Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A SaaS portal issues signed JWTs in a browser cookie. The help desk confirms a user logged out at 09:10, but SIEM logs show the same token was accepted from a different IP at 09:12 and continued working until the token expired. The application does not keep a server-side revocation list. What weakness is most likely being abused?
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
SQL injection, because the attacker must be manipulating backend database logic to reuse the token.
SQL injection targets database queries. Reusing a valid token after logout is a session-handling problem, not evidence of SQL query manipulation.
B
Best answer
Session hijacking or session abuse, because the attacker can replay a valid token after logout without revocation.
This is session hijacking or session abuse because the attacker is using a valid session token outside the original user context. JWTs are often stateless, so if the application does not track revocation, logout may not immediately invalidate a copied token. The cross-IP reuse after logout strongly suggests the token was stolen or replayed and remained acceptable until its normal expiration.
C
Distractor review
Insecure deserialization, because the token is being decoded and reconstructed on the server.
Insecure deserialization involves unsafe object reconstruction from attacker-controlled data. A replayed JWT does not by itself indicate object deserialization abuse.
D
Distractor review
Cross-site request forgery, because the request is coming from a different IP address.
CSRF abuses a victim's browser to send unwanted requests with ambient authority. The scenario instead shows direct token replay from another source after logout, which is a session theft or abuse problem.
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.
Related practice questions
Related SY0-701 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Security+ social engineering questions
Practise SY0-701 questions linked to Security+ social engineering questions.
Security+ cryptography practice questions
Practise SY0-701 questions linked to Security+ cryptography.
Security+ IAM questions
Practise SY0-701 questions linked to Security+ IAM questions.
Security+ risk management questions
Practise SY0-701 questions linked to Security+ risk management questions.
Security+ incident response questions
Practise SY0-701 questions linked to Security+ incident response questions.
Security+ malware questions
Practise SY0-701 questions linked to Security+ malware questions.
Security+ vulnerability management questions
Practise SY0-701 questions linked to Security+ vulnerability management questions.
Security+ security operations questions
Practise SY0-701 questions linked to Security+ security operations questions.
Security+ zero trust questions
Practise SY0-701 questions linked to Security+ zero trust questions.
Security+ authentication factors questions
Practise SY0-701 questions linked to Security+ authentication factors questions.
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: Session hijacking or session abuse, because the attacker can replay a valid token after logout without revocation. — Session hijacking or session abuse is the best answer. The key issue is that a copied JWT remained valid after logout and was accepted from another IP because the application did not revoke it server-side. That means possession of the token was enough to impersonate the user until expiration. In a stateless-token design, compensating controls like revocation lists, shorter lifetimes, and token binding become important. Why others are wrong: SQL injection would show database manipulation symptoms, not token replay across logins. Insecure deserialization requires unsafe object reconstruction and typically produces different exploitation clues. CSRF uses the victim's authenticated browser to send unauthorized requests; it does not explain a stolen token being reused from a different network location after logout.
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.
Discussion
Loading comments…
Sign in to join the discussion.