A.IP/VPN FRR

B.MC-PW APS

C.MC-LAG

D.VPN FRR

A.PDM-QPSK technology is the main modulation code technology for 100G transmission, which can reduce the line rate of 112Gb/s to the baud rate of 28Gbaud/s, greatly reducing the loan requirements for (optical) electrical devices.

B.PDM polarization multiplexing technology is adopted, which has better nonlinear tolerance than
40GePDM-BPSK.

C.PDC-QPSK supports DCMfree and DCM system applications, and supports smooth upgrade from existing 10G/40G network to 100G system.

D.The essence of QPSK modulation is to reduce the baud rate of the optical signal by half without reducing the line rate by selecting 4 possible values in the phase of the optical field.

A.False

B.True

A.TPA1EXL1

B.TPA1EX4

C.mA1EH1

D.TPA1EXL2

A.It is composed of all L2 routers (including L1/L2)

B.For inter-area routing

C.Can be discontinuous

D.Identified with the area aea0