SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
This SY0-701 practice question tests your understanding of threats, vulnerabilities, and mitigations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 support portal searches customers by last name using a parameter called q. After one user enters a single quote, the app returns a SQL syntax error. A tester then submits `test' OR '1'='1` and sees every customer record. Which control most directly prevents this issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Parameterize the database queries with prepared statements
The vulnerability is SQL injection, which occurs when user input is directly concatenated into a SQL query. Parameterized queries (prepared statements) separate SQL logic from data by using placeholders, ensuring user input is treated as data only and never executed as code. This directly prevents the attacker from injecting malicious SQL fragments like `' OR '1'='1`.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Parameterize the database queries with prepared statements
Why this is correct
Prepared statements separate code from data, so attacker-controlled input cannot change the intended SQL query structure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Encode all output returned to the browser
Why it's wrong here
Output encoding helps prevent browser-side issues like XSS, but it does not stop malicious SQL input from reaching the database.
✗
Add CSRF tokens to the login form
Why it's wrong here
CSRF tokens protect against unwanted cross-site requests, but they do not address SQL injection in server-side query logic.
✗
Move the application to a separate VLAN
Why it's wrong here
Network segmentation may limit exposure, but it does not fix the vulnerable query construction that allows injection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse output encoding (XSS prevention) with input handling (SQL injection prevention), or they think network controls like VLANs can fix application-layer code flaws.
Trap categories for this question
Command / output trap
Output encoding helps prevent browser-side issues like XSS, but it does not stop malicious SQL input from reaching the database.
Detailed technical explanation
How to think about this question
Under the hood, a prepared statement sends the query template to the database server first (e.g., `SELECT * FROM customers WHERE last_name = ?`), then sends the parameter values separately. The database engine compiles the query structure before seeing the data, so even if the input contains `' OR '1'='1`, it is treated as a literal string, not executable SQL. A real-world scenario: a login form using string concatenation (`"SELECT * FROM users WHERE username = '" + user + "'"`) can be bypassed with `admin' --`, but a prepared statement with `WHERE username = ?` would safely bind the entire input as a single value.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SY0-701 question in full detail.
Threats, Vulnerabilities, and Mitigations — This question tests Threats, Vulnerabilities, and Mitigations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Parameterize the database queries with prepared statements — The vulnerability is SQL injection, which occurs when user input is directly concatenated into a SQL query. Parameterized queries (prepared statements) separate SQL logic from data by using placeholders, ensuring user input is treated as data only and never executed as code. This directly prevents the attacker from injecting malicious SQL fragments like `' OR '1'='1`.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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