HP2-Z31 Online Practice Questions and Answers

Correct Answer: A

The Openflow controller component relies on PKI to establish mutual trust (2-way SSL) between itself and the Openflow switches that it manages.

Please note that both the Controller and Device certificates must be signed by the same CA, so that the TLS connection will be established.

Reference: HP VAN SDN Controller Administrator Guide

Correct Answer: DE

The following licenses are available for the HP VAN SDN Controller:

* (D) Base controller license (HP VAN SDN Ctrl Base SW w/ 50node E-LTU)--Enables the HP VAN SDN Controller to communicate with up to 50 OpenFlow switches. This license is a prerequisite for the other licenses, and must be installed for you to receive technical support during your first 90 days of use. *(E) Base controller plus 50 "Add Nodes" license (HP VAN SDN Ctrl 50node E-LTU)-- Extends by 50 the number of switches the base controller can communicate with using OpenFlow. In addition, you can install the Add Nodes license multiple times. For example: If you install one Add Nodes license on an HP VAN SDN Controller with a base license present, the total number of OpenFlow switches supported is 100. If you install three Add Nodes licenses on an HP VAN SDN controller with a base license, the total number of OpenFlow switches supported is 200. Etc.

Reference: HP VAN SDN Controller License Registration and Activation Guide

Correct Answer: C

* Northbound API Relative to figure 1 below, the Northbound API is the API that enables communications between the control layer and the application layer (external business applications.

Southbound API

Relative to Figure 1 below, the Southbound API is the API that enables communications between the control layer and the infrastructure layer (OpenFlow).

Figure 1. ONF's SDN architecture

* Putting the region configurations in place in a controller team ensures seamless failover and failback among the configured controllers for the specified network devices in a region. That is, when a master controller experiences a fault, the Role Orchestration Service ensures that a slave controller immediately assumes the master role over the group of network devices to which the failed controller was in the master role.

Reference: Technical white paper, Mock RFI for Enterprise SDN Solutions Reference: HP VAN SDN Controller Administrator Guide

Correct Answer: D

OSGi was thus selected to allow elasticity of applications. The applications can be dynamically introduced and dynamically removed from a running environment without having to shut down the whole controller and then restart it. Using a network analogy again, the applications are "hot- swappable".

Reference: HP Virtual Application Networks SDN Controller Technical Solution Guide http://www8.hp.com/ h20195/v2/GetPDF.aspx%2Fc04219919.pdf (page 11 and 12)

Correct Answer: B

About VLAN group policies Policies are a collection of filters or rules that provide a method for setting up security configuration options for VLAN groups. You can create customized policies for each VLAN group based on the requirements and the threat type for each group.

You can customize the policies for the groups by setting the reputation scores. You can set up policies for each group to protect your network from the following threat types: Botnet, Malware, etc

Reference: HP Network Protector SDN Application Administrator Guide

Correct Answer: BE

OpenFlow flow entry timers include the idle timeout, the hard timeout, and the purge flow timer.

Reference: Understanding OpenFlow Flow Entry Timers on Devices Running Junos OS http:// www.juniper.net/techpubs/en_US/junos13.3/topics/concept/junos-sdn-openflow-flow- entry-timersoverview.html

Correct Answer: A

Virtualization mode With Virtualization Mode, some VLANs can be designated as members of OpenFlow instances. Each OpenFlow instance is independent and has its own OpenFlow configuratio

Note: OpenFlow can be configured for Virtualization Mode or Aggregation Mode.

*

Virtualization Mode Each OpenFlow instance is independent and has its own OpenFlow configuration and OpenFlow controller connection. Some VLANs are designated as members of OpenFlow instances while other VLANs are not. The VLANs that are not members of OpenFlow instances could be thought of as VLANs carrying production traffic.

*

Aggregation Mode Provides a single OpenFlow instance that includes all of the VLANs configured on the switch except the VLAN(s) that connect to the controller(s) and the Management VLAN on the switch. Production traffic is not allowed

Reference: HP OpenFlow Switches Administrator's Guide

Correct Answer: A

Flow Management:

*

Delivers History Flow Entry records flow entry used before to help administrators audit flow policy change

*

Displays the list of all current Flow entry in OF network, including Match Field, Instruction and other statistics.

*

Shows detailed flow service information and flow traffic and trend in flow entry detail page

*

Provides shortcut to locate flow to topology show device and link status

Reference: HP IMC Virtual Application Networks Software-defined Networking Manager Software

Correct Answer: C

Unified Communications and Collaboration (UCandC) SDN Application--This application aims to improve the user experience of products such as Microsoft Lync within campus networks. It automates the deployment of quality-of-service policies and dynamically adjusts network priorities to securely support voice, video, and collaboration traffic, even in an environment integrating soft phones and BYOD user endpoints.

Reference: HP Virtual Application Networks SDN Controller

Correct Answer: A

For example, the audit log displays software license and teaming activity: Reference: HP VAN SDN Controller Administrator Guide