HP0-Y51 Online Practice Questions and Answers

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 up the channel reuse option.

B. Set up the fair scheduling option.

C. Set the mandatory data rate for 802.11g as low as possible.

D. Set the multicast data rate for 802.11n as low as possible.

Refer to the exhibit.

The switches shown in the exhibit use the HP VAN SDN Controller as the OpenFlow controller. They connect to the controller on their out-of-band management (OOBM) ports, but these connections are not shown in the exhibit. The switches also run spanning tree protocol. An SDN application installed on the HP VAN SDN Controller is programmed to discover live ports, find redundant paths, and create loopfree paths for traffic infrastructure shown in the exhibit. However the application is not able to complete these functions because the switches are reporting some ports as blocked.

What should the administrator do to let the application create the loopfree paths?

A. Disable spanning tree on the OpenFlow-enabled switches and do not configure link aggregation.

B. Enable spanning tree on the OpenFlow-enabled switches but set the application as the spanning tree flood parameter controller.

C. Enable spanning tree on the OpenFlow-enabled switches and configure all of the redundant links as egress-only-ports

D. Disable spanning tree on the OpenFlow-enabled switches and configure the redundant links as static link aggregations

A company has HP MultiService Mobility (MSM) APs that receive DHCP addresses on several different subnets. The APs are controlled by an MSM Controller. The company is considering replacing the MSM Controller with a Unified Wired-Wireless controller. The administrator runs a proof of concept test in which some of these APs are discovered and controlled by the Unified Wired-Wireless controller. Now the administrator wants to return the APs to being controlled by the MSM Controller.

The network administrator performs these actions:

Ensures that the Colubris vendor-specific option in each AP subnet DHCP scope references the MSM Controller IP address

Reboots the APs.

The MSM Controller never succeeds in discovering the APs. A debug reveals that the APs are not contacting the controller at all.

Which action could fix this problem?

A. Reset the APs to the factory default settings

B. In each AP DHCP scope, delete the Colubris vendor-specific option

C. Add a DNS host entry that maps hp example com to 10.1.10.20.

D. Upload MSM software to the HP Wired-Wireless controller flash.

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 can be obtained by sending a calf with valid credentials https.Controller_IP.8443/sdn/v2.0/ auth

B. 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.

C. 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.

D. The application must be installed with a certificate that is signed by the same certification authority (CA) that signed the VAN SDN Controller certificate.

Table of Acronyms

Refer to the exhibit.

An administrator is configuring an MPLS and VPLS Martini to connect customer Sites 1, 2, and

3. The administrator has created Virtual Switch Instance (VSI) "CustomerA" for this purpose. How should the administrator connect customer Site 1 to the VPLS solution?

A. Create a service instance on the VLAN assigned to g1/0/1. Also create a global cross-connect group, and bind the CustomerA VSI and the service instance in that group.

B. Create a service instance on g1/0/1. Also create a global cross-connect group, and bind the CustomerA VSI and the service instance in that group.

C. Create a service instance on the VLAN assigned to g1/0/1. Bind (cross-connect) that instance to the CustomerA VSI.

D. Create a service instance on g1/0/1. Bind (cross-connect) that instance to the CustomerA VSI.

A company has an HP BYOD solution to let guests connect to a Guest SSID and log in through a registration page. The company needs an Employee SSID which enforces Wi-Fi Protected Access 2 (WPA2) with 802.1X. Employees must authenticate with certificates. Before authenticating with a device for the first time, the employees should be able to connect to the Guest SSID, access the guest registration page, and download valid certificates.

How does the administrator configure User Access Manager (UAM) to allow employees to download certificates from the registration page?

A. The User Endpoint Settings, create an Endpoint Configuration Distribution Policy that permits the employee groups.

B. In the Guest Manager settings for the employee manager, enable auto-registration in certificate mode.

C. In the Guest access policy, make sure that a policy binds the Employee SSID to an access rule with the onboarding VLAN ID.

D. In the Employee access service, make sure that a policy binds the Employee SSID to an access rule with the onboarding VLAN ID.

Table of Acronyms Refer to the exhibit.

A company has three data centers, each with a connection to a service provider network. The administrator has configured the settings shown in the exhibit, but the EVI links are not coming up. What should the administrator do to correct the problem?

A. Change the EVI site ID on each device to match.

B. Add destination IP addresses to the tunnel interfaces.

C. Enable 1S-1S on the VLAN interfaces that connect to the service provider.

D. Change the EVI network ID on each device to match.

A company has a Unified Wired-Wireless controller solution, which uses its local portal to authenticate guests.

The company is adding an HP BYOD solution with these requirements:

The User Access Manager (UAM) server with IP address 10.1 3.4 should provide the portal in which guests register own accounts

Guests should only have to register and log in once. After that, the guest device automatically logs in by MAC address

The administrator removes the local portal settings and begins to reconfigure the solution. What is one change that the administrator must take to the settings for the Guest SSID?

A. Apply an ACL that redirects HTTP traffic to 10.1.3.4.

B. Configure the associated WLAN-ESS interface as a hybrid port and enable MAC-based VLANs.

C. Create a domain that specifies 10.1.3.4 as the RADIUS server and define that as the portal domain.

D. Set up a remote portal server that specifies the UAM IP address and portal URL.

HP Unified Wired-Wireless controllers support wireless Intrusion Detection System (IDS)/intrusion prevention system (IPS) features. An HP AP radio is configured to participate in this solution in hybrid mode. Which functions can the hybrid mode radio fulfill?

A. Can support wireless clients and scan wireless traffic.

B. It can support wireless clients, scan wireless traffic, and implement countermeasures

C. It can implement countermeasures and scan wireless traffic.

D. It can scan wireless traffic and wired traffic.

An HP Unified Wired-Wireless controller controls an AP. The AP implements centralized forwarding. It supports 802.11n clients that implement Wi-Fi Multimedia (WMM) or 802.11 e. Some of the clients are sending traffic in high priority WMM queues.

How does the AP help to ensure that this traffic is prioritized in the wired LAN?

A. It maps 802.11 values from wireless traffic to DiffServ Code Points (DSCP) in packets tunneled to the controller.

B. It implements 802.11n fair scheduling on the port that connects to the switch.

C. It maps 802.1p values from wireless traffic to 802.11 e values in packets forwarded into the LAN.

D. It implements Spectralink and uses Spectralink-to-WMM compliance mode.