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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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
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2.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
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4.單項(xiàng)選擇題What does FRTP stand for?()

A.Frame Relay Top Pseudowire
B.Frame Relay Traffic Pseudowire
C.Frame Relay Traffic Protocol
D.Frame Relay Traffic Policing

5.單項(xiàng)選擇題GMPLS is based upon Non-Packet-based devices.()

A.True
B.False

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