- A
Security group allowing only HTTPS
Why wrong: Security groups are stateful firewalls at instance level, not application inspection.
- B
Network ACL with deny rule for port 80
Why wrong: NACLs are stateless and cannot inspect application layer.
- C
Managed rule group for SQL injection
AWS WAF managed rules detect SQL injection in requests.
- D
Custom rule matching on source IP
Why wrong: Source IP-based rules do not detect SQL injection in query strings.
Question 692 of 988
350-701 Cloud Security Practice Question
This 350-701 practice question tests your understanding of cloud security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A security team is implementing AWS WAF to protect a web application. They want to block requests that contain SQL injection patterns in the query string. Which AWS WAF component should be used?
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
✓
Managed rule group for SQL injection
AWS WAF uses managed rule groups (e.g., the SQL injection rule group) to detect common attack patterns. Custom rules can also be written but the easiest is to use the managed rule group. NACLs and security groups operate at network level, not application layer.
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.
- ✗
Security group allowing only HTTPS
Why it's wrong here
Security groups are stateful firewalls at instance level, not application inspection.
- ✗
Network ACL with deny rule for port 80
Why it's wrong here
NACLs are stateless and cannot inspect application layer.
- ✓
Managed rule group for SQL injection
Why this is correct
AWS WAF managed rules detect SQL injection in requests.
Related concept
Standard ACLs match source addresses.
- ✗
Custom rule matching on source IP
Why it's wrong here
Source IP-based rules do not detect SQL injection in query strings.
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.
Quick reference
OSI Model Reference
| Layer | Name | PDU | Key Protocols / Devices |
|---|---|---|---|
| 7 | Application | Data | HTTP, HTTPS, DNS, SMTP, FTP, SSH |
| 6 | Presentation | Data | TLS / SSL, JPEG, ASCII encoding |
| 5 | Session | Data | NetBIOS, RPC, SIP |
| 4 | Transport | Segment / Datagram | TCP, UDP |
| 3 | Network | Packet | IP, ICMP, OSPF — Routers |
| 2 | Data Link | Frame | Ethernet, Wi-Fi, PPP — Switches, Bridges |
| 1 | Physical | Bits | Cables, NICs, Hubs, Repeaters |
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?
Cloud Security — This question tests Cloud Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Managed rule group for SQL injection — AWS WAF uses managed rule groups (e.g., the SQL injection rule group) to detect common attack patterns. Custom rules can also be written but the easiest is to use the managed rule group. NACLs and security groups operate at network level, not application layer.
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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