After the project delivery, the O&M expenses are continuously generated. Which of the following items are the expenses generated during the O&M? (Choose all that apply.)

Equipment depreciation expenses

When a large number of IP phones and WLAN APs exist on a network, which of the following switches is used?

Switches supporting STP edge ports

To improve STP running stability, a network administrator wants to configure some STP features or protection mechanism on switches. Which of the following configuration roadmaps is correct?

Configure root protection on the user access port to ensure that the user does not connect to a switch with a higher priority.

Configure the user access port as an edge port to prevent the user from connecting to the switch on this port.

Configure root protection on the user access port to ensure that the user does not connect to a switch with a higher priority.

Configure loop protection on positions where loops have occurred so that loops are always blocked.

Configure BPDU protection so that the switch checks the validity of each received BPDU to prevent attacks of forged BPDUs.

Huawei's enterprise network NMS eSight has three editions: simplified, standard, and professional. Unlike the standard edition, which of the following features is provided by the professional edition?

Support hierarchical management model.

Provide a database backup tool.

Support management of the WLAN and MPLS VPN.

Support hierarchical management model.

Which of the following operations is performed in the risky operation process?

Implementation and result feedback

Which of the following statements regarding the operation window time for a software upgrade is false?

Only network maintenance personnel need to be notified of the operation window time, while the customer does not.

It is determined by the accepted service interruption duration.

It must be longer than the upgrade execution time.

Troubleshooting time must be reserved.

Only network maintenance personnel need to be notified of the operation window time, while the customer does not.

Which of the following statements regarding the device running check is true?

You can run the display device command to check the running status of a board. If the board is online, the value of Online should be Present.

You can run the display memory-usage command to check the memory usage of the device. If the value of Memory Using Percentage exceeds 80%, pay attention to the memory usage.

You can run the display device command to check the running status of a board. If the board is online, the value of Online should be Present.

You can run the display fan command to check the fan status. If the value of Present is NO, the fan is in normal state.

You can run the display ftp-server command to check FTP ports. The FTP ports not in use should be recorded.

Which of the following statements regarding the software and configuration backup is true?

Backup is used to restore network functions in extreme cases.

The software version needs to be backed up for multiple times for the same product and the same version.

Licenses do not need to be backed up.

After the device configuration changes, the configuration file does not need to be backed up.

Backup is used to restore network functions in extreme cases.

Ethernet supports broadcast. Once a network loop occurs, this simple broadcast mechanism will cause catastrophic consequences. Which of the following symptoms may be caused by a loop? (Choose all that apply.)

Users cannot log in to the device remotely.

The display interface command output shows a large number of broadcast packets received on an interface.

A lot of ICMP packets are lost in ping tests.

Users cannot log in to the device remotely.

The display interface command output shows a large number of broadcast packets received on an interface.

A lot of ICMP packets are lost in ping tests.

In a complex network environment containing finance, OA, production, and more service systems, which of the following items is the first concern for troubleshooting?

Data flow direction of each service system

Which of the following is the purpose of access security optimization?

To achieve secure user access control.

To ensure that sensitive management information will not be intercepted.

To prevent or reduce external network attacks and harm.

To ensure secure access to key services.

To achieve secure user access control.

Which of the following are migration difficulties? (Choose all that apply.)

Achieving optimal risk prevention

Formulating a complete migration solution

Carrying out the migration smoothly

Achieving optimal risk prevention

Formulating a complete migration solution

Carrying out the migration smoothly

Which of the following statements regarding ABR is false?

An ABR can generate Tye 3 LSAs, Type 4 LSAs, and Type 5 LSAs.

An ABR has multiple LSDBs and maintains one LSDB for each area.

An ABR abstracts link state information within its connected non-backbone area as routing information and advertises the routing information within the backbone area.

An ABR needs to abstract link state information within the backbone area as routing information and advertises the routing information within all non-backbone areas.

An ABR can generate Tye 3 LSAs, Type 4 LSAs, and Type 5 LSAs.

Which of the following statements regarding the OSPF protocol is false?

An ABR is connected to multiple areas and maintains the same LSDB for all areas.

The metric of an AS-external-LSA can be specified during the import of external routes and defaults to 1.

External roting information can carry a tag, the tag information is contained in a Type 5 or Type 7 LSA.

The Link State ID in an ASBR-Summary-LSA is set as the router ID of this ASBR.

Which of the following statements regarding the LSA header information in AS-External-LSA is false?

Forwarding Address is always 0.0.0.0.

Link State ID indicates a destination network address.

Advertising Router indicates the router ID of an ASBR.

Net mask indicates the network mask of the destination network segment.

Forwarding Address is always 0.0.0.0.

Which of the following statements regarding the alarm is fault "OSPF/2/IFAUTFAIL(OID)[1.3.6.1.2.1.14.16.2.6]: A packet is received on a non-virtual interface from a router whose authentication key or authentication type conflicts with the local authentication key or authentication type. (IfipAddress=[ip-address], AddressLessIf=[interface-index], ProcessId=[process-Id], RouterId=[router-id], PacketSrc=[source-ip-address], ConfigErrorType=[error-type], PacketType= [packettype], InstanceName=[instance-name])"?

Incorrect interface authentication configuration

Which of the following statements regarding IS-IS characteristics are true? (Choose three.)

IS-IS is suitable for large-capacity route transmission.

IS-IS supports various area features.

IS-IS is suitable for large-capacity route transmission.

Which of the following statements regarding BGP route advertisement rules are true? (Choose three.)

A BGP Speaker advertises all BGP routes to new peers immediately after they establish BGP connections.

Generally, when multiple routes exist, a BGP Speaker adds only the optimal route into its routing table.

A BGP Speaker advertises the routes learned from an EBGP peer to all BGP peers, including EBGP peers and IBGP peers.

A BGP Speaker advertises all BGP routes to new peers immediately after they establish BGP connections.

A BGP Speaker advertises all BGP routes to its peers.

Generally, when multiple routes exist, a BGP Speaker adds only the optimal route into its routing table.

A BGP Speaker advertises the routes learned from an EBGP peer to all BGP peers, including EBGP peers and IBGP peers.

Which of the following statements regarding Local-Preference is true?

The default Local-Preference value is 100.

Local-Preference is a well-known mandatory attribute.

Local-Preference affects traffic that enters an AS.

Local-Preference can be transmitted between ASs.

The default Local-Preference value is 100.

Which of the following statements regarding AS_Path is false?

When a router has two or more routes to the same destination, the router compares the AS_Path attributes of these routes and prefers the route with the longer AS_Path attribute.

AS_Path is a list of ASs that a BGP route passes through.

AS_Path is a very important well-known mandatory attribute in BGP.

BGP does not accept the routes whose AS_Path attribute contains the local AS number.

When a router has two or more routes to the same destination, the router compares the AS_Path attributes of these routes and prefers the route with the longer AS_Path attribute.

BGP is an interdomain routing protocol. Which of the following statements regarding BGP are true? (Choose two.)

BGP uses a reliable transport protocol.

BGP supports rich routing policies.

BGP uses a reliable transport protocol.

BGP supports automatic neighbor discovery.

BGP supports plaintext authentication.

BGP supports rich routing policies.

Which of the following statements regarding PIM-DM is false?

PIM-DM does not have periodic flood-prune processes.

PIM-DM stands for Protocol Independent Multicast-Dense Mode. It is a dense-mode multicast routing protocol.

PIM-DM assumes that each subnet on a network has at least one receiver station interested in the multicast source.

PIM-DM uses the graft mechanism to restore multicast packet forwarding proactively.

PIM-DM does not have periodic flood-prune processes.

Which of the following statements regarding routing policies is true?

A routing policy is configured using the policy-based route command.

Routing policies control packet forwarding based on destination addresses in the routing table.

Routing policies are based on the forwarding plane and serve forwarding policies.

A routing policy needs to be manually configured hop by hop to ensure that packets are forwarded according to the policy.

A routing policy is configured using the policy-based route command.

Which of the following statements regarding join member interfaces are false when link aggregation works in manual mode?

An Eth-Trunk can work in Layer 2 or Layer 3 mode. The two working modes can be identified automatically and do not need to be switched manually.

An Eth-Trunk cannot be nestled, and a member interface cannot be an Eth-Trunk.

An Ethernet interface can join only one Eth-Trunk. Before adding an Ethernet interface to an Eth-Trunk, ensure that the Ethernet interface does not belong to any other Eth-Trunk.

If the local device uses the Eth-Trunk, the remote interface directly connected to the member interface must join the Eth-Trunk so that both ends can communicate.

An Eth-Trunk can work in Layer 2 or Layer 3 mode. The two working modes can be identified automatically and do not need to be switched manually.

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Huawei H12-224 Practice Test 18

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