A. trunking
B. squelching
C. nodal bypass
D. bridge and roll
E. node failure insertion
您可能感興趣的試卷
你可能感興趣的試題
A. Traffic is switched from the first node receiving the AIS indication.
B. Traffic is switched from the far side of the failure, allowing handshaking to occur.
C. UPSR traffic is switched from the terminating node, BLSR traffic is rerouted from the originating node in the ring.
D. UPSR traffic is switched from the terminating node, circuit by circuit. BLSR traffic is rerouted from the last reachable node in the ring.
A. Each fiber has half of its SONET capacity reserved for protection.
B. Two fibers in the span carry working traffic, while the other two fibers in the span are reserved for protection.
C. The signal is sent simultaneously in both directions around the ring. The receiver determines which fiber to listen to based on signal quality.
D. The signal is sent simultaneously in both directions around the ring. The transmitter determines which fiber has the working bit set for the receiver to acknowledge.
A. DS-1; E1
B. DS-1; STM-1
C. OC-3; STM-1
D. STS-1; STM-1
E. OC-192; STM-192
A.AMI
B.ESF
C.DUS
D.SSM
E.B3ZS
F.B8ZS
A.DUS
B.line timing
C.loop timing
D.internal timing
E.through timing
最新試題
How is a Thin Film filter fabricated?()
How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?()
What protection method is used in 4F BLSR networks?()
If node 2 is accepting line timing from node 1, node 2 will send ()to node 1 as its SSM message.
What is the difference between the transmitted power and the sensitivity of the receiver?()
For lasers with tightly controlled wavelengths, approximately how far apart are the centers of adjacent wavelengths when 100 GHz spacing is used in a DWDM system?()
What are two important considerations when using 2- or 4-channel 15216 OADMs?() (Choose two.)
The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs provisioned to add and drop specific channels?()
Click the Exhibit button. When designing a DWDM system with multiple amplified spans, a pre-amp is needed at Site B to (). (Choose three.)
Scrambling of SONET signals is done to ().