CompTIA CV0-003 Exam Practice Questions (P. 2)

GPT-4o - Answer

Vendor lock-in is a significant concern for companies using a specific cloud provider's PaaS platform, especially when developed features are tightly integrated with the provider's unique tools and services. This dependency can create challenges in migrating to a different cloud provider or adopting a multicloud strategy, as it may limit flexibility and increase transition costs due to the need to adapt or redesign the application to fit another environment. Keep in mind, vendor lock-in doesn't just affect operational flexibility but also strategic IT decisions.

GPT-4o - Answer

While it's valuable to make sure the server's RDP service is up and running, a refused RDP connection usually hints at firewall settings first. Since ICMP responses confirm the server is reachable, the refusal of the RDP session often results from the firewall blocking it. Always check if the firewall allows traffic on TCP port 3389, the default port for RDP, as this is a frequent oversight in network troubleshooting.

GPT-4o - Answer

A tabletop exercise is undoubtedly the best choice when it comes to discussing individual roles and actions in incident response or disaster recovery situations. Through these exercises, team members can interactively simulate various disaster scenarios. This interactive environment helps them pinpoint potential issues, understand their specific roles, and refine response strategies in a realistic yet controlled setting. More importantly, it ensures all participants are aligned and clear on what actions to take during actual incidents, making it more practical than simply referring to documentation or plans.

GPT-4o - Answer

The issue described likely stems from the use of a self-signed certificate for the TLS connection of the cloud web server. Generally, when applications are migrated to a public cloud and retain the same security configurations used internally, issues can arise if those configurations, such as self-signed certificates, are not universally trusted. Older operating systems may have stricter or outdated trust stores that do not recognize self-signed certificates, preventing these systems from establishing a secure connection to the server. Transitioning to a certificate issued by a recognized public certificate authority would be a recommended step to ensure broader compatibility and trust.

GPT-4o - Answer

RAID 5 is indeed the optimal choice when the priority is to maximize storage capacity while maintaining necessary redundancy. Its storage efficiency is due to the use of a single disk's worth of space for parity, allowing (N-1)X storage capacity where N represents total disks, and X is the individual disk capacity. This configuration strikes a good balance by using less space for parity compared to RAID 6 or RAID 50, and more storage capacity compared to RAID 10, which dedicates half the total disk space to redundancy. Thus, for situations where redundancy is also handled by replication elsewhere, RAID 5 maximizes usable storage space.

GPT-4o - Answer

The correct choice, option A, ensures high availability and horizontal scaling across regions and effectively utilizes the IP address space. Each /25 subnet provides 128 addresses; however, for usability in strict networking terms, only 126 are typically used because of network and broadcast addresses. Deducting five reserved IPs per subnet, we still comfortably exceed the necessary 60 nodes per region, thus meeting all given requirements efficiently without any IP wastage. Furthermore, the segmentation into two /25 subnets aligns perfectly within the confines of the /24 network range, logically subdividing the space without any overlaps or waste.

GPT-4o - Answer

Investigating switch power first makes the most sense here. Since the servers were up and running without power issues but were still inaccessible, this points us toward a connectivity problem, likely at the switch level. It's vital to ensure that the switches maintaining network connections for these servers are consistently powered and functioning correctly to avoid such downtime. This approach immediately addresses the potential point of failure highlighted by the scenario.

GPT-4o - Answer

Hardening is indeed the best option when a cloud provider wants to secure their IaaS environment by restricting capabilities such as installing a hypervisor. Hardening encompasses strategies aimed at tightening security measures, ensuring that deployments follow the principle of least privilege. This focused approach ensures users have only the access they require, effectively preventing unauthorized configurations and installations, such as adding a non-sanctioned hypervisor.

GPT-4o - Answer

When configuring a cloud tenant, retaining a 30% resource buffer for hypervisor performance is crucial, translating to 63GB of memory and 84 cores being available. While answer D appears to utilize all resources without accounting for this necessary buffer, answer B, which proposes 40 VMs, each with 1.5GB of memory (totaling 60GB) and consuming 80 cores, efficiently uses the resources and maintains the buffer. Thus, for maximum efficiency while adhering to the buffer constraint, option B would also be highly suitable. Ensure your calculations consider both memory and cores to optimize cloud resource allocation effectively.