🛡️ Access Control Lists - CCNA Practice Questions

Master standard and extended ACLs, numbered and named ACLs, wildcard masks, implicit deny, and ACL placement best practices for filtering network traffic.

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CCNA ACLs Question Bank (3 Questions)

Browse all 3 practice questions covering Access Control Lists for the CCNA certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Security Fundamentals

    Where should an extended ACL be placed for optimal efficiency?

    AAs close to the destination as possible
    BAs close to the source as possible
    COn the core router only
    DOn every router in the path

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  2. Question 2Security Fundamentals

    What is the difference between a standard and extended ACL on Cisco IOS?

    AStandard ACLs are more detailed
    BStandard ACLs filter by source IP only (1-99, 1300-1999); extended ACLs filter by source/dest IP, protocol, and port (100-199, 2000-2699)
    CExtended ACLs can only be applied outbound
    DStandard ACLs support IPv6

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  3. Question 3Security Fundamentals

    An administrator configures a standard ACL. Which criteria can a standard ACL match on?

    ASource IP address only
    BSource and destination IP addresses
    CSource IP, destination IP, and port numbers
    DMAC addresses only

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Key ACLs Concepts for CCNA

aclaccess listwildcard maskpermitdenystandard aclextended aclimplicit deny

CCNA ACLs Exam Tips

Access Control Lists questions in CCNA are typically scenario-based. Focus on network fundamentals, IP connectivity, security basics, and automation concepts. Priority concepts: acl, access list, wildcard mask, permit, deny, standard acl.

What CCNA Expects

  • Anchor your answer in choose the configuration that correctly applies to the described network topology and requirements.
  • ACLs scenarios for CCNA are frequently mapped to Domain 5 (15%), so read the objective carefully before picking controls or architecture.
  • Expect multi-topic scenarios where ACLs interacts with routing, switching, security, or automation patterns rather than appearing as an isolated question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Associate) and vendor best practices.

High-Value ACLs Concepts

  • Know the core ACLs building blocks cold: acl, access list, wildcard mask, permit.
  • Review the edge-case features and limits for deny, standard acl; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how ACLs pairs with Security Fundamentals, NAT, Routing in real deployment patterns.
  • For CCNA, explain why the chosen ACLs design meets reliability, security, and cost expectations better than the alternatives.

Common CCNA Traps

  • Watch for confusing similar protocols or mixing Layer 2 and Layer 3 behavior.
  • Questions in Security Fundamentals often include distractors that look correct for ACLs but violate security policy, convergence, or redundancy requirements.
  • Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
  • If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

  • Can you compare at least two ACLs implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Security Fundamentals (15%) outcomes for CCNA?
  • Can you explain security and access boundaries for ACLs without relying on default-open assumptions?
  • Can you describe how ACLs integrates with Security Fundamentals and NAT during failure, scaling, and monitoring events?

Exam Domains Covering ACLs

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