Pass CV0-003 Exam Guide

A .yaml file is a common file type for defining the configuration and deployment of application containers in a cloud environment. YAML stands for YAML Ain’t Markup Language, and it is a human-readable data serialization language that uses indentation and keywords to represent the structure and values of the data1. A .yaml file can specify the properties of the container, such as the image, ports, environment variables, volumes, resources, and scaling rules. For example, to modify the replication factor of an automated application container from 3 to 5, the systems administrator can edit the .yaml file on the master controller and change the value of the replicas field under the spec section2. For example:

apiVersion: apps/v1 kind: Deployment metadata: name: my-app spec: replicas: 5 # change this value from 3 to 5 selector: matchLabels: app: my-app template: metadata: labels: app: my-app spec: containers: - name: my-app image: my-app-image ports: - containerPort: 80

A .txt file is a plain text file that can store any kind of text data, but it is not a standard format for defining container configurations. A .conf file is a configuration file that can store settings and parameters for various applications or services, but it is not commonly used for container deployments. A .etcd file is not a valid file type, but etcd is a distributed key-value store that provides a reliable way to store data across a cluster of machines3. Etcd is often used by Kubernetes, a popular platform for managing containerized applications, to store and synchronize the cluster state. However, etcd does not store the configuration files of the containers, but rather the runtime data of the cluster. Therefore, none of these options are correct.

An application whitelisting policy is a set of rules that specifies which applications are allowed to run on a system or a network. Application whitelisting is a security technique that can prevent unauthorized or malicious software from executing, and it is often used in VDI (Virtual Desktop Infrastructure) environments to provide end users with access to limited applications. A cloud administrator who is responsible for managing a VDI environment should make changes to the application whitelisting policy when a new application needs to be provided, as this would ensure that the new application is authorized and compatible with the VDI environment.

The best option to reduce the latency issues for the marketing team that is primarily based in Europe when retrieving the marketing materials that are hosted on a public IaaS service is to integrate a CDN (content delivery network) solution to distribute web content globally. A CDN is a network of geographically distributed servers that cache and deliver web content to users based on their proximity and network conditions. A CDN can improve the performance and availability of web content by reducing the distance and hops between the users and the servers, as well as offloading the traffic from the origin server. Reference: [CompTIA Cloud+ Certification Exam Objectives], Domain 3.0 Maintenance, Objective 3.4 Given a scenario, implement automation and orchestration to optimize cloud operations

User quotas are a feature that allows the administrator to limit the amount of storage space that a user or a group of users can consume on a file server. User quotas can help to control storage usage by preventing users from storing excessive or unnecessary files, as well as by enforcing fair and consistent storage policies across the organization. User quotas can also help to monitor and report on the storage consumption and trends of the users, and alert the administrator or the users when they are approaching or exceeding their quota limits.