PCCET Reviews Questions

CaaS, or Containers-as-a-Service, is a cloud service that allows users to manage and deploy applications using containers and clusters. CaaS can be situated between IaaS and PaaS in the spread of cloud computing services, based on how much is managed by the vendor. IaaS, or Infrastructure-as-a-Service, provides the lowest level of abstraction, where users have to manage the servers, storage, network, and operating system. PaaS, or Platform-as-a-Service, provides a higher level of abstraction, where users only have to manage the application code and data. FaaS, or Function-as-a-Service, provides the highest level of abstraction, where users only have to manage the functions or logic of the application. CaaS falls in between IaaS and PaaS, as it provides users with more control over the container orchestration and configuration than PaaS, but also simplifies the infrastructure management and scaling than IaaS123. References:

• What is CaaS? from Red Hat
• Containers as a Service from Atlassian
• Container as a Service (CaaS) from GeeksforGeeks

Elastic scalability is the feature of the VM-Series firewalls that allows them to fully integrate into the DevOps workflows and CI/CD pipelines without slowing the pace of business. Elastic scalability means that the VM-Series firewalls can automatically adjust their capacity and performance based on the changing demand and workload of the applications they protect. This enables the VM-Series firewalls to provide consistent and optimal security across multiple cloud environments, while also reducing operational costs and complexity. Elastic scalability also allows the VM-Series firewalls to seamlessly integrate with automation and orchestration tools, such as Terraform, Ansible, and AWS CloudFormation, that are commonly used in DevOps processes. This way, the VM-Series firewalls can be deployed and managed as part of the application development lifecycle and CI/CD pipelines, ensuring that security is always aligned with the business needs and objectives. References: VM-Series Virtual Next-Generation Firewall - Palo Alto Networks, Securing Multi-Cloud Environments with VM-Series Virtual Firewalls, Terraform Modules for Palo Alto Networks VM-Series on AWS.

According to the NIST definition, cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction1. One of the essential characteristics of cloud computing is on-demand self-service, which means that users can request and obtain computing resources as needed, without requiring human intervention from the service provider2. On-demand network services are an example of this characteristic, as they allow users to access network resources such as bandwidth, routing, firewall, or load balancing, on demand and in a scalable manner3. References:

• The NIST definition of cloud computing
• SP 800-145, The NIST Definition of Cloud Computing | CSRC
• On-Demand Network Services - Palo Alto Networks