SONET’sthreelayersare(). A.SectionB.LineC.FrameD.PathE.DS1
SONET’sthreelayersare().
A.Section
B.Line
C.Frame
D.Path
E.DS1
相关考题：
Which code causes only a Level 2 adjacency to be formed under the SONET interface so-2/2/2 withFrame Relay encapsulation?Which code causes only a Level 2 adjacency to be formed under the SONET interface so-2/2/2 with Frame Relay encapsulation?（）A.B.C.D.
Which three SONET network elements are used for troubleshooting?() A.lineB.pathC.circuitD.sectionE.segment
A SONET network typically uses which of the following transmission media?() A. Single-mode fiberB. Multimode fiberC. CopperD. Wireless
UPSR protection switching is initiated by (), while BLSR is initiated by (). A. the K1 SONET byte； the K2 SONET byteB. the K2 SONET byte；the K1 SONET byteC. transmitter switching；receiver detectionD. Line Overhead bytes；Path Overhead bytesE. Path Overhead bytes；Line Overhead bytes
Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS－1 timing source?() A.DUSB.line timingC.loop timingD.internal timingE.through timing
Which three are advantages of SONET？（）A、Allows the transportation of all forms of trafficB、Multiplexing is easyC、Clocks do not need to be synchronizedD、Reduces network complexity and costE、Padding is not necessary and not permitted
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
UPSR protection switching is initiated by （）, while BLSR is initiated by （）.A、the K1 SONET byte； the K2 SONET byteB、the K2 SONET byte；the K1 SONET byteC、transmitter switching；receiver detectionD、Line Overhead bytes；Path Overhead bytesE、Path Overhead bytes；Line Overhead bytes
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.
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。
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
Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?（）A、DUSB、line timingC、loop timingD、internal timingE、through timing
单选题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
单选题Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?（）ADUSBline timingCloop timingDinternal timingEthrough timing
多选题Which three SONET network elements are used for troubleshooting?（）AlineBpathCcircuitDsectionEsegment
多选题Which three are advantages of SONET？（）AAllows the transportation of all forms of trafficBMultiplexing is easyCClocks do not need to be synchronizedDReduces network complexity and costEPadding is not necessary and not permitted
单选题UPSR protection switching is initiated by （）, while BLSR is initiated by （）.Athe K1 SONET byte； the K2 SONET byteBthe K2 SONET byte；the K1 SONET byteCtransmitter switching；receiver detectionDLine Overhead bytes；Path Overhead bytesEPath Overhead bytes；Line Overhead bytes
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