XK0-005 Domain 2: Security

Which SSH key type is modern default?

Multiple choice — select one answer

Answer choices

  1. a. RPM/DEB repository signing
  2. b. ed25519
  3. c. ls -Z
  4. d. vendor scanner / trivy on packages

Architectural breakdown & explanation

Ed25519 offers strong security and performance.

Correct answer(s): b. ed25519

Exam domain: Domain 2: Security (21% weight on the official guide).

Official documentation & study links

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