- A
Traffic from inside to outside is denied unless NAT is configured.
Why wrong: Incorrect; NAT is not required for forwarding, only if address translation is needed.
- B
All traffic between inside and outside is denied without an ACL.
Why wrong: Incorrect; higher-to-lower traffic is allowed by default.
- C
Traffic from inside to outside is allowed by default if the connection is statefully inspected.
Correct; higher-to-lower traffic is allowed if stateful inspection permits.
- D
Traffic from outside to inside is allowed by default.
Why wrong: Incorrect; traffic from lower to higher security is blocked by default.
Question 621 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 administrator configures a Cisco ASA with an interface named 'inside' at security level 100 and 'outside' at security level 0. Which statement about traffic flow is true?
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
✓
Traffic from inside to outside is allowed by default if the connection is statefully inspected.
By default, traffic from a higher security level (inside) to a lower security level (outside) is allowed without an ACL if stateful inspection permits.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Traffic from inside to outside is denied unless NAT is configured.
Why it's wrong here
Incorrect; NAT is not required for forwarding, only if address translation is needed.
- ✗
All traffic between inside and outside is denied without an ACL.
Why it's wrong here
Incorrect; higher-to-lower traffic is allowed by default.
- ✓
Traffic from inside to outside is allowed by default if the connection is statefully inspected.
Why this is correct
Correct; higher-to-lower traffic is allowed if stateful inspection permits.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Traffic from outside to inside is allowed by default.
Why it's wrong here
Incorrect; traffic from lower to higher security is blocked by default.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-701 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this 350-701 question test?
Network Security — This question tests Network Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Traffic from inside to outside is allowed by default if the connection is statefully inspected. — By default, traffic from a higher security level (inside) to a lower security level (outside) is allowed without an ACL if stateful inspection permits.
What should I do if I get this 350-701 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-701 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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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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