Pass H12-221-ENU Exam in First Attempt Guaranteed 2021 Dumps!
H12-221-ENU Dumps Full Questions - Exam Study Guide
NEW QUESTION 340
Which of the following description is correct about the OSPF neighbor state machine?
- A. In the Init state, the router has received Hello packets from the neighbor and found itself in the neighbor list of the neighbors sending Hello packets.
- B. DROther will eventually form a null state
- C. Attempt status only appears on NBMA and P2MP networks
- D. In the 2-way state, two-way communication has been established, but no neighbor relationship has been established with the neighbor.
Answer: D
NEW QUESTION 341
OSFF only has authentication information in Hello packets, and OSFF supports MD5 cipher text authentication.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 342
Regarding the NSSA command description, the error is:
- A. The no-import-route parameter is used to prevent the external route of the AS from being imported into the NSSA area in the form of Type-7.
- B. The set-n-bit parameter indicates the flag for setting the N-bit bit in the DD insulation, which is an optional field in the DD.
- C. The no-summary parameter indicates that the fourth type of LSA is not advertised to the area.
- D. The default-route-advertise command is used to advertise the default route to the common OSPF area.
Answer: C
NEW QUESTION 343
Which are the reasons RSTP converges faster than STP? (Multiple choices)
- A. The concept of an edge port was introduced in RSTP. An edge port does not receive processing configuration BPDUs and does not participate in RSTP operations. It can change from Disable to Forwarding state.
- B. If one of the root ports in the network fails, the optimal alternate port in the network will become the root port and enter the Forwarding state.
- C. When a port receives an RST BPDU from an upstream designated bridge in RSTP, the port compares the stored RST BPDU with the received RST BPDU.
- D. If a designated port in the network fails, the optimal alternate port in the network becomes the designated port and enters the Forwarding state.
- E. In RSTP, after a port is elected as a designated port, it first enters the Discarding state, and then quickly enters the Forwarding state through the Proposal/Agreement mechanism.
Answer: A,B,C,E
NEW QUESTION 344
About the default route of each protocol, which of the following description is wrong?
- A. Static routes can be used to deliver default routes.
- B. OSPF cannot deliver default routes.
- C. BGP can deliver default routes.
- D. RIP can deliver default routes.
Answer: B
NEW QUESTION 345
In the network shown in the figure, three switches run RSTP. The configuration is as shown in the figure.
According to the configuration in the figure, determine the root switch as:
- A. SWC
- B. Unable to determine
- C. SWB
- D. SWA
Answer: D
NEW QUESTION 346
A route-policy may have multiple nodes. Different node numbers are identified by sec-number. The relationship between the various parts of different seq-numbers is "OR".
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 347
The following description of Local-Preference, which is correct?
- A. The default value of Local-Preference is 100.
- B. Local-Preference is recognized as mandatory.
- C. Local-Preference affects the traffic entering the AS.
- D. Local-Preference can be spread across AS.
Answer: A
NEW QUESTION 348
A switch runs MSTP. The relevant configuration information is shown in the figure. According to the configuration of the command, it indicates that for Instance 1, the role of the switch is:
- A. Cannot judge
- B. Non-root switch
- C. Root switch
- D. Slave switch
Answer: C
NEW QUESTION 349
About the description of connection type of Router-LSA, which is wrong?
- A. StubNet describes a connection from this router to a Stub network segment.
- B. P2MP describes the connection from a local router to multiple neighboring routers.
- C. Point-to-Point describes a point-to-point connection from this router to a neighboring router.
- D. TransNet describes the connection from this router to a Transit network segment.
Answer: B
NEW QUESTION 350
Which of the following OSPF state transitions are possible? (Multiple Choice)
- A. Down->2-Way
- B. Init->2-Way
- C. Down->Init
- D. Loading->Full
Answer: B,C,D
NEW QUESTION 351
What is the role of the detail-suppressed keyword in the Aggreate command?
- A. Advertise Aggregate Routes and Detail Routes to Other BGP Neighbors
- B. Only advertise aggregated routes to other BGP neighbors
- C. Suppress the IP routing table delivered by the summarized detailed route
- D. Suppressing the Generated Aggregate Routes to Advertise the IP Routing Table
Answer: B
NEW QUESTION 352
Which of the following descriptions is correct about BGP MED? (Multiple Choice)
- A. By default, BGP routing rules can perform MED comparisons on routes from different autonomous systems.
- B. The default value of BGP route MED is 0.
- C. By default, if there is no MED value in the route attribute, press 0 to process. If the bestroute med-none-as-maximum command is configured, the MED is processed as the maximum value of 4294967295.
- D. In the BGP routing rule, the priority of the MED is lower than AS-Path, Preferred-value, Local-Preference, and Origin.
Answer: B,C,D
NEW QUESTION 353
IGMPv1 contains only two message types: membership query and membership report.
- A. True
- B. False
Answer: A
NEW QUESTION 354
The following is a description of the routing policy supported by OSPF route filtering. Which is wrong?
- A. as-path filter
- B. route-policy
- C. access-list
- D. prefix-list
Answer: A
NEW QUESTION 355
Which of the following descriptions of the OSPF protocol is wrong?
- A. The Link State ID described in the third type of LSA is the router-id of the ABR.
- B. It is only allowed to advertise routing information between the backbone area and the non-backbone area. It is not allowed to directly advertise routing information between non-backbone areas.
- C. Each OSPF router uses only one Router LSA to describe the local active connection status of an area.
- D. There are four types of connections described by the Router LSA: P2P/TransNet/StubNet/Virtual Link.
Answer: C
NEW QUESTION 356
The name of the assertion mechanism in PIM-SM is:
- A. BSR/RP mechanism
- B. Assert mechanism
- C. Join/Prune mechanism
- D. Register mechanism
Answer: B
NEW QUESTION 357
The following is part of the output information of the router Huawei. For the output information, which description is wrong?
<Huawei> display pim interface gigabitethernet 1/0/0 verbose
VPN-Instance: public net
Interface: GigabitEthernet1/0/0, 10.1.1.1
PIM version:2
PIM mode: Sparse
PIM state: up
PIM DR: 10.1.1.2
PIM DR Priority (configured): 1
PIM neighbor count:1
PIM hello interval: 30 s
- A. The router gigabitethernet 1/0/0 interface runs PIMv2
- B. The PIM status of the gigabitethernet 1/0/0 interface of the router is UP.
- C. PIM-SM running on the gigabitethernet 1/0/0 interface of the router
- D. The DR on this interface is 10.1.1.1
Answer: D
NEW QUESTION 358
After configuring multicast load sharing, which of the following may occur? (Multiple choice)
- A. After the multicast load balancing is configured, load balancing on the equal-cost routes is guaranteed.
- B. If there is no unicast equal-cost route, multicast load sharing can also play a role.
- C. When using load balancing by group, load balancing on equal-cost routes cannot be guaranteed due to the limitation of the hash algorithm itself.
- D. When the load on the equal-cost route is equal, the traffic may be unbalanced. This is because the group load balancing is based on the multicast routing entry, not based on the multicast data packet.
Answer: C,D
NEW QUESTION 359
......
HCNP-R&S Free Certification Exam Material from RealValidExam with 597 Questions: https://www.realvalidexam.com/H12-221-ENU-real-exam-dumps.html
