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单选题
On which component are RED and WRED managed in the router?（）
A
I/O module
B
switch fabric
C
egress line module
D
ingress line module
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考题
单选题What is the term "ordered control" mean regarding how MPLS LSPs are established?（）A
establish starting at the egress router going back to the ingress routerB
establish starting at the ingress router going downstream to the egress routerC
establish when a router learns of a new prefixD
establish when the path correctly matches the reverse path forwarding check
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单选题The primary line module has failed and the spare line module is nowactive.What occurs，by default，when the primary line module returns to an operational status？（）A
The primary line module is inactive for five minutes and then becomes active.B
The primary line module is in standby mode，while the spare line module remains active.C
The primary line module becomes active immediately and the spare line module becomes inactive.D
The primary and spare line modules are active for five minutes，after which time the spare line module becomes inactive.
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考题
单选题Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）A
on the SRPB
on the I/O adapterC
on the egress line moduleD
on the ingress line module
考题
单选题On which component are RED and WRED managed in the router?（）A
I/O moduleB
switch fabricC
egress line moduleD
ingress line module
考题
单选题What is the importance of using Virtual Output Queues on ingress Line Cards in a high-end router？（）A
Prevents head-of-line blockingB
Uses less memoryC
Increases forwarding performanceD
Simplifies configuration
考题
单选题Which statement describes queue and buffer managment in the E-series router?（）A
Buffer memory is managed dynamically in the I/O module.B
Buffer memory is managed dynamically in the switch fabric.C
Buffer memory is managed dynamically on egress line modules.D
Buffer memory is managed dynamically on ingress line modules
考题
单选题On Cisco Nexus 5000 Series Switches， where are the virtual output queues implemented， and what is the main purpose of virtual output queues？（）A
on all ingress interfaces； to ensure maximum throughput on a per-egress， per-CoS basisB
on all ingress interfaces； to provide independent congestion management and 16 queuesC
on all egress interfaces； so that a congested egress port does not affect traffic directed to other egress portsD
on all egress interfaces； to prevent head-of-line blocking by utilizing multiple virtual output queuesE
on all egress interfaces； to be able to use EEE 802.1p CoS
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