单项选择题

A. bridgingB. switchingC. squelchingD. nodal bypassE. n……

In order to avoid misconnections due to a failed node in an MS-SPRing， Alarm Indication Signals （AISs） are sent on every channel normally terminating in that node.
What is the name of this process？（）

A. bridging
B. switching
C. squelching
D. nodal bypass
E. node failure insertion

<上一题目录下一题>

热门试题

单项选择题WhichtimingmodeisappropriateforanSDHNEthatisadjacenttoanSDHNEBits-1timing？（）

A. DUS
B. line timing
C. loop timing
D. internal timing
E. through timing

多项选择题WhichtwocanbetransportedinoneAU-4？（）

A. 3 E3
B. 4 E4
C. 64 E1
D. 21 E1 and 2 E3
E. 42 E1 and 2 E3

单项选择题HowisSNCPandMS-SPRingtrafficreroutedduringaprotectionswitchwhenacompletefibercablecutoccurs？（）

A. SNCP traffic is switched from the first node that recieves the AIS. MS-SPRing traffic is rerouted from the first in the ring.
B. SNCP traffic is selected at the destination node in the ring. MS-SPRing is rerouted from the originating node in the ring.
C. SNCP traffic is rerouted from the originating node in the ring. MS-SPRing traffic is rerouted from the originating node in the ring.
D. SNCP traffic is selected at the destination node in the ring. MS-SPRing traffic is rerouted from the last reachable node in the ring.

单项选择题AVC-4-4cconsistsof（）.

A. an STM-16
B. any four VC-4s
C. four contiguous VC-4s
D. four contiguous STM-4s
E. two groupings of four VC-4s

单项选择题OnanONS15454nodeyoucantunnela（n）（）.

A. SDH circuit over a SONET network delivering it as an SDH signal
B. SDH circuit over a SONET network delivering it as a SONET signal
C. SONET circuit over an SDH network delivering it as an SDH signal
D. SONET circuit over an SDH network delivering it as a SONET signal