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Huawei H12-891 Practice Test - Questions Answers, Page 30

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Regarding the certification of the ISIS protocol, there is a correct statement
View the details of all VPN instances on a network device and the results are as follows, which of the following statements is wrong?( Multiple choice questions).
If the PIM-SM protocol is running in a multicast network , you need to configure RP, and the configuration equation of RP is divided into dynamic RP and static RP. The following configuration description of the RP is correct (radio).
The switch SWA and SWB are connected together by 2 Ethernet links, where the switch SWA has the following interface configuration:
The default configured switch has an empty MAC address table at this time , and Host A connected to the switch issues the first unicast data frame, so what will the switch do after receiving the teaching system?( Single choice questions).
The Option field in OSPFv3 appears in all LSAs
In Huawei devices, when SIS introduces external routes and sets external route tags for route information, the Metric type of ISIS does not need to be modified and remains default.
What of the following actions can enable fast failure detection on multicast networks?
As shown in the figure, which of the following options satisfies two routers to establish an ISIS neighbor?( Single choice questions).
In the use of the CP protocol, the following description is correct?

Question 291

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What does IPV6 enable topology ipv6 mean under IS-IS protocol view?

A.
Does not have any meaning
A.
Does not have any meaning
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B.
SPF calculation for IPv6 is not supported
B.
SPF calculation for IPv6 is not supported
Answers
C.
SPF calculation is performed separately in the topology of IPv4 and IPv6,
C.
SPF calculation is performed separately in the topology of IPv4 and IPv6,
Answers
D.
IPv4, IPv6 using the same topology for SPF calculation
D.
IPv4, IPv6 using the same topology for SPF calculation
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Suggested answer: C

Question 292

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The value of OSPF and BFD linkage is ? Radio

A.
Any change in BFD status is realized by detecting the BFD at the millisecond level, which correlates the OSPF state and realizes the purpose of OSPF rapid sensing link state
A.
Any change in BFD status is realized by detecting the BFD at the millisecond level, which correlates the OSPF state and realizes the purpose of OSPF rapid sensing link state
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B.
Does not affect OSPF neighbor status
B.
Does not affect OSPF neighbor status
Answers
C.
BFD packet transmission interval can reach the 100-second level, which is slower than the OSPF induction link state
C.
BFD packet transmission interval can reach the 100-second level, which is slower than the OSPF induction link state
Answers
D.
OSPF's hello send interval is seconds, which is faster than BFD inductive link state
D.
OSPF's hello send interval is seconds, which is faster than BFD inductive link state
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Suggested answer: A

Question 293

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A campus deployed both IPv4 and IPv6 networks for service testing, and ran IS-S to interconnect the networks. (The S-S routing protocol has good scalability and is widely used in the live network.)

Regarding IS-IS extensibility, which of the following statements is true?

A.
In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
A.
In order to support IPv6, IS-IS needs to add TLV to carry IPv6 address information
Answers
B.
IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible
B.
IS-IS uses the TLV structure to build messages, making lS-IS more flexible and extensible
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C.
NLPID is a new type of TLV added by IS-IS to support IPv6
C.
NLPID is a new type of TLV added by IS-IS to support IPv6
Answers
D.
For IS-IS, adding new features simply adds a new TLV to
D.
For IS-IS, adding new features simply adds a new TLV to
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Suggested answer: A, B, D

Question 294

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When configuring AS-Path-Filter, ip as-path-filter 10 permit_100$ indicates a matching route received from the A5100 but not from the AS100

A.
TRUE
A.
TRUE
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B.
FALSE
B.
FALSE
Answers
Suggested answer: B

Question 295

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Regarding the domain-authentication-mode md5 hello command in the ISIS process, the correct explanation is ?

A.
ISIS authentication cannot be applied in IPv6 environments.
A.
ISIS authentication cannot be applied in IPv6 environments.
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B.
This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.
B.
This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.
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C.
All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.
C.
All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.
Answers
D.
D.
Answers
Suggested answer: C

Explanation:

A. ISIS authentication cannot be applied in IPv6 environments.

B. This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.

C. All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.

D. outing domain authentication is primarily used to allow level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.

Answer: C

Explanation:

Question 296

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Which of the following configurations is the correct OSPFv3 route aggregation configuration:

A.
[Huawei]ospfv3 1 [Huawei-ospfv3-1J]area 1[Huawel-ospfv3-1-area-0001]abr-summary fc00:0-0:48 cost 400
A.
[Huawei]ospfv3 1 [Huawei-ospfv3-1J]area 1[Huawel-ospfv3-1-area-0001]abr-summary fc00:0-0:48 cost 400
Answers
B.
[Huawei] interface gigabitethernet 1/0/0[Huawei-GigabitEthernet1/0/0]asbr-surmary fcO0-0:0:48 cost 20
B.
[Huawei] interface gigabitethernet 1/0/0[Huawei-GigabitEthernet1/0/0]asbr-surmary fcO0-0:0:48 cost 20
Answers
C.
[Huawei]ospfv3 1 [Huawei-ospfv3-1]asbr-surmary fcO0-0:0::48 3 cost 20 tag 100
C.
[Huawei]ospfv3 1 [Huawei-ospfv3-1]asbr-surmary fcO0-0:0::48 3 cost 20 tag 100
Answers
D.
[Huawei]ospfv3 1 [Huawei-ospfv3-1]abr-surmary fcO0:0:0:48 cost 400
D.
[Huawei]ospfv3 1 [Huawei-ospfv3-1]abr-surmary fcO0:0:0:48 cost 400
Answers
E.
(Huaweijospf3 1 Huawei-ospfv3-1Jarea 1Huawei-ospfv3-1-area-0001]asbr-sumary fcO0:0:0: 48 cost 20 tag 100
E.
(Huaweijospf3 1 Huawei-ospfv3-1Jarea 1Huawei-ospfv3-1-area-0001]asbr-sumary fcO0:0:0: 48 cost 20 tag 100
Answers
Suggested answer: A, C

Question 297

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In order for routers at both ends of the IPv6 over lPv4 manual tunnel to exchange routing information, OSPV3 can be enabled on the tunnel, osPFv3 will be able to form a normal neighbor relationship, and the tunnel interface will be treated as a P2P link interface.

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: A

Question 298

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If we have a VPN instance configured on a router, if we need to view the VPN route on a Huawei router, which of the following commands should we use?

A.
display ip routing-table vpn-instance vpn-instance-name
A.
display ip routing-table vpn-instance vpn-instance-name
Answers
B.
display ip routing-table
B.
display ip routing-table
Answers
C.
display vpn routing-table
C.
display vpn routing-table
Answers
D.
display ip vpn-instance
D.
display ip vpn-instance
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Suggested answer: A

Question 299

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Is the following statement about VLAN aggregation correct?

A.
Sub-VLAN is used to isolate broadcast domains
A.
Sub-VLAN is used to isolate broadcast domains
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B.
A Super VLAN can contain one or more Sub-VLANs
B.
A Super VLAN can contain one or more Sub-VLANs
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C.
The super Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
C.
The super Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
Answers
D.
Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
D.
Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
Answers
Suggested answer: A, B

Question 300

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Regarding the characteristics of CE double attribution, the description is wrong with ?

A.
CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.
A.
CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.
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B.
CE and PE form a CE dual-home network, which can ensure high network availability.
B.
CE and PE form a CE dual-home network, which can ensure high network availability.
Answers
C.
VRFs of two PEs connected to the same CE can belong to different VPNs.
C.
VRFs of two PEs connected to the same CE can belong to different VPNs.
Answers
D.
In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.
D.
In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.
Answers
Suggested answer: C
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