H12-321 Online Practice Questions and Answers

Which is the correct sequence for selecting a proper AP for 802.Ilk-capable STAs in smart roaming?

1.

Determine whether latency-sensitive services exist.

2.

Filter out APs that do not support load balancing.

3.

Filter out APs that do not meet the CAC requirement.

4.

Select the AP with the strongest signal strength as the target AP.

5.

Select APs meeting the difference threshold conditions.

A. 1->2->3->4->5

B. 1->3->4->5->2

C. 1->5->3->2->4

D. 1->4->5->3->2

In order to solve the tunnel aggregation problem of WLAN roaming, the following principles for the processing of downlink broadcast and multicast packets are correct?

A. At the HAC, discard unknown unicast packets at the entrance to the roaming tunnel

B. Discard the multicast or broadcast packets of ARP, ND, DHCP, and mDNS at the HAC to avoid loops.

C. The transparent broadcast/multicast packet reaches the FAC, and the FAC converts the unicast packet according to the source of the tunnel.

D. FAP discards unknown unicast packets and forwards other packets to roaming STAs.

The APs that enable the load balancing function do not need to be connected to the same AC, but the wireless terminal can scan the SSIDs of APs that are load balanced with each other.

A. Correct

B. False

Which of the following statements about the first Fresnel zone is FALSE?

A. The first Fresnel zone affects RF communication integrity even though it is partially blocked.

B. The first Fresnel zone makes RF signals diffract or bend even through it is blocked.

C. Signal diffraction reduces RF energy received by antennas or even interrupts the communication link.

D. Under any circumstances, the proportion of the area blocked by obstacles in the first Fresnel zone cannot exceed 60%.

Which of the following commands is used to create a radio calibration profile?

A. [AC-wlan-view] rrm-profile name wlan-net

B. [AC-wlan-view] regulatory-domain-profile name domain1

C. [AC-wlan-view] wired-port-profile name wired-port

D. [AC-wlan-view] ap-system-profile name mesh-sys

Which are the correct procedures of Mesh route establishment in pro-active mode? (Multiple Choice)

A. 1. The MP periodically broadcasts PREQ.

2.

The MPs/MPPs receiving the PREQ reply with unicast PREP.

3.

The route and return route are established between two points.

B. 1. The MPP periodically broadcasts RANN.

2.

The MP receiving the RANN sends a unicast PREQ to the MPP.

3.

The MPP replies with a PREP.

4.

The route is established between MP and MPP.

C. 1. The MPP periodically broadcasts RANN.

2. The MP receiving the RANN sends a unicast PREP to the MPP.

D. 3. The route is established between MP and MPP.

E. 1. The MPP periodically broadcasts PREQ.

2.

The MP receiving the PREQ sends a unicast PREP to the MPP.

3.

The route is established between MP and MPP.

On the maintenance of the link status of the active and standby channels, you can prevent the TCP from being interrupted for a long time, but the protocol stack does not detect the connection interruption. You can prevent this by sending the primary and backup service packets and retransmission.

A. Correct

B. False

Which of the following statements about Option 43 in the N+l backup networking are TRUE? (Multiple Choice)

A. After Option 43 is configured, the AP only unicasts Discovery Request messages to the AC's IP addresses carried in Option 43.

B. If the AC with the IP address carried in Option 43 does not respond, the AP fails to discover the AC.

C. When configuring Option 43, you need to specify IP addresses of the active and standby ACs for the AP, and IP addresses of the other active ACs.

D. The command for setting Option 43 on the DHCP server to IP addresses of the active and standby ACs is option 43 sub-option 2 ip-address ip-address and.

Regarding the trigger mechanism of 802.1x authentication, is the following description correct?

A. 802.1x authentication trigger can only be initiated by the client

B. 802.1x authentication cannot be initiated by an authentication device (such as an 802.1x switch)

C. The 802.1x client can trigger authentication in multicast or broadcast mode.

D. The authentication device can trigger authentication in multicast or unicast mode.

In the WLAN network, the Weak IV attack detection function does not require dynamic blacklist support.

A. Correct

B. False