If the network address of a network is 10.1.1.0/30, what is its broadcast address?

• A.10.1.1.4
• B.10.1.1.2
• C.10.1.1.3
• D.10.1.1.1

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Which stage of the life cycle of campus network construction is the beginning of a project?

• A.Network operation and maintenance
• B.Network optimization
• C.Planning and design
• D.Network implementation

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Which of the following protocols does the RA message used by IPv6 stateless autoconfiguration belong to?

• A.TCPv6
• B.IGMPv6
• C.UDPv6
• D.ICMPv6

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In which working state of the STP protocol can the port be changed to the Forwarding state without going through other states?

• A.Listening
• B.Blocking
• C.Learning
• D.Disabled

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Which of the following are related to the purpose of encapsulation and decapsulation? (Multiple choice)

• A.Interworking between different networks
• B.Shorten the length of the message
• C.Encapsulation and decapsulation are important steps to realize different protocol functions
• D.Encapsulation and decapsulation can complete network fault location

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