HP HP Certifications HP0-Y47 Questions & Answers

• Question 21:

  A company wants to enforce source-specific multicasting (SSM) for several multicast streams.

  This is the configuration:

  Some multicast receivers support IGMPv3.

  Other receivers that need to stream support IGMPv2 only.

  The multicast receivers' default routers enable IGMPv3 on the interfaces associated with their subnets. The routers are correctly configured to enable the IGMPv3 receivers to receive the stream from the correct source

  Which setting do the receivers' routers require to support the IGMPV2 devices?

  A. An SSM policy that selects the IGMPv2 devices and binds them to an RP address

  B. An SSM map that sets a rendezvous point (RP) for each multicast address

  C. An SSM policy that selects the appropriate multicast destinations and binds them to an RP address

  D. An SSM map that sets the correct source for each multicast address

  Correct Answer: D

  http://h20565.www2.hp.com/hpsc/doc/public/display?sp4ts.oid=6796027anddocId=emr_na- c04412136anddocLocale=en_US IGMP SSM mapping The IGMP SSM mapping feature provides SSM support for receiver hosts that are running IGMPv1 or IGMPv2. This feature is implemented by configuring static IGMP SSM mappings on the IGMP-enabled routers. The SSM model assumes that the IGMP-enabled routers have identified the desired multicast sources when receivers join multicast groups. ?A host running IGMPv3 can explicitly specify multicast source addresses in its reports. ?A host running IGMPv1 or IGMPv2, however, cannot specify multicast source addresses in its reports. In this case, you must configure the IGMP SSM mapping feature to translate the (*, G) information in the IGMPv1 or IGMPv2 reports into (G, INCLUDE, (S1, S2...)) information

  http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nxos/multicast/configuration/guide/b_multicast/b_multicast_chapter_011.html#task_E5D313413C374821B9964D5B0 E3590D8

• Question 22:

  The network administrator is configuring Unidirectional Link Detection (UDLD) on trk1 on an HP Provision witch. The trk1 link aggregation group has these settings:

  Interfaces = 48 and 49 Untagged VUAN = 1 Tagged VLANs = 2-4

  How should the administrator complete the setup?

  A. Enable link-keepalive on both interfaces in the trunk (48 and 49).

  B. Enable link-keepalive on interface 48, specifying the VLAN as 1.

  C. On both interfaces in the trunk (48 and 49), enable link-keepalive, specifying the VLAN as 1.

  D. Enable link-keepalive on trk1

  Correct Answer: C

  ftp://ftp.hp.com/pub/networking/software/2900yl-MCG-0207-T_12_XX-Chap10-PrtStat-BasicCfg.pdf

• Question 23:

  Refer to the exhibit.

  

  The five routers shown in the exhibit are successfully implementing OSPF on the interface shown in the exhibit. The exhibit also shows settings for OSPF areas and interface costs. A network administrator enters these commands on Router 4 and Router 5:

  

  Which statement correctly describes the OSPF routing table on Router 2?

  A. It has one next hop for 172.16.0.0/16, 10.0.0.6

  B. It has one next hop for 172.16.0.0/16, 10.0.0.2

  C. It has not learned a route to 172.16.0.0/16

  D. It has one next hop for 172.16.0.0/16, 10.0.0.6, and 10.0.0.2

  Correct Answer: B

• Question 24:

  A network administrator is configuring several HP Comware switches as an HP Intelligent Resilient Framework (IRF) virtual device. According to best practices at, which point during the IRF configuration process should the administrator activate the IRF ports?

  A. After enabling the physical interfaces that are assigned to IRF ports and saving the settings

  B. After configuring IRF ports but before assigning physical interfaces to them

  C. After enabling the physical interfaces that are assigned to IRF ports but before saving the settings

  D. Before configuring IRF ports or assigning physical interfaces to them

  Correct Answer: A

  Use the irf-port-configuration active command to activate configurations on all IRF ports on the device. When you physically connect members of an IRF virtual device and bind physical IRF port(s) to an IRF port whose link state is DIS or

  DOWN, which you can display with the display irf topology command, execution of this command is required to establish the IRF virtual device.

  Note that activating IRF port configurations may cause merge of IRF virtual devices and automatic device reboot. Therefore, to avoid configuration loss you are recommended to set the member ID for the device in the following way:

  1) Plan the network and member IDs in advance. Determine the number of IRF ports to be created, and which physical IRF ports is used for IRF virtual device establishment.

  2) Change member IDs. (Member ID change takes effective after device reboot, so change member IDs before executing the irf-port- configuration active command.)

  3) Connect SFP+ cables or fibers and make sure that the physical IRF ports are well connected.

  4) Create IRF ports.

  5) Bind physical IRF ports to IRF ports.

  6) Save the current configurations to the configuration file to be used at the next startup.

  7) Activate configurations on all IRF ports.

  When the system starts up, if you bind a physical IRF port to an IRF port through the configuration file, or add a new physical port, configurations on IRF ports are automatically activated without the need to execute this command again.

• Question 25:

  Refer to the exhibits. Exhibit1

  

  Exhibit 2

  

  Exhibit 1 shows the SNMP template that HP Intelligent Management Center (IMC) will use when discovering an HP Provision switch. Exhibit 2 settings on the switch. IMC should have rights to read and write any parameter on the switch.

  Which task must the network administrator complete to accomplish this?

  A. Create an MIB view and assign it to the "imc" user

  B. Enable the ver3 security model for the "CommunityManagerReadWrite" user

  C. Adding the "imc" user to the ManagerPriv group

  D. Change the "imc" user to ver2c mode

  Correct Answer: C

  http://www.networktasks.co.uk/environments/hp/provision/snmpv3-and-imc want to now create a more secure user, with SHA and AES-128

  snmpv3 user imc auth sha mysecurepassword priv aes myprivpassword Add the user to the managerpriv group

  snmpv3 group managerpriv user imc sec-model ver3

• Question 26:

  A company has configured two switches as an HP Intelligent Resilient Framework (IRF) virtual device. The IRF port on each switch is bound to multiple physical links. How does the switch select the link for transmitting packets on that IRF port?

  A. It uses a round-robin mechanism in which it sends each packet over a different link in turn.

  B. It uses a weighted round-robin mechanism, in which it sends each packet over a different link in turn, but can send more packets over certain links over higher weighted.

  C. It uses one of the links as an active link, the other links are in standby mode and can become active if the active link fails

  D. It uses a hash of various Layer 2, 3, or 4 information in the packet, depending on the type of traffic, the switch model, and the IRF load-sharing.

  Correct Answer: C

• Question 27:

  A company plans to use Intelligent Management Center CMC) Network Traffic Analyzer (NTA) to monitor network utilization. How do HP switches with the solution?

  A. Provision switches use the NTA server as their sFlow collector. Comware switches use the NTA server as their NetStream server.

  B. Provision switches use the NTA server as their sFlow collector. NetStream server, or both Comware switches use the NTA server as their sFlow collector NetStream server, or both.

  C. ProVision switches use the NTA server as their sFlow collector. Comware switches as their sFlow collector, NetStream server, or both.

  D. ProVision switches use the NTA server as their sFlow collector, NetStream server, or both. Comware switches use the NTA server as their sFlow collector

  Correct Answer: C

  HP Intelligent Management Center Network Traffic Analyzer Software Product overview HP IMC Network Traffic Analyzer (NTA) Software Module is a graphical network-monitoring tool that provides network administrators with real-time information about users and applications consuming network bandwidth. A reliable solution for enterprise and campus network traffic analysis, it defends the network against virus attacks and applies varying levels of bandwidth traffic to different services and applications. The IMC NTA software module's network bandwidth statistics help plan, monitor, enhance, and troubleshoot networks, as well as identify bottlenecks and apply corrective measures for enhanced throughput. The software also monitors Internet egress traffic, helping administrators to analyze the bandwidth usage of specific applications and monitor the impact of non-business applications (e.g., network games) on user productivity. Granular, network-wide surveillance of complex, multilayer switched and routed environments helps rapidly identify and resolve network threats.

  Real-time monitoring of database space

  Automatic generation of four types of reports

  Uses instruments embedded in switches/routers

  Support for sFlow, NetFlow, and NetStream

  Granular insight of applications, users, and ports

  NetStream module -- Provides traffic analysis and statistics capture to allow network administrators to rapidly identify network anomalies and security threats as well as obtain capacity planning information; and supports NetFlow v5 and v9 (JD254A Comware v5 only)

• Question 28:

  Refer to the exhibit. Exhibit 1

  

  Exhibit 2

  

  Exhibit 1 shows a simplified network topology. All infrastructure devices shown in the exhibit are successfully implementing (OSPF) on the interfaces. The exhibit also shows settings for OSPF areas. Exhibit 2 shows additional settings on IRF. The master within IRF 1 fails. Connectivity is disrupted for about one minute.

  What can the network administrator do to prevent this issue occurring again?

  A. Set up OSPF Bidirectional Forwarding Detection (BFD) on the routed link aggregation groups between the IRF virtual switches

  B. Enable extended Link Access Control Detection Data Units (LACPDUs) on IRF 1 and IRF 4

  C. On IRF 1, set up Bidirectional Forwarding Detection (BFD) Multi-Access Detection (MAD) with a dedicated link.

  D. On each of the IRF virtual switches, enable opaque LSAs and set the OSPF graceful restart mode to IETF mode.

  Correct Answer: D

• Question 29:

  Refer to the exhibit.

  

  The five routers shown in the exhibit are successfully implementing OSPF on the interface shown in the exhibit. The exhibit also shows settings for OSPF areas and interface costs. A network administrator enters these commands on Router 4 and Router 5:

  

  How can the administrator ensures that Router 2 learns the route to 172.16.0.0/16 with next hop 10.0.0.6?

  A. On Router 2, enables OSPF ECMP globally

  B. On Router 4 and 5, change the metric type for redistributed static routes to type 1

  C. On Router 4, change the cost for redistributed static routes to 2

  D. On Router 2, 3, 4 and 5, change the bandwidth reference value to 100

  Correct Answer: B

• Question 30:

  An HP Provision switch port is implementing MAC Authentication (MAC-Auth) to a RADIUS server. A device connects to the port, and the switch submits a RADIUS Access-Request to the server. What correctly describes how the switch determines the username and password for the request?

  A. Depending on the configuration, the switch sends the device MAC address for the username or a configured username. It sends the device MAC address for the password or a configured password

  B. The switch always sends the device MAC address as the username. It always sends "provision" for the password, and this password cannot be reconfigured.

  C. The switch always sends the device MAC address as the username. Depending on the configuration, the password is the device MAC address or a configured password.

  D. The switch always sends the device MAC address as the username and the password, and this behavior cannot be reconfigured.

  Correct Answer: D