Practice Switching Questions Now
Start a timed practice session focusing on Ethernet Switching & VLANs topics from the CCNA question bank.
Start CCNA Practice Quiz →CCNA Switching Question Bank (21 Questions)
Browse all 21 practice questions covering Ethernet Switching & VLANs for the CCNA certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.
- Question 1Network Access
What happens to frames belonging to the native VLAN on an 802.1Q trunk?
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Start CCNA Quiz - Question 2Network Access
Which command configures a switch port as a trunk?
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Start CCNA Quiz - Question 3Network Access
What is the difference between LACP and PAgP for EtherChannel?
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Start CCNA Quiz - Question 4Network Access
What are the port states in Rapid Spanning Tree Protocol (RSTP)?
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Start CCNA Quiz - Question 5Network Access
An administrator configures a trunk port between two switches. Which protocol is the IEEE standard for VLAN trunking?
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Start CCNA Quiz - Question 6Network Access
What is the default native VLAN on a Cisco switch trunk port?
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Start CCNA Quiz - Question 7Network Access
What is the valid VLAN ID range for extended VLANs on Cisco switches?
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Start CCNA Quiz - Question 8Network Access
What is the default STP bridge priority value on Cisco switches?
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Start CCNA Quiz - Question 9Network Access
What is the purpose of a voice VLAN on a switch port?
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Start CCNA Quiz - Question 10Network Access
What is the difference between 802.1Q and ISL trunk encapsulation?
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Start CCNA Quiz - Question 11Network Access
What are the differences between access, trunk, and routed ports on a Layer 3 switch?
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Start CCNA Quiz - Question 12Network Access
What happens if native VLAN settings mismatch between two trunk ports?
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Start CCNA Quiz - Question 13Security Fundamentals
Which security feature should be enabled on switch access ports to limit the number of MAC addresses allowed and prevent unauthorized device connections?
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Start CCNA Quiz - Question 14Security Fundamentals
Which type of attack involves an attacker sending frames with a spoofed MAC address to overflow a switch's MAC address table, causing the switch to flood all traffic?
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Start CCNA Quiz - Question 15Security Fundamentals
Which attack overwhelms a switch's MAC address table to force it to broadcast all traffic?
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Start CCNA Quiz - Question 16Network Access
Which EtherChannel protocol is an IEEE standard that uses LACPDU messages to negotiate bundled links?
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Start CCNA Quiz - Question 17Network Access
Which command configures a switch interface as an access port assigned to VLAN 20?
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Start CCNA Quiz - Question 18Network Access
Which VTP mode allows a switch to create, modify, and delete VLANs and propagate changes?
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Start CCNA Quiz - Question 19Network Access
In the Rapid Spanning Tree Protocol (RSTP, 802.1w), which port role replaces the blocking state from classic STP?
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Start CCNA Quiz - Question 20Network Access
An engineer needs to allow only VLANs 10, 20, and 30 on a trunk link. Which command accomplishes this?
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Start CCNA Quiz - Question 21Network Access
In RSTP (802.1w), which port role replaces the non-designated port role from classic STP?
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Key Switching Concepts for CCNA
CCNA Switching Exam Tips
Ethernet Switching & VLANs questions in CCNA are typically scenario-based. Focus on network fundamentals, IP connectivity, security basics, and automation concepts. Priority concepts: switch, vlan, trunk, 802.1q, stp, rstp.
What CCNA Expects
- Anchor your answer in choose the configuration that correctly applies to the described network topology and requirements.
- Switching scenarios for CCNA are frequently mapped to Domain 1 (20%), Domain 2 (20%), so read the objective carefully before picking controls or architecture.
- Expect multi-topic scenarios where Switching 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 Switching Concepts
- Know the core Switching building blocks cold: switch, vlan, trunk, 802.1q.
- Review the edge-case features and limits for stp, rstp; these details are commonly used to differentiate answer choices.
- Practice service-integration reasoning: how Switching pairs with Network Fundamentals, Inter-VLAN Routing, STP in real deployment patterns.
- For CCNA, explain why the chosen Switching 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 Network Fundamentals often include distractors that look correct for Switching 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 Switching implementation paths and justify which one best fits the scenario?
- Can you map the chosen answer back to Network Fundamentals (20%) outcomes for CCNA?
- Can you explain security and access boundaries for Switching without relying on default-open assumptions?
- Can you describe how Switching integrates with Network Fundamentals and Inter-VLAN Routing during failure, scaling, and monitoring events?