Question 969 of 988

Network Security →hardMultiple SelectObjective-mapped

350-701 Network Security Practice Question

This 350-701 practice question tests your understanding of network security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.

An engineer is configuring a Cisco ASA to support a DMZ segment. Which three of the following are best practices for DMZ design? (Choose three.)

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.

A
Place public-facing servers in the DMZ.
DMZ hosts services accessible from outside.
B
Restrict traffic initiated from the DMZ to the inside network.
DMZ should not be allowed to initiate connections to inside.
C
Assign the DMZ interface a security level of 0.
Why wrong: Security level 0 is for outside; DMZ typically 50.
D
Implement strict ACLs between outside and DMZ.
Only necessary traffic should be allowed.
E
Use the same subnet for DMZ and inside networks.
Why wrong: They should be separate subnets for segmentation.

Full breakdown with real-world context →

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

✓

Place public-facing servers in the DMZ.

DMZ should have a different security level (typically between inside and outside). Traffic from DMZ to inside should be restricted. Services in DMZ should be hardened. The DMZ interface should be a separate physical or VLAN interface.

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.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Place public-facing servers in the DMZ.
Why this is correct
DMZ hosts services accessible from outside.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Access ports place end devices into a single VLAN.
✓
Restrict traffic initiated from the DMZ to the inside network.
Why this is correct
DMZ should not be allowed to initiate connections to inside.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Access ports place end devices into a single VLAN.
✗
Assign the DMZ interface a security level of 0.
Why it's wrong here
Security level 0 is for outside; DMZ typically 50.
✓
Implement strict ACLs between outside and DMZ.
Why this is correct
Only necessary traffic should be allowed.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Access ports place end devices into a single VLAN.
✗
Use the same subnet for DMZ and inside networks.
Why it's wrong here
They should be separate subnets for segmentation.

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.

Visual reference

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 350-701 questions on switching, trunking, and access-port configuration.

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FAQ

Questions learners often ask

What does this 350-701 question test?

Network Security — This question tests Network Security — Access ports place end devices into a single VLAN..

What is the correct answer to this question?

The correct answer is: Place public-facing servers in the DMZ. — DMZ should have a different security level (typically between inside and outside). Traffic from DMZ to inside should be restricted. Services in DMZ should be hardened. The DMZ interface should be a separate physical or VLAN interface.

What should I do if I get this 350-701 question wrong?

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?

Access ports place end devices into a single VLAN.

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Last reviewed: Jul 4, 2026

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