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: integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.. 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 statement best describes integrity in the CIA triad?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Protecting information from unauthorized modification
Integrity is about protecting data from unauthorized changes and helping ensure that information remains accurate and trustworthy. In plain language, it answers the question of whether the data has been altered improperly. This is different from confidentiality, which is about preventing unauthorized disclosure, and availability, which is about access when needed.
This distinction matters because many security controls target one part of the CIA triad more directly than the others. The correct answer is the one focused on unauthorized modification rather than disclosure or uptime.
Key principle: Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Protecting information from unauthorized modification
Why this is correct
This is correct because integrity focuses on preventing or detecting improper changes.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.
✗
Making information available at all times
Why it's wrong here
This is wrong because that is an availability-oriented idea.
When this WOULD be correct
If the question were to ask about the principles of the CIA triad and specifically focused on the definition of availability, then option B would be correct. For example, a question might state, 'Which statement best describes availability in the CIA triad?'
✗
Preventing unauthorized people from seeing the data
Why it's wrong here
This is wrong because that is confidentiality.
When this WOULD be correct
If the exam question asked for the best description of confidentiality in the CIA triad, then option C would be correct, as it accurately reflects the principle of preventing unauthorized access to sensitive information.
✗
Recording all commands for audit
Why it's wrong here
This is wrong because audit logging is closer to accounting than the core meaning of integrity.
When this WOULD be correct
If the exam question were to ask about measures that enhance accountability and traceability in information systems, then option D would be correct. For example, a question could ask about methods to ensure compliance with regulatory standards that require logging user actions.
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.
✓Protecting information from unauthorized modificationCorrect answer▾
Why this is correct
This is correct because integrity focuses on preventing or detecting improper changes.
✗Making information available at all timesWrong answer — click to see why▾
Why this is wrong here
Option B is incorrect because it defines availability, not integrity. Integrity specifically refers to the protection of information from unauthorized modification, while availability ensures that information is accessible when needed.
★ When this WOULD be the correct answer
If the question were to ask about the principles of the CIA triad and specifically focused on the definition of availability, then option B would be correct. For example, a question might state, 'Which statement best describes availability in the CIA triad?'
Why candidates choose this
Candidates may choose this option because they confuse the concepts of integrity and availability, leading them to associate the need for constant access to information with the broader security principles of the CIA triad.
✗Preventing unauthorized people from seeing the dataWrong answer — click to see why▾
Why this is wrong here
Option C is incorrect because it describes confidentiality, which focuses on preventing unauthorized access to data rather than ensuring the integrity of that data from unauthorized modifications.
★ When this WOULD be the correct answer
If the exam question asked for the best description of confidentiality in the CIA triad, then option C would be correct, as it accurately reflects the principle of preventing unauthorized access to sensitive information.
Why candidates choose this
Candidates may choose this option due to a misunderstanding of the CIA triad components, conflating confidentiality with integrity, especially if they are familiar with the need to protect data from unauthorized access.
✗Recording all commands for auditWrong answer — click to see why▾
Why this is wrong here
Option D is incorrect because recording all commands for audit pertains to accountability and traceability, which aligns more with the concept of non-repudiation rather than integrity. Integrity specifically focuses on ensuring that information remains unaltered and accurate.
★ When this WOULD be the correct answer
If the exam question were to ask about measures that enhance accountability and traceability in information systems, then option D would be correct. For example, a question could ask about methods to ensure compliance with regulatory standards that require logging user actions.
Why candidates choose this
Candidates may find option D tempting because they associate auditing with maintaining data integrity, believing that tracking commands contributes to ensuring that data has not been improperly modified.
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 frequent exam trap is mistaking integrity for confidentiality or availability. Candidates often select options related to preventing unauthorized data access (confidentiality) or ensuring uptime (availability) because these concepts are closely related in security discussions. However, integrity specifically focuses on protecting data from unauthorized modification, not just access or availability. Misreading the question or conflating these concepts can lead to choosing incorrect answers like 'making information available at all times' or 'preventing unauthorized people from seeing the data.' Understanding the distinct role of integrity in the CIA triad is essential to avoid this confusion.
Detailed technical explanation
How to think about this question
Integrity in the CIA triad refers to the assurance that data remains accurate, consistent, and unaltered except by authorized users. It ensures that information is protected from unauthorized modification, whether accidental or malicious, preserving its trustworthiness throughout its lifecycle. In Cisco networking and security contexts, integrity mechanisms help detect and prevent tampering with configuration files, routing information, and transmitted data.
The decision process to verify integrity involves using cryptographic hashes, digital signatures, and checksums to detect unauthorized changes. Cisco devices often implement integrity checks in protocols and security features such as IPsec, SSH, and SNMPv3, which use cryptographic methods to ensure data has not been altered in transit. Integrity differs from confidentiality, which prevents unauthorized data access, and availability, which ensures data and services are accessible when needed.
A common exam trap is confusing integrity with confidentiality or availability. For example, protecting data from unauthorized viewing is confidentiality, not integrity. In practical networking, integrity is critical for routing protocols like OSPF and EIGRP, where unauthorized changes to routing tables can cause network outages or security breaches. Cisco devices use integrity checks to maintain reliable network operations and secure management access.
KKey Concepts to Remember
Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.
Cisco devices use cryptographic hashes and digital signatures to detect unauthorized modifications and maintain data integrity.
Integrity differs from confidentiality, which prevents unauthorized data access, and availability, which ensures data is accessible when needed.
Security protocols like IPsec and SSH implement integrity checks to protect data from tampering during transmission.
Routing protocols such as OSPF and EIGRP rely on integrity mechanisms to prevent unauthorized changes that could disrupt network operations.
Integrity verification involves comparing data hashes or checksums to detect any unauthorized alterations.
Audit logs support integrity by recording changes but primarily serve accounting and accountability functions rather than core integrity enforcement.
Understanding the distinct role of integrity helps avoid confusing it with confidentiality or availability in Cisco security contexts.
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
Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-301 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 200-301 question in full detail.
Review integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle., then practise related 200-301 questions on the same topic to reinforce the concept.
Network Services and Security — This question tests Network Services and Security — Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle..
What is the correct answer to this question?
The correct answer is: Protecting information from unauthorized modification — Integrity is about protecting data from unauthorized changes and helping ensure that information remains accurate and trustworthy. In plain language, it answers the question of whether the data has been altered improperly. This is different from confidentiality, which is about preventing unauthorized disclosure, and availability, which is about access when needed.
This distinction matters because many security controls target one part of the CIA triad more directly than the others. The correct answer is the one focused on unauthorized modification rather than disclosure or uptime.
What should I do if I get this 200-301 question wrong?
Review integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle., then practise related 200-301 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Integrity in the CIA triad ensures data remains accurate and unaltered except by authorized users throughout its lifecycle.
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