Question at position 10 Which command creates a signature file decrypted_test.sig that contains both the file and its embedded signature?gpg --sign decrypted_test.txtgpg --cert decrypted_test.txtgpg --encrypt decrypted_test.txtgpg --verify decrypted_test.txtClear my selection单项选择题
A
gpg --sign decrypted_test.txt
B
gpg --cert decrypted_test.txt
C
gpg --encrypt decrypted_test.txt
D
gpg --verify decrypted_test.txt

Question

Question at position 10 Which command creates a signature file decrypted_test.sig that contains both the file and its embedded signature?gpg --sign decrypted_test.txtgpg --cert decrypted_test.txtgpg --encrypt decrypted_test.txtgpg --verify decrypted_test.txtClear my selection单项选择题

A

gpg --sign decrypted_test.txt

B

gpg --cert decrypted_test.txt

C

gpg --encrypt decrypted_test.txt

D

gpg --verify decrypted_test.txt

BlackTom AI · Accepted Answer

gpg --sign creates a single file that bundles the original data together with an attached OpenPGP signature, so the correct command is gpg --sign decrypted_test.txt.

Relevant knowledge points:
- OpenPGP signatures can be attached (the signed data and signature are in one file) or detached (signature stored separately).
- gpg --sign produces an attached signature: the output file contains both the original content and the signature.
- gpg --detach-sign produces a separate .sig that contains only the signature (detached).
- gpg --clearsign creates an ASCII-armored signed text that is readable and includes the original text plus signature block.
- gpg --encrypt encrypts data for recipients (not creating a signature).
- gpg --verify checks signatures but does not create them.

Step-by-step reasoning:
1. The question asks for the command that “creates a signature file ... that contains both the file and its embedded signature.” That describes an attached signature (signed data and signature in one file).
2. gpg --sign decrypted_test.txt produces an attached signature output (the signed file includes the original content and its signature).
3. Alternatives:
   - gpg --cert decrypted_test.txt: not a standard command for producing signatures; “--cert” is not the correct option to sign files.
   - gpg --encrypt decrypted_test.txt: encrypts the file for recipient(s); output is ciphertext only and does not create a signature embedding the original file.
   - gpg --verify decrypted_test.txt: only verifies an existing signature; it does not create any signature file.

Why the correct answer is correct:
gpg --sign attaches a digital signature to the file content and writes a single signed file that contains both the plaintext and the signature (an attached signature). That exactly matches the requirement “contains both the file and its embedded signature.”

Why the other options are incorrect:
- --cert is not the appropriate gpg signing option.
- --encrypt produces encrypted data, not a signature-containing file.
- --verify only checks signatures; it doesn’t create them.

Conclusion: The correct command is gpg --sign decrypted_test.txt, which matches the provided answer.

Question at position 10 Which command creates a signature file decrypted_test.sig that contains both the file and its embedded signature?gpg --sign decrypted_test.txtgpg --cert decrypted_test.txtgpg --encrypt decrypted_test.txtgpg --verify decrypted_test.txtClear my selection单项选择题

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