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Huawei H12-891 Practice Test - Questions Answers, Page 29

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Regarding BGP/MPLS IP VPN routing interactions, the following description is incorrect?

A.
The ingress PE changes the IPv4 route received by the CE to the VPNv4 route, and the storage
A.
The ingress PE changes the IPv4 route received by the CE to the VPNv4 route, and the storage
Answers
B.
PE is carried out according to different VPN instances What interacts with the CE is IPv 4 routing information
B.
PE is carried out according to different VPN instances What interacts with the CE is IPv 4 routing information
Answers
C.
After receiving the VPNv4 route issued by the ingress PE, the egress PE filters the VPNv4 route according to the RT attribute carried by the route
C.
After receiving the VPNv4 route issued by the ingress PE, the egress PE filters the VPNv4 route according to the RT attribute carried by the route
Answers
D.
The egress PE can send an IPv4 route to the remote CE via BGP, IGP, or static routing
D.
The egress PE can send an IPv4 route to the remote CE via BGP, IGP, or static routing
Answers
Suggested answer: D

Regarding the BGP/MPLS IP VPN network architecture, what is the error described below?

A.
sites can be accessed each other through vPNs, and a site can only belong to a VPN
A.
sites can be accessed each other through vPNs, and a site can only belong to a VPN
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B.
P devices only need basic MPLS forwarding capabilities and do not maintain VPN-related information
B.
P devices only need basic MPLS forwarding capabilities and do not maintain VPN-related information
Answers
C.
BGP/MPLSIPVPN network architecture consists of CE (Customer Edge), PE (Provider Edge) and P (Provider), of which PE and P Is a carrier device, CE is BGP/MPLSIPVPN with Household equipment
C.
BGP/MPLSIPVPN network architecture consists of CE (Customer Edge), PE (Provider Edge) and P (Provider), of which PE and P Is a carrier device, CE is BGP/MPLSIPVPN with Household equipment
Answers
D.
Under normal circumstances, CE devices are not aware of the presence of VPN, and CE devices do not need to support MPLS MP-BGP, etc
D.
Under normal circumstances, CE devices are not aware of the presence of VPN, and CE devices do not need to support MPLS MP-BGP, etc
Answers
Suggested answer: A

RTA is the source DR router, RTB is the RP router, and the multicast source sends multicast data to the RTA, but the PIM is not visible on the RTB Register the multicast source to which the message is registered, then the possible causes are ?

A.
Multicast network statically configures RP, while RTA router does not statically configure RP
A.
Multicast network statically configures RP, while RTA router does not statically configure RP
Answers
B.
The RP elected by RTA is not an RTB
B.
The RP elected by RTA is not an RTB
Answers
C.
RTB to RTA has no unicast routing, causing the RTB to fail RPF checks for the source
C.
RTB to RTA has no unicast routing, causing the RTB to fail RPF checks for the source
Answers
D.
The multicast network dynamically elects the RP instead RTA failed RPF check for BSR
D.
The multicast network dynamically elects the RP instead RTA failed RPF check for BSR
Answers
Suggested answer: A, B, C, D

Regarding the description of the permanent multicast address, the error is ?

A.
All routers running the PIM protocol listen on 22400100
A.
All routers running the PIM protocol listen on 22400100
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B.
All routers listen on 224002
B.
All routers listen on 224002
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C.
All hosts and routers in the network segment listen on 224001
C.
All hosts and routers in the network segment listen on 224001
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D.
All routers running the OSPF protocol listen to 224005
D.
All routers running the OSPF protocol listen to 224005
Answers
Suggested answer: A

If all the public IP addresses are used by a company's intranet users to access the Internet using NAT's No-pat method, what will happen to subsequent intranet users who access the Internet?

A.
automatically switch NAT to PAT after the Internet
A.
automatically switch NAT to PAT after the Internet
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B.
Subsequent intranet users will not be able to access the Internet
B.
Subsequent intranet users will not be able to access the Internet
Answers
C.
Synchronize messages to other NAT conversion devices for NAT conversion
C.
Synchronize messages to other NAT conversion devices for NAT conversion
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D.
Squeeze out the previous user and force NAT conversion to go online
D.
Squeeze out the previous user and force NAT conversion to go online
Answers
Suggested answer: B

The correct statement about the VRRP protocol version is ?

A.
VRRPv2 is only available for IPv4
A.
VRRPv2 is only available for IPv4
Answers
B.
VRRPv3 does not support authentication
B.
VRRPv3 does not support authentication
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C.
VRRPv2 supports authentication
C.
VRRPv2 supports authentication
Answers
D.
VRRPv3 is only available for IPv6
D.
VRRPv3 is only available for IPv6
Answers
Suggested answer: A, B, C

The Layer 3 logical interface on XLAN L3 Gateway that enables communication between different VXLAN virtual networks is ?

A.
Layer 2 sub-interface
A.
Layer 2 sub-interface
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B.
NVE interface
B.
NVE interface
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C.
VBDIF interface
C.
VBDIF interface
Answers
D.
VLANIF interface
D.
VLANIF interface
Answers
Suggested answer: C

The RSTP protocol provides a variety of protection functions, such as when the edge port is configured as a protection state, the edge port receives the BPDU packet processing method;

A.
Directly discard the BPDU packet
A.
Directly discard the BPDU packet
Answers
B.
Close the port
B.
Close the port
Answers
C.
After parsing the BPDU message, the relevant information is obtained
C.
After parsing the BPDU message, the relevant information is obtained
Answers
D.
Forward BPDU packets as required
D.
Forward BPDU packets as required
Answers
Suggested answer: B

The role of Link-LSA in OSPFv3 does not include ?

A.
Advertise to other routers on the link optional that is set in the Network LSA from which this link originates
A.
Advertise to other routers on the link optional that is set in the Network LSA from which this link originates
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B.
Advertise the per-port ID of this router to other routers on the link
B.
Advertise the per-port ID of this router to other routers on the link
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C.
Advertise the link-local address
C.
Advertise the link-local address
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D.
of this interface to other routers on the link Advertise this IPv6 prefix list to other routers on the link
D.
of this interface to other routers on the link Advertise this IPv6 prefix list to other routers on the link
Answers
Suggested answer: A

Regarding BGP MED, which of the following descriptions is correct?

A.
In the BGP routing rules, MED has a lower priority than AS Path, Praferred-value, Local-Preference, etc Origin
A.
In the BGP routing rules, MED has a lower priority than AS Path, Praferred-value, Local-Preference, etc Origin
Answers
B.
The default value for the B. BGP routing MED is 0
B.
The default value for the B. BGP routing MED is 0
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C.
By default, if there is no MED value in the route attribute, it is processed by 0 If the bestroute med-none-as-maximum command is configured, MED is processed as the maximum 4294967295
C.
By default, if there is no MED value in the route attribute, it is processed by 0 If the bestroute med-none-as-maximum command is configured, MED is processed as the maximum 4294967295
Answers
D.
By default, BGP routing rules can MED comparison of routes from different autonomous systems
D.
By default, BGP routing rules can MED comparison of routes from different autonomous systems
Answers
Suggested answer: A, B, C
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