CompTIA CySA+ (CS0-003) v1.0 (CS0-003)

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Total 227 questions

A user downloads software that contains malware onto a computer that eventually infects numerous other systems. Which of the following has the user become?

  • A. Hacktivist
  • B. Advanced persistent threat
  • C. Insider threat
  • D. Script kiddie


Answer : D

An organization has activated the CSIRT. A security analyst believes a single virtual server was compromised and immediately isolated from the network. Which of the following should the CSIRT conduct next?

  • A. Take a snapshot of the compromised server and verify its integrity
  • B. Restore the affected server to remove any malware
  • C. Contact the appropriate government agency to investigate
  • D. Research the malware strain to perform attribution


Answer : A

During an incident, an analyst needs to acquire evidence for later investigation. Which of the following must be collected first in a computer system, related to its volatility level?

  • A. Disk contents
  • B. Backup data
  • C. Temporary files
  • D. Running processes


Answer : D

A security analyst is trying to identify possible network addresses from different source networks belonging to the same company and region. Which of the following shell script functions could help achieve the goal?

  • A. function w() { a=$(ping -c 1 $1 | awk-F ”/” ’END{print $1}’) && echo “$1 | $a” }
  • B. function x() { b=traceroute -m 40 $1 | awk ’END{print $1}’) && echo “$1 | $b” }
  • C. function y() { dig $(dig -x $1 | grep PTR | tail -n 1 | awk -F ”.in-addr” ’{print $1}’).origin.asn.cymru.com TXT +short }
  • D. function z() { c=$(geoiplookup$1) && echo “$1 | $c” }


Answer : C

A security analyst is writing a shell script to identify IP addresses from the same country. Which of the following functions would help the analyst achieve the objective?

  • A. function w() { info=$(ping -c 1 $1 | awk -F “/” ‘END{print $1}’) && echo “$1 | $info” }
  • B. function x() { info=$(geoiplookup $1) && echo “$1 | $info” }
  • C. function y() { info=$(dig -x $1 | grep PTR | tail -n 1 ) && echo “$1 | $info” }
  • D. function z() { info=$(traceroute -m 40 $1 | awk ‘END{print $1}’) && echo “$1 | $info” }


Answer : B

A security analyst obtained the following table of results from a recent vulnerability assessment that was conducted against a single web server in the environment:

Which of the following should be completed first to remediate the findings?

  • A. Ask the web development team to update the page contents
  • B. Add the IP address allow listing for control panel access
  • C. Purchase an appropriate certificate from a trusted root CA
  • D. Perform proper sanitization on all fields


Answer : C

While reviewing web server logs, an analyst notices several entries with the same time stamps, but all contain odd characters in the request line. Which of the following steps should be taken next?

  • A. Shut the network down immediately and call the next person in the chain of command.
  • B. Determine what attack the odd characters are indicative of.
  • C. Utilize the correct attack framework and determine what the incident response will consist of.
  • D. Notify the local law enforcement for incident response.


Answer : B

A security team conducts a lessons-learned meeting after struggling to determine who should conduct the next steps following a security event. Which of the following should the team create to address this issue?

  • A. Service-level agreement
  • B. Change management plan
  • C. Incident response plan
  • D. Memorandum of understanding


Answer : C

A cybersecurity analyst notices unusual network scanning activity coming from a country that the company does not do business with. Which of the following is the best mitigation technique?

  • A. Geoblock the offending source country.
  • B. Block the IP range of the scans at the network firewall.
  • C. Perform a historical trend analysis and look for similar scanning activity.
  • D. Block the specific IP address of the scans at the network firewall.


Answer : B

An analyst has received an IPS event notification from the SIEM stating an IP address, which is known to be malicious, has attempted to exploit a zero-day vulnerability on several web servers. The exploit contained the following snippet:

/wp-json/trx_addons/V2/get/sc_layout?sc=wp_insert_user&role=administrator

Which of the following controls would work best to mitigate the attack represented by this snippet?

  • A. Limit user creation to administrators only.
  • B. Limit layout creation to administrators only.
  • C. Set the directory trx_addons to read only for all users.
  • D. Set the directory V2 to read only for all users.


Answer : A

A penetration tester submitted data to a form in a web application, which enabled the penetration tester to retrieve user credentials. Which of the following should be recommended for remediation of this application vulnerability?

  • A. Implementing multifactor authentication on the server OS
  • B. Hashing user passwords on the web application
  • C. Performing input validation before allowing submission
  • D. Segmenting the network between the users and the web server


Answer : C

A cybersecurity team lead is developing metrics to present in the weekly executive briefs. Executives are interested in knowing how long it takes to stop the spread of malware that enters the network. Which of the following metrics should the team lead include in the briefs?

  • A. Mean time between failures
  • B. Mean time to detect
  • C. Mean time to remediate
  • D. Mean time to contain


Answer : D

An employee accessed a website that caused a device to become infected with invasive malware. The incident response analyst has:

• created the initial evidence log.
• disabled the wireless adapter on the device.
• interviewed the employee, who was unable to identify the website that was accessed.
• reviewed the web proxy traffic logs.

Which of the following should the analyst do to remediate the infected device?

  • A. Update the system firmware and reimage the hardware.
  • B. Install an additional malware scanner that will send email alerts to the analyst.
  • C. Configure the system to use a proxy server for Internet access.
  • D. Delete the user profile and restore data from backup.


Answer : A

A cloud team received an alert that unauthorized resources were being auto-provisioned. After investigating, the team suspects that cryptomining is occurring. Which of the following indicators would most likely lead the team to this conclusion?

  • A. High GPU utilization
  • B. Bandwidth consumption
  • C. Unauthorized changes
  • D. Unusual traffic spikes


Answer : A

A company’s security team is updating a section of the reporting policy that pertains to inappropriate use of resources (e.g., an employee who installs cryptominers on workstations in the office). Besides the security team, which of the following groups should the issue be escalated to first in order to comply with industry best practices?

  • A. Help desk
  • B. Law enforcement
  • C. Legal department
  • D. Board member


Answer : C

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Total 227 questions