(2021) H12-221-ENU Dumps and Practice Test (597 Questions)
Guide (New 2021) Actual Huawei H12-221-ENU Exam Questions
NEW QUESTION 108
The router receives two BGP routes with the following attributes. Select the optimal route based on the BGP selection rules.
Network NextHop MED LocPrf PrefVal Path/Ogn
M192168 10.1.1.1 30 0 100 i
N192168 10.1.1.2 20 0 100 200i
- A. The optimal route is route M, because its AS_Path is shorter than route N.
- B. The optimal route is route M, because its MED is larger than route N.
- C. The optimal route is route N, because its MED is smaller than route M.
- D. The optimal route is route N, because its AS_Path is longer than route N.
Answer: A
NEW QUESTION 109
The state of the BGP neighbor establishment process exists as follows. The sequence of state machines experienced by establishing a successful connection is:
- A. 1-3-5-2-4
- B. 3-1-2-5-4
- C. 3-1-5-2-4
- D. 3-5-1-2-4
Answer: C
NEW QUESTION 110
By default, the SSM group is in the range of 232.0.0.0/8. If you want to modify the SSM group range, which of the following is correct?
- A. Configure the ssm-policy acl-number in the PIM view.
- B. Configure the ssm-policy advanced-acl-number in the PIM view.
- C. Configure the ssm-policy acl-number in the system view.
- D. Configure the ssm-policy advanced-acl-number in the system view.
Answer: A
NEW QUESTION 111
MSTP is also called multiple spanning tree protocol. What problems can be solved in a single spanning tree network through MSTP? (Multiple Choice)
- A. Suboptimal Layer 2 path.
- B. Part of the Vlan path is inaccessible.
- C. Unable to use traffic sharing.
- D. Improve business reliability.
Answer: A,B,C
NEW QUESTION 112
Which of the following commands can be used to leak level-2 area routes to the level-1 area?
- A. import-route iris level-2 into level-1
- B. advertise isis level-2 into level-1
- C. import isis level-2 into level-1
- D. export isis level-2 into level-1
Answer: A
NEW QUESTION 113
224.0.0.6 is the listening address of ALLD Router, 240.0.0.5 is the listening address of ALLSPFRouters.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 114
The description of LACP protocol, which is correct? (Multiple choices)
- A. The device at both ends determines the active interface based on the passive interface LACP priority and interface ID.
- B. Interact with the peer through the Link Aggregation Control Protocol Data Unit (LACPDU).
- C. Based on the IEEE802.3au standard.
- D. The device at both ends determines the active end based on the system LACP priority and system ID.
Answer: B,D
NEW QUESTION 115
When the MTUs of the interconnected interfaces of the two routers in the broadcast network do not match, Which of the description of the changes in the state of the neighbor relationships between the two routers is correct?
- A. The neighbor relationship between two devices can enter Full.
- B. The neighbor relationship between the two devices stays at Exstart.
- C. The neighbor relationship status of the two devices stays at 2-way.
- D. The status of the neighbor relationship between the two devices stays in the Init state.
Answer: A
NEW QUESTION 116
In PIM-SM, the description of the RP, which is wrong?
- A. Handling multicast group member join requests
- B. Only the last hop router knows the RP address.
- C. Processing multicast source DR registration information
- D. Must be specified manually
Answer: B,D
NEW QUESTION 117
BGP connection-establishment. When no load balancing is configured, the BGP speaker advertises only one best route in the BCP routing table to the neighbor.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 118
When using routing policy for route filtering, which will be denied when the router prefix matching the following IP-Prefix? (Multiple Choice)
- A. 1.1.1.2/16
- B. 1.1.1.1/24
- C. 1.1.1.1/26
- D. 1.1.1.1/32
Answer: B,C,D
NEW QUESTION 119
Which of the following description about OSPF default route is wrong?
- A. Due to the OSC management by the OSPM, the Type 5/7 default route has a higher priority than the Type 3 route.
- B. OSPF default route can be advertised by the ABR to Type3 Default Summary LSA to guide routers in the area to forward packets between areas.
- C. When the router does not have a precisely matched route, it can forward packets through the default route.
- D. OSPF default route is that ASBR can advertise Type 5 external default ASE LSAs or Type 7 external default NSSA LSAs to instruct the routers in the autonomous system (AS) to forward the packets outside AS.
Answer: A
NEW QUESTION 120
Regarding OSPF multi-process, which is wrong?
- A. An interface of a router can only belong to one OSPF process.
- B. Routing interaction between different OSPF processes is equivalent to the routing interaction between different routing protocols.
- C. Multiple OSPF processes can be running on the same router. They do not affect each other and are independent of each other.
- D. The concept of OSPF multi-process has a global significance.
Answer: D
NEW QUESTION 121
Which methods can modify the interface cost of OSPF? (Multiple choice)
- A. In the interface view, run the bandwidth-reference command.
- B. In the ospf view, run the bandwidth-reference command.
- C. In the ospf view, run the interface cost command.
- D. In the interface view, run the ospf cost command.
Answer: B,D
NEW QUESTION 122
Which of the following description of the working mode of PIM is wrong?
- A. PIM-SSM
- B. PIM-DM
- C. PIM-SM
- D. PIM-ASM
Answer: D
NEW QUESTION 123
In the PIM-SM protocol, the DR connected to the multicast receiver is charge of sending a unicast Register message to the RP.
- A. False
- B. True
Answer: A
NEW QUESTION 124
Which of the following options meets the following ACL conditions?
- A. 10.1.1.0/24
- B. 10.0.0.0/8
- C. 10.1.0.0/16
- D. 10.1.1.1/32
Answer: C
NEW QUESTION 125
In different scenarios, RSTP provides different protection functions, which is wrong? (Multiple choice)
- A. After the TC-BPDU attack defense function is enabled, the number of times that the switching device processes TC BPDU can be configured.
- B. After the BPDU guard function is enabled on the switch, if the edge port receives the RST BFDU, the edge port will be set to non-edge port and the spanning tree calculation will be performed again.
- C. Root protection is configured on the root port.
- D. Loop protection is effective on the specified port configuration.
Answer: C,D
NEW QUESTION 126
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