[Dec-2021] H12-261-ENU Dumps Full Questions - HCIE-R&S Exam Study Guide
Exam Questions and Answers for H12-261-ENU Study Guide
NEW QUESTION 36
OSPFv3 and ISIS are running on the router at the same time. You need to import OSPFv3 routes to ISIS. Which of the following configurations is correct: (Multiple choice)
- A. [Huawei] isis 1 [Huawei-isis-1] is-level level-1 [Huavvei-isis-1] network-entity 47.0001.0000.0000.0002.00 [Huawei-isis-1] ipv6 enable topology standard [Huawei-isis-1] ipv6 import-route ospfv3 1 level-1 [Huawei-isis-1] quit [Huawei] ospfv3 1 [Huaweiospfv3-1] router-id 2.2.2.2
- B. [Huawei] isis 1 [Huawei-isis-1]is-level level-1 [Huavvei-isis-1] network-entity 47.0001.0000.0000.0002.00 [Huawei-isis-1] ipv6 enable topology standard [Huawei-isis-1] ipv6 import-route ospfv3 1 [Huawei-isis-1] quit [Huawei] ospfv3 1 [Huawei-ospfv3-1] router-id 2.2.2.2
- C. [Huawei] isis 1 [Huavvei-isis-1] network-entity 47.0001.0000.0000.0002.00 [Huawei-isis-1] import-route ospfv3 1 [Huawei-isis-1] quit [Huawei] ospfv3 1 [Huawei-ospfv3-1] router-id 2.2.2.2
- D. [Huawei] isis 1 [Huawei-isis-1]is-level level-1 [Huavvei-isis-1] network-entity 47.0001.0000.0000.0002.00 [Huawei-isis-1] import-route ospfv3 1 level-1 [Huawei-isis-1] quit [Huawei] ospfv3 1 [Huawei ospfv3-1] router-id 2.2.2.2
- E. [Huawei] isis 1 [Huavvei-isis-1] network-entity 47.0001.0000.0000.0002.00 [Huawei-isis-1] ipv6 enable topology standard [Huawei-isis-1] ipv6 import-route ospfv3 1 level-1 [Huawei-isis-1] quit [Huawei] ospfv3 1 [Huaweiospfv3-1] router-id 2.2.2.2
Answer: A,E
NEW QUESTION 37
Cross-device link aggregation enables data stream transmission and mutual backup of stack member switches. However, because of the limited bandwidth of stack cables between stack devices, which of the following methods can be used to improve forwarding efficiency?
- A. Enable traffic local priority forwarding
- B. Connect stack devices through stack cards
- C. Enable stack multiple master check function
- D. Configure stack system MAC address switching
Answer: A
NEW QUESTION 38
Which of the following description about the CHAP authentication function in the PPP protocol is correct? (Multiple Choice)
- A. If the authenticator does not configure a username, the password cannot be configured on the authenticated interface.
- B. The user name must be configured under the authenticated interface of CHAP authentication.
- C. Three-message interactive authentication is required, and the username is transmitted only on the network without transmitting the password.
- D. Calculate a Hash value by the MD5 algorithm using the authentication sequence ID, random number and key
Answer: B,C,D
NEW QUESTION 39
Regarding the BGP anti-ring mechanism, which of the following description is correct? (Multiple Choice)
- A. Use the AS_PATH attribute between autonomous systems to prevent loops.
- B. Routes learned from IBGP are not advertised to IBGP neighbors to prevent routing loops within the AS.
- C. The Cluster List attribute is used for the anti-ring in the reflector cluster. If the router discovers that the cluster list of the route entry contains its own cluster ID, it will reject the route.
- D. You can use the AS_CONFED_SET attribute to prevent loops within the federation.
Answer: A,B,D
NEW QUESTION 40
The path selection tool can define multiple entries, which of the following tools will automatically generate and reject any entries at the end of the configuration? (Multiple Choice)
- A. IP-prefix
- B. Community -filter
- C. AS-Path-filter
- D. Route policy
Answer: A,B,C,D
NEW QUESTION 41
Which is wrong about the EVPN Type 5 class routing?
- A. Type 5 is an IP prefix route.
- B. Type 5 routing carries both Layer 2 VNI and Layer 3 VNI
- C. The IP Prefix field can carry either the host IP address or the network segment address.
- D. Type 5 routing carries Layer 3 VNI.
Answer: B
NEW QUESTION 42
Which of the following description about the related information of BGP4+ is correct? (Multiple choice)
- A. Bgp4+ can use the dampening command to suppress IBGP routes.
- B. BGP4+ does not support automatic route aggregation.
- C. Modifying the Router ID of the BCP will cause the BGP connection between the routers to be re-established.
- D. The Next Hop attribute in BCP4+ is represented by the Pv6 address, which can be the link-local address of the next hop.
Answer: A,B,C
NEW QUESTION 43
Non-Stopping-Forwarding (NSF) and Non-Stopping Routing (NSR) are two solutions for high reliability. The following statements which are correct?
- A. NSR routers need to negotiate NSR support through specific packet negotiation.
- B. After the NSR is enabled, if the main control board fails when the service batch backup is not completed, the NR switch cannot be completed.
- C. NSF routers do not need to support NSF through specific packet negotiation.
- D. After the NSF is enabled, the router performs the master/slave switchover. The routing table and the forwarding table remain unchanged. Therefore, traffic is not lost during the GR time.
Answer: B,D
NEW QUESTION 44
BGP 4+ is running between the two routers. The neighbor relationship is normal. However, the BGP routing table of the local router does not have any neighbor routing entries. Which of the following is the possible reason?
- A. The next hop address of the BGP routing entry is unreachable.
- B. Peer ignore configured on the peer
- C. The peer is configured with Active-route-advertise
- D. The routing entries of the peer BGP routing table are non-optimal.
Answer: C,D
NEW QUESTION 45
Which of the following statement about the R2 routing entry is correct?
- A. 2022::/64 router will appear in the IP routing table.
- B. 2019::/64 router will appear in the IP routing table.
- C. 2020::/64 router will appear in the IP routing table.
- D. 2021::/64 router will appear in the IP routing table.
Answer: A,B,C
NEW QUESTION 46
Through the following displayed command, you can determine that switch loop fault is caused by ().
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION 47
Regarding the OSPFv3 protocol, which of the following description is wrong?
- A. Multiple instances can be run in the same OSPFv3 process on the same interface.
- B. When sharing a router, each OSPFv3 process runs independently.
- C. Support multiple instances running on a single link
- D. The Instance ID field is included in the OSPFv3 packet header.
Answer: A
NEW QUESTION 48
The following topology and configuration are available. Which of the following statements are correct? (Multiple Choice)
- A. There is no route with the destination network segment being 10.0.2.2/32 on R1.
- B. There is a route with the destination network segment being 10.0.2.2/32 on R1.
- C. There is no route with the destination network segment being 10.6.3.3/32 on R1.
- D. There is a route with the destination network segment being 10.6.3.3/32 on R1.
Answer: B,C
NEW QUESTION 49
Which of the following statements are wrong about cross-domain MPLS VPN? (Multiple Choice)
- A. When the public network label is LDP-based, the Layer 3 label is required for the cross-domain VPN-OptionC scheme 2 packet forwarding process.
- B. For the cross-domain VPN-OptionB mode, the two ASBRs are connected to each other through multiple interfaces (including sub-interfaces). Each interface is associated with a VPN. Each ASBR-PE treats the peer as a CE.
- C. For the cross-domain VPN Option A mode, the route between the two ASBRs is a normal PV4 route.
- D. For cross-domain VPN-Option B mode, an MP-EBGP neighbor relationship needs to be established between the two ASBRs.
Answer: A,B
NEW QUESTION 50
As shown in the figure, the AS100 has two paths to the AS400. By default, the best route is transmitted from the AS200. It is known that the path to the AS400 through the AS300 is better. Therefore, the following configuration is performed on the R2. After the configuration is complete, the optimal route is not changed. Which of the following operations can make the configuration take effect?
[R2] ip as-path-filter 1 permit ^400$
R2] route-policy med permit node 10
r2-route-policy] if-match as-path-filter 1
Ir2-route-policy] apply cost 20
- A. Configure deterministic-med in the BGP process of R2.
- B. Configure compare- different-as-med in the BGP process of R2.
- C. Configure deterministic-med in the BGP process of R1.
- D. Configure compare- different-as-med in the BGP process of R1.
Answer: D
NEW QUESTION 51
In RSTP, which port can provide the backup path to reach the root node of the spanning tree? What status is the port in?
- A. Designated port and Listening status
- B. Alternate port and Forwarding status
- C. Alternate port and Discarding status
- D. Root port and Listening status
- E. Alternate port and Learning status
Answer: C
NEW QUESTION 52
When running PIM-SM between multicast routers need to elect a DR to be responsible for sending and receiving multicast data at the source or member end, what is the correct description of the DR election rule?
- A. The PIM router with a low DR priority value is elected as the DR.
- B. The PIM router with a long interface mask is elected as the DR.
- C. The router with a small IP address is elected as a DR.
- D. Compare the DR priorities first, if the priorities are the same, you need to compare the IP addresses of the PIM router interface to elect DRs.
Answer: D
NEW QUESTION 53
For Layer 2 VPN technology, which of the following statements are correct? (Multiple Choice)
- A. BGP EVPN solves the problem of MAC address drift and multi-tenancy that VPLS cannot support.
- B. BGP EVPN supports tenant isolation, multi-homing and broadcast suppression
- C. The VPLS configuration is highly complex. The Layer 2 network transparently transmits BUM packets.
- D. VPLS is a widely used technology on the live network. It can provide Layer 3 packet transparent transmission and achieve multi-point access.
Answer: A,B,C
NEW QUESTION 54
If you run PIM-SM on a multicast network, you need to construct a multicast forwarding tree between the multicast source and the receiver for the receiver to receive multicast data, so the following descriptions are about the constructed multicast forwarding tree, which are the correct options? (Multiple Choice)
- A. The RPT tree is constructed between the multicast source and the RP.
- B. The RTP tree is constructed between the RP and the receiver.
- C. The SPT tree is constructed between the multicast source and the RP.
- D. The SPT tree is constructed between the RP and the receiver.
Answer: B,C
NEW QUESTION 55
Regarding the Stub area and the NSSA area of OSPF, the wrong statement of the following is _____.
- A. Both the Stub area and the NSSA area are allowed to inject Type 3 LSA.
- B. Type 7 LSA is not allowed in the Stub area, but Type 7 LSA is allowed in the NSSA area.
- C. Type 5 LSA is not allowed in the Stub area, but Type 5 LSA is allowed in the NSSA area.
- D. Stub area and NSSA area are not allowed to inject Type 4 LSA.
Answer: C
NEW QUESTION 56
As shown in the figure, in the IPv4 and IPv6 environment, the SEL field in the ISIS NET address always takes the value 00.
- A. False
- B. True
Answer: B
NEW QUESTION 57
Non-Stopping-Forwarding (NSF) and Non-Stopping Routing (NSR) are two solutions for high reliability. The following statements which are correct? (Multiple Choice)
- A. NSF routers do not need to negotiate support NSF through specific packet.
- B. After the NSR is enabled, if the main control board fails when the service batch backup is not completed, the NR switch cannot be completed.
- C. NSR routers need to negotiate support NSR through specific packet.
- D. After the NSF is enabled, the router performs the master/slave switchover. The routing table and the forwarding table remain unchanged. Therefore, traffic is not lost during the GR time.
Answer: B,D
NEW QUESTION 58
The following statements about the VRRP protocol which are correct?
- A. The owner of the Mater IP address has VRRP priority of 255, so the priority range that can be configured is 0-254.
- B. VRRPv3 does not support authentication, while VRRPv2 supports authentication.
- C. Both VRRPv2 and VRRPv3 support authentication.
- D. VRRPv2 is only applicable to IPv4 networks, and VRRPv3 is only applicable to IPv6 networks.
Answer: B
NEW QUESTION 59
About the description of the process of sending and receiving data frames in the Access mode of the switch interface, which is correct?
- A. In the Access mode, the VLAN tag of the data frame will be stripped off when sent.
- B. Directly discards when receiving a tagged data frame in Access mode
- C. When the data frame enters the switch interface, the switch learns the destination MAC address in the data frame.
- D. Only receive unlabeled data frames in Access mode
Answer: A
NEW QUESTION 60
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