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>> Latest CAS-005 Exam Answers <<
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NEW QUESTION # 255
An organization is researching the automation capabilities for systems within an OT network. A security analyst wants to assist with creating secure coding practices and would like to learn about the programming languages used on the PLCs. Which of the following programming languages is the most relevant for PLCs?
Answer: C
Explanation:
Programmable Logic Controllers (PLCs) in Operational Technology (OT) environments commonly use Ladder Logic, a graphical programming language resembling electrical relay logic diagrams. It's the most relevant for PLCs due to its widespread use in industrial automation.
* Option A:Ladder Logic is the standard for PLC programming, making it the best choice.
* Option B:Rust is modern and secure but not typically used for PLCs.
* Option C:C is used in some embedded systems but less common for PLCs.
* Option D:Python is versatile but not native to PLC programming.
* Option E:Java is rare in PLC contexts.
NEW QUESTION # 256
A systems administrator wants to introduce a newly released feature for an internal application.
The administrate docs not want to test the feature in the production environment. Which of the following locations is the best place to test the new feature?
Answer: B
Explanation:
The best location to test a newly released feature for an internal application, without affecting the production environment, is the staging environment.
Staging Environment: This environment closely mirrors the production environment in terms of hardware, software, configurations, and settings. It serves as a final testing ground before deploying changes to production. Testing in the staging environment ensures that the new feature will behave as expected in the actual production setup.
Isolation from Production: The staging environment is isolated from production, which means any issues arising from the new feature will not impact the live users or the integrity of the production data. This aligns with best practices in change management and risk mitigation.
Realistic Testing: Since the staging environment replicates the production environment, it provides realistic testing conditions. This helps in identifying potential issues that might not be apparent in a development or testing environment, which often have different configurations and workloads.
NEW QUESTION # 257
A firewall administrator needs to ensure all traffic across the company network is inspected. The administrator gathers data and finds the following information regarding the typical traffic in the network:
Which of the following is the best solution to ensure the administrator can complete the assigned task?
Answer: A
Explanation:
With over 91% of your traffic on TCP/443, virtually all of your users' web sessions are encrypted HTTPS. Without decrypting that traffic, your firewall (or proxy) can't perform deep inspection.
Enabling SSL/TLS decryption (often via a transparent proxy or decryption appliance) lets you terminate and re-encrypt sessions so you can apply your security policies, ensuring that the bulk of your network traffic is fully inspected.
NEW QUESTION # 258
Which of the following best describes the reason a network architect would enable forward secrecy on all VPN tunnels?
Answer: C
Explanation:
Forward secrecy (also known as perfect forward secrecy, PFS) ensures that session keys used in a VPN tunnel are ephemeral, meaning that even if an attacker compromises a long-term private key, past sessions cannot be decrypted. According to the CompTIA SecurityX CAS-005 study guide (Domain 3: Cybersecurity Technology, 3.1), enabling forward secrecy on VPN tunnels reduces the risk of cryptanalysis by ensuring that each session's encryption key is unique and not derived from a single compromised key. This directly mitigates the impact of attacks like key theft or future decryption attempts.
Option A: Forward secrecy is not required for hardware-accelerated cryptography, which depends on processor capabilities, not key management.
Option C: While confidentiality is important, this is too vague and does not specifically explain why forward secrecy is chosen.
Option D: Modern protocols (e.g., TLS 1.3, IPsec with ECDHE) support forward secrecy but do not mandate it as a prerequisite for use.
Option B: This is the most precise, as forward secrecy directly reduces the success of cryptanalysis by limiting the scope of key compromise.
Reference:
CompTIA SecurityX CAS-005 Official Study Guide, Domain 3: Cybersecurity Technology, Section 3.1: "Explain cryptographic techniques, including perfect forward secrecy." CAS-005 Exam Objectives, 3.1: "Evaluate the impact of cryptographic configurations on security."
NEW QUESTION # 259
An organization is planning for disaster recovery and continuity of operations, and has noted the following relevant findings:
1. A natural disaster may disrupt operations at Site A, which would then cause an evacuation. Users are unable to log into the domain from-their workstations after relocating to Site B.
2. A natural disaster may disrupt operations at Site A, which would then cause the pump room at Site B to become inoperable.
3. A natural disaster may disrupt operations at Site A, which would then cause unreliable internet connectivity at Site B due to route flapping.
INSTRUCTIONS
Match each relevant finding to the affected host by clicking on the host name and selecting the appropriate number.
For findings 1 and 2, select the items that should be replicated to Site B. For finding 3, select the item requiring configuration changes, then select the appropriate corrective action from the drop-down menu.
Answer:
Explanation:
See the complete solution below in Explanation:
Explanation:
Matching Relevant Findings to the Affected Hosts:
Finding 1:
Affected Host: DNS
Reason: Users are unable to log into the domain from their workstations after relocating to Site B, which implies a failure in domain name services that are critical for user authentication and domain login.
Finding 2:
Affected Host: Pumps
Reason: The pump room at Site B becoming inoperable directly points to the critical infrastructure components associated with pumping operations.
Finding 3:
Affected Host: VPN Concentrator
Reason: Unreliable internet connectivity at Site B due to route flapping indicates issues with network routing, which is often managed by VPN concentrators that handle site-to-site connectivity.
Corrective Actions for Finding 3:
Finding 3 Corrective Action:
Action: Modify the BGP configuration
Reason: Route flapping is often related to issues with Border Gateway Protocol (BGP) configurations.
Adjusting BGP settings can stabilize routes and improve internet connectivity reliability.
Replication to Site B for Finding 1:
Affected Host: DNS
Domain Name System (DNS) services are essential for translating domain names into IP addresses, allowing users to log into the network. Replicating DNS services ensures that even if Site A is disrupted, users at Site B can still authenticate and access necessary resources.
Replication to Site B for Finding 2:
Affected Host: Pumps
The operation of the pump room is crucial for maintaining various functions within the infrastructure.
Replicating the control systems and configurations for the pumps at Site B ensures that operations can continue smoothly even if Site A is affected.
Configuration Changes for Finding 3:
Affected Host: VPN Concentrator
Route flapping is a situation where routes become unstable, causing frequent changes in the best path for data to travel. This instability can be mitigated by modifying BGP configurations to ensure more stable routing.
VPN concentrators, which manage connections between sites, are typically configured with BGP for optimal routing.
References:
CompTIA Security+ Study Guide: This guide provides detailed information on disaster recovery and continuity of operations, emphasizing the importance of replicating critical services and making necessary configuration changes to ensure seamless operation during disruptions.
CompTIA Security+ Exam Objectives: These objectives highlight key areas in disaster recovery planning, including the replication of critical services and network configuration adjustments.
Disaster Recovery and Business Continuity Planning (DRBCP): This resource outlines best practices for ensuring that operations can continue at an alternate site during a disaster, including the replication of essential services and network stability measures.
By ensuring that critical services like DNS and control systems for pumps are replicated at the alternate site, and by addressing network routing issues through proper BGP configuration, the organization can maintain operational continuity and minimize the impact of natural disasters on their operations.
NEW QUESTION # 260
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