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200-301 · Question #1549

What is the RFC 4627 default encoding for JSON text?

The correct answer is C. UTF-8. RFC 4627, the standard defining JSON, specifies UTF-8 as the required default character encoding for JSON text.

Submitted by asante_acc· Mar 5, 2026Automation and Programmability

Question

What is the RFC 4627 default encoding for JSON text?

Options

  • AUCS-2
  • BGB18030
  • CUTF-8
  • DHex

How the community answered

(32 responses)
  • A
    3% (1)
  • B
    3% (1)
  • C
    88% (28)
  • D
    6% (2)

Why each option

RFC 4627, the standard defining JSON, specifies UTF-8 as the required default character encoding for JSON text.

AUCS-2

UCS-2 is a 16-bit fixed-width Unicode encoding, but it is not the default encoding for JSON as specified in RFC 4627.

BGB18030

GB18030 is a Chinese national standard character encoding and is not the default or specified encoding for JSON in RFC 4627.

CUTF-8Correct

RFC 4627 mandates that JSON text SHALL be encoded in Unicode, with UTF-8 being the preferred and required default encoding for JSON text producers. This ensures broad compatibility and proper handling of various character sets.

DHex

Hexadecimal (Hex) is a numerical base for representing data, not a character encoding scheme itself.

Concept tested: JSON character encoding (RFC 4627)

Source: https://www.rfc-editor.org/rfc/rfc4627

Topics

#JSON encoding#RFC 4627#Character encoding

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