CompTIA CV0-004 Practice Test - Questions Answers, Page 18

The script shown is written in Terraform, which is an infrastructure as code (IaC) tool used for building, changing, and versioning infrastructure safely and efficiently. This particular Terraform script specifies a required provider and its version, the Terraform version, sets the cloud provider's region, and then defines a resource for a server instance with a specific AMI ID and instance type. It also includes tags for the instance. The action this script will perform is to create a new cloud resource, specifically a server instance on the cloud provider's platform.

Reference: CompTIA Cloud+ Study Guide (Exam CV0-004) by Todd Montgomery and Stephen Olson

For a biweekly payroll-processing solution that takes a significant amount of time to deploy to each new VM, the best scaling strategy is Scheduled scaling. This strategy involves preparing new instances in advance of when they are needed based on a known schedule, which in this case is the biweekly payroll process. By scheduling the scaling actions in advance, the cloud engineer ensures that the resources are ready when needed without incurring extra costs for running them all the time.

Reference: CompTIA Cloud+ Study Guide (Exam CV0-004) by Todd Montgomery and Stephen Olson

To allow subnets on different VPCs to communicate with each other over private channels, the cloud engineer should create peering connections between all the VPCs. VPC Peering allows networks to connect and route traffic using private IP addresses without the need for gateways, VPN connections, or separate physical hardware.

Reference: CompTIA Cloud+ Study Guide (Exam CV0-004) by Todd Montgomery and Stephen Olson

SR-IOV stands for Single Root I/O Virtualization, which is a technology that allows a physical network adapter to be partitioned into multiple virtual functions (VFs) that can be directly assigned to virtual machines (VMs). This way, the network traffic bypasses the software layer of the hypervisor and the virtual switch, and goes directly from the VM to the physical adapter. This reduces the CPU overhead, the network latency, and the packet loss, and improves the network throughput and scalability. SRIOV can achieve near-native performance for network-intensive applications, such as an integration application that communicates between different application and database servers. By enabling SRIOV capability on the physical server and the virtual server, the P2V migration can maintain the same level of network throughput and latency as the original physical machine. Reference: High performance network virtualization with SR-IOV; Supercharge Your Network Throughput via Single Root I/O Virtualization (SR-IOV); Overview of Single Root I/O Virtualization (SR-IOV).

Performance monitoring is a technique that collects and analyzes data about the services and resource utilization on VMs in a cloud environment. Performance monitoring can help the systems administrator to gather information about the CPU, memory, disk, network, and application performance of the VMs, as well as identify any bottlenecks, errors, or anomalies that may affect the cloud service quality. Performance monitoring can be implemented using various tools or agents that can collect and report the performance metrics from the VMs to a centralized dashboard or console.

Performance monitoring can also help the systems administrator to optimize, troubleshoot, and plan the cloud resources and services. Reference: CompTIA Cloud+ CV0-003 Certification Study Guide,

Changing the subnet mask to use a 255.255.255.128 range would allow for the potential server addition. The current subnet mask of 255.255.255.240 (/28) only allows for 14 usable host addresses in the 172.16.0.0 network, which is not enough to accommodate the existing eight servers and the possible 16 new servers. Changing the subnet mask to 255.255.255.128 (/25) would increase the number of usable host addresses to 126 in the same network, which is sufficient to handle the server expansion. Changing the IP address range to use a 10.0.0.0 address, changing the server template to add network interfaces, or changing the server scaling configuration to increase the maximum limit

would not solve the issue of the limited host addresses in the same network range.

FIM stands for File Integrity Monitoring, and it is a security technique that monitors and detects changes in files and directories. FIM can help the systems administrator to be notified every time an application’s configuration files are updated by generating alerts or reports when the files are modified, added, deleted, or accessed. FIM can also help verify the integrity and authenticity of the files by comparing their hashes or signatures with a baseline or a trusted source. FIM can be implemented using software tools or agents that run on the host or the network.

Peering is a networking technique that allows direct and private connection between two or more cloud networks without using the public Internet. Peering can help the cloud administrator improve the connectivity within the regions by reducing the latency, increasing the bandwidth, and enhancing the security of the data transfer. Peering can be implemented between VPCs within the same region or across different regions, depending on the CSP’s offerings and the customer’s requirements.

Peering can also help reduce the network costs by avoiding the use of the Internet gateways or VPNs.

Reference: CompTIA Cloud+ CV0-003 Certification Study Guide, Chapter 3, Objective 3.1: Given a