SDH和SONET是同一个概念。
SDH和SONET是同一个概念。
相关考题：
Which two statements are true about optical networks?() A. SONET and SDH both use time-division multiplexing.B. An optical transport network system uses time-division multiplexing.C. SONET and SDH both use wavelength-division multiplexing.D. An optical transport network system uses wavelength-division multiplexing.
On an ONS 15454 node you can tunnel an (). A. SDH circuit over a SONET network delivering it as an SDH signalB. SDH circuit over a SONET network delivering it as a SONET signalC. SONET circuit over an SDH network delivering it as an SDH signalD. SONET circuit over an SDH network delivering it as a SONET signal
What protocol enables Ethernet over SONET／SDH encapsulation interoperability between the G－series and ML－series Ethernet cards?() A.LEXB.HDLCC.GFP-FD.PPP/BCP
Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects two or more customer devices using Ethernet bridging techniques?() A.DPTB.MPLSC.VPLSD.CWDME. DWDMF. SONET/SDH
WhichofthesetechnologiesischaracterizedasbeingamultipointLayer2VPNthatconnectstwoormorecustomerdevicesusingEthernetbridgingtechniques?() A.DPTB.MPLSC.VPLSD.CWDME.DWDMF.SONET/SDH
On an ONS 15454 node you can tunnel a（n） （）.A、 SDH circuit over a SONET network delivering it as an SDH signalB、 SDH circuit over a SONET network delivering it as a SONET signalC、 SONET circuit over an SDH network delivering it as an SDH signalD、 SONET circuit over an SDH network delivering it as a SONET signal
POS（PacketOverSONET/SDH，SONET/SDH上的分组）将长度固定的数据包直接映射进SONET同步载荷中，使用SONET物理层传输标准，提供了一种高速、可靠、点到点的数据连接。
Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects twoor more customer devices using Ethernet bridging techniques？（）A、 DPTB、 MPLSC、 VPLSD、 CWDME、 DWDMF、 SONET/SDH
On an ONS 15454 node you can tunnel an （）.A、SDH circuit over a SONET network delivering it as an SDH signalB、SDH circuit over a SONET network delivering it as a SONET signalC、SONET circuit over an SDH network delivering it as an SDH signalD、SONET circuit over an SDH network delivering it as a SONET signal
单选题On an ONS 15454 node you can tunnel an （）.ASDH circuit over a SONET network delivering it as an SDH signalBSDH circuit over a SONET network delivering it as a SONET signalCSONET circuit over an SDH network delivering it as an SDH signalDSONET circuit over an SDH network delivering it as a SONET signal
单选题What protocol enables Ethernet over SONET/SDH encapsulation interoperability between the G-series and ML-series Ethernet cards？（）A LEXB HDLCC GFP-FD PPP/BCP
单选题Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects twoor more customer devices using Ethernet bridging techniques？（）A DPTB MPLSC VPLSD CWDME DWDMF SONET/SDH