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Huawei H12-221-ENU Exam Syllabus Topics:

Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:

Question 1

Which of the following description about the special area of OSPF is wrong?

A. The role of the Totally Stub Area is to allow the LSA3 default route advertised by the ABR, which does not allow AS external routes and inter-area routes. The difference between
B. The difference between the Totally Stub area and the NSSA area is that the area does not allow inter-domain routing.
C. Stub Area and Totally Stub area is that this area allows inter-domain routing.
D. The difference between the NSSA Area and the Stub area lies in that this area allows the introduction of external routes to the AS. The ABR advertises the LSA7 to advertise this area to the local area.

Question 2

About this section configuration, which of the following descriptions are correct? (Multiple choice)

A. region-name RegionA command configures the MST region name of the switch. By default, the MST region name of the switch is the MAC address of the switch.
B. Use the instance 2 vlan 3 command is used to map VLAN 3 to MST Instance 2. All the default VLANs are mapped to Instance 1.
C. The active region-configuration command is used to activate the configuration of the MST region. If you do not perform this operation, the configured domain name, VLAN mapping table, and MSTP revision level do not take effect.
D. The revision-level 1 is used to configure the MSTP revision level. The value range is 0 to 65535. By default, the MSTP revision level is 1.
E. stp mode mstp command is used to enable the MSTP feature of the switch. By default, MSTP is switched on.

Question 3

Which types of metrics are supported by IS-IS protocol?

A. Tos
B. wide
C. default
D. Narrow

Question 4

In a network environment, there are both switches that run RSTP and run STP. What is the phenomenon that the network will appear? (Multiple choice)

A. RSTP can interoperate with STP, but RSTP advantages such as fast convergence will be lost at this time.
B. If it is a Huawei switching device, STP will be switched to RSTP mode, and after the switching device that can run RSTP is configured to be evacuated from the network, the switching device running STP can be migrated back to the RSTP mode.
C. RSTP and STP are not interoperable and will perform independent operations.
D. If it is a Huawei switching device, RSTP will be switched to STP mode, and the switching device running STP can be configured to be evacuated from the network. After this, RSTP switching devices can be migrated back to the RSTP mode.

Question 5

The correct description of the prefix list is? (Multiple choices)

A. The prefix list is used to filter IP prefix. It also can match the prefix number and prefix length at the same time.
B. The prefix list can't be used for packet filtering.
C. Prefix list can be used for packet filtering.
D. The prefix list is used to filter IP prefix. It can't match prefix number and prefix lengths at the same time.

Solutions: