Understanding functional and technical aspects of Ethernet Technology

The following will be asked from you in the Huawei H12 222 exam dumps:

• Hardware structure and working principles of Huawei switches
• Basic principles and implementation of MPLS VPN: single-domain MPLS VPN principles; implementation and application of OSPF in MPLS VPN
• STP/RSTP/MSTP
• MSTP principles and configuration
• Inter-VLAN routing, Super VLAN, MUX VLAN, ARP proxy, and VLAN mapping
• VRP software features of Huawei switches
• 802.1Q encapsulation and implementation of VLAN in Huawei products
• STP principles and configuration
• QinQ principles, configuration, and implementation
• Ethernet evolution process, port auto-negotiation technology, port trunking, port mirroring, working principles of a Layer 2 switch, and working principles of a Layer 3 switch VLAN
• MPLS principles and implementation: MPLS frame format and encapsulation, MPLS data forwarding process, LDP neighbor discovery and session establishment, LDP label management, and MPLS loop avoidance
• MPLS VPN fault diagnosis: troubleshooting roadmap and debugging methods of control plane faults; troubleshooting roadmap and debugging methods of data plane faults Huawei Ethernet Switches
• Network Access Technology
• 802.1X access authentication techniques and principles
• GVRP principles, configuration, and implementation
• DHCP principles and extended switch feature, DHCP snooping MPLS VPN
• RSTP principles and configuration

Reference: https://support.huawei.com/learning/Certificate!toExamOutlineDetail?lang=en&nodeId=Node1000003919

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Sample Questions

Agile Controller, as a network resource automation control system, can provide unified policy engine and implement unified access strategy in the whole organization. It can realize based on user identity, access time, access location, terminal type, terminal source and access mode (For shot: 5W1H) certification and authorization.

• False
• True

Adopting QoS in the network, while improving the service quality of certain kinds of business, it will certainly damage the service quality of other business.

• False
• True

What is the configuration command that associates VRRP with BFD?

• vrrp vrid 1 track bfd-session-name 1 reduced 100
• bfd-session vrrp vrid 1 track session-name 1 reduced 100
• track vrrp vrid 1 bfd-session session-name 1 reduced 100
• vrrp vrid 1 track bfd-session session-name 1 reduced 100

When configuring a RADIUS server template on Huawei switches, which of the following options are optional configuration parameters?

• Authentication server address and port
• RADIUS automatically detects users
• shared-key
• Accounting server address and port

In MPLS, it has different ways for label distribution when using LDP, the following descriptions about LDP lable distribution way, which are wrong? (Multiple Choice)

• The LDP label control can mark by Odered manner
• Using a standalone mode, the LSR can send a label mapping to the upstream LSR and must wait for a label mapping message from the next hop of the LSR.
• Using an ordered manner, when an LSR is the originating node of a route, the LSR does not need to wait for the next-hop tag mapping to send the mapping to the upstream.
• LDP label control can not use the independent way to mark.

There is a difference between RSTP protocol and STP protocol, in RSTP protocol when defining port status, which port states are defined?

• Discarding state
• All of the above
• Learning state
• Forwarding state

When configuring and achieving STP protocol, each running STP agreement's switch in the network all have a unique ID, what is the ID?

• six bytes length's MAC address
• two bytes length's switch priority and the six-byte length's MAC address
• two bytes length's switch priority
• six bytes length's switch priority and the six-byte length's MAC address

When running the STP agreement on the switch, the switch just being started is in the initialization stage and thought itself is the root switch, which of this time's BPDU parameter settings is correct? (Please select 3 answers)

• Designated Root is the switch itself
• Designated Port is 0
• Designated Cost is 0
• Designated Bridge is the switch itself

The following is a switch configuration command,

(SWB) STP enable (SWB) STP mode STP (SWB) the STP priority 8192

Which description is correct? (please select 3 answers)

• stp priority commands is used to configure the switch priority, by default, the switch priority value is 32768.
• stp enable is used to start switch's STP function, by default, the switch's STP function is in the enabled function.
• By default, Huawei switches operating mode is the traditional STP mode.
• the priority of the switches, the range is 0 - 61440, the step length is 4096, namely the switch can set 16 priority values, such as 0, 4096, 8192.

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