When sending binary files (like images or executables) over text-only protocols like email (SMTP) or HTML, which encoding scheme is most commonly used?

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A Hexadecimal
B Binary Coded Decimal (BCD)
C Base64
D Unicode

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Answer: C. Base64

Answer: C) Base64
Explanation: Base64 converts raw binary data into a set of 64 safe, printable ASCII characters (A-Z, a-z, 0-9, +, /). This prevents email clients or web legacy servers from misinterpreting raw binary data as control commands, ensuring intact data transmission.

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When sending binary files (like images or executables) over text-only protocols like email (SMTP) or HTML, which encoding scheme is most commonly used?

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