SONET全称为()
第1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.
第2题:
A. Single-mode fiber
B. Multimode fiber
C. Copper
D. Wireless
第3题:
此题为判断题(对,错)。
第4题:
On an ONS 15454 node you can tunnel a(n) ().
第5题:
A.DUS
B.line timing
C.loop timing
D.internal timing
E.through timing
第6题:
A.line
B.path
C.circuit
D.section
E.segment
第7题:
A. the K1 SONET byte; the K2 SONET byte
B. the K2 SONET byte;the K1 SONET byte
C. transmitter switching;receiver detection
D. Line Overhead bytes;Path Overhead bytes
E. Path Overhead bytes;Line Overhead bytes
第8题:
ITU-T接受了SONET的概念,将其重新命名为( )。
A.ATM
B.PDH
C.SDH
D.CDMA
第9题:
OptiX Metro 1600是华为公司面向北美和日本城域网光网络市场推出的NG-SONET(下一代SONET)设备。
第10题:
UPSR protection switching is initiated by (), while BLSR is initiated by ().