What is the purpose of a memory controller in a mobile device? MCQ with Answer and Explanation

Question
What is the purpose of a memory controller in a mobile device?
A. To control the display
B. To manage the battery
C. To manage the LPDDR memory
D. To handle cellular signals
Answer: Option C
Solution (By JKSSB Mock Tests)
In mobile devices, the memory controller manages the LPDDR (Low-Power DDR) memory, optimizing power consumption and performance.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
Which structural component of flash memory traps electrons to represent binary ones and zeros?
A. Floating Gate Transistor
B. Capacitor bank
C. Magnetic core
D. Mechanical relay
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Correct Answer: Option A

Explanation:
Flash memory uses floating gate transistors to trap electrical charges (electrons). The presence or absence of charge alters voltage thresholds, representing 0 or 1.
This question belongs to: Computer Memory and Storage Devices
Question #2
What is the typical storage capacity of a Blu-ray disc in GB?
A. 4.7 GB
B. 25 GB (single layer)
C. 700 MB
D. 128 GB
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Correct Answer: Option B

Explanation:
Single-layer Blu-ray holds 25 GB. Dual-layer 50 GB, triple 100 GB, quad 128 GB. The most common is 25 GB.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of RAM that uses a clock signal to synchronize its operations?
A. SDRAM
B. DRAM
C. FPM DRAM
D. SRAM
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Correct Answer: Option A

Explanation:
SDRAM (Synchronous DRAM) synchronizes with the system clock, allowing it to accept commands on every clock cycle, improving performance over asynchronous DRAM.
This question belongs to: Computer Memory and Storage Devices
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