Encrypting with GnuPG symmetric encryption | LinuC Level 1 102 Exam original practice question

1.10.3Basic

Encrypt secret information with GnuPG using symmetric encryption while keeping the input file and creating ciphertext.

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

gpg --symmetric secret.txt: Correct. --symmetric encrypts the file with a passphrase.
gpg --decrypt secret.txt: Incorrect. --decrypt performs decryption.
gpg --export secret.txt: Incorrect. --export writes keys such as public keys; it does not encrypt a file.
gpg --verify secret.txt: Incorrect. --verify checks a signature rather than encrypting data.

Detailed explanation

Correctgpg --symmetric secret.txt

Correct. --symmetric encrypts the file with a passphrase.

Incorrectgpg --decrypt secret.txt

Incorrect. --decrypt performs decryption.

Incorrectgpg --export secret.txt

Incorrect. --export writes keys such as public keys; it does not encrypt a file.

Incorrectgpg --verify secret.txt

Incorrect. --verify checks a signature rather than encrypting data.

An example you can run in a temporary verification environment.

printf '%s\n' 'gpg --symmetric secret.txt'

gpg --symmetric secret.txt

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKL-102-1160

EnvironmentGnuPGのコマンド役割確認

Last technical review2026-08-20