Free Access H3C.GB0-371-ENU.v2022-04-18.q117 Practice Test (Page 19)

Question 86

Regarding TC protection, the following statements are correct

A.The system monitors whether the number of TC-BPDU packets received during this time period is greater than the threshold. If it is greater than the threshold, the device will delete the address table entry again after the time expires, so as to avoid frequent deletion and forwarding Address table entry

B.After the TC protection function is enabled, within 10 seconds after receiving the TC-BPDU message, the device allows the number of address table item deletion operations immediately after receiving the TC-BPDU message can be controlled by the user

C.TC protection is configured in the system view

D.After the switch receives the TC-BPDU message, it will delete the MAC address table entry

Question 87

Regarding the description of Isolate-user-vlan technology and Super VLAN technology, the following is correct

A.SuperVLAN is a three-layer VLAN technology, so all switches that support Super VLAN technology are three-layer switches

B.Isolate-user-vlan is a Layer 2 VLAN technology, so switches that support isolate-user-vlan technology are Layer 2 switches

C.SuperVLAN technology is also called VLAN aggregation: the main purpose is to solve the waste of IP addresses or insufficient number of VLAN interfaces

Question 88

There are multiple IGMPv2 group member hosts (Client1/Client2/Client3) in the shared network segment, and multiple IGMPv2 routers (Router1/Router2), as shown in the following figure:
192.168.207.254 192.168.207.253
Router1 Router2
+++++
Clientl Client2 Client3
192.168.207.1 192.168.207.2192.168.207.3
So, the following statement is correct

A.Routerl and Router2 periodically send general group queries to the shared network segment

B.Only Router1 periodically sends general group queries to the shared network segment

C.After the host receives the query message, only Clients send the Report message

D.After the host receives the general group query message, after the first host sends the Report message, the other hosts' Report messages are suppressed

E.After the host receives the general group query message, Client1, Client2, and Client3 may all send Report messages

F.Only Router2 periodically sends general group queries to the shared network segment

Question 89

Regarding the POE system, ______ is correct.

A.Usually PSE can support two methods of mid-span and end-span, PD can only support one

B.POE usually uses min-span and end-span power supply methods

C.The POE system includes two parts: PSE equipment and PD equipment, where PD is the power supply device, and PSE is the power receiving device

D.The voltage provided by the POE power supply is 48V, and the output power does not exceed 13W

Question 90

The two routers are connected together through the LAN to form a VRRP backup group. The configuration on each interface is as follows:
[RTA-GigabitEthernet1/0] display this
ip address 192.168.0.252 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
vrrp vrid 1 priority 120
shutdown
[RTB-GigabitEthernet1/0]display this
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
It can be known from the above information

A.Router RTA is in VRRPBackup state, router RTB is in VRRP Master state

B.Router RTA is in VRRP Master state, router RTB is in VRRP Master state

C.Router RTA is in VRRP Initialize state, router RTB is in VRRP Master state

D.Router RTA is in VRRPMaster state, router RTB is in VRRP Backup state

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Question 86

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Question 88

Question 89

Question 90

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