HP HP ASE - FlexNetwork Architect V2, HP ASE - FlexNetwork Integrator V1 HP2-Z31 Questions & Answers

• Question 71:

  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. What is the result of the negotiation?

  A. All OpenFlow switches successfully negotiate to use OpenFlow 1.3 with the controller, and OpenFlow

  1.0 switches ignore OpenFlow 1.3 extensions.

  B. OpenFlow 1.3 switches successfully negotiate to use OpenFlow 1.3 with the controller, and the OpenFlow 1.0 switches fail to connect

  C. All switches negotiate to use OpenFlow 1.0 as the highest common version.

  D. OpenFlow 1.3 switches negotiate to use OpenFlow 1.3, and OpenFlow 1.0 switches negotiate to use OpenFlow 1.0.

  Correct Answer: D

  The controller:

  Supports multiple OpenFlow versions at the same time.

  Negotiates with each OpenFlow switch for the highest common

  OpenFlow version between the switch and controller.

  Reference: HP VAN SDN Controller and Applications Support Matrix, Supported OpenFlow versions

• Question 72:

  A switch connects to the HP VAN SDN Controller, which has the HP Network Protector SDN Application installed. These are the switch details:

  Switch: 3800-24G-2XG Firmware: KA15.14.003

  OpenFlow negotiated: 1.3

  Which channel will be used for communication with the HP Network Protector application?

  A. OpenFlow Channel

  B. Normal Forwarding

  C. Service Insertion Tunnel

  D. GRE Tunnel

  Correct Answer: A

  The application uses the switch firmware information to decide if the communication with the switch is through OpenFlow channel or through the application Insertion tunnel. For firmware versions K.15.14 and lower, the application communicates with the switch through OpenFlow channel. For firmware versions KA.15.15.0015 and greater, the application can communicate with the switch either through OpenFlow channel or Service Insertion tunnels.

  Reference: HP Network Protector SDN Application Administrator Guide

• Question 73:

  Which HP IMC SDN Manager functionality provides a logical overview of the OpenFlow network?

  A. SDN Manager reports

  B. SDN Manager dashboard

  C. SDN Manager flow entry management

  D. SDN Manager OpenFlow topology

  Correct Answer: B

  HP IMC Dashboard figure:

  

  My Network view (within SDN Manager Dashboard):

  

  Reference: Review: HP Intelligent Management Center (IMC)

• Question 74:

  Which environmental component is used to handle authentication requests to the HP VAN SDN Controller?

  A. Zookeeper

  B. Cassandra

  C. Neutron

  D. Keystone

  Correct Answer: D

  The SDN controller uses Openstack Keystone as an identity management for managing users, generating tokens, as well as token validation.

  Reference: HP VAN SDN Controller Administrator Guide

• Question 75:

  What are two challenges when planning to implement a BYOD environment? (Select two.)

  A. device state unknown

  B. device software inspection

  C. device not under central control

  D. device CA enrollment

  E. device inventory control

  Correct Answer: BD

  * HP identifies the following main BYOD security challenges:

  (B)

  Protecting the network from malware

  (D)

  Providing secure access to the network

  Scaling the network to meet demand

  Ensuring an optimized Wi-Fi experience

  * The top BYOD security concerns for enterprise companies are:

  +

  loss of company or client data (picked by 67%)

  +

  (D) unauthorized access to company data or systems (57%) + (B) users downloading app or content with embedded security exploits (47%) + (B) malware infections (45%)

  +

  and lost or stolen devices (41%)

  Reference: Bring your own device (BYOD), FAQs http://h17007.www1.hp.com/docs/byod/faq_4AA4-5466ENW.pdf

• Question 76:

  Which OpenFlow message ensures that all previous flow mod messages have been processed by the OpenFlow switch agent and that there are no flow mod messages queued for processing from an earlier time?

  A. Flush

  B. Push

  C. Barrier

  D. Force

  Correct Answer: A

  flush()

  Pushes buffered data out the Stream; this is NOT guranteed to flush all data, multiple flush() calls may be

  required, until needFlush() returns false.

  Reference: org.openflow.io, Interface OFMessageOutStream

• Question 77:

  What is a key feature of cloud computing?

  A. server virtualization

  B. network management virtualization

  C. user self-provisioning

  D. software-defined networking

  Correct Answer: A

  Explanation: Virtualization is a foundational element of cloud computing and helps deliver on the value of cloud computing. Cloud computing is the delivery of shared computing resources, software or data -- as a service and on-demand through the Internet Reference: Virtualization vs. Cloud Computing: What's the Difference? http://www.businessnewsdaily.com/5791-virtualization-vs-cloud-computing.html

• Question 78:

  An administrator wants to navigate to the HP VAN SDN Controller graphical user interface to view options such as the OpenFlow Topology, Alerts, and installed applications. Which URL is correct for release 2.0 of the HP VAN SDN Controller configured with IP address 192.168.56.7?

  A. https://192.168.56.7:8443/api

  B. https://192.168.56.7:8080/sdn/ui

  C. https://192.168.56.7:8443/sdn/ui

  D. http://192.168.56.7:8443/sdn/ui

  Correct Answer: C

  Start the SDN Graphical User Interface

  1.

  Use the Google Chrome browser to access the controller's GUI at the controller IP address:

  https://:8443/sdn/ui

  For example:

  https://127.0.0.1:8443/sdn/ui

  2.

  Enter user name and password credentials, then click Login.

  The default user name is "sdn".

  The default password is "skyline".

  The main controller GUI screen then appears:

  

  Reference: HP VAN SDN Controller Administrator Guide

• Question 79:

  Which technology can be used in OpenFlow 1.3 that allows rate limiting of packets that are sent to the SDN Controller?

  A. Slicing

  B. sFlow support

  C. Meter on IP ToS/DSCP bits

  D. Meter table

  Correct Answer: D

  Per-flow meters OpenFlow 1.3 brings support for per-flow meters. These can be attached to flow entries and can measure and control the rate of packets. One of the main applications of perflow meters is to rate limit packets sent to the controller.

  Reference: Production-ready SDN with OpenFlow 1.3

  http://h17007.www1.hp.com/docs/interop/2013/37958_HPN_SDN_Openflow_Brief_042913_lo.pdf (page 2)

• Question 80:

  What is used by the HP VAN SDN Controllers for internal communication between controllers?

  A. REST API Token

  B. Admin ToKen

  C. Auth ToKen

  D. Service Token

  Correct Answer: D

  The Service token is used for internal communication between controllers and is not exposed to the user.

  Reference: HP VAN SDN Controller Administrator Guide, Service and Admin Tokens