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What is the correct relative switching priority in a BLSR ring (higher to lower)?()
A. signal fail, signal degrade, manual switch
B. signal degrade, signal fail, manual switch
C. protection lockout, manual switch, path AIS
D. forced switch, manual switch, signal degrade
E. protection lockout, manual switch, forced switch
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In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?（）A. trunkingB. squelchingC. nodal bypassD. bridge and rollE. node failure insertion
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Why is an OC－3 2F－BLSR not feasible?()
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Click the Exhibit button. A customer has several interconnected core rings (see exhibit). They want to create several irtual rings?utilizing their OC-192 backbone (nodes 1,2,3,4). What should you recommend?（）A. PPMN with BLSR ringsB. PPMN with UPSR ringsC. 1:N protection on all core circuitsD. multi-ring interconnect with BLSR rings
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One type of frame switching uses low－latency forwarding and then switches to a higher－latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?()
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In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?（）A、trunkingB、squelchingC、nodal bypassD、bridge and rollE、node failure insertion
考题
What is the correct relative switching priority in a BLSR ring (higher to lower)?（）A、signal fail, signal degrade, manual switchB、signal degrade, signal fail, manual switchC、protection lockout, manual switch, path AISD、forced switch, manual switch, signal degradeE、protection lockout, manual switch, forced switch
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What is the correct relative switching priority in an MS-SPRing ring （higher to lower）？ （）A、 signal fail， signal degrade， manual switchB、 signal degrade， signal fail， manual switchC、 protection lockout， manual switch， path AISD、 forced switch， manual switch， signal degradeE、 protection lockout， manual switch， forced switch
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One type of frame switching uses low-latency forwarding and then switches to a higher-latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?（）A、store and forwardB、fragment-freeC、adaptive cut-throughD、fast-forward
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考题
单选题What is the correct relative switching priority in a BLSR ring (higher to lower)?（）A
signal fail, signal degrade, manual switchB
signal degrade, signal fail, manual switchC
protection lockout, manual switch, path AISD
forced switch, manual switch, signal degradeE
protection lockout, manual switch, forced switch
考题
单选题How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）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.
考题
单选题A new router is added to an existing HSRP standby group. One of the existing routers is in anactive state， the other is in a standby state. Under what circumstance will the new router becomethe active router？（）A
The new router will become active immediately because it’s the newest router introduced intothe groupB
The new router can become active only when the existing active router and the existing standbyrouter become unavailableC
The new router has a lower priority valueD
The new router will never become active unless the existing active router becomes unavailableE
The new router has preempt configured and a higher priorityF
The new router has a higher priority value
考题
单选题Why is an OC-3 2F-BLSR not feasible?（）A
Switch times would exceed 50 ms for an OC-3 BLSR ring.B
An equal amount of working and protect bandwidth is required.C
DCC bandwidth is not large enough to handle K1/K2 processing.D
There is not enough bandwidth in an OC-3 ring to justify BLSR protection.
考题
单选题One type of frame switching uses low-latency forwarding and then switches to a higher-latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?（）A
store and forwardB
fragment-freeC
adaptive cut-throughD
fast-forward
考题
单选题Your application uses two threads， named threadOne and threadTwo. You need to modify the code to prevent the execution of threadOne until threadTwo completes execution. What should you do？（）A
Configure threadOne to run at a lower priority.B
Configure threadTwo to run at a higher priority.C
Use a WaitCallback delegate to synchronize the threads.D
Call the Sleep method of threadOne. E
Call the SpinLock method of threadOne.
考题
单选题What is the correct relative switching priority in an MS-SPRing ring （higher to lower）？ （）A
signal fail， signal degrade， manual switchB
signal degrade， signal fail， manual switchC
protection lockout， manual switch， path AISD
forced switch， manual switch， signal degradeE
protection lockout， manual switch， forced switch
考题
单选题Why is the ring belt narrower in diameter than the skirt of a piston designed for a diesel engine?（）A
To allow for greater expansion due to higher operating temperatureB
To seal the cylinder against leakage of combustion gasesC
To provide an additional surface for oil coolingD
To provide an additional strength for the crown and lower structure
考题
单选题In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?（）A
trunkingB
squelchingC
nodal bypassD
bridge and rollE
node failure insertion
考题
单选题What is an advantage of an externally modulated laser over a directly modulated laser？ （）A
lower costB
higher chirpC
easier to manufactureD
higher dispersion toleranceE
higher optical signal-to-noise ratio
考题
单选题If the current and wind are in opposite directions，the sea surface represents（）.A
a greatly reduced wind speedB
a higher wind speed than what really existsC
a lower wind speed than what really existsD
more turbulent winds
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