問61
頻出度★★☆
PC の画面表示に必要なデータを保持するのに使われる, 画面表示専用メモリはどれか。
令和8年度 ITパスポート試験 問61
テクノロジ系コンピュータ構成要素 › メモリ
This question's explanation and your answers so far.
解説
問 61
Incorrectア
EEPROM is electrically rewritable non-volatile memory (a kind of ROM), used to store data that should be retained even when the power is off, such as setting values and firmware. It is not used to temporarily hold data for screen display, so it is incorrect.
- イ
正解 The correct answer is “イ” VRAM (Video RAM, video memory). VRAM is the memory dedicated to screen display, used to hold the image data shown on the display (the color information of each pixel, i.e., the frame buffer). It temporarily stores the display content drawn by the GPU (graphics processing) and is responsible for sending it out to the display. The higher the resolution and number of colors, the more VRAM capacity is needed, so it exactly matches the question's definition of a dedicated memory that holds the data needed for screen display.
Incorrectウ
Cache memory is a relay memory that bridges the speed gap between the CPU and main memory, supplying frequently used data at high speed. Its purpose is to speed up processing, not a memory dedicated to screen display, so it is incorrect.
Incorrectエ
Flash memory is non-volatile memory whose data is not lost even when the power is off, used in auxiliary storage such as SSDs, USB drives, and SD cards. It is not a dedicated memory for holding screen display data, so it is incorrect.
ここがポイント
- VRAM (Video RAM) is the memory dedicated to screen display that holds the image data (frame buffer) shown on the screen; the higher the resolution and number of colors, the more capacity is needed.
- Memory is distinguished by purpose: EEPROM and flash memory for non-volatile storage, cache memory as a relay for speeding up the CPU, and VRAM for screen display.
用語