Quick Answer
The correct answer is Cr@zy8#s, as it exemplifies a strong password by satisfying all key criteria for complexity and resilience. This password is at least eight characters long, incorporates uppercase and lowercase letters, includes a digit, and uses two special characters—@ and #—which significantly increases its entropy and makes it resistant to both brute-force and dictionary attacks. On the CompTIA ITF+ FC0-U61 exam, this concept tests your understanding of authentication best practices, often appearing in questions that ask you to identify a secure credential among common weak choices like “Password123” or “qwerty.” A common trap is selecting passwords that are long but contain only lowercase letters or common words, so remember that true strength comes from mixing character types unpredictably. A helpful memory tip is “8+ U L D S”—eight characters, uppercase, lowercase, digit, and special—to quickly verify any strong password example you encounter.
This FC0-U61 practice question tests your understanding of security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which of the following is an example of a strong password?
123456
Why wrong: Sequential numbers are easily guessed and widely used.
Cr@zy8#s
This password uses uppercase, lowercase, numbers, and symbols, making it strong.
abc123
Why wrong: Combinations of common words and sequential numbers are weak.
password
Why wrong: Common words like 'password' are easily guessed and weak.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cr@zy8#s
Option B (Cr@zy8#s) is correct because it meets all strong password criteria: it is at least 8 characters long, includes uppercase and lowercase letters, a digit, and special characters (@ and #). This complexity makes it resistant to brute-force attacks and dictionary attacks, as it increases the entropy and does not contain common words or sequential patterns.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
123456
Why it's wrong here
Sequential numbers are easily guessed and widely used.
Cr@zy8#s
Why this is correct
This password uses uppercase, lowercase, numbers, and symbols, making it strong.
Related concept
Read the scenario before looking for a memorised answer.
abc123
Why it's wrong here
Combinations of common words and sequential numbers are weak.
password
Why it's wrong here
Common words like 'password' are easily guessed and weak.
Common exam traps
The trap here is that candidates often choose passwords like 'abc123' or '123456' because they seem easy to remember, but the exam tests the understanding that a strong password must include a mix of character types and avoid common patterns or dictionary words.
Detailed technical explanation
Password strength is measured in bits of entropy, where each additional character type (uppercase, lowercase, digit, special) expands the search space exponentially. For example, an 8-character password using only lowercase letters has 26^8 ≈ 208 billion combinations, while one using all four character sets (95 printable ASCII characters) has 95^8 ≈ 6.6 quadrillion combinations. In real-world scenarios, systems often enforce password policies via regular expressions or entropy checks, and NIST SP 800-63B recommends against composition rules in favor of minimum length and checking against breached password lists.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Security — This question tests Security — Read the scenario before looking for a memorised answer..
The correct answer is: Cr@zy8#s — Option B (Cr@zy8#s) is correct because it meets all strong password criteria: it is at least 8 characters long, includes uppercase and lowercase letters, a digit, and special characters (@ and #). This complexity makes it resistant to brute-force attacks and dictionary attacks, as it increases the entropy and does not contain common words or sequential patterns.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This FC0-U61 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U61 exam.
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