CompTIA CS0-001 Exam Dumps

CompTIA CS0-001 Sample Question Answers

Question # 1

An employee at an insurance company is processing claims that include patient addresses,clinic visits, diagnosis information, and prescription. While forwarding documentation to thesupervisor, the employee accidentally sends the data to a personal email address outsideof the company due to a typo. Which of the following types of data has been compromised?

A. PCI
B. Proprietary information
C. Intellectual property
D. PHI

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Question # 2

When performing reverse engineering, which of the following file types would be MOSTeasily decompiled Into source code?

A. so
B. .exe
C. .Jar
D. a

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Question # 3

Ransomware is identified on a company's network that affects both Windows and MAC hosts. The command and control channel for encryption for this variant uses TCP ports from 11000 to 65000. The channel goes to good1. Iholdbadkeys.com, which resolves to IP address 72.172.16.2. Which of the following is the MOST effective way to prevent any newly infected systems from actually encrypting the data on connected network drives while causing the least disruption to normal Internet traffic?

A. Block all outbound traffic to web host good1 iholdbadkeys.com at the border gateway.  
B. Block all outbound TCP connections to IP host address 172.172.16.2 at the border gateway.
C. Block all outbound traffic on TCP ports 11000 to 65000 at the border gateway.  
D. Block all outbound traffic on TCP ports 11000 to 65000 to IP host address 172.172.16.2 at the border gateway. 

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Question # 4

Which of the following organizations would have to remediate embedded controllervulnerabilities?

A. Banking institutions
B. Public universities
C. Regulatory agencies
D. Hydroelectric facilities

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Question # 5

A worm was detected on multiple PCs within the remote office. The security analystrecommended that the remote office be blocked from the corporate network during theincident response. Which of the following processes BEST describes thisrecommendation?

A. Logical isolation of the remote office
B. Sanitization of the network environment
C. Segmentation of the network
D. Secure disposal of affected systems

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Question # 6

After a review of user account activity. It appears certain user accounts were being used to access critical systems that are unrelated to the users' roles and responsibilities. The user accounts in question were disabled, but then other user accounts were used to perform the same activity soon after. Which of the following Is the BEST remediation to stop this violation?

A. Reconfigure RADIUS.
B. Implement MFA.
C. Upgrade to the latest TLS.
D. Salt password hashes.

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Question # 7

An organization wants to remediate vulnerabilities associated with its web servers. An initialvulnerability scan has been performed, and analysts are reviewing the results. Beforestarting any remediation, the analysts want to remove false positives to avoid spendingtime on issues that are not actual vulnerabilities. Which of the following would be anindicator of a likely false positive?

A. Reports indicate that findings are informational.
B. Any items labeled ‘low’ are considered informational only.
C. The scan result version is different from the automated asset inventory.
D. ‘HTTPS’ entries indicate the web page is encrypted securely.

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Question # 8

A security analyst has performed various scans and found vulnerabilities in several applications that affect production data. Remediation of all exploits may cause certain applications to no longer work. Which of the following activities would need to be conducted BEFORE remediation?

A. Fuzzing
B. Input validation
C. Change control
D. Sandboxing

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Question # 9

A security analyst discovers a network intrusion and quickly solves the problem by closingan unused port. Which of the following should be completed?

A. Vulnerability report
B. Memorandum of agreement
C. Reverse-engineering incident report
D. Lessons learned report

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Question # 10

A security analyst is reviewing output from a CVE-based vulnerability scanner. Before conducting the scan, the analyst was careful to select only Windows-based servers in a specific datacenter. The scan revealed that the datacenter includes 27 machines running Windows 2003 Server Edition (Win2003SE). In 2015, there were 36 new vulnerabilities discovered in the Win2003SE environment. Which of the following statements are MOST likely applicable? (Choose two.) 

A. Remediation is likely to require some form of compensating control.  
B. Microsoft’s published schedule for updates and patches for Win2003SE have continued uninterrupted.
C. Third-party vendors have addressed all of the necessary updates and patches required by Win2003SE. 
D. The resulting report on the vulnerability scan should include some reference that the scan of the datacenter included 27 Win2003SE machines that should be scheduled for replacement and deactivation.
E. Remediation of all Win2003SE machines requires changes to configuration settings and compensating controls to be made through Microsoft Security Center’s Win2003SE Advanced Configuration Toolkit. 

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Question # 11

A company has a large number of users who need to access corporate resources ornetworks from various locations. Many users have VPN access to the network, as well aswireless internet access from BYOD approved systems tablets and smartphones. Theusers can also access corporate resources from an internal-facing web portal now ever allof these services require a separate set of credentials. Which of the following should thecybersecurity analyst recommend to aggregate and audit on logins while allowing thecorporate directory services credentials to be shared across all of the services?

A. SAML
B. Kerberos
C. SSO
D. RADIUS

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Question # 12

A security operations team was alerted to abnormal DNS activity coming from a user’s machine. The team performed a forensic investigation and discovered a host had been compromised. Malicious code was using DNS as a tunnel to extract data from the client machine, which had been leaked and transferred to an unsecure public Internet site. Which of the following BEST describes the attack?

A. Phishing
B. Pharming
C. Cache poisoning
D. Data exfiltration

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Question # 13

Malicious users utilized brute force to access a system. An analyst is investigating these attacks and recommends methods to management that would help secure the system. Which of the following controls should the analyst recommend? (Choose three.)

A. Multifactor authentication  
B. Network segmentation  
C. Single sign-on  
D. Encryption  
E. Complexity policy  
F. Biometrics  
G. Obfuscation  

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Question # 14

Several accounting department users are reporting unusual Internet traffic in the browsinghistory of their workstations after returning to work and logging in. The building securityteam informs the IT security team that the cleaning staff was caught using the systemsafter the accounting department users left for the day. Which of the following steps shouldthe IT security team take to help prevent this from happening again? (Choose two.)

A. Install a web monitor application to track Internet usage after hours.  
B. Configure a policy for workstation account timeout at three minutes.  
C. Configure NAC to set time-based restrictions on the accounting group to normal business hours. 
D. Configure mandatory access controls to allow only accounting department users to access the workstations. 
E. Set up a camera to monitor the workstations for unauthorized use.  

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Question # 15

During a recent breach, an attacker was able to use tcpdump on a compromised Linux server to capture the password of a network administrator that logged into a switch using telnet. Which of the following compensating controls could be implemented to address this going forward?

A. Whitelist tcpdump of Linux servers.
B. Change the network administrator password to a more complex one.
C. Implement separation of duties.
D. Require SSH on network devices.

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Question # 16

Which of the following is the BEST way to share incident-related artifacts to provide nonrepudiation?

A. Secure email
B. Encrypted USB drives
C. Cloud containers
D. Network folders

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Question # 17

A suite of three production servers that were originally configured identically underwent the same vulnerability scans. However, recent results revealed the three servers has different critical vulnerabilities. The servers are not accessible by the Internet, and AV programs have not detected any malware. The servers’ syslog files do not show any unusual traffic since they were installed and are physically isolated in an off-site datacenter. Checksum testing of random executables does not reveal tampering. Which of the following scenarios is MOST likely?

A. Servers have not been scanned with the latest vulnerability signature
B. Servers have been attacked by outsiders using zero-day vulnerabilities
C. Servers were made by different manufacturers
D. Servers have received different levels of attention during previous patch managementevents

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Question # 18

In comparison to non-industrial IT vendors, ICS equipment vendors generally: 

A. rely less on proprietary code in their hardware products.
B. have more mature software development models.
C. release software updates less frequently.
D. provide more expensive vulnerability reporting.

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Question # 19

A staff member reported that a laptop has degraded performance. The security analyst hasinvestigated the issue and discovered that CPU utilization, memory utilization, andoutbound network traffic are consuming the laptop resources. Which of the following is theBEST course of actions to resolve the problem?

A. Identify and remove malicious processes.
B. Disable scheduled tasks.
C. Suspend virus scan.
D. Increase laptop memory.
E. Ensure the laptop OS is properly patched.

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Question # 20

A company decides to move three of its business applications to different outsourced cloud providers. After moving the applications, the users report the applications time out too quickly and too much time is spent logging back into the different web-based applications throughout the day. Which of the following should a security architect recommend to improve the end-user experience without lowering the security posture?

A. Configure directory services with a federation provider to manage accounts.
B. Create a group policy to extend the default system lockout period.
C. Configure a web browser to cache the user credentials.
D. Configure user accounts for self-service account management.

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Question # 21

Management wants to scan servers for vulnerabilities on a periodic basis. Managementhas decided that the scan frequency should be determined only by vendor patch schedulesand the organization’s application deployment schedule. Which of the following would forcethe organization to conduct an out-of-cycle vulnerability scan?

A. Newly discovered PII on a server
B. A vendor releases a critical patch update
C. A critical bug fix in the organization’s application
D. False positives identified in production

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Question # 22

A vulnerability analyst needs to identify all systems with unauthorized web servers on the10.1.1.0/24 network. The analyst uses the following default Nmap scan:nmap –sV –p 1-65535 10.1.1.0/24Which of the following would be the result of running the above command?

A. This scan checks all TCP ports.
B. This scan probes all ports and returns open ones.
C. This scan checks all TCP ports and returns versions.
D. This scan identifies unauthorized servers.

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Question # 23

A company has monthly scheduled windows for patching servers and applying configuration changes. Out-of-window changes can be done, but they are discouraged unless absolutely necessary. The systems administrator is reviewing the weekly vulnerability scan report that was just released. Which of the following vulnerabilities should the administrator fix without waiting for the next scheduled change window?  

A. The administrator should fix dns (53/tcp). BIND ‘NAMED’ is an open-source DNS server from ISC.org. The BIND-based NAMED server (or DNS servers) allow remote users to query for version and type information. 
B. The administrator should fix smtp (25/tcp). The remote SMTP server is insufficiently protected against relaying. This means spammers might be able to use the company’s mail server to send their emails to the world. 
C. The administrator should fix http (80/tcp). An information leak occurs on Apache web servers with the UserDir module enabled, allowing an attacker to enumerate accounts by requesting access to home directories and monitoring the response. 
D. The administrator should fix http (80/tcp). The ‘greeting.cgi’ script is installed. This CGI has a well-known security flaw that lets anyone execute arbitrary commands with the privileges of the http daemon
E. The administrator should fix general/tcp. The remote host does not discard TCP SYN packets that have the FIN flag set. Depending on the kind of firewall a company is using, an attacker may use this flaw to bypass its rules. 

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Question # 24

The security team has determined that the current incident response resources cannot meet management’s objective to secure a forensic image for all serious security incidents within 24 hours. Which of the following compensating controls can be used to help meet management’s expectations?

A. Separation of duties
B. Scheduled reviews
C. Dual control
D. Outsourcing

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Question # 25

The security team for a large, international organization is developing a vulnerabilitymanagement program. The development staff has expressed concern that the newprogram will cause service interruptions and downtime as vulnerabilities are remedied.Which of the following should the security team implement FIRST as a core component ofthe remediation process to address this concern?

A. Automated patch management
B. Change control procedures
C. Security regression testing
D. Isolation of vulnerable servers

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Question # 26

A security analyst performed a review of an organization’s software development life cycle. The analyst reports that the life cycle does not contain in a phase in which team members evaluate and provide critical feedback on another developer’s code. Which of the following assessment techniques is BEST for describing the analyst’s report?

A. Architectural evaluation  
B. Waterfall  
C. Whitebox testing  
D. Peer review  

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Question # 27

Which of the following is a vulnerability that is specific to hypervisors?

A. DDoS
B. VLAN hopping
C. Weak encryption
D. WMescape

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Question # 28

A company has implemented WPA2, a 20-character minimum for the WiFi passphrase, anda new WiFi passphrase every 30 days, and has disabled SSID broadcast on all wirelessaccess points. Which of the following is the company trying to mitigate?

A. Downgrade attacks
B. Rainbow tables
C. SSL pinning
D. Forced deauthentication

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Question # 29

Now regulations have come out that require a company to conduct regular vulnerability scans. Not wanting to be found with a vulnerability during an audit, the company wants the most accurate and complete vulnerability scan. Which of the following BEST meets this objective?

A. Regression scan
B. Port scan
C. SCAP scan
D. Agent-based scan

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Question # 30

A security team is implementing a new vulnerability management program in an environment that has a historically poor security posture. The team is aware of issues patch management in the environment and expects a large number of findings. Which of the following would be the MOST efficient way to increase the security posture of the organization in the shortest amount of time?

A. Create an SLA stating that remediation actions must occur within 30 days of discovery for all levels of vulnerabilities.
B. Incorporate prioritization levels into the remediation process and address critical findings first.
C. Create classification criteria for data residing on different servers and provide remediation only for servers housing sensitive data. 
D. Implement a change control policy that allows the security team to quickly deploy patches in the production environment to reduce the risk of any vulnerabilities found. 

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Question # 31

An analyst wants to build a lab with multiple workstations to practice penetration testing In a test environment. Which or the following will provide the analyst with the MOST penetration-testing-specific features? 

A. Nessus
B. Qualys
C. Metasport
D. Nexpose

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Question # 32

A logistics company’s vulnerability scan identifies the following vulnerabilities on Internetfacing devices in the DMZ:SQL injection on an infrequently used web server that provides files to vendorsSSL/TLS not used for a website that contains promotional informationThe scan also shows the following vulnerabilities on internal resources:Microsoft Office Remote Code Execution on test server for a human resourcessystemTLS downgrade vulnerability on a server in a development networkIn order of risk, which of the following should be patched FIRST?

A. Microsoft Office Remote Code Execution
B. SQL injection
C. SSL/TLS not used
D. TLS downgrade

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Question # 33

A security analyst has discovered that an outbound SFTP process is occurring at the sametime of day for the past several days. At the time this was discovered, large amounts ofbusiness critical data were delivered. The authentication for this process occurred using aservice account with proper credentials. The security analyst investigated the destination IPfor this transfer and discovered that this new process is not documented in the changemanagement log. Which of the following would be the BEST course of action for theanalyst to take?

A. Investigate a potential incident.
B. Verify user permissions.
C. Run a vulnerability scan.
D. Verify SLA with cloud provider.

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Question # 34

An analyst is preparing for a technical security compliance check on all Apache servers. Which of the following will be the BEST to use?

A. CIS benchmark
B. Nagios
C. OWASP
D. Untidy
E. Cain & Abel

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Question # 35

Joe, an analyst, has received notice that a vendor who is coming in for a presentation will require access to a server outside the network. Currently, users are only able to access remote sites through a VPN connection. Which of the following should Joe use to BEST accommodate the vendor?

A. Allow incoming IPSec traffic into the vendor’s IP address.
B. Set up a VPN account for the vendor, allowing access to the remote site.
C. Turn off the firewall while the vendor is in the office, allowing access to the remote site.
D. Write a firewall rule to allow the vendor to have access to the remote site.

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Question # 36

A list of vulnerabilities has been reported in a company’s most recent scan of a server. The security analyst must review the vulnerabilities and decide which ones should be remediated in the next change window and which ones can wait or may not need patching. Pending further investigation. Which of the following vulnerabilities should the analyst remediate FIRST?

A. The analyst should remediate https (443/tcp) first. This web server is susceptible to banner grabbing and was fingerprinted as Apache/1.3.27-9 on Linux w/ mod_fastcgi.
B. The analyst should remediate dns (53/tcp) first. The remote BIND 9 DNS server is susceptible to a buffer overflow, which may allow an attacker to gain a shell on this host or disable this server
C. The analyst should remediate imaps (993/tcp) first. The SSLv2 suite offers five strong ciphers and two weak “export class” ciphers. 
D. The analyst should remediate ftp (21/tcp) first. An outdated version of FTP is running on this port. If it is not in use, it should be disabled. 

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Question # 37

A malicious user taps into a network connection, and then Intercepts, sends, and receives data for other users, such as account numbers and passwords. Which of the following remediation’s would prevent the attack the malicious user Is using? 

A. Deploy two-factor authentication.
B. Configure browser proxy.
C. Implement an SSL VPN tunnel.
D. Sanitize web Input fields. 

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Question # 38

An organization suspects it has had a breach, and it is trying to determine the potentialimpact. The organization knows the following:The source of the breach is linked to an IP located in a foreign country.The breach is isolated to the research and development servers.The hash values of the data before and after the breach are unchanged.The affected servers were regularly patched, and a recent scan showed novulnerabilities.Which of the following conclusions can be drawn with respect to the threat and impact?(Choose two.)

A. The confidentiality of the data is unaffected.
B. The threat is an APT.
C. The source IP of the threat has been spoofed.
D. The integrity of the data is unaffected.
E. The threat is an insider.

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Question # 39

A company’s asset management software has been discovering a weekly increase in nonstandard software installed on end users’ machines with duplicate license keys. The security analyst wants to know if any of this software is listening on any non-standard ports, such as 6667. Which of the following tools should the analyst recommend to block any command and control traffic?

A. Netstat  
B. NIDS  
C. IPS  
D. HIDS  

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Question # 40

The development team recently moved a new application into production for the accountingdepartment. After this occurred, the Chief Information Officer (CIO) was contacted by thehead of accounting because the application is missing a key piece of functionality that isneeded to complete the corporation’s quarterly tax returns. Which of the following types oftesting would help prevent this from reoccurring?

A. Security regression testing
B. User acceptance testing
C. Input validation testing
D. Static code testing

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Question # 41

A company uses a managed IDS system, and a security analyst has noticed a largevolume of brute force password attacks originating from a single IP address. The analystput in a ticket with the IDS provider, but no action was taken for 24 hours, and the attackscontinued. Which of the following would be the BEST approach for the scenario described?

A. Draft a new MOU to include response incentive fees.
B. Reengineer the BPA to meet the organization’s needs.
C. Modify the SLA to support organizational requirements.
D. Implement an MOA to improve vendor responsiveness.

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Question # 42

A security analyst is creating ACLs on a perimeter firewall that will deny inbound packetsthat are from internal addresses, reversed external addresses, and multicast addresses.Which of the following is the analyst attempting to prevent?

A. Broadcast storms
B. Spoofing attacks
C. DDoS attacks
D. Man-in-the-middle attacks

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Question # 43

A corporation has implemented an 802.1X wireless network using self-signed certificates. Which of the following represents a risk to wireless users? 

A. Buffer overflow attacks
B. Cross-site scripting attacks
C. Man-in-the-middle attacks
D. Denial of service attacks

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Question # 44

A malicious hacker wants to gather guest credentials on a hotel 802.11 network. Which ofthe following tools is the malicious hacker going to use to gain access to information foundon the hotel network?

A. Nikto
B. Aircrak-ng
C. Nessus
D. tcpdump

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Question # 45

A security analyst received several service tickets reporting that a company storefront website is not accessible by internal domain users. However, external users are accessing the website without issue. Which of the following is the MOST likely reason for this behavior? 

A. The FQDN is incorrect.  
B. The DNS server is corrupted.  
C. The time synchronization server is corrupted.  
D. The certificate is expired.  

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Question # 46

An analyst identifies multiple instances of node-to-node communication between several endpoints within the 10.200.2.0/24 network and a user machine at the IP address 10.200.2.5. This user machine at the IP address 10.200.2.5 is also identified as initiating outbound communication during atypical business hours with several IP addresses that have recently appeared on threat feeds. Which of the following can be inferred from this activity?

A. 10.200.2.0/24 is infected with ransomware.
B. 10.200.2.0/24 is not routable address space.
C. 10.200.2.5 is a rogue endpoint.
D. 10.200.2.5 is exfiltrating data.

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