- A
Phishing: A social engineering attack that tricks users into revealing sensitive information such as usernames and passwords.
Phishing is a social engineering technique where attackers impersonate legitimate entities to deceive users into providing credentials or other sensitive data. This matches the description of targeting credentials.
- B
Phishing: A type of malware that encrypts files and demands payment for decryption.
Why wrong: This is incorrect because the description refers to ransomware, not phishing. Ransomware encrypts data and demands a ransom, while phishing is a social engineering attack.
- C
Phishing: An attack that overwhelms a network with traffic to disrupt services.
Why wrong: This is incorrect because the description defines a DDoS (Distributed Denial of Service) attack, not phishing. Phishing does not involve overwhelming traffic.
- D
Phishing: An attack that intercepts communications between two parties to steal data.
Why wrong: This is incorrect because the description defines a Man-in-the-Middle (MitM) attack, not phishing. MitM involves eavesdropping or altering communications.
CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.. 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.
Match each security concept to its most accurate meaning.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Phishing: A social engineering attack that tricks users into revealing sensitive information such as usernames and passwords.
Confidentiality ensures data is not disclosed to unauthorized parties; integrity prevents unauthorized modification of data; availability guarantees systems and data are accessible when needed; least privilege limits access rights to the minimum necessary. The correct matches reflect these core security principles.
Key principle: Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Phishing: A social engineering attack that tricks users into revealing sensitive information such as usernames and passwords.
Why this is correct
Phishing is a social engineering technique where attackers impersonate legitimate entities to deceive users into providing credentials or other sensitive data. This matches the description of targeting credentials.
Related concept
Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.
- ✗
Phishing: A type of malware that encrypts files and demands payment for decryption.
Why it's wrong here
This is incorrect because the description refers to ransomware, not phishing. Ransomware encrypts data and demands a ransom, while phishing is a social engineering attack.
- ✗
Phishing: An attack that overwhelms a network with traffic to disrupt services.
Why it's wrong here
This is incorrect because the description defines a DDoS (Distributed Denial of Service) attack, not phishing. Phishing does not involve overwhelming traffic.
- ✗
Phishing: An attack that intercepts communications between two parties to steal data.
Why it's wrong here
This is incorrect because the description defines a Man-in-the-Middle (MitM) attack, not phishing. MitM involves eavesdropping or altering communications.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Phishing: A social engineering attack that tricks users into revealing sensitive information such as usernames and passwords.Correct answer▾
Why this is correct
Phishing is a social engineering technique where attackers impersonate legitimate entities to deceive users into providing credentials or other sensitive data. This matches the description of targeting credentials.
✗Phishing: A type of malware that encrypts files and demands payment for decryption.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is confusing phishing with ransomware, which is a different type of threat involving file encryption.
Why candidates choose this
Candidates may pick this because both are common security threats and the term 'phishing' is sometimes loosely associated with malicious software.
✗Phishing: An attack that overwhelms a network with traffic to disrupt services.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is attributing a network-level volumetric attack to phishing, which is a social engineering attack.
Why candidates choose this
Candidates may pick this because both are common attack types and the term 'attack' is broad, leading to confusion between different categories.
✗Phishing: An attack that intercepts communications between two parties to steal data.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is confusing phishing with MitM, which is a different attack vector focusing on intercepting communications.
Why candidates choose this
Candidates may pick this because both involve stealing information, but phishing relies on deception while MitM relies on interception.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common mistake is confusing confidentiality with integrity or assuming availability means data is always accessible without considering authorized access.
Detailed technical explanation
How to think about this question
Confidentiality, integrity, availability, and least privilege are core pillars of information security, often abbreviated as the CIA triad plus least privilege. Confidentiality ensures that sensitive information is only accessible to authorized users, preventing unauthorized disclosure. Integrity guarantees that data remains accurate and unaltered except by authorized actions, protecting against tampering or corruption. Availability ensures that systems and data are accessible and operational when needed, preventing downtime or denial of service. Least privilege restricts user or process access rights to the minimum necessary to perform their tasks, reducing the attack surface and limiting potential damage from compromised accounts. In Cisco networking and security contexts, these principles guide the design and implementation of security controls. For example, confidentiality is enforced by encryption protocols like IPsec or SSL, integrity is maintained through hashing and digital signatures, availability is supported by redundancy and failover mechanisms, and least privilege is implemented through role-based access control (RBAC) and carefully crafted access control lists (ACLs). Understanding these concepts helps network engineers configure secure environments and troubleshoot security issues effectively. A frequent exam trap is misapplying these concepts to Cisco technologies. For instance, confusing availability with least privilege might lead to incorrect assumptions about access control configurations. Practically, network devices enforce least privilege by limiting administrative rights and user permissions, while availability is ensured by network design choices like redundant links and power supplies. Recognizing these distinctions is critical for correctly answering CCNA questions and for real-world network security management.
KKey Concepts to Remember
- Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.
- Integrity protects data from unauthorized modification, ensuring that information remains accurate and trustworthy during transmission and storage.
- Availability ensures that network systems and data are accessible and operational when needed, preventing downtime and service interruptions.
- Least privilege restricts user and process access rights to only what is necessary, minimizing security risks from excessive permissions.
- Cisco access control lists (ACLs) implement least privilege by permitting only authorized traffic and blocking unauthorized access.
- Encryption protocols in Cisco devices enforce confidentiality by encoding data to prevent unauthorized disclosure.
- Network redundancy and failover mechanisms in Cisco designs support availability by maintaining continuous service during failures.
- Role-based access control (RBAC) in Cisco IOS limits administrative privileges, enforcing least privilege principles effectively.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Review confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations., then practise related 200-301 questions on the same topic to reinforce the concept.
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Network Services and Security — study guide chapter
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FAQ
Questions learners often ask
What does this 200-301 question test?
Network Services and Security — This question tests Network Services and Security — Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations..
What is the correct answer to this question?
The correct answer is: Phishing: A social engineering attack that tricks users into revealing sensitive information such as usernames and passwords. — Confidentiality ensures data is not disclosed to unauthorized parties; integrity prevents unauthorized modification of data; availability guarantees systems and data are accessible when needed; least privilege limits access rights to the minimum necessary. The correct matches reflect these core security principles.
What should I do if I get this 200-301 question wrong?
Review confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations., then practise related 200-301 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Confidentiality prevents unauthorized users from viewing sensitive data, ensuring privacy in Cisco network communications and configurations.
About these practice questions
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Last reviewed: Apr 12, 2026
This 200-301 practice question is part of Courseiva's free Cisco 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 200-301 exam.
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