Question 1mediumdrag order
Open the full VLAN trunking answer →Question 50 of 1,819
Quick Answer
The correct order begins with configuring the DHCP server itself, then setting the IP helper-address on the VLAN 10 interface, enabling DHCP snooping globally, designating the trusted port toward the server, enabling snooping on VLAN 10, and finally verifying a client lease with the snooping binding table. This sequence is essential because the server must be ready to respond before broadcasts can be forwarded to it via the helper-address, and DHCP snooping must be enabled globally before you can mark trusted ports or apply it to a specific VLAN. On the CCNA 200-301 v2 exam, this drag-and-drop task tests your understanding that DHCP snooping is a security feature that builds a binding table only after a successful DHCP transaction, so verification must come last. A common trap is placing the trusted port step after enabling snooping on the VLAN, which would block legitimate server replies. Remember the mnemonic “Server, Helper, Global, Trust, VLAN, Verify” to lock in the correct flow.
CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
Drag and drop the following steps into the correct order to implement DHCP services for clients in VLAN 10 using a centralized DHCP server in VLAN 20 and to protect the network with DHCP snooping.
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
✓
Configure the DHCP server with an IP address pool for the 192.168.10.0/24 subnet and ensure connectivity to VLAN 20.
The correct order requires the DHCP server to be configured first so it can respond to requests. Then the IP helper-address is configured on the default gateway interface for VLAN 10 to forward client broadcasts to the server. Next, DHCP snooping is enabled globally, followed by identifying the trusted port to the server (to allow DHCP replies), and then snooping is enabled on the client VLAN. Finally, a client connection triggers a DHCP transaction that you can verify with the snooping binding table.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
- Access ports place end devices into a single VLAN.
- Trunk ports carry multiple VLANs between switches.
- Allowed VLAN lists decide which VLANs can cross a trunk.
- Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
- Use show vlan brief to verify access VLANs.
- Use show interfaces trunk to verify trunk state and allowed VLANs.
- Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Got this wrong? Here's your next step.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 200-301 questions on switching, trunking, and access-port configuration.
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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 — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Configure the DHCP server with an IP address pool for the 192.168.10.0/24 subnet and ensure connectivity to VLAN 20. — The correct order requires the DHCP server to be configured first so it can respond to requests. Then the IP helper-address is configured on the default gateway interface for VLAN 10 to forward client broadcasts to the server. Next, DHCP snooping is enabled globally, followed by identifying the trusted port to the server (to allow DHCP replies), and then snooping is enabled on the client VLAN. Finally, a client connection triggers a DHCP transaction that you can verify with the snooping binding table.
What should I do if I get this 200-301 question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 200-301 questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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Last reviewed: Jun 14, 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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