HP-Creating HPE Software-defined Networks Set 1

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HP-Creating HPE Software-defined Networks Set 1

A company is using Microsoft soft phones and Microsoft Lync. The company wants to implement the HP Network Optimizer SDN application to improve the performance of this solution. Which settings are required on the company's core switch?

OpenFlow hybrid mode ✘ QoS settings to trust DSCP settings set at the access layer ✘ ACLs to select Lync traffic and apply appropriate QoS settings ✘ OpenFlow 1.3 group table ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A network is configured to prioritize traffic based on port number. The company wants to implement Microsoft Lync. Which advantage does the HP Network Optimizer SDN Application provide over prioritizing traffic based on port number?

detects rogue clients that are prioritizing non-UC traffic ✘ decreases management overhead ✘ ensures Lync traffic is prioritized over the Internet ✘ eliminates the need to implement QoS at the core ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A company has implemented a BYOD solution and Microsoft Lync. Users report that there are network performance issues. The network administrator is investigating traffic using traces, and has noticed a very large portion of the traffic doing to UDP port 53. Which HP SDN application can help to solve the problem?

HP Optimizer SDN Application ✘ HP Network Protector SDN Application ✘ HP Converged Control SDN Application ✘ HP Visualizer SDN Application ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A company has multiple HP VAN SDN Controllers with one of these applications oneach controller: HP Network Visualizer SDN Application HP Network Protector SDN Application HP Network Optimizer SDN Application When a user attempts to browse to a web site, the browser displays a message indicating that the site is unavailable. The user reports this to the IT staff. Assume that one of the SDN applications is causing this behavior. Where should the network administrator look for the explanation?

HP Network Protector blacklists and TippingPoint database ✘ HP Network Visualizer capture destinations ✘ HP Network Optimizer edge marking policies ✘ HP Network Visualizer capture sessions ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

An organization is deploying an HP SDN solution in its legacy network. The network includes OpenFlow-enabled devices and legacy devices that do not support OpenFlow. How does the HP VAN SDN Controller discover multi-hop links that cross non-OpenFlow enabled switches?

The controller uses ARP to discover all devices on the network and then uses OpenFlow to determine whether each device is OpenFlow-enabled. ✘ The controller broadcasts LLDP packets to discover whether connected switches are OpenFlow-enabled and uses this information to create an OpenFlow topology. ✘ The controller instructs OpenFlow-enabled switches to broadcast BDDP packets that pass through legacy switches to OpenFlow-enabled switches, which send to the controller. ✘ The controller broadcasts BDDP packets that pass through legacy switches to OpenFlow-enabled switches, which send to the controller. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A switch is configured to supportOpenFlow 1.0 and 1.1. What happens when the switch sends an OpenFlow hello message to a standalone HP VAN SDN Controller 2.5?

The controller responds with an error message because the controller does not support OpenFlow 1.1. ✘ The controller and switch will use OpenFlow 1.0. ✘ The controller requires all switches in the same VLAN to use OpenFlow 1.1. ✘ The controller uses OpenFlow 1.3, which is backwards compatible. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A switch is running software that supportsOpenFlow 1.0. What is one reason the network administrator would want to upgrade the switch software to a version that supports OpenFlow 1.3?

to support IPv4 DSCP matching ✘ to provide interoperability with traditional networking technologies ✘ to enable OpenFlow-only operation ✘ to support multiple OpenFlow tables ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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?

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

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A network environment consists of multiple switches. Some of the switches are configured for OpenFlow 1.0, and some of the switches are configured for OpenFlow 1.3. These switches are configured to communicate with an HP VAN SDN Controller team. What is the result of the negotiation?

All switches negotiate to use OpenFlow 1.0 as the highest common version. ✘ All OpenFlow switches successfully negotiate to use OpenFlow 1.3 with the controller, and OpenFlow 1.0 switches ignore OpenFlow 1.3 extensions. ✘ OpenFlow 1.3 switches negotiate to use OpenFlow 1.3, and OpenFlow 1.0 switches negotiate to use OpenFlow 1.0. ✘ OpenFlow 1.3 switches successfully negotiate to use OpenFlow 1.3 with the controller, and the OpenFlow 1.0 switches fail to connect. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

A company with a small IT staff needs to be able to deploy applications quickly. How can software-defined networking (SDN) help this company?

by allowing IT to deploy policies for both traditional and OpenFlow-enabled switches from a centralized-controller ✘ by providing a programmable network that simplifies network provisioning ✘ by providing a common set of APIs for all network switches that support open standard protocolsD. by eliminating the need to upgrade switch software to support new applications ✘

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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