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DSE 資訊及通訊科技：數據表示

Data Representation

12 題 MCQ（基礎 0 · 中等 12 · 高階 0），撳入去睇完整解說同上一題／下一題。未學過呢個課題？先睇 ICT 自學路徑單元 2。

  1. 中等ICT-DATA-001

    1. The binary number 1101 is equal to which denary number?

  2. 中等ICT-DATA-002

    2. In hexadecimal, the digit F has the denary value:

  3. 中等ICT-DATA-003

    3. Two hexadecimal digits represent:

  4. 中等ICT-DATA-004

    4. Why is Unicode used instead of ASCII when a document contains Chinese characters?

  5. 中等ICT-DATA-005

    5. An image uses a colour depth of 8 bits per pixel. How many different colours can each pixel represent?

  6. 中等ICT-DATA-006

    6. An uncompressed bitmap is 100 pixels by 80 pixels with a colour depth of 4 bits. Its size is:

  7. 中等ICT-DATA-007

    7. A school logo must be enlarged on a banner without looking blocky. Which statement is correct?

  8. 中等ICT-DATA-008

    8. A sound clip is recorded again at a higher sampling rate, with the same sample size, channels and duration, and it is not compressed. The uncompressed file:

  9. 中等ICT-DATA-009

    9. An uncompressed mono clip lasts 5 seconds, sampled at 8000 Hz with an 8-bit sample size. The file size is:

  10. 中等ICT-DATA-010

    10. The same uncompressed recording is stored once in mono and once in stereo, with every other setting unchanged. The stereo file is:

  11. 中等ICT-DATA-011

    11. In the calculations in this course, 1 KB is taken as:

  12. 中等ICT-DATA-012

    12. The hexadecimal value 2F is equal to which denary number?