comptia exam 51-100 Flashcards
Which of the following organizations sets frameworks and controls for optimal security configuration on systems?
A. ISO
B. GDPR
C. PCI DSS
D. NIST
NIST
An organization discovered files with proprietary financial data have been deleted. The files have been recovered from backup, but every time the Chief FinancialOfficer logs in to the file server, the same files are deleted again. No other users are experiencing this issue. Which of the following types of malware is MOST likely causing this behavior?
A. Logic bomb
B. Crypto malware
C. Spyware
D. Remote access Trojan
A. Logic bomb
A security analyst has identified malware spreading through the corporate network and has activated the CSIRT. Which of the following should the analyst do NEXT?
A. Review how the malware was introduced to the network.
B. Attempt to quarantine all infected hosts to limit further spread.
C. Create help desk tickets to get infected systems reimaged.
D. Update all endpoint antivirus solutions with the latest updates.
Reveal Solution
B. Attempt to quarantine all infected hosts to limit further spread.
During an incident response, an analyst applied rules to all inbound traffic on the border firewall and implemented ACLs on each critical server. Following an investigation, the company realizes it is still vulnerable because outbound traffic is not restricted, and the adversary is able to maintain a presence in the network.In which of the following stages of the Cyber Kill Chain is the adversary currently operating?
A. Reconnaissance
B. Command and control
C. Actions on objective
D. Exploitation
C. Actions on objective
A recent security breach exploited software vulnerabilities in the firewall and within the network management solution. Which of the following will MOST likely be used to identify when the breach occurred through each device?
A. SIEM correlation dashboards
B. Firewall syslog event logs
C. Network management solution login audit logs
D. Bandwidth monitors and interface sensors
A. SIEM correlation dashboards
Which of the following is the FIRST environment in which proper, secure coding should be practiced?
A. Stage
B. Development
C. Production
D. Test
A. Stage
A cloud service provider has created an environment where customers can connect existing local networks to the cloud for additional computing resources and block internal HR applications from reaching the cloud. Which of the following cloud models is being used?
A. Public
B. Community
C. Hybrid
D. Private
C. Hybrid
An organization has developed an application that needs a patch to fix a critical vulnerability. In which of the following environments should the patch be deployed LAST?
A. Test
B. Staging
C. Development
D. Production
Reveal Solution
C. Development
An organization is building backup server rooms in geographically diverse locations. The Chief Information Security Officer implemented a requirement on the project that states the new hardware cannot be susceptible to the same vulnerabilities in the existing server room.
Which of the following should the systems engineer consider?
A. Purchasing hardware from different vendors
B. Migrating workloads to public cloud infrastructure
C. Implementing a robust patch management solution
D. Designing new detective security controls
B. Migrating workloads to public cloud infrastructure
A security analyst is working on a project to implement a solution that monitors network communications and provides alerts when abnormal behavior is detected. Which of the following is the security analyst MOST likely implementing?
A. Vulnerability scans
B. User behavior analysis
C. Security orchestration, automation, and response
D. Threat hunting
B. User behavior analysis
Data exfiltration analysis indicates that an attacker managed to download system configuration notes from a web server. The web-server logs have been deleted, but analysts have determined that the system configuration notes were stored in the database administrator’s folder on the web server.
Which of the following attacks explains what occurred? (Choose two.)
A. Pass-the-hash
B. Directory traversal
C. SQL injection
D. Privilege escalation
E. Cross-site scripting
F. Request forgery
B. Directory traversal
D. Privilege escalation
A junior security analyst is conducting an analysis after passwords were changed on multiple accounts without users’ interaction. The SIEM have multiple login entries with the following text: suspicious event - user: scheduledtasks successfully authenticate on AD on abnormal time suspicious event - user: scheduledtasks failed to execute c:\weekly_checkups\amazing-3rdparty-domain-assessment.py suspicious event - user: scheduledtasks failed to execute c:\weekly_checkups\secureyourAD-3rdparty-compliance.sh suspicious event - user: scheduledtasks successfully executed c:\weekly_checkups\amazing-3rdparty-domain-assessment.py
Which of the following is the MOST likely attack conducted on the environment?
A. Malicious script
B. Privilege escalation
C. Domain hijacking
D. DNS poisoning
A. Malicious script
A customer service representative reported an unusual text message that was sent to the help desk. The message contained an unrecognized invoice number with a large balance due and a link to click for more details. Which of the following BEST describes this technique?
A. Vishing
B. Whaling
C. Phishing
D. Smishing
D. Smishing
Which of the following actions would be recommended to improve an incident response process?
A. Train the team to identify the difference between events and incidents.
B. Modify access so the IT team has full access to the compromised assets.
C. Contact the authorities if a cybercrime is suspected.
D. Restrict communication surrounding the response to the IT team.
A. Train the team to identify the difference between events and incidents.
A cybersecurity administrator needs to implement a Layer 7 security control on a network and block potential attacks. Which of the following can block an attack at Layer 7? (Choose two.)
A. HIDS
B. NIPS
C. HSM
D. WAF
E. NAC
F. NIDS
B. NIPS
D. WAF
A business operations manager is concerned that a PC that is critical to business operations will have a costly hardware failure soon. The manager is looking for options to continue business operations without incurring large costs.
Which of the following would mitigate the manager’s concerns?.
A. Implement a full system upgrade.
B. Perform a physical-to-virtual migration.
C. Install uninterruptible power supplies.
D. Purchase cybersecurity insurance.
B. Perform a physical-to-virtual migration.
An organization has activated an incident response plan due to a malware outbreak on its network. The organization has brought in a forensics team that has identified an internet-facing Windows server as the likely point of initial compromise. The malware family that was detected is known to be distributed by manually logging on to servers and running the malicious code..
Which of the following actions would be BEST to prevent reinfection from the infection vector?
A. Prevent connections over TFTP from the internal network.
B. Create a firewall rule that blocks a 22 from the internet to the server.
C. Disable file sharing over port 445 to the server.
D. Block port 3389 inbound from untrusted networks.
C. Disable file sharing over port 445 to the server.
Which of the following uses SAML for authentication?
A. TOTP
B. Federation
C. Kerberos
D. HOTP
B. Federation
The SOC for a large MSSP is meeting to discuss the lessons learned from a recent incident that took much too long to resolve. This type of incident has become more common in recent weeks and is consuming large amounts of the analysts’ time due to manual tasks being performed.
Which of the following solutions should the SOC consider to BEST improve its response time?
A. Configure a NIDS appliance using a Switched Port Analyzer.
B. Collect OSINT and catalog the artifacts in a central repository.
C. Implement a SOAR with customizable playbooks.
D. Install a SIEM with community-driven threat intelligence.
C. Implement a SOAR with customizable playbooks.
Business partners are working on a security mechanism to validate transactions securely. The requirement is for one company to be responsible for deploying a trusted solution that will register and issue artifacts used to sign, encrypt, and decrypt transaction files.
Which of the following is the BEST solution to adopt?
A. PKI
B. Blockchain
C. SAML
D. OAuth
A. PKI
A security analyst has been asked by the Chief Information Security Officer to:✑ develop a secure method of providing centralized management of infrastructure✑ reduce the need to constantly replace aging end user machines✑ provide a consistent user desktop experience
Which of the following BEST meets these requirements?
A. BYOD
B. Mobile device management
C. VDI
D. Containerization
C. VDI
Which of the following terms describes a broad range of information that is sensitive to a specific organization?
A. Public
B. Top secret
C. Proprietary
D. Open-source
C. Proprietary
A Chief Security Officer (CSO) is concerned that cloud-based services are not adequately protected from advanced threats and malware. The CSO believes there is a high risk that a data breach could occur in the near future due to the lack of detective and preventive controls.
Which of the following should be implemented to BEST address the CSO’s concerns? (Choose two.)
A. A WAF
B. A CASB
C. An NG-SWG
D. Segmentation
E. Encryption
F. Containerization
C. An NG-SWG
D. Segmentation
An organization is planning to roll out a new mobile device policy and issue each employee a new laptop. These laptops would access the users’ corporate operating system remotely and allow them to use the laptops for purposes outside of their job roles.
Which of the following deployment models is being utilized?
A. MDM and application management
B. BYOD and containers
C. COPE and VDI
D. CYOD and VMs
B. BYOD and containers
