單項(xiàng)選擇題

What is the port number of an IPsec Encapsulating Security Payfoad packet？（）

A.UOP port 50
B.IP protocol 51
C.TCP port 51
D.TCP port 50
E.IP protocol 50
F.UDP port51

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What is the encapsulation format of an MPLS Multicast VPN （MVPN） packer？（）

A.IP unicast in IP unicast
B.IP multicast in IP anycast
C.IP anycast in IP anycast
D.IP multicast in IP unicast
E.IP multicast in IP multicast
F.IP unicast in IP multicast

多項(xiàng)選擇題

For SONET ring switching， the 50ms switch time： Select all that apply？（）

A.Plncludes the detection time
B.Applies to rings smaller than 1200km
C.Applies to rings smaller than 1000km
D.Includes up to 16 nodes

What is the port number of an IPsec Encapsulating Security Payfoad packet？（）

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What is the encapsulation format of an MPLS Multicast VPN （MVPN） packer？（）

For SONET ring switching， the 50ms switch time： Select all that apply？（）

What is the encapsulation format of an MPLS Multicast VPN （MVPN） packer？（）

For SONET ring switching， the 50ms switch time： Select all that apply？（）