[UPDATED 2022] Huawei H12-831_V1.0-ENU Questions Prepare with Free Demo of PDF
NEW 2022 Certification Sample Questions H12-831_V1.0-ENU Dumps & Practice Exam
NEW QUESTION 132
According to this picture, we can judge:
- A. R4 and ee8c.aOe2.baf3 only established IPv6 IS-IS neighbors
- B. R4 and ee8c.aOc2.baf3 have established IPv4 and IPv6 IS-IS neighbors
- C. R4 does not have any IS-IS neighbors
- D. R4 and ee8c.aOc2.bat3 only established IPv4 IS-IS neighbors
Answer: B
NEW QUESTION 133
MPLS is called multi-protocol label switching. Which description is correct about the label in MPLS? (Multiple choice)
- A. MPLS system has a variety of label publishing protocols, such as LDP is a label publishing protocol
- B. MPLS supports single-layer labels as well as multi-layer labels
- C. The label is carried by the header of the MIPLS message and has a global meaning, that is, the label value of all routers cannot be repeated
- D. A label is an identifier with a fixed length and only local meaning, which is used to uniquely identify the FEC to which a group belongs
Answer: A,B,D
NEW QUESTION 134
When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear.
Regarding equal-cost routes in an IS-IS network, which of the following descriptions is wrong?
- A. When the number of equal-cost routes in the networking is greater than the number configured through commands, and the priorities of these routes are the same, the route with the higher System ID of the next hop device is preferred for load sharing
- B. After the equal-cost routing priority is configured, when the IS-IS device forwards the traffic that reaches the destination network segment, it will not adopt the load sharing method, but will forward the traffic to the next-hop with the highest priority.
- C. For each route in the equal-cost route, the priority can be specified, and the route with the higher priority will be preferred. The rest are used as backup routes
- D. If negative arbitration sharing is configured, the traffic will be evenly distributed to each link
Answer: B
NEW QUESTION 135
In a multi-level RR scenario, a large number of second-level RR are connected to the first-level RR, which may cause the BGP routing table of the first-level RR to overflow. What method can be used to reduce the risk of overflow of the BGP routing table of the first-level RR?
- A. Set the same Cluster-lD
- B. Route aggregation
- C. ORF
- D. Routing control
Answer: B
NEW QUESTION 136
Which of the following BGP routing attributes cannot control BGP route selection?
- A. AS Path
- B. Community
- C. MED
- D. Originator ID
Answer: B
NEW QUESTION 137
The RR rules for advertising routes break the IBGP split horizon rules, so it may cause loops in the AS.
What routing attributes does RR use to prevent loops? (Multiple choice)
- A. Cluster List
- B. Next hop
- C. AS-PATH
- D. Originator ID
Answer: A,D
NEW QUESTION 138
From the user's point of view, any phenomenon that affects the business can be defined as a failure.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 139
In an intra-domain MPLS VPN network, when a data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Which of the following description is wrong about the two layers of labels? (Multiple choice)
- A. The outer label of MPLS VPN is allocated by the LDP protocol or statically, and the inner label is allocated by the MP-BGP neighbor at the correct end.
- B. The outer label is used to correctly send the data packet to the corresponding VPN on the PE device
- C. By default, the outer label is ejected before the packet is forwarded to the last-hop device
- D. The outer label of MPLS VPN is called the private network label. The inner label is called the public network label.
Answer: B,D
NEW QUESTION 140
Which packets can Huawei equipment perform traffic suppression for? (Multiple choice)
- A. Broadcast
- B. Multicast
- C. Known unicast
- D. unknown Unicast
Answer: A,B,C,D
NEW QUESTION 141
A park deployed IPv6 for business testing. There are 4 routers in the network, running OSPFV3 to realize the interconnection and intercommunication of IPv6 networks. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of the Link-LSAs. Regarding the description of the LSA, which of the following statements are correct? (Multiple choice)
- A. The router that generated the LSA is R2
- B. The link-local address of the R2 interface GE0/0/0 is FE80::2E0; FCFF:FECD:4F79
- C. The LSA shows that R2 does not support external routing, but participates in IPv6 routing calculations
- D. The IPv6 address prefix of the R2 interface GE0/0/0 is 2001:2343: 23: :/64
Answer: A,B,D
NEW QUESTION 142
(Connection) The default MPLS label release method and label distribution control method of Huawei routers and label retention methods are respectively
Answer:
Explanation:
NEW QUESTION 143
Regarding BGP/MPLS IPVPN data forwarding, which of the following descriptions is wrong?
- A. The outer label during data forwarding can be allocated by LDP
- B. The data sent by the PE to the CE is an IPv4 packet
- C. When data is transmitted on the BCP/MPLS IPVPN backbone network, it always carries two layers of labels
- D. The inner label during data forwarding is assigned by MP-BGP
Answer: C
NEW QUESTION 144
According to this figure, which of the following is the correct description of the IPv6 routing information calculated by the R4 router through IS-IS?
- A. R4 has 2 unequal IS-IS default routes
- B. R4 has no IS-IS routing entry
- C. R4 has 2 equal-cost IS-IS default routes
- D. R4 has 1 IS-IS default route
Answer: C
NEW QUESTION 145
To ensure security, authentication can be configured in the OSPFv3 process area view.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 146
The output information of a router is as follows. Which of the following reasons cause the OSPF adjacency relationship to fail to be established normally? (Multiple choice)
- A. The interval for sending Hello packets is inconsistent
- B. Inconsistent area types
- C. Inconsistent area codes
- D. The IP address mask of the interface is inconsistent
Answer: A,C
NEW QUESTION 147
Which of the following descriptions is correct about configuring static LSP in MPLS network? (Multiple choice)
- A. When a certain LSR is an Egress LSR, only In Labe1 needs to be configured, the range is 16~1023
- B. When a certain LSR is a Transit LSR, In Labe1 and 0ut Label need to be configured at the same time, the range is 16~1023
- C. When an LSR is an Ingress LSR, only Out Label needs to be configured, ranging from 16 to 1048575
- D. When a certain LSR is a Transit LSR, In Labe1 and Out labe1 need to be configured at the same time, the range of In Labe1 is 16~1023, and the range of Out Labe1 is 16~1048575
Answer: A,C,D
NEW QUESTION 148
According to the configuration shown in the figure below, you can know that how many interfaces of R4 are advertised into IS-IS?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 149
ping -a X-c Y-s z -vpn-instance M 10.5.16.2, what is the meaning of this command is? (Multiple choice)
- A. The source IFP address of the ping packet is X
- B. The ping packet belongs to VPN instance M
- C. The ping sends Y ICMP requests
- D. The ICMP request of this ping, the packet size is Z (excluding IP and ICMP header)
Answer: A,B,C,D
NEW QUESTION 150
The rollback operation of the project cutover can be determined temporarily according to the situation during the cutover, and no advance planning is required.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 151
After the cutover is completed, which items generally need to be checked? (Multiple choice)
- A. Data flow
- B. Software version
- C. Physical topology
- D. Control plane entries
Answer: A,D
NEW QUESTION 152
OSPF is deployed in a campus to realize network interoperability. The L SDB of R2 is shown in the figure. What information can be derived from this LSDB? (Multiple choice)
- A. R2 has issued a default route in the OSPF process
- B. R2 converts the default route of Type7 LSA to the default route of Type5 LSA
- C. Area 1 is an NSSA area
- D. There is no Type3 LSA in Area1, it may be that the outbound direction of R2 in Area1 is correct. Type3 LSA is filtered
Answer: A,C
NEW QUESTION 153
Which of the following series can be matched by the regular expression 100.S? (Multiple choice)
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A,C
NEW QUESTION 154
Configure ipv6 preference in IS-IS protocol view. The function of this command is to configure the preference of IPv6 routes generated by lS-Is protocol.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 155
Configure under a certain interface: isis timer hello 5 leve1-2, which of the following statements is correct?
- A. The interval for sending Level-2 CSNP packets of this interface is 5s
- B. The hello packet sending interval of Level-1 and Leval-2 of this interface is 3s.
- C. The interval for sending Level-2 hello packets on this interface is 5s
- D. The interval for sending Level-1 hello packets on this interface is 5s
Answer: C
NEW QUESTION 156
Which of the following descriptions is wrong?
- A. The LSP established by statically assigning labels can also be dynamically adjusted according to network topology changes without the intervention of the administrator
- B. The principle to be followed for manual label allocation is: the value of the outgoing label of the upstream node is the value of the incoming label of the downstream node
- C. LSP is divided into static LSP and dynamic LSP. The static LSP is manually configured by the administrator, and the dynamic LSP is dynamically established using the label protocol
- D. Dynamic LSP is dynamically established through label distribution protocols, such as MP-BGP, RSVP-TE, LDP
Answer: A
NEW QUESTION 157
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