In the OSPF broadcast network, there are four routers RTA, RTB, RTC, and RTD in the same network segment. The DR priorities are 2, 1, 1, and 0 respectively. The router ID are 192.168.1.1, 192.168.2.1, and 192.168.3.1 and 192.168.4.1. If OSPF protocol is enabled on the four routers at the same time, what is the BDR selected by OSPF?

• A.RTD
• B.RTB
• C.RTC
• D.RTA

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Which of the following types of packets is required to implement virtual machine migration in the BGP EVPN distributed gateway scenario?

• A.Type3
• B.Type1
• C.Type4
• D.Type5
• E.Type2

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Which of the following is optimal for building a loop-free Layer 2 network?

• A.Stacking + MSTP
• B.TRILL+MSTP
• C.Stacking + link aggregation
• D.Link Aggregation + MSTP

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Which of the following technologies use tunnels to communicate between IPv6 addresses? (Multiple Choice)

• A.ISATAP
• B.6to4
• C.Dual Stack
• D.NAT64

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Which of the following description is true about the ISIS LSP fragmentation extension?

• A.ISIS's fragmentation extension is achieved by adding virtual systems that can scale up to 1000 virtual systems.
• B.Enable the ISIS router to generate more LSP fragments to carry more ISIS information.
• C.ISIS routers can generate up to 1024 shards.
• D.ISIS's fragmentation extension is equally valid for Hello packets.

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