A cloud engineer is running a latency-sensitive workload that must be resilient and highly available across multiple regions. Which of the following concepts best addresses these requirements?
Answer(s): B
Clustering enables multiple instances of an application or service to work together as a single system, providing high availability and resilience across multiple regions. This approach helps in distributing workloads, improving fault tolerance, and reducing downtime in case of failures. It ensures that if one node or region goes down, the workload can continue running on another node in a different region, meeting the latency-sensitive and high-availability requirements of the workload.
A cloud engineer is in charge of deploying a platform in an IaaS public cloud. The application tracks the state using session cookies and there are no affinity restrictions. Which of the following will help the engineer reduce monthly expenses and allow the application to provide the service?
Answer(s): D
The pay-as-you-go (PAYG) model allows the cloud engineer to optimize costs by paying only for the resources actually used, rather than committing to long-term reserved instances or dedicated hosts. Since the application uses session cookies for tracking state and has no affinity restrictions, it can efficiently scale up or down based on demand. This flexibility helps reduce monthly expenses by avoiding over-provisioning and ensuring resources are used efficiently.
A cloud administrator recently created three servers in the cloud. The goal was to create ACLs so the servers could not communicate with each other. The servers were configured with the following IP addresses:After implementing the ACLs, the administrator confirmed that some servers are still able to reach the other servers. Which of the following should the administrator change to prevent the servers from being on the same network?
Answer(s): C
A company implements a web farm with 100 servers behind an application load balancer. During scaling events, new web servers that are placed in service have not loaded all their modules, which causes some requests to the web farm to fail. Which of the following should the cloud engineer implement to address the scaling issue?
Answer(s): A
Instance warm-up ensures that new instances in an auto-scaling environment are fully operational before they start receiving traffic. When new web servers are launched, they may require time to load modules, initialize services, or complete startup scripts. By implementing instance warm-up, the cloud engineer can delay traffic to newly created instances until they are fully ready, preventing failed requests and improving reliability during scaling events.
A CI/CD pipeline is used to deploy VMs to an IaaS environment. Which of the following can be used to harden the operating system once the VM is running?
Ansible is an automation tool used for configuration management, system hardening, and security enforcement on VMs. Once a VM is deployed in an IaaS environment, Ansible can be used to apply security patches, configure firewalls, enforce compliance policies, and implement security best practices to harden the operating system. It allows for automated, repeatable, and scalable security configurations, ensuring that VMs meet security and compliance standards.
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