최신 H12-821_V1.0-ENU 무료덤프 - Huawei HCIP-Datacom-Core Technology V1.0

A. The AP that realize wireless roaming must be in the same basic service set (BSS)

B. AP that realizes wireless roaming must be in the same Extended Service Set (ESS)

C. AP that realizes wireless roaming must have signal coverage overlapping areas

D. An AP that realizes wireless roaming does not need to have a signal covering the overlapping area

A. Designated port

B. Preliminary port

C. Root port

D. Edge port

A. FALSE

B. TRUE

A. LSA3

B. LSA5

C. LSA2

D. LSA4

A. In PIM-SM, multicast data traffic does not necessarily have to be forwarded through RFP.

B. For a multicast group, there can be multiple RP addresses at the same time to improve network reliability.

C. In a multicast network, multiple C-RPs can exist at the same time to improve the high availability of the RP.

D. All multicast streams in the shared tree are forwarded to the receiver through the RP.In EPIM-SM, different RP addresses can be configured for different multicast groups to achieve traffic load sharing.

A. When the network is initialized, the ports of all the switches in the figure are designated ports and are in the Discarding state

B. The upstream link port of SW2 will immediately enter the Forwarding state after receiving the RSTBPDU with the Proposal bit set from SW1.

C. The device interconnection port of the downstream link quickly enters the Forwarding state through the P/A mechanism

D. The edge port of SW3 will immediately enter the Forwarding state after a round of P/A mechanism

A. FALSE

B. TRUE

A. The devices at both ends determine the active end according to the system LACP priority and system

B. Exchange information with the peer through LACPDU (Link Aggregation Control Protocol Data Unit)

C. Based on IEEE802.3au standard.

D. The devices at both ends determine the active interface according to the LACP priority and interface ID of the passive interface

A. One multicast IP address can correspond to multiple multicast MAC addresses.

B. The high 24 bits of the multicast MAC address are 0x01005e, the 25th bit is fixed to 1, and the low 23 bits of the MAC address are the low 23 bits of the multicast IP address.

C. The function of the multicast MAC address is to identify receivers belonging to the same multicast group on the link layer.

D. One multicast MAC address can correspond to multiple multicast IP addresses.

A. In LACP mode, the devices at both ends of the link send LACP messages to each other.

B. In LACP mode, all active interfaces participate in data forwarding and share load traffic.

C. The number of active ports cannot be set in LACP mode.

D. There can only be a maximum of 4 active ports in LACP mode.

A. FALSE

B. TRUE

A. 100

B. 0

C. 180

D. 10

A. Forward BPDU messages as required

B. Close the port

C. Obtain relevant information after the BPDU message

D. Directly discard the BPDU message

A. MED can only be transferred within this AS

B. MED is an optional non-transitional attribute

C. The default value of MED is 0

D. The default value of MED is 100