Huawei H12-221_V2.5-ENU Free Online Test For Checking Real H12-221_V2.5-ENU Exam Questions

Getting the most popular exam preparation materials online to prepare for HCIP-Routing & Switching V2.5 certification is the most effective way to achieve the success. Real Huawei H12-221_V2.5-ENU exam questions are available at HCDAtest.com to help you prepare for HCIP-Routing & Switching-IERS V2.5 H12-221_V2.5-ENU exam well.

HCDAtest H12-221_V2.5-ENU exam questions have been verified by the top team, who make sure that you can pass HCIP-Routing & Switching-IERS V2.5 certification exam successfully. We have Huawei H12-221_V2.5-ENU free online test to help you check the real HCIP-Routing & Switching-IERS V2.5 exam questions. Below are 25 free questions, test before getting the HCDAtest.com H12-221_V2.5-ENU exam questions. Any other questions, just contact us freely: [email protected].

Begin to Test:

1. After the RPT tree is established, which of the following about the description of the SPT switch is wrong?

RPT tree cannot be forwarded for a long time

All multicast traffic passes through the RP router, which may become a bottleneck for data forwarding

SPT has the shortest path and better forwarding performance

RPT tree cannot support large traffic forwarding

Question 1 of 25

2. The scale of a certain network is relatively large, some switches run MSTP, and the other part runs RSTP. When a switch running MSTP protocol detects that the switch adjacent to the port is running in RSTP mode, what mode does the MSTP protocol switch work in at this time?

STP mode

RSTP mode

MSTP mode

Uncertain

Question 2 of 25

3. Which of the following description of the special area of OSPF is wrong?

The role of TOTALLY STUB AREA is to allow the LSA3 default route sent by ABR, and not allow autonomous system external routes and inter-area routes

The difference between STUB AREA and TOTALLY STUB area is that this area allows inter-domain routing

The difference between NSSA AREA and STUB area is that this area allows the import of autonomous system external routes, and the ABR advertises LSA7 to the area.

The difference between TOTALLY STUB area and NSSA area is that this area does not allow inter-domain routing

Question 3 of 25

4. Which of the following is not the basic network type defined by OSPF?

Virtual Link

P2MP

BROADCAST

NBMA

Question 4 of 25

5. Which command can be used to view OSPF neighbor status information?

display ospf peer

display ip ospf peer

display ospf neighbor

display ip ospf neighbor

Question 5 of 25

6. According to RFC 2328, with regard to a router running OSPF, the correct description of the process from the beginning to the formation of an adjacency relationship with its neighbors is:

Down, Init, 2-way, Exchange, Exstart, Loading, Full

Down, Exstart, 2-way, Init, Exchange, Loading, Full

Down, Init, Exstart, Exchange, Loading, Full

Down, Init, 2-way, Exstart, Exchange, Loading, Full

Question 6 of 25

7. The following protocol using SPF algorithm is:

RIPV1

RIPV2

OSPF

BGP

Question 7 of 25

8. Regarding the Register message, which of the following statement is wrong?

The function of the Register message is to enable the RP router to learn the multicast source information

The Register message is sent unicast to the RP router, not multicast

The Register message is sent by the source DR router

The Register message is multicast and sent to the RP router

Question 8 of 25

9. Which of the following about the description of the BGP state machine is wrong?

In IDIE state, BGP rejects any incoming connection request, which is the initial state of BGP

In the ACTIVE state, BGP will try to establish a TCP connection, which is the intermediate state of BGP

In the ESTABLISHED state, BGP peers can exchange UPDATE messages, ROUTE-REFRESH messages, KEEPALIVE messages and NOTIFICATION messages

The status of both BGP peers must be OPENCONFIRM, so that the BGP neighbor relationship can be established, and the two parties exchange routing information through UPDATE messages.

Question 9 of 25

10. Which of the following description about the characteristics of the prefix list is wrong?

The prefix list can be used to filter IP prefixes

The prefix list can match the prefix number and prefix length.

The prefix list has a stronger matching function for routing prefixes than the access control list.

The prefix list can be used for packet filtering.

Question 10 of 25

11. Which of the following description of AS-PATH is wrong?

AS-PATH refers to the list of AS experienced by BGP routing in the transmission path

AS-PATH is a very important and recognized mandatory attribute in BGP

BGP will not accept routes with this AS-NUMBER in the AS-PATN attribute

When there are two or more routes to the same destination in the router, these routes can be compared with each other through this attribute. The longer the AS-PATH, the more preferred the route.

Question 11 of 25

12. Regarding port isolation, which of the following statement is wrong?

Port isolation is an access control security control mechanism between switch ports.

The client hopes that PCs connected to different ports cannot communicate with each other and can be achieved through port isolation.

Port isolation can be isolated based on VLAN.

Port isolation is the isolation of the physical layer.

Question 12 of 25

13. In different scenarios, RSTP provides different protection functions. What is correct about this statement?

After the BPDU protection function is activated on the switching device, if the edge port receives the RST BPDU, the edge port will be set as a non-edge port and the spanning tree calculation will be performed again

The designated port with ROOT protection function enabled, its port role can only be maintained as the designated port

Start the root protection port. When the port receives a better rst bpdu, the port will enter the DISCARDING state and will not forward packets. If the port does not receive a better RST BPDU within a period, it will automatically return to the normal FORWARDING state.

After the anti-TC-BPDU packet attack function is enabled, the number of times the switching device processes TC BPDU packets within a unit time can be configured.

Question 13 of 25

14. The use of the access control list is specified by the range of numbers. Which of the following description is wrong?

The number range of the basic access control list is: 3000-3999.

The number range of Layer 2 ACL is 4000-4999.

The number range of the basic access control list is: 2000-2999.

The number range of the advanced access control list is: 3000-3999.

Question 14 of 25

15. In the static LACP mode, the active interfaces selected by the devices at both ends must be consistent, otherwise the link aggregation group cannot be established. But you can specify the true end as the active end, and the other end only needs to select the corresponding active interface according to the high-priority end.
So how to choose the active end in static LACP mode?

Select the end with the smaller system LACP priority value as the active end in the devices at both ends. If the system LACP priority is the same, select the end with the smaller IP address as the active end.

Select the end with the smaller MFC address value as the active end in the devices at both ends.

Select the end with the higher system LACP priority value as the active end in the devices at both ends. If the system LACP priority is the same, select the end with the larger MA address as the active end.

Select the end with the smaller system LACP priority value as the active end in the devices at both ends. If the system LACP priority is the same, select the end with the smaller MAC address as the active end.

Question 15 of 25

16. Which of the following description of the rules for routing filtering is wrong?

Route filtering can filter routes in the outbound direction, and both routing information and link state information can be filtered.

Route filtering can filter routes in the inbound direction. For the link state routing protocol, it just doesn't add the route to the routing table.

Route filtering can filter routes imported from other routing protocols, but it can only filter in the outbound direction.

You can use filter-POLICY for filtering, or iP-prefix for filtering.

Question 16 of 25

17. What is the correct description of the OSPF calculation shortest path tree stage?

The first stage calculates the stub network segment, and the second stage calculates the router node and the TRANSIT network segment.

The STUB network segment is calculated in the first stage, and the routing node is calculated in the second stage.

The first stage calculates the routing node and transit network segment, and the second stage calculates the stub network segment.

The routing node is calculated in the first stage, and the stub network segment is calculated in the second stage.

Question 17 of 25

18. Regarding the description of the Hello message in PIM-SM, the error is:

In the PIM-SM network, the newly started multicast router needs to use Hello messages to discover neighbors and maintain neighbor relationships.

The routers periodically use Hello messages to keep in touch.

Elect the DR designated router in the multi-router network segment through the Hello message.

The HELLO message is sent to the multicast address 224.0.0.5

Question 18 of 25

19. What is the role of the DETAIL-SUPPRESSED option of the AGGREATE command?

Suppress the generated aggregated route from delivering the IP routing table

Suppress the delivery of aggregated detailed routes to the IP routing table

Advertise only aggregated routes to other BGP neighbors

Advertise aggregated routes and detailed routes to other BGP neighbors

Question 19 of 25

20. Which one of the following tools is used to filter routing information and set routing attributes for the routing information that passes the filter?

AS-PATH-FILTER

IP-PREFIX

ROUTE-POLICY

POLICY-BASED-ROUTE

Question 20 of 25

21. In the IS-IS broadcast network, which multicast MAC address does the Level-1 router use as the destination address for sending IIH?

0180-C200-0014

0180-C200-0015

0180-C200-0000

0100-5E00-0001

Question 21 of 25

22. Which of the following descriptions about LSA3, LSA4 and LSA5 are correct?

LSA3 will not change after traversing different areas, while LSA4 and LSA5 will change

LSA4 will not change after traversing different areas, while LSA3 and LSA5 will change

LSA5 will not change after traversing different areas, while LSA3 and LSA4 will change

LSA3, LSA4 and LSA5 will not change after traversing different areas

Question 22 of 25

23. In the BGP routing rules, the priority judgment principle for the ORIGIN attribute is:

EGP>LNCOMPLETE>IGP

IGP>LNCOMPLETE>EGP

IGP>EGP>LNCOMPLETE

LNCOMPLETE>EGP>IGP

Question 23 of 25

24. In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending IIH?

0180-C200-0014

0180-C200-0016

0180-C200-0015

0100-5E00-0002

Question 24 of 25

25. Which of the following description is wrong about verifying whether a received HELLO message is legal?

If the network type of the received port is broadcast, point-to-multipoint or NBMA, the Network Mask field in the received Hello message and the interface end may be inconsistent

If the network type of the receiving port is a point-to-point type or a virtual link, the Network Mask field is not checked

The RouterDeadInteral field in the received Hello message must be consistent with the configuration of the receiving port

The E-bit in the Options field of the received Hello message must be consistent with the configuration of the relevant area

Question 25 of 25

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