HPE Networking Central (HPE6-A90) Certification Sample Questions

01. A campus applies port settings automatically according to what connects: phones receive one build, access points another, and user devices a third. New classes of legitimate equipment appear from time to time and must not be left off the network while somebody is found to categorize them. An unfamiliar device is plugged into a desk port and matches none of the defined categories.
What should the design provide for?
a) Rejection of any device that does not match a category.
b) An alert to the operations team so the device can be categorized manually.
c) Automatic assignment to the category matching the previous device on that port.
d) A default treatment that constrains a device matching no category.

02. An administrator changes the policy attached to a role while users holding that role are connected and working. Which two statements describe what happens?
(Select TWO.)
a) The change applies to those users without them reconnecting.
b) The change takes effect only for users who connect after it is made.
c) Users who did not hold that role are unaffected by the change.
d) Affected users are disconnected so that their new permissions can be applied.

03. A closet design uses a stack of access switches and provides a single uplink from that stack to the core, on the grounds that the stack is already redundant. How should this reasoning be judged?
a) Sound, because a stack distributes traffic across all of its members' uplinks.
b) Unsound, because the stack covers member failure, not the path out.
c) Sound, provided the uplink terminates on a redundant pair at the core.
d) Unsound, because a stack cannot forward traffic to the core without a bundled uplink.

04. Every device on one VLAN across a site becomes slow at the same moment, while devices on other VLANs at the same switches are unaffected. Interface error counters are clean throughout. Which two observations would confirm the most likely cause?
(Select TWO.)
a) The error and discard counters on the uplinks serving those switches.
b) Whether the affected devices hold addresses from the correct range for that VLAN.
c) Whether the effect stops at the boundary of that VLAN rather than following a physical path.
d) The proportion of traffic on that VLAN that is addressed to every station at once.

05. An access switch supports a floor of desk phones and wireless access points, all drawing power from the switch. An engineer adds two more access points to spare ports. Both new access points fail to power on, while every device already installed continues to work normally.
What is the most likely explanation?
a) The switch has no power budget left to allocate to the additional devices.
b) The new access points are running software incompatible with the switch.
c) The switch has lost its management channel and cannot authorize new devices.
d) The two spare ports are administratively disabled rather than faulty, and pass neither traffic nor power.

06. A campus currently expresses wired access policy as access lists maintained on several hundred switch ports. A proposal is made to move to role-based policy with Dynamic Segmentation. The team asks what they gain, given that the existing lists work. What is the strongest argument for the change?
a) A policy change is made once against a role instead of on every port it affects.
b) Role-based policy removes the need to authenticate users on the wired network.
c) Traffic tunneled to a gateway consumes less capacity on the access layer.
d) Access lists cannot express the destinations a role-based policy can express.

07. A team currently assigns wireless channels and power by hand, revisiting the plan once a year. They are considering automated radio management instead. Which two arguments support the change?
(Select TWO.)
a) Automated management removes the need to survey a site before deployment.
b) Adjustments can be made across a site as a whole rather than device by device.
c) Automated management guarantees that interference will not occur.
d) The radio environment changes continuously, while an annual plan does not.

08. Desk positions each have one cable. A desk phone connects to it, and the user's computer connects through the phone. Voice and data traffic must be kept in separate VLANs. How is this achieved on the access port?
a) Two separate VLANs are assigned to the port and the phone chooses between them.
b) The phone and the computer share one VLAN with traffic separated by priority.
c) The data VLAN untagged for the computer, the voice VLAN tagged for the phone.
d) The port is configured as a full trunk carrying every VLAN at the site.

09. A user with a tunneled wireless session walks across a campus and is served by several access points in turn. All of them tunnel to the same gateway cluster. Which two things remain true of the session as the user moves?
(Select TWO.)
a) Its traffic continues to be delivered to the same cluster.
b) The policy attached to the user's role continues to apply unchanged.
c) The session is re-established each time a different access point takes it on.
d) Its traffic is carried by the same access point throughout.

10. A branch loses its connection to the wider network. Staff on the corporate wireless network lose access to everything, including a server in the branch itself. Staff on a second wireless network at the same branch continue to reach that server. What distinguishes the two networks?
a) One is served by access points that have failed and the other is not.
b) One applies a role policy denying access to the server and the other does not.
c) One has lost its management channel to the platform and the other has not.
d) One is tunneled to a gateway and the other is bridged locally.