrect since the correct answer is option D.

Therefore, the correct answer is option D. IRQ 1 is commonly assigned to the keyboard.

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To answer this question, we need to understand what ESD stands for. ESD stands for Electrostatic Discharge, which is the sudden flow of electricity between two objects with different electrical potentials. ESD can occur when there is a buildup of static electricity on an object and that object comes into contact with another object or surface.

Now let's go through each option to understand which condition most increases the likelihood of ESD:

Option A) hot, dry conditions - In hot, dry conditions, the air tends to have low humidity, which reduces the likelihood of static electricity buildup. Therefore, this condition is less likely to increase the likelihood of ESD.

Option B) cool, damp conditions - In cool, damp conditions, the air tends to have higher humidity, which can help dissipate static electricity and reduce the likelihood of ESD. Therefore, this condition is less likely to increase the likelihood of ESD.

Option C) cool, dry conditions - In cool, dry conditions, the air tends to have low humidity, which can increase the likelihood of static electricity buildup. Therefore, this condition is more likely to increase the likelihood of ESD.

Option D) hot, damp conditions - In hot, damp conditions, the air tends to have high humidity, which can help dissipate static electricity and reduce the likelihood of ESD. Therefore, this condition is less likely to increase the likelihood of ESD.

The correct answer is C) cool, dry conditions. This condition is more likely to increase the likelihood of ESD because low humidity in the air promotes the buildup of static electricity.

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• Wrong explanation