I can see the logic for off-site backups, but redundant network connections would be a higher priority for resiliency assuming that there are local backups. Any non-chatGpt documentation out there to back either up?

*On exam taken in September 21th 2023*

should be simple, but not sure why so many D. NIC teaming is for increasing bandwidth, while it sounds increasing the traffic, but it is really not resiliency talking about. Search online, and you will understand resiliency. Or, think of this scenario, in case of disaster in this datacenter, if you have a off site backup, the Load balancer will introduce traffic to that off site backup site (active/passive mode), therefore, maintain the uptime.

A. Dual power supply B. Off-site backups Here's why: A. Dual power supply: Dual power supplies provide redundancy in case one power source fails, ensuring continuous power supply to critical infrastructure components such as servers, switches, and storage devices. This redundancy helps minimize downtime and ensures high availability of services in the event of a power outage. B. Off-site backups: Off-site backups involve storing backup copies of data in a separate location from the primary datacenter. This provides protection against data loss due to disasters such as fires, floods, or other incidents that could affect the primary datacenter. Off-site backups ensure that data can be restored even if the primary datacenter is compromised, contributing to overall resiliency and uptime. Together, dual power supply and off-site backups help enhance the resiliency and uptime of the new datacenter by addressing potential points of failure and providing safeguards against data loss.

NIC teaming is resilience

AD makes more sense

In terms of Comptia, one of the ways to have a 'resilient' data Centre is to have a cluster of Servers working as one and that is achievable through 'NIC teaming' technique, For Uptime, the only option we have is 'Dual power supply'.

A dual power supply ensures redundancy in case one power source fails, contributing to resiliency and uptime. Off-site backups are essential for data recovery in the event of a disaster at the primary datacenter. Both these measures contribute to increased reliability and availability of services.

A. Dual Power Supply & B. Off-site Backup The key words are resiliency and uptime. I believe that NIC teaming is associated with redundancy. There are indeed differences between resiliency and redundancy. I found this explanation from www.oreilly.com and it really helped me to understand the differences. “Redundancy is something that is done to prevent failure, implying that it happens before an issue happens. Resiliency, from the word resolve, relates to how to find solutions after a problem has occurred. Redundancy is before the issue. Resiliency is after. For example, redundant databases with replication can be utilized. Multiple components and copies of data create a redundant design. If the primary side of the database pair fails, the secondary side will promote to primary and begin to pick up the load while the failed side self-repairs. The failover and self-healing functions are resiliency. Both are related, but not ...“ This explains NIC’s redundancy put in place to prevent failures. Off-site backups (resiliency) are put in place to work after a failure.

What Is Data Resiliency? Data resiliency refers to the ability of an organization to protect, recover, and maintain its data in the face of unexpected events or disruptions. These events can include hardware failures, software glitches, cyberattacks, natural disasters, or human errors. A resilient data infrastructure is designed to prevent data loss, minimize downtime, and quickly recover from any adverse situations. Source of information:https://www.purestorage.com/tw/knowledge/what-is-data-resiliency.html

actually chat gpt said this just now: Answer: A. Dual power supply Answer: D. NIC teaming

New Data Center... resiliency and redundancy... A. Dual Power Source (Resilience/Power Redundancy) D. NIC Teeming (Network Traffic Improvement/Uptime)

AD Off-site backups: While crucial for data protection and recovery, off-site backups are more focused on data integrity and disaster recovery rather than immediate uptime during hardware failures.

A. Dual power supply D. NIC teaming Backups can help with resiliency but not as much for uptime.

offsite back ups aren't going to help with the uptime of this data centre answer AD

chatgpt: To achieve the best resiliency and uptime for a new datacenter, the two options that would BEST meet this objective are: Dual power supply (A): Having redundant power supplies can prevent downtime in case one power supply fails. This ensures continuous power to critical equipment. Off-site backups (B): Storing backups off-site ensures data recovery in case of disasters or data center failures, contributing to higher uptime and data protection. These two options provide redundancy and data protection, which are key elements for resiliency and uptime in a datacenter.

I choose A and D