[Apr-2025] Huawei H12-891_V1.0-ENU DUMPS WITH REAL EXAM QUESTIONS
2025 New 2Pass4sure H12-891_V1.0-ENU PDF Recently Updated Questions
NEW QUESTION # 61
The value of OSPF and BFD linkage is? Radio
- A. BFD packet transmission interval can reach the 100-second level, which is slower than the OSPF induction link state
- B. Does not affect OSPF neighbor status
- C. OSPF's hello send interval is seconds, which is faster than BFD inductive link state
- D. 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
Answer: D
NEW QUESTION # 62
MSTP switches treat RSTP switches as MSTP domains, MSTP, which are formed by a single switch. The interchange resolves the RSTBPDU to MSTBPDU, where IRPC is 0
- A. False
- B. True
Answer: B
NEW QUESTION # 63
If multiple candidate RPs are configured in a multicast group, which of the following parameters does the RP that elect the group from multiple candidate RPs need to be compared?
- A. The IP address of the C-RP interface Number of
- B. C-RP priority
- C. The mask length of the group range for the C-RP service that matches the group address that the user joined
- D. C-RP interface
Answer: A,B,C
NEW QUESTION # 64
Dual-bucket, two-speed is used in traffic governance, where the number of tokens in a C bucket is TC and the number of tokens in a P bucket is TP.
When a message of length B enters, which of the following sentences is correctly described? (Multiple choice questions).
- A. If TP-B~O and TC-B < 0, the message is marked green
- B. If TP-B >O and TC-B > 0, the message is marked as a green
- C. If TP-B>0 and TC-B < 0, the message is marked yellow
- D. If TP-B<0 and TC-B-0, the message is marked in red
Answer: B,C,D
NEW QUESTION # 65
The following statement about IS-IS (IPv6) is correct?
- A. In order to support the processing and calculation of IPv6 routes, IS-IS has added TLV232 and 236
- B. By default, IS-IS has the multi-topology feature turned on
- C. In order to support the processing and calculation of IPv6 routes, IS-IS has added NLPID to the 129 TLV
- D. IS-IS works at the data link layer and only needs to add a new TLV to support IPv6
Answer: A,C,D
NEW QUESTION # 66
Why is BGP an enhanced distance vector routing protocol?
- A. BGP cannot accept routes that carry a local AS number in the AS_PATH
- B. According to the routing rules of BGP routing, the route with lower MED is preferred
- C. NEXT_HOP is a recognized mandatory attribute
- D. BGP uses the ASPATH attribute to record all autonomous system numbers that a route passes through into an AS list, and based on that attribute, routes with shorter AS-PATH are preferred
Answer: D
NEW QUESTION # 67
Regarding the Stub region in the OSPF protocol, the following statement is correct.
- A. backbone areas that are not allowed in Stub regions cannot be configured as Stub regions.
- B. Injecting typeT LSA
- C. ASBR cannot exist in the Stub zone
- D. Virtual connections cannot traverse the Stub region.
Answer: A,B,C,D
NEW QUESTION # 68
Regarding route introduction, the following description is correctly? (Multiple choice questions).
- A. When ISIS introduces an external route, if you do not specify the route type that is introduced, the Level-1 route is introduced by default on the L1/2 router
- B. OSPF introduces two types of external routes, with the first type of external route taking precedence over the second type of external route.
- C. Use the default-route imported command in BGP only to introduce default routes that already exist in the local IP routing table.
- D. When ISIS introduces an external route, if you do not specify the type of route that is introduced, the Leve1-1 route is introduced by default on the L1 router .
Answer: B,C
NEW QUESTION # 69
Regarding the description of VRRP Fast Switching, the error is?
- A. at the same time If you configure to monitor multiple BFDs at the same time. Then the various configurations are interrelated and may have an impact
- B. A VRRP backup group cannot monitor Peer BFD, Link BFD, and Normal BFD
- C. Use VRRP to monitor BFD sessions or EFM features, either in BPD sessions or EFM session states After the change, the VRRP module is notified to achieve fast VRRP switching
- D. When a VRRP backup group monitors normal BFD, when the BFD state changes, the active-standby state is changed by modifying the backup group priority
Answer: A,B
NEW QUESTION # 70
IGMP SSMMapping is bound to multicast through a static multicast source, so that members of IGMPv1 and IGMP2 can also access the SSM multicast network. The following statement about IGMPSSMMapping is wrong? (Radio).
- A. If the IGMP SSM Mapping feature is not enabled, neither IGMPv1 nor IGMPv2 supports multicast for deploying SSM modules
- B. The multicast address of the SSM is 232000~232255255255
- C. IGMP SSM Mapping does not process reporting messages from IGMPv3 In order to ensure that the same network segment runs any version
- D. IGMP hosts can make SSM services run IGMPv3 on the multicast router socket connected to the network segment where the member host is located
Answer: C
NEW QUESTION # 71
Regarding the OSPFv3 protocol, the following description is incorrect?
- A. You can support running multiple instances on a single link
- B. OSPFv3 message header will contain the Instance ID field
- C. In the case of sharing a single router, each OSPFV3 process runs independently
- D. In the same OSPFv3 process under the same interface, you can run multiple instances of
Answer: D
NEW QUESTION # 72
The following link-LSA for OSPFv3 is correct?
- A. ?Link-LSA???Prefix?Prefixoptions???Ox00,?? Prefix????IPv6??????
- B. The Option field exists in the header of the LSA, not in the data area of the Link-LSA
- C. Contains both the link-local address of this interface and all IPV6 prefixes of the same area on this router.
- D. Contains both the link-local address of the interface and all IPv6 prefixes on the interface.
Answer: D
NEW QUESTION # 73
In an MPLS BGPVPN environment, if tags are distributed only through BGP and LDP, the MPLS tags of the message can be up to two layers of tags
- A. False
- B. True
Answer: B
NEW QUESTION # 74
?BGP4+?,Update????M IP_R EACH_NLRI?????next hop network address??????
- A. Can only be a link-local address
- B. at the same time Can only be a global unicast address
- C. It can be just link-local address
- D. You can carry a link-local address and a global unicast address
Answer: D
NEW QUESTION # 75
LDP and IGP linkage refers to the release of IGP and TD routes to ensure that LDP and IGP linkage complete network efficiency, so that KGP and LDP maintains a consistent path, minimizing traffic loss, thereby improving the reliability of the entire network.
- A. False
- B. True
Answer: B
NEW QUESTION # 76
What are the differences between traffic policing and traffic shaping?
- A. The token bucket algorithm is used for traffic supervision, and the SPD algorithm is used for traffic shaping
- B. Traffic shaping is applied in the inlet direction and traffic supervision is applied in the outlet direction
- C. For traffic shaping, the router caches excess packets until bandwidth is available again
- D. For traffic policing, the usage of the buffer can be adjusted for traffic exceeding the CIR
- E. For traffic shaping, it can be over-CIR Traffic adjustment for the usage of the buffer
Answer: C,E
NEW QUESTION # 77
CMPv6 uses the Type field to identify the message type, and according to the value of the type field, we can divide the ICMPv6 message into two categories, one is the error message and the other is the information message
- A. False
- B. True
Answer: B
NEW QUESTION # 78
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