An HP Virtual Cloud Networking (VCN) SDN Application runs on an HP VAN SDN Controller. How does VCN help to provision networking for virtualized services in a cloud solution?

• A. By using northbound RESTful APIs to receive information from servers and switches acting as Network Functions Virtualization (NFV)-complaint routers
• B. By using southbound OpenStack Layer 2 Agent APIs to set up the correct VLANs on virtual switches, as well as tunnels between virtual switches
• C. By using southbound RADIUS APIs to provision dynamic VLANs on data center switches, basing those VLANs on the customer identity
• D. By using northbound Java APIs to integrate with and configure Ethernet Virtual Bridging (EVB) applications

Table of Acronyms

Refer to the exhibit.

The switches shown in the exhibit form a TRILL region. What helps to load balance traffic across
the .inks between these switches?

• A. The TRILL cost for each link is the same, and TRILL Equal Cost Multi-Path (ECMP) is enabled.
• B. Switch 4 and Switch 5 are assigned the same Designated RBridge (DRB) priority.
• C. The switch-to-switch links are configured to permit at least two VLANs.
• D. VLANs 10, 20, and 30 are mapped to different spanning tree instances.

A company has three HP VAN SDN Controllers, which will be deployed in a team. The administrator is deciding whether to create one region or three regions. What is a benefit of creating three regions rather than one region?

• A. The team can load balance the Master OpenFlow controller role, increasing the total number of packetin messages per second that the solution can handle.
• B. The team can load balance the team leader role, increasing the total number of RESTful API and Java API calls that the solution can handle.
• C. The team can provide high availability for all the OpenFlow controller functions rather than only for the SDN application functions.
• D. The team can provide high availability for SDN application functions rather than only for the OpenFlow controller functions rather than only for the OpenFlow controller functions.

An administrator plans to deploy a wireless network, which might need to support a mix of 802.11g and 802.11n clients in the 2.4 GHz frequency. The administrator wants to prioritize transmissions for 802.11 n clients. Which 2.4 GHz radio setting helps to prevent slow clients from taking more than their share of transmission time?

• A. Set the mandatory data rate for 802.11g as low as possible.
• B. Set up the fair scheduling option.
• C. Set up the channel reuse option.
• D. Set the multicast data rate for 802.11n as low as possible.

A company has an external SDN application that works with an HP VAN SDN Controller. The application programmer has tried testing several RESTful API calls but receives authentication errors. What does the administrator need to explain to the programmer?

• A. Every RESTful API call must include an X-Auth token. The token must be created by a valid certification authority (CA) and installed on both the controller and external application in advance.
• B. Every RESTful API call must include an X-Auth token. The token can be obtained by sending a calf with valid credentials https.Controller_IP.8443/sdn/v2.0/auth
• C. The application must be installed with a certificate that is signed by the same certification authority (CA) that signed the VAN SDN Controller certificate.
• D. Every RESTful API call must include a valid username and password. The only exception is when the AuthRequired parameter is set to false in restful conf file.