Which type of memory is directly accessible by the CPU without going through the bus? MCQ with Answer and Explanation

Question
Which type of memory is directly accessible by the CPU without going through the bus?
A. Hard disk
B. Registers
C. Cache
D. RAM
Answer: Option B
Solution (By JKSSB Mock Tests)
Registers are internal to the CPU and are directly accessible by the CPU's arithmetic/logic unit, providing the fastest possible access.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
What is the primary advantage of using DDR4 over DDR3 RAM?
A. Lower data transfer rates
B. Larger physical size
C. Higher operating voltage
D. Higher data rates and lower power consumption
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Correct Answer: Option D

Explanation:
DDR4 offers higher data rates (up to 3200 MT/s and beyond) and lower operating voltage (1.2V vs 1.5V for DDR3), leading to improved performance and efficiency.
This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a characteristic of non-volatile memory?
A. Faster than volatile memory
B. Loses data when power is off
C. Used as main memory in all computers
D. Retains data without power
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Correct Answer: Option D

Explanation:
Non-volatile memory retains data even when the power is off, unlike volatile memory which loses data.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of memory that is used for storing digital photos in a camera?
A. RAM
B. ROM
C. Hard disk
D. SD card
Discuss
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Correct Answer: Option D

Explanation:
Digital cameras typically use SD cards or other flash memory cards for photo storage.
This question belongs to: Computer Memory and Storage Devices
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