Free CFR-310: CyberSec First Responder Exam Questions and Answers
CFR-310 is the retired second revision of CertNexus' CyberSec First Responder exam. The live version is CFR-410, and the numbering tells you so: CertNexus codes are a three-letter domain prefix, then a generation digit, then 10, which is how CFR-210 became CFR-310 and CFR-310 became CFR-410. The ground is largely shared, and CFR is the CertNexus credential approved under DoD Directive 8570/8140 for four Cyber Security Service Provider roles, which is why it turns up in US federal hiring baselines. Check which revision your employer or contract names before you book a seat.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 12, 2026
- Exam code
- CFR-310
- Provider
- CertNexus
- Questions in our bank
- 1000+
- Free to read
- First 10, with answers
- Official page
- Official Exam website
- Our test mode duration & pass mark
- 130 mins · 70%
Recommended: Switch to Test Mode to start a practice test that simulates the real exam experience.
Question #1
A company has detected unusual outbound traffic from a workstations. What should the CyberSec First Responder do first?
Please select an optionIncorrectCorrect answer: B
Isolating the workstation prevents further data leakage and protects the integrity of evidence while responding.
Was this answer correct?Question #2
During an investigation, the responder finds altered configuration files in a router. What is likely occurring?
Please select an optionIncorrectCorrect answer: C
Altered configurations suggest potential insider threats, where an employee manipulates settings for malicious intent.
Was this answer correct?Question #3
A security team receives alerts about a potential data breach and lacks logs. What is the most likely impact?
Please select an optionIncorrectCorrect answer: C
Lack of logs can hinder the investigation and lead to compliance issues, resulting in potential legal consequences.
Was this answer correct?Question #4
Following a ransomware infection, what is a recommended initial action for a CyberSec First Responder?
Please select an optionIncorrectCorrect answer: D
Disconnecting infected systems helps contain the ransomware and prevent further spread to other systems.
Was this answer correct?Question #5
An employee reports strange pop-up ads on their workstation. What should be the responder's first step?
Please select an optionIncorrectCorrect answer: A
A malware scan will help identify potential threats causing the pop-ups, and this step is critical for remediation.
Was this answer correct?Question #6
A phishing email has been reported. What is the immediate action a CyberSec First Responder should take?
Please select an optionIncorrectCorrect answer: D
Reporting the phishing attempt to the IT department helps prevent further attacks and protects the organization.
Was this answer correct?Question #7
During an incident response, forensic evidence is vital. What should a responder ensure when collecting evidence?
Please select an optionIncorrectCorrect answer: D
Maintaining a chain of custody ensures that the evidence remains admissible in legal proceedings and is not tampered with.
Was this answer correct?Question #8
A network administrator discovers a rogue access point. What is the best response?
Please select an optionIncorrectCorrect answer: B
Disabling the rogue access point prevents further unauthorized access to the network, enhancing security.
Was this answer correct?Question #9
A user believes their account has been compromised. What is the first action the responder should take?
Please select an optionIncorrectCorrect answer: A
Advising the user to change their passwords immediately is crucial to prevent further unauthorized access.
Was this answer correct?Question #10
A security audit reveals multiple systems running outdated software. What is a potential consequence?
Please select an optionIncorrectCorrect answer: C
Running outdated software can lead to vulnerabilities being exploited by attackers, increasing risks to the system.
Was this answer correct?
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FAQ
Learn More: https://certnexus.com
- Q1: What is the CFR-310: CyberSec First Responder exam?
- A: CFR-310: CyberSec First Responder is a CertNexus certification exam. Judging by the questions in our bank, it concentrates on cybersec, responder, breach, discovers and ransomware.
- Q2: What topics does the CFR-310: CyberSec First Responder exam cover?
- A: Questions in our CFR-310: CyberSec First Responder bank cluster around cybersec, responder, breach, discovers, ransomware, malware, evidence and compromised. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for CFR-310: CyberSec First Responder?
- A: Work through the CFR-310: CyberSec First Responder practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real CFR-310: CyberSec First Responder exam questions?
- A: They are drawn from officially released past questions and from community members who have sat CFR-310: CyberSec First Responder. Answers are verified and updated weekly.
- Q5: Where do I register for the CFR-310: CyberSec First Responder exam?
- A: Register through CertNexus directly at https://certnexus.com/cybersec-first-responder-cfr/. Exampractice is not affiliated with CertNexus and does not administer the exam.
- Q6: Is there a free CFR-310: CyberSec First Responder sample?
- A: Yes. Every CFR-310: CyberSec First Responder page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
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- A: CertNexus Certification Exams validate your expertise in emerging technologies such as cybersecurity, data science, Internet of Things (IoT), and artificial intelligence (AI). These certifications demonstrate your proficiency in applying these technologies to solve business problems and improve organizational performance.
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- A: CertNexus offers various certification paths, including CyberSec First Responder (CFR), Certified Internet of Things Practitioner (CIoTP), Certified Artificial Intelligence Practitioner (CAIP), and Certified Data Science Practitioner (CDSP), each tailored to different roles and expertise levels in emerging technologies.
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