AR series routers provide various slots. Which of the following is not included?

• A.WSIC
• B.SIC
• C.HSIC
• D.XSIC

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oSPF is a very popular protocol. In the case of regular networking and correct configuration, routing calculations generally do not make mistakes. Which of the following reasons may cause 0SPF neighbors no

• A.The link works abnormally
• B.Neighbors have the same Router ID
• C.The 0SPF network types at both ends of the link are inconsistent
• D.Interface OSPF MTU configuration is different

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Which of the following causes for a VRRP group two-master fault is the most impossible?

• A.The master device sends a VRRP Advertisement packet every 1 second.
• B.The VRRP Advertisement packets received by the VRRP backup group with a lower priority are taken as invalid packets and are discarded.
• C.The configurations of the devices in the VRRP group are different.
• D.The link where VRRP Advertisement packets are transmitted is faulty.

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Which of the following tasks need to be completed during the planning stage of a project? (Multiple Choice)

• A.Work out the technical design
• B.Plan IP addresses
• C.Make clear the requirements of a project
• D.Know the project background
• E.Determine the model of network devices in the project

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The migration rollback time can be determined based on the actual migration situation, without the need to plan in advance.

• A.FALSE
• B.TRUE

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