The correct answer is that only HTTP and HTTPS traffic from the source network 10.0.0.0/8 will be permitted. This is because the access control list (ACL) applied to the internal interface explicitly permits TCP traffic on ports 80 and 443, which correspond to HTTP and HTTPS respectively, while implicitly denying all other traffic by default. On the Cisco CyberOps Associate 200-201 exam, this scenario tests your ability to interpret ACL rules and understand that a permit statement for specific ports does not allow any other services, even if they originate from the same source network. A common trap is assuming that because the source network is broad, all traffic from it is allowed, but the ACL’s port-specific conditions override that. Remember the memory tip: “80 and 443, no other ports are worthy”—only web traffic passes through.
200-201 Security Policies and Procedures Practice Question
This 200-201 practice question tests your understanding of security policies and procedures. 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.
Exhibit
Building configuration...
Current configuration : 2345 bytes
!
interface GigabitEthernet0/1
description Internal Network
ip address 192.168.1.1 255.255.255.0
no ip redirects
no ip proxy-arp
ip access-group INBOUND in
!
ip access-list extended INBOUND
permit tcp 10.0.0.0 0.255.255.255 any eq 80
permit tcp 10.0.0.0 0.255.255.255 any eq 443
deny ip any any
Refer to the exhibit. A security analyst reviews the configuration of a router and notices the access list applied to the internal interface. Which traffic from the source network 10.0.0.0/8 will be permitted? (Assume typical web traffic.)
Building configuration...
Current configuration : 2345 bytes
!
interface GigabitEthernet0/1
description Internal Network
ip address 192.168.1.1 255.255.255.0
no ip redirects
no ip proxy-arp
ip access-group INBOUND in
!
ip access-list extended INBOUND
permit tcp 10.0.0.0 0.255.255.255 any eq 80
permit tcp 10.0.0.0 0.255.255.255 any eq 443
deny ip any any
A
HTTP and HTTPS traffic only
The ACL explicitly permits TCP traffic to ports 80 and 443.
B
All TCP traffic
Why wrong: The ACL only permits specific TCP ports, not all TCP.
C
All IP traffic from 10.0.0.0/8
Why wrong: The ACL denies all other IP traffic after the permit statements.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
HTTP and HTTPS traffic only
Option A is correct because the ACL permits TCP traffic from 10.0.0.0/8 to any destination on ports 80 (HTTP) and 443 (HTTPS). Option B is wrong because only these two ports are permitted. Option C is wrong because it permits only HTTP and HTTPS. Option D is wrong because both HTTP and HTTPS are allowed.
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.
✓
HTTP and HTTPS traffic only
Why this is correct
The ACL explicitly permits TCP traffic to ports 80 and 443.
Related concept
Static NAT maps one inside address to one outside address.
✗
All TCP traffic
Why it's wrong here
The ACL only permits specific TCP ports, not all TCP.
✗
All IP traffic from 10.0.0.0/8
Why it's wrong here
The ACL denies all other IP traffic after the permit statements.
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.
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 200-201 NAT questions on configuration and troubleshooting.
Security Policies and Procedures — This question tests Security Policies and Procedures — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: HTTP and HTTPS traffic only — Option A is correct because the ACL permits TCP traffic from 10.0.0.0/8 to any destination on ports 80 (HTTP) and 443 (HTTPS). Option B is wrong because only these two ports are permitted. Option C is wrong because it permits only HTTP and HTTPS. Option D is wrong because both HTTP and HTTPS are allowed.
What should I do if I get this 200-201 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 200-201 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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