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Exam 70-480 topic 3 question 29 discussion

Actual exam question from Microsoft's 70-480
Question #: 29
Topic #: 3
[All 70-480 Questions]

You develop a webpage that allows a user to download a JPEG image and convert it to a PNG file.
You need to implement the code to download the contents of the JPEG image with no additional decoding.
Which JavaScript function should you use?

  • A. readAsBinaryString()
  • B. readAsArrayBuffer()
  • C. readAsDataURL()
  • D. readAsText()
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Suggested Answer: B 🗳️
The readAsArrayBuffer method is used to read a File, Blob, MSStream into memory as an ArrayBuffer object.
Reference: FileReader.readAsArrayBuffer
by SxyPenguin at Aug. 28, 2020, 12:44 p.m.

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SxyPenguin
4 years, 9 months ago
The explanation does not make clear why this is the answer
upvoted 1 times
Raly
4 years, 8 months ago
the image is a blob
upvoted 1 times
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