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HP Creating HP Software-defined Networks Sample Questions:

1. Refer to the exhibit.

The switches in the diagram are connected to each other using two physical cables. The network consists of two HP 3800 series switches and two HP 5900 series switches. Why is only one link displayed between switches in the OpenFlow Topology diagram on the HP VAN SDN Controller?

A) The SPF algorithm used by the HP VAN SDN Controller only supports a single link between switches and blocks other links to stop loops. The HP VAN SDN Controller only displays the single active link between the switches
B) Spanning tree is blocking one of the ports. The HP VAN SDN Controller. Only displays the active link in the OpenFlow Topology diagram.
C) Link aggregation is being used OpenFlow only displays information about the logical interface and not the physical interfaces. The HP VAN SDN Controller only displays a single link between switches
D) Link aggregation is being used. One of the Interfaces in the bundle is down, and OpenFlow has updated the HP VAN SDN Controller with this information The HP VAN SDN Controller only displays the active link in the OpenFlow Topology diagram

2. Which northbound API for external applications do developers use to communicate with the HP VAN SDN Controller?

A) JSON
B) HTTPS
C) NETCONF
D) REST

3. Which command is a valid cURL command that can be executed against the HP VAN SDN Controller (assuming variables and scripts are configured correctly)?

A) Option D
B) Option B
C) Option C
D) Option A

4. A single HP VAN SDN Controller is used to control OpenFlow enabled switches that operate in virtualization mode. An internal application is installed on the controller that redirects classified traffic to a specific VLAN. The connection between the controller and the network is lost. The HP OpenFlow enabled switches' connection interruption mode is set to standalone mode.
What is the forwarding behavior of the OpenFlow enabled switches?

A) Based on the timeout values, the flow entries are removed from the flow tables, and all traffic is discarded on the switches.
B) All flow entries are set not to age out, and the classified traffic is still redirected.
C) Based on the timeout values, the flow entries age out, and only OpenFlow traffic is discarded
D) All flow entries are removed, and traffic is forwarded using normal switch processing.

5. An administrator wants the switches to forward traffic in the legacy mode. If all the controllers fail, which action should the administrator take?

A) Configure the instance to fail in standalone mode.
B) Install a packetin rule as the lowest priority rule in the flow table.
C) Install a packet_out rule as the lowest priority rule in the flow table.
D) Configure the instance to fail in interruption mode.

Solutions: