- A
255
Why wrong: Security levels range 0-100; 255 is invalid.
- B
0
Why wrong: Level 0 would treat DMZ as outside, causing issues with return traffic.
- C
50
Correct. Level 50 is between 0 and 100, allowing return traffic from DMZ to outside without ACLs.
- D
100
Why wrong: Level 100 would treat DMZ as inside, which may allow too much access.
Question 47 of 988
350-701 Network Security Practice Question
This 350-701 practice question tests your understanding of network 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.
An engineer configures a Cisco ASA in a DMZ architecture. The DMZ hosts web servers that need to be accessible from the internet. Which security level should be assigned to the DMZ interface to ensure proper traffic flow without additional ACLs for return traffic?
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
✓
50
For internet-to-DMZ traffic, the DMZ interface should have a security level higher than outside (0) but lower than inside (100) to allow return traffic from DMZ to outside without explicit ACLs. Level 50 is common.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
255
Why it's wrong here
Security levels range 0-100; 255 is invalid.
- ✗
0
Why it's wrong here
Level 0 would treat DMZ as outside, causing issues with return traffic.
- ✓
50
Why this is correct
Correct. Level 50 is between 0 and 100, allowing return traffic from DMZ to outside without ACLs.
Related concept
Standard ACLs match source addresses.
- ✗
100
Why it's wrong here
Level 100 would treat DMZ as inside, which may allow too much access.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-701 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this 350-701 question test?
Network Security — This question tests Network Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: 50 — For internet-to-DMZ traffic, the DMZ interface should have a security level higher than outside (0) but lower than inside (100) to allow return traffic from DMZ to outside without explicit ACLs. Level 50 is common.
What should I do if I get this 350-701 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-701 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jul 4, 2026
This 350-701 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 350-701 exam.
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