Which statement about the VRRP timer is wrong? (Multiple choice)

• A.MASTER_DOWN =(3* ADVER_INTERVAL)+ Skew_time
• B.By default, the VRRP preemption delay is 1 second
• C.By default, the time period for VRRP notification messages is 2 seconds
• D.Skew_Time=(255-Priority)/255

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Which of the following route types can OSPF refer to? (Multiple choice)

• A.BGP
• B.IS-IS
• C.Static routing
• D.An OSPF instance different from itself
• E.Direct routing

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In network design, redundant network topologies can be selected to provide high reliability for customer services. Which of the following topologies can provide redundant functions? (Multiple choice)

• A.Star topology
• B.Bus Topology
• C.Ring topology
• D.Dual star topology

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What does the project implementation plan mainly include? (Multiple choice)

• A.Risk Control Measures
• B.Cutover process
• C.Time planning
• D.Staffing

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Which of the following description about the content contained in the update message is wrong?

• A.Update includes the path attribute
• B.Update contains reachable routing information
• C.Update contains local autonomous system messages
• D.Update contains information about revoking routing prefixes

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