- A
Confidentiality: Ensures data is accessible only to authorized parties
This option correctly pairs each security concept with its purpose. Confidentiality, Integrity, and Availability form the CIA triad, while Authentication, Authorization, and Accounting form AAA. These are foundational security principles in Cisco networks.
- B
Integrity: Guarantees data has not been altered by unauthorized entities
This option incorrectly swaps the purposes of Confidentiality, Integrity, and Availability, and misassigns the AAA components. For example, Confidentiality is about privacy, not integrity.
- C
Availability: Ensures systems and data are accessible when needed
This option misassigns all three CIA triad purposes and incorrectly maps AAA components. For instance, Availability is about uptime, not data alteration.
- D
Authentication: Verifies the identity of a user or system
This option correctly identifies Authentication, Authorization, and Accounting, but incorrectly swaps the purposes of Confidentiality, Integrity, and Availability. For example, Confidentiality is about privacy, not integrity.
Quick Answer
The correct pairing is Availability with “Ensures systems and data are accessible when needed,” because the CIA triad defines three distinct security goals: Confidentiality protects data from unauthorized access, Integrity ensures data is not tampered with, and Availability guarantees that authorized users can reach systems and data on demand. Authentication and Authorization, meanwhile, are separate AAA framework components—Authentication verifies identity, while Authorization determines what an authenticated user is allowed to do. On the CCNA 200-301 v2 exam, this concept often appears in a matching question where you must pair each term with its definition; a common trap is confusing Authorization with Authentication or misplacing Integrity as “accessibility.” To remember the CIA triad, think of a locked filing cabinet: Confidentiality is the lock, Integrity is the unaltered documents inside, and Availability is having the key when you need it. For AAA, remember “Who are you? (Authentication), What can you do? (Authorization), and What did you do? (Accounting).”
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: authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.. 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 purpose.
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
Confidentiality: Ensures data is accessible only to authorized parties
These pairings correctly define core security concepts (CIA triad plus authentication and authorization).
Key principle: Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Confidentiality: Ensures data is accessible only to authorized parties
Why this is correct
This option correctly pairs each security concept with its purpose. Confidentiality, Integrity, and Availability form the CIA triad, while Authentication, Authorization, and Accounting form AAA. These are foundational security principles in Cisco networks.
Related concept
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
- ✓
Integrity: Guarantees data has not been altered by unauthorized entities
Why this is correct
This option incorrectly swaps the purposes of Confidentiality, Integrity, and Availability, and misassigns the AAA components. For example, Confidentiality is about privacy, not integrity.
Related concept
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
- ✓
Availability: Ensures systems and data are accessible when needed
Why this is correct
This option misassigns all three CIA triad purposes and incorrectly maps AAA components. For instance, Availability is about uptime, not data alteration.
Related concept
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
- ✓
Authentication: Verifies the identity of a user or system
Why this is correct
This option correctly identifies Authentication, Authorization, and Accounting, but incorrectly swaps the purposes of Confidentiality, Integrity, and Availability. For example, Confidentiality is about privacy, not integrity.
Related concept
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Be careful not to confuse the terms within the CIA triad or between CIA and AAA. Remember: Confidentiality = privacy, Integrity = no unauthorized changes, Availability = uptime/access. AAA: Authentication = who you are, Authorization = what you can do, Accounting = what you did.
Detailed technical explanation
How to think about this question
Authentication is the process that verifies the identity of a user or device before granting access to network resources. In Cisco networking, protocols like RADIUS and TACACS+ are commonly used to authenticate users connecting to devices or services. Authentication ensures that only legitimate users can initiate sessions, forming the first line of defense in network security. Without authentication, unauthorized users could gain access, compromising network integrity. Authorization follows authentication and determines what an authenticated user is permitted to do on the network. After identity verification, the system checks the user's permissions and access rights, enforcing policies such as which commands can be executed or which resources can be accessed. Cisco devices use authorization to enforce role-based access control, ensuring users operate within their allowed scope, which is critical for maintaining secure and manageable networks. Accounting records and logs user activities after authentication and authorization. It tracks what actions users perform, such as commands issued or resources accessed, providing an audit trail for security monitoring and troubleshooting. Confidentiality, distinct from these three, focuses on protecting data from unauthorized disclosure through encryption and secure protocols. Understanding these separate but complementary concepts helps network professionals design robust security policies and correctly interpret CCNA exam questions.
KKey Concepts to Remember
- Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
- Authorization determines the specific permissions and access rights an authenticated user has on the network, enforcing role-based access control.
- Accounting logs and records user activities after access is granted, providing an audit trail for security monitoring and compliance.
- Confidentiality protects data from unauthorized disclosure by using encryption and secure communication protocols within Cisco networks.
- Cisco security protocols like RADIUS and TACACS+ separate authentication, authorization, and accounting functions for granular access control.
- Authentication occurs before authorization and accounting in the access control process, reflecting the logical sequence of security checks.
- Confidentiality is independent of user identity verification and access permissions, focusing instead on safeguarding the data itself.
- Mixing authentication, authorization, accounting, and confidentiality concepts can lead to flawed security design and incorrect CCNA exam answers.
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
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
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 authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices., then practise related 200-301 questions on the same topic to reinforce the concept.
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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 — Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices..
What is the correct answer to this question?
The correct answer is: Confidentiality: Ensures data is accessible only to authorized parties — These pairings correctly define core security concepts (CIA triad plus authentication and authorization).
What should I do if I get this 200-301 question wrong?
Review authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices., then practise related 200-301 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Authentication verifies the identity of users or devices before granting network access, ensuring only legitimate entities connect to Cisco devices.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 200-301
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Match each security concept to its most accurate role.
medium- ✓ A.Confidentiality ensures that data is accessible only to authorized users, typically through encryption.
- B.Integrity ensures that data is accurate and unaltered, typically through hashing or checksums.
- C.Availability ensures that systems and data are accessible when needed, typically through redundancy and backups.
- D.Authentication verifies the identity of a user or device, typically through passwords or certificates.
Why A: Confidentiality, integrity, and availability are the CIA triad. Authentication verifies identity, authorization grants permissions, and accounting logs actions.
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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