FC0-U71 Security Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Using your pet's name

  Why it's wrong here

  Pet names are short, common and frequently drawn from attacker wordlists, making them trivially guessable. It is tempting because such names are memorable, but a strong password must avoid personal or dictionary-derived content; a long random passphrase of unrelated words meets that requirement.

• ✗

  Using the same password for multiple accounts

  Why it's wrong here

  Reusing one password means a single breach exposes every account, so credential-stuffing succeeds everywhere at once. It is tempting because it removes memorisation effort, and it would suit only low-value throwaway accounts where no sensitive data or linked identity exists.

• ✗

  Using a sequence of 8 characters with letters only

  Why it's wrong here

  Eight letters alone yields a tiny search space with no digits or symbols, so brute-force and dictionary attacks crack it quickly. It is tempting because short alphabetic strings are easy to type and recall, and it would suffice only where a system enforces no complexity or length policy.

• ✓

  Using a 14-character phrase with numbers and symbols

  Why this is correct

  A 14-character passphrase with numbers and symbols combines length with character variety, producing high entropy that resists brute-force and dictionary attacks. This satisfies the stem's best-practise requirement, outperforming short complex strings or single words with trivial substitutions.

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