Computer Hardware Quiz 2
| Description: Computer Hardware Quiz 2 | |
| Number of Questions: 13 | |
| Created by: Aliensbrain Bot | |
| Tags: hardware |
Which IRQ does LPT1 commonly use?
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1
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4
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5
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7
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8
To solve this question, the user needs to know about the Interrupt Request (IRQ) system and how it applies to the LPT1 (Line Print Terminal 1) port.
LPT1 is a parallel port commonly used for printers and other similar devices. In terms of IRQ, it typically uses IRQ7.
Now, let's go through each option and explain why it is right or wrong:
A. 1: This option is incorrect. IRQ1 is typically used for the keyboard controller.
B. 4: This option is incorrect. IRQ4 is typically used for the serial port COM1.
C. 5: This option is incorrect. IRQ5 is typically used for the sound card.
D. 7: This option is correct. LPT1 commonly uses IRQ7.
E. 8: This option is incorrect. IRQ8 is typically used for the real-time clock.
Therefore, the answer is: D.
When plugging the P8 and P9 power connectors into the system board, which of the following is true?
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the black wires of both connectors should NOT be next to each other
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P8 and P9 don't plug into the system board
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the black wires of both connectors should be next to each other
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it doesn't matter which way you plug them in, the voltages are the same
What is different between AT and ATX power supplies?
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They are identical except for their shape.
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AT supplies use a single P1 power connector while ATX uses P8 and P9.
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AT power supplies run on 120V AC current while ATX uses 220V AC
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AT supplies use P8 and P9 power connectors while ATX uses a single P1 connector.
Parity is:
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a byte stored in the FAT to indicated remaining slots
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the optimal transmission speed of data over a CAT 5 cable
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a system for balancing the voltage coming out of the power supply
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an extra bit stored with data in RAM that is used to check for errors when the data is read back
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the optimal transmission speed of data over a CAT 5 cable
AI Explanation
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.
IRQ 6 is commonly assigned to:
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sound card
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COM1
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floppy drive controller
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LPT1
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Keyboard
What are the four key functions of a computer system?
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input, processing, output, and storage
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keyboard, display, memory, and disk drive
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word processing, spreadsheets, database, and contact management
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read, write, calculate, and display
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bits, bytes, words, and OSI
hat kind of connectors are used to connect a PC power supply to a hard drive?
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AT
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molex
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mini-molex
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P9
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chamfer
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it's usually open
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system timer
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real time clock
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keyboard
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none of the above
How much data will a high density (HD) floppy disk hold?
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124 KB
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640 KB
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720 KB
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1.44 MB
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2.88MB
To solve this question, the user needs to know the storage capacity of a high-density (HD) floppy disk.
Now, let's go through each option and explain why it is right or wrong:
A. 124 KB: This option is incorrect. It is the storage capacity of a single-sided, double-density (DD) floppy disk, not an HD floppy disk.
B. 640 KB: This option is incorrect. It is the storage capacity of a double-sided, double-density (DD) floppy disk, not an HD floppy disk.
C. 720 KB: This option is incorrect. It is the storage capacity of a double-sided, double-density (DD) floppy disk formatted with 9 sectors per track, not an HD floppy disk.
D. 1.44 MB: This option is correct. It is the storage capacity of a double-sided, high-density (HD) floppy disk, which uses smaller magnetic particles to store more data than a DD floppy disk.
E. 2.88MB: This option is incorrect. This is the storage capacity of an extended density (ED) floppy disk, which is not as widely used as HD floppy disks.
Therefore, the correct answer is:
The Answer is: D. 1.44 MB
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hot, dry conditions
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cool, damp conditions
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cool, dry conditions
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hot, damp conditions
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0
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1
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4
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13
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14
To answer this question, you need to have knowledge about computer hardware and its components, specifically the hard disk controller and IRQ (Interrupt Request) numbers.
IRQ numbers are used by various hardware devices to request attention from the CPU. Each device is assigned a unique IRQ number to ensure proper communication and coordination between the hardware and the CPU.
In the case of the hard disk controller, it commonly uses IRQ 14.
Now let's go through each option and determine if it is the correct answer:
A. 0: This option is incorrect because IRQ 0 is typically used for the system timer.
B. 1: This option is incorrect because IRQ 1 is commonly used for the keyboard controller.
C. 4: This option is incorrect because IRQ 4 is commonly used for the serial port (COM1).
D. 13: This option is incorrect because IRQ 13 is commonly used for the math coprocessor.
E. 14: This option is correct. IRQ 14 is commonly used for the hard disk controller.
Therefore, the correct answer is E.