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URL must contain

  • A.Protocol identifier
  • B.The unique registered domain name
  • C.WWW and the unique registered domain name
  • D.WWW

Answer: D

Correct answer: Protocol identifier

Every URL begins with the scheme that says how the resource is to be fetched - http, https, ftp, mailto. That protocol identifier is the one part that is always present; www is merely a common host name and may be absent.

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