Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A web login form uses unsanitized input in the backend query. When an attacker enters `' OR '1'='1'--` into the username field, the application grants access without a valid password. Which attack pattern is being used?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Cross-site scripting, because the attacker is trying to run code in the browser.
Cross-site scripting targets the browser context, but this example is bypassing server-side authentication logic.
B
Best answer
SQL injection, because the input changes the meaning of the database query.
SQL injection occurs when untrusted input is embedded into a query and alters the intended logic. The crafted string closes the original condition and adds a statement that evaluates as true, which can bypass authentication checks. This is a classic sign that the application is constructing queries unsafely instead of using parameterized statements or properly bound variables.
C
Distractor review
Broken session management, because the user is still logged in after leaving the page.
Session abuse can be dangerous, but the initial problem here is query manipulation before authentication succeeds.
D
Distractor review
Insecure deserialization, because the application accepts user input.
Insecure deserialization involves manipulating serialized objects, not changing the structure of a database query with SQL syntax.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A laptop is suspected of being used in a malware incident. It is still powered on and connected to Wi-Fi. What should the responder do before shutting it down?
Question 2
An employee reports a ransomware note on a file server. The server is still powered on, shares are still being accessed, and management wants service restored as quickly as possible. What should the incident response team do first?
Question 3
An employee reports a ransomware note on a finance laptop. The laptop is still powered on, connected to Wi-Fi, and the user says they were just working in a spreadsheet. Management wants the fastest safe response that also preserves evidence. What should the responder do first?
Question 4
You are handed a company laptop suspected in an insider theft case. Legal says the evidence may be needed in court. Which action best preserves admissibility?
Question 5
A developer wants to reduce the risk of SQL injection in a new customer search form. Which two changes are the best mitigations? Select two.
Question 6
A branch office uses a flat LAN, and a compromise on one user workstation could spread quickly to finance systems. Management wants finance workstations isolated from general users, but finance staff still need access to a central finance application and network printer. What is the best design change?
FAQ
Questions learners often ask
What does this SY0-701 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: SQL injection, because the input changes the meaning of the database query. — The attack pattern is SQL injection. The malicious input changes the backend query logic so the authentication check returns a result the attacker should not have. This is a server-side input validation and query construction failure. Parameterized queries, stored procedures with safe bindings, and strict input handling are the standard defenses against this class of attack. Why others are wrong: Cross-site scripting targets the browser, not a backend login query. Broken session management deals with session tokens after login, which is not the problem here. Insecure deserialization requires serialized object manipulation, not SQL syntax inserted into a form field. The query is being altered directly, so SQL injection is the best fit.
What should I do if I get this SY0-701 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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