| Exam Code | CAS-004 |
| Exam Name | CompTIA SecurityX Certification Exam |
| Questions | 619 Questions Answers With Explanation |
| Update Date | June 16,2026 |
| Price |
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Law enforcement officials informed an organization that an investigation has begun. Which of thefollowing is the FIRST step the organization should take?
A. Initiate a legal hold.
B. Refer to the retention policy
C. Perform e-discovery.
D. Review the subpoena
A company with multiple locations has taken a cloud-only approach to its infrastructure The companydoes not have standard vendors or systems resulting in a mix of various solutions put in place by eachlocation The Chief Information Security Officer wants to ensure that the internal security team hasvisibility into all platforms Which of the following best meets this objective?
A. Security information and event management
B. Cloud security posture management
C. SNMFV2 monitoring and log aggregation
D. Managed detection and response services from a third party
An loT device implements an encryption module built within its SoC where the asymmetric privatekey has been defined in a write-once read-many portion of the SoC hardware Which of the followingshould the loT manufacture do if the private key is compromised?
A. Use over-the-air updates to replace the private key
B. Manufacture a new loT device with a redesigned SoC
C. Replace the public portion of the loT key on its servers
D. Release a patch for the SoC software
Company A is merging with Company B Company A is a small, local company Company B has a large,global presence The two companies have a lot of duplication in their IT systems processes, andprocedures On the new Chief Information Officer's (ClO's) first day a fire breaks out at Company B'smam data center Which of the following actions should the CIO take first?
A. Determine whether the incident response plan has been tested at both companies, and use it torespond
B. Review the incident response plans, and engage the disaster recovery plan while relying on the ITleaders from both companies.
C. Ensure hot. warm, and mobile disaster recovery sites are available, and give an update to thecompanies' leadership teams
D. Initiate Company A's IT systems processes and procedures, assess the damage, and perform a BIA
A security administrator needs to recommend an encryption protocol after a legacy stream cipherwas deprecated when a security flaw was discovered. The legacy cipher excelled at maintainingstrong cryptographic security and provided great performance for a streaming video service. Whichof the following AES modes should the security administrator recommend given these requirements?
A. CTR
B. ECB
C. OF8
D. GCM
A forensics investigator is analyzing an executable file extracted from storage media that wassubmitted (or evidence The investigator must use a tool that can identify whether the executable hasindicators, which may point to the creator of the file Which of the following should the investigatoruse while preserving evidence integrity?
A. idd
B. bcrypt
C. SHA-3
D. ssdeep
E. dcfldd
A company with only U S -based customers wants to allow developers from another country to workon the company's website However, the company plans to block normal internet traffic from theother country Which of the following strategies should the company use to accomplish thisobjective? (Select two).
A. Block foreign IP addresses from accessing the website
B. Have the developers use the company's VPN
C. Implement a WAP for the website
D. Give the developers access to a jump box on the network
E. Employ a reverse proxy for the developers
F. Use NAT to enable access for the developers
A security engineer is assessing the security controls of loT systems that are no longer supported forupdates and patching. Which of the following is the best mitigation for defending these loT systems?
A. Disable administrator accounts
B. Enable SELinux
C. Enforce network segmentation
D. Assign static IP addresses
in a situation where the cost of anti-malware exceeds the potential loss from a malware threat,which of the following is the most cost-effective risk response?
A. Risk transfer
B. Risk mitigation
C. Risk acceptance
D. Risk avoidance
A forensic investigator started the process of gathering evidence on a laptop in response to anincident The investigator took a snapshof of the hard drive, copied relevant log files and thenperformed a memory dump Which of the following steps in the process should have occurred first?
A. Preserve secure storage
B. Clone the disk.
C. Collect the most volatile data
D. Copy the relevant log files
A security engineer is assessing a legacy server and needs to determine if FTP is running and onwhich port The service cannot be turned off, as it would impact a critical application's ability tofunction. Which of the following commands would provide the information necessary to create afirewall rule to prevent that service from being exploited?
A. service ”status-ali I grep ftpd
B. chkconfig --list
C. neestat -tulpn
D. systeactl list-unit-file ”type service ftpd
E. service ftpd. status
A company is in the process of refreshing its entire infrastructure The company has a business-criticalprocess running on an old 2008 Windows server If this server fails, the company would lose millionsof dollars in revenue. Which of the following actions should the company should take?
A. Accept the risk as the cost of doing business
B. Create an organizational risk register for project prioritization
C. Calculate the ALE and conduct a cost-benefit analysis
D. Purchase insurance to offset the cost if a failure occurred
A systems engineer needs to develop a solution that uses digital certificates to allow authenticationto laptops. Which of the following authenticator types would be most appropriate for the engineerto include in the design?
A. TOTP token
B. Device certificate
C. Smart card
D. Biometric
The general counsel at an organization has received written notice of upcoming litigation. Thegeneral counsel has issued a legal records hold. Which of the following actions should theorganization take to comply with the request?
A. Preserve all communication matching the requested search terms
B. Block communication with the customer while litigation is ongoing
C. Require employees to be trained on legal record holds
D. Request that all users do not delete any files
A security administrator needs to implement a security solution that willLimit the attack surface in case of an incidentImprove access control for external and internal network security.Improve performance with less congestion on network trafficWhich of the following should the security administrator do?
A. Integrate threat intelligence feeds into the FIM
B. Update firewall rules to match new IP addresses in use
C. Configure SIEM dashboards to provide alerts and visualizations
D. Deploy DLP rules based on updated Pll formatting
A security engineer is concerned about the threat of side-channel attacks The company experienceda past attack that degraded parts of a SCADA system, causing a fluctuation to 20,000rpm from itsnormal operating range As a result, the part deteriorated more quickly than the mean time to failureA further investigation revealed the attacker was able to determine the acceptable rpm range, andthe malware would then fluctuate the rpm until the pan failed Which of the following solutionswould be best to prevent a side-channel attack in the future?
A. Installing online hardware sensors
B. Air gapping important ICS and machines
C. Implementing a HIDS
D. Installing a SIEM agent on the endpoint
An employee's device was missing for 96 hours before being reported. The employee called the helpdesk to ask for another device Which of the following phases of the incident response cycle needsimprovement?
A. Containment
B. Preparation
C. Resolution
D. Investigation
When implementing serverless computing an organization must still account for:
A. the underlying computing network infrastructure
B. hardware compatibility
C. the security of its data
D. patching the service
The Chief Executive Officer of an online retailer notices a sudden drop in sales A security analyst atthe retailer detects a redirection of unsecure web traffic to a competitor's site Which of the followingwould best prevent this type of attack?
A. Enabling HSTS
B. Configuring certificate pinning
C. Enforcing DNSSEC
D. Deploying certificate stapling
A company has retained the services of a consultant to perform a security assessment. As part of theassessment the consultant recommends engaging with others in the industry to collaborate inregards to emerging attacks Which of the following would best enable this activity?
A. ISAC
B. OSINT
C. CVSS
D. Threat modeling
An organization has an operational requirement with a specific equipment vendor The organization islocated in the United States, but the vendor is located in another region Which of the following riskswould be most concerning to the organization in the event of equipment failure?
A. Support may not be available during all business hours
B. The organization requires authorized vendor specialists.
C. Each region has different regulatory frameworks to follow
D. Shipping delays could cost the organization money
An multinational organization was hacked, and the incident response team's timely action preventeda major disaster Following the event, the team created an after action report. Which of the followingis the primary goal of an after action review?
A. To gather evidence for subsequent legal action
B. To determine the identity of the attacker
C. To identify ways to improve the response process
D. To create a plan of action and milestones
Which of the following technologies would benefit the most from the use of biometric readersproximity badge entry systems, and the use of hardware security tokens to access variousenvironments and data entry systems?
A. Deep learning
B. Machine learning
C. Nanotechnology
D. Passwordless authentication
E. Biometric impersonation
A security analyst has been tasked with assessing a new API The analyst needs to be able to test for avariety of different inputs, both malicious and benign, in order to close any vulnerabilities Which ofthe following should the analyst use to achieve this goal?
A. Static analysis
B. Input validation
C. Fuzz testing
D. Post-exploitation
A PKI engineer is defining certificate templates for an organization's CA and would like to ensure atleast two of the possible SAN certificate extension fields populate for documentation purposes.Which of the following are explicit options within this extension? (Select two).
A. Type
B. Email
C. OCSP responder
D. Registration authority
E. Common Name
F. DNS name
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