HP2-Z31 Online Practice Questions and Answers

Correct Answer: D

Openflow 1.3.1: Support for multiple flow tables is introduced Reference: Open Flow 1.3.1 Support: Controller View https://wiki.opendaylight.org/images/d/dc/Openflow1.3_Support_for_Opendaylight.pdf

Correct Answer: D

The first capability that's implemented is the ability of the Lync server (or any communications server, potentially) to dynamically provide to the network controller the IP addresses/ports of the paired endpoints of a real time flow. This enables the network to mark, without deep packet inspection, those flows with a CoS/QoS tag that will give them the proper treatment in the network. This becomes a positive identification of "authorized" real-time flows; any device/flow trying to use that tagging that is not "authorized" through the API can automatically be re-tagged to a best effort service class.

This technique has a number of critical advantages over current techniques. When compared to the typical VLAN, it enables positive tagging of a variety of devices, including BYOD and potentially other systems that might have multiple traffic types (e.g., a PC running a soft client or a tablet).

In addition, when compared to deep packet inspection at each access element, it reduces cost as well as eliminating the errors and complexity that encryption of the packet stream can introduce.

Reference: HP and Microsoft Demo OpenFlow-Lync Applications-optimized Network

Correct Answer: B

OpenFlow instance connection interruption mode

You can set the type of behavior when the switch loses connection with the controller.

fail-standalone

If the switch loses connection with all of the controllers, packets and messages of new flows behave as a

legacy switch or router would. Existing flows of this OpenFlow instance are removed.

Reference: HP OpenFlow Switches

Correct Answer: A

Note:

idle_timeout - Number of idle seconds before the flow entry is removed. Defaults to no idle timeout.

priority - When using non-exact (wildcarded) matches, this specifies the priority for overlapping matches.

Higher values are higher priority. Not important for exact or non-overlapping entries.

actions - A list of actions to apply

. output: if no group action is specified, forward the packet on the port specified by the output action

Correct Answer: B

Install the HP VAN SDN Controller from the directory in which it is stored: ~$ sudo dpkg i hp-sdn-ctl_version_amd64.deb · Replace version with a value for release version 2.0.1.4254 or greater, as shown in Example. Example: Installing the controller software ~$ sudo dpkg -i hp-sdn-ctl_2.0.1.4254_amd64.deb

Reference: HP VAN SDN Controller Installation Guide

Correct Answer: A

Device Status, Health status: Yellow

*

The status of one or more VLANs configured on the switch is not green

*

One of the VLANs configured on the switch has been disabled from DNS inspection

Reference: HP Network Protector SDN Application Administrator Guide

Correct Answer: C

The minimum number of team members for an HP VAN SDN Controller team is three.

Reference: HP VAN SDN Controller Installation Guide

Correct Answer: D

Setting policies to quarantine hosts

The application quarantines a host if the host satisfies the quarantine criteria set in the general threshold

policy. You can set policies to direct the host to a safe site and access limited resources on the network.

To set the general policies, complete the following steps.

1.

Select Policies Policy Enforcement Settings. The Policies/Policy Enforcement Settings page appears.

2.

Click the icon to edit the policy enforcement settings.

3.

Select Non-existent Domain option to display a message that the domain does not exist.

4.

Enter time in seconds in the TTL(sec) text box to cache the response.

5.

Select Redirection Server option to redirect the host to a known safe site.

6.

Enter the domain name or IP address of the known safe site in the DNS Redirection Server Address text box.

7.

Click icon to add the domain name or IP address of the resources that the host can access when it is quarantined.

8.

Click icon to save the setting.

Reference: HP Network Protector SDN Application Administrator Guide

Correct Answer: D

IMC uses a REST interface to manage the HP VAN SDN Controller Reference: Technical white paper, Mock RFI for Enterprise SDN Solutions http://h20195.www2.hp.com/V2/getpdf.aspx/4AA5-1162ENW.pdf (page 5)

Correct Answer: A

LLDP is used to discover direct links between switches and BDDP is used to discover the switches in the same broadcast domain.

Note: Using a link-discovery module, the controller generates both LLDP and broadcast packets (referred to as BDDPs) and sends them to all neighboring switches on a regular basis.

Reference: OpenFlow Controller