Palo Alto Networks PCSFE Online Practice Questions and Exam Preparation

Palo Alto Networks PCSFE Online Questions & Answers

• Question 11:

  Which software firewall would help a prospect interested in securing an environment with Kubernetes?

  A. KN-Series
  B. ML-Series
  C. VM-Series
  D. CN-Series
  D. CN-Series

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  Explanation/Reference:

  CN-Series firewall is the software firewall that would help a prospect interested in securing an environment with Kubernetes. Kubernetes is a platform that provides orchestration, automation, and management of containerized applications. Kubernetes environment requires network security that can protect the inter-service communication from cyberattacks and enforce granular security policies based on application or workload characteristics. CN-Series firewall is a containerized firewall that integrates with Kubernetes and provides visibility and control over container traffic. CN- Series firewall can help a prospect interested in securing an environment with Kubernetes by inspecting and enforcing security policies on traffic between containers within a pod, across pods, or across namespaces in a Kubernetes cluster. KN-Series, ML-Series, VM- Series, and Cloud next-generation firewall are not software firewalls that would help a prospect interested in securing an environment with Kubernetes, but they are related solutions that can be deployed on different platforms or environments. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [CN-Series Datasheet], [CN- Series Concepts], [What is Kubernetes?]

• Question 12:

  When implementing active-active high availability (HA), which feature must be configured to allow the HA pair to share a single IP address that may be used as the network's gateway IP address?

  A. ARP load sharing
  B. Floating IP address
  C. HSRP
  D. VRRP
  B. Floating IP address

• Question 13:

  A customer in a VMware ESXi environment wants to add a VM-Series firewall and partition an existing group of virtual machines (VMs) in the same subnet into two groups. One group requires no additional security, but the second group requires substantially more security.

  How can this partition be accomplished without editing the IP addresses or the default gateways of any of the guest VMs?

  A. Edit the IP address of all of the affected VMs. www*
  B. Create a new virtual switch and use the VM-Series firewall to separate virtual switches using virtual wire mode. Then move the guests that require more security into the new virtual switch.
  C. Create a Layer 3 interface in the same subnet as the VMs and then configure proxy Address Resolution Protocol (ARP).
  D. Send the VLAN out of the virtual environment into a hardware Palo Alto Networks firewall in Layer 3 mode. Use the same IP address as the old default gateway, then delete it.
  B. Create a new virtual switch and use the VM-Series firewall to separate virtual switches using virtual wire mode. Then move the guests that require more security into the new virtual switch.

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  Explanation/Reference:

  The partition can be accomplished without editing the IP addresses or the default gateways of any of the guest VMs by creating a new virtual switch and using the VM-Series firewall to separate virtual switches using virtual wire mode. Then move the guests that require more security into the new virtual switch. A virtual switch is a software- based switch that connects virtual machines (VMs) in a VMware ESXi environment. A virtual wire is a deployment mode of the VM-Series firewall that allows it to act as a bump in the wire between two network segments, without requiring an IP address or routing configuration. By creating a new virtual switch and using the VM-Series firewall to separate virtual switches using virtual wire mode, the customer can isolate the group of VMs that require more security from the rest of the network, and apply security policies to the traffic passing through the firewall. The partition cannot be accomplished without editing the IP addresses or the default gateways of any of the guest VMs by editing the IP address of all of the affected VMs, creating a Layer 3 interface in the same subnet as the VMs and then configuring proxy Address Resolution Protocol (ARP), or sending the VLAN out of the virtual environment into a hardware Palo Alto Networks firewall in Layer 3 mode. Use the same IP address as the old default gateway, then delete it, as those methods would require changing the network configuration of the guest VMs or introducing additional complexity and latency. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [Deploying Virtual Switches], [Virtual Wire Deployment], [Deploying Virtual Wire on VMware ESXi]

• Question 14:

  How are Palo Alto Networks Next-Generation Firewalls (NGFWs) deployed within a Cisco ACI architecture?

  A. SDN code hooks can help detonate malicious file samples designed to detect virtual environments.
  B. Traffic can be automatically redirected using static address objects.
  C. Service graphs are configured to allow their deployment.
  D. VXLAN or NVGRE traffic is terminated and inspected for translation to VLANs.
  C. Service graphs are configured to allow their deployment.

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  Explanation/Reference:

  Palo Alto Networks Next-Generation Firewalls (NGFWs) are deployed within a Cisco ACI architecture using service graphs. Service graphs are logical representations of how traffic flows through different network services, such as firewalls, load balancers, or routers. By configuring service graphs, you can insert NGFWs into the traffic path and apply security policies to the traffic. References: [Palo Alto Networks NGFW Integration with Cisco ACI]

• Question 15:

  Which element protects and hides an internal network in an outbound flow?

  A. DNS sinkholing
  B. User-ID
  C. App-ID
  D. NAT
  D. NAT

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  Explanation/Reference:

  NAT is the element that protects and hides an internal network in an outbound flow. NAT is a feature that translates the source or destination IP address or port of a packet as it passes through the firewall. NAT can protect and hide an internal network in an outbound flow by replacing the private IP addresses of the internal hosts with a public IP address of the firewall or another device, making them appear as a single entity to the external network. This prevents external hosts from directly accessing or identifying the internal hosts, and also conserves the public IP address space. DNS sinkholing, User-ID, and App-ID are not elements that protect and hide an internal network in an outbound flow, but they are related features that can enhance security and visibility. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [NAT Overview], [DNS Sinkholing Overview], [User-ID Overview], [App-ID Overview]

• Question 16:

  Which component scans for threats in allowed traffic?

  A. Intelligent Traffic Offload
  B. TLS decryption
  C. Security profiles
  D. NAT
  C. Security profiles

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  Explanation/Reference:

  Security profiles are the components that scan for threats in allowed traffic. Security profiles are sets of rules or settings that define how the firewall will inspect and handle traffic based on various threat prevention technologies, such as antivirus, anti- spyware, vulnerability protection, URL filtering, file blocking, data filtering, and WildFire analysis. Security profiles can be applied to Security policy rules to enforce granular protection against known and unknown threats in allowed traffic. Intelligent Traffic Offload, TLS decryption, and NAT are not components that scan for threats in allowed traffic, but they are related features that can enhance security and performance. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [Security Profiles Overview], [Threat Prevention Datasheet]

• Question 17:

  Which Palo Alto Networks firewall provides network security when deploying a microservices-based application?

  A. PA-Series
  B. ICN-Series
  C. VM-Series
  D. HA-Series
  B. ICN-Series

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  Explanation/Reference:

  CN-Series firewall is the Palo Alto Networks firewall that provides network security when deploying a microservices-based application. A microservices-based application is an application that consists of multiple independent and loosely coupled services that communicate with each other through APIs. A microservices-based application requires network security that can protect the inter-service communication from cyberattacks and enforce granular security policies based on application or workload characteristics. CN-Series firewall is a containerized firewall that integrates with Kubernetes and provides visibility and control over container traffic. CN-Series firewall can provide network security when deploying a microservices-based application by inspecting and enforcing security policies on traffic between containers within a pod, across pods, or across namespaces in a Kubernetes cluster. PA-Series, VM-Series, and HA-Series are not Palo Alto Networks firewalls that provide network security when deploying a microservices- based application, but they are related solutions that can be deployed on different platforms or environments. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [CN-Series Datasheet], [CN-Series Concepts], [What is a Microservices Architecture?]

• Question 18:

  Which feature must be configured in an NSX environment to ensure proper operation of a VM-Series firewall in order to secure east-west traffic?

  A. Deployment of the NSX DFW
  B. VMware Information Sources
  C. User-ID agent on a Windows domain server
  D. Device groups within VMware Services Manager
  A. Deployment of the NSX DFW

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  Explanation/Reference:

  Deployment of the NSX Distributed Firewall (DFW) must be configured in an NSX environment to ensure proper operation of a VM-Series firewall in order to secure east-west traffic. East-west traffic is the traffic that flows between applications or workloads within a network or a cloud environment. NSX environment is a private cloud environment that provides software-defined networking (SDN) and security for heterogeneous endpoints and workloads across multiple hypervisors, containers, bare metal servers, or clouds. NSX DFW is a feature that provides distributed stateful firewalling at the hypervisor level for every virtual machine (VM) in an NSX environment. Deployment of the NSX DFW must be configured in an NSX environment to ensure proper operation of a VM-Series firewall in order to secure east-west traffic by enabling features such as service insertion, policy redirection, service chaining, orchestration, monitoring, logging, and automation for VM- Series firewalls and Panorama on NSX environment. VMware Information Sources, User- ID agent on a Windows domain server, and device groups within VMware Services Manager do not need to be configured in an NSX environment to ensure proper operation of a VM-Series firewall in order to secure east-west traffic, as those are not required or relevant components for NSX integration. References: [Palo Alto Networks Certified Software Firewall Engineer (PCSFE)], [Deploy the VM-Series Firewall on VMware NSX-T], [What is VMware NSX-T?], [What is NSX Distributed Firewall?]

• Question 19:

  Which two elements of the Palo Alto Networks platform architecture enable security orchestration in a software-defined network (SDN)? (Choose two.)

  A. Full set of APIs enabling programmatic control of policy and configuration
  B. VXLAN support for network-layer abstraction
  C. Dynamic Address Groups to adapt Security policies dynamically
  D. NVGRE support for advanced VLAN integration
  A. Full set of APIs enabling programmatic control of policy and configuration
  C. Dynamic Address Groups to adapt Security policies dynamically

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  Explanation/Reference:

  The two elements of the Palo Alto Networks platform architecture that enable security orchestration in a software-defined network (SDN) are: Full set of APIs enabling programmatic control of policy and configuration Dynamic Address Groups to adapt Security policies dynamically The Palo Alto Networks platform architecture consists of four key elements: natively integrated security technologies, full set of APIs, cloud-delivered services, and centralized management. The full set of APIs enables programmatic control of policy and configuration across the platform, allowing for automation and integration with SDN controllers and orchestration tools. Dynamic Address Groups are objects that represent groups of IP addresses based on criteria such as tags, regions, interfaces, or user-defined attributes. Dynamic Address Groups allow Security policies to adapt dynamically to changes in the network topology or workload characteristics without requiring manual updates. VXLAN support for network-layer abstraction and NVGRE support for advanced VLAN integration are not elements of the Palo Alto Networks platform architecture, but they are features that support SDN deployments. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [Palo Alto Networks Platform Architecture], [API Overview], [Dynamic Address Groups Overview]

• Question 20:

  Auto scaling templates for which type of firewall enable deployment of a single auto scaling group (ASG) of VM-Series firewalls to secure inbound traffic from the internet to Amazon Web Services (AWS) application workloads?

  A. HA-Series
  B. CN-Series
  C. IPA-Series
  D. VM-Series
  D. VM-Series

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  Explanation/Reference:

  Auto scaling templates for VM-Series firewalls enable deployment of a single auto scaling group (ASG) of VM-Series firewalls to secure inbound traffic from the internet to Amazon Web Services (AWS) application workloads. An ASG is a collection of EC2 instances that share similar characteristics and can be scaled up or down automatically based on demand or predefined conditions. Auto scaling templates for VM-Series firewalls are preconfigured templates that provide the necessary resources and configuration to deploy and manage VM-Series firewalls in an ASG on AWS. Auto scaling templates for VM-Series firewalls can be used to secure inbound traffic from the internet to AWS application workloads by placing the ASG of VM-Series firewalls behind an AWS Application Load Balancer (ALB) or a Gateway Load Balancer (GWLB) that distributes the traffic across the firewalls. The firewalls can then inspect and enforce security policies on the inbound traffic before sending it to the application workloads. Auto scaling templates for HA-Series, CN-Series, and IPA-Series firewalls do not enable deployment of a single ASG of VM-Series firewalls to secure inbound traffic from the internet to AWS application workloads, as those are different types of firewalls that have different deployment models and use cases. References: Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [Auto Scaling the VM-Series Firewall on AWS], [VM-Series Datasheet], [HA- Series Datasheet], [CN-Series Datasheet], [IPA-Series Datasheet]