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【单选题】
在洪水峰、量频率计算中,洪峰流量选样的方法是?A.
超定量法
B.
最大值法
C.
超均值法
D.
年最大值法
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反馈参考答案：
举一反三
【多选题】Layer 2 switching provides which of the following? (Choose four.)
A.
Hardware-based bridging (ASIC)
B.
Wire speed
C.
Low latency
D.
Low cost
E.
Routing
F.
WAN services
【单选题】In the 7-layer OSI model, which layer switching will take place?（）
A.
Layer one
B.
Layer two
C.
Layer three
D.
Layer four
【单选题】In the 7-layer OSI model, which layer switching will take place?（）
A.
Layer two
B.
Layer four
C.
Layer one
D.
Layer three
【单选题】Company uses layer 3 switches in the Core of their network. Which method of Layer 3 switching uses a forwarding information base （FIB）？（）
A.
Topology-based switching
B.
Demand-based switching
C.
Route caching
D.
Flow-based switching
E.
None of the other alternatives apply
【简答题】继电接触控制系统中,有些电路为什么必须要互锁,试举一例?
【单选题】What benefit results from implementation of Layer 3 switching versus Layer 2 switching in a fully meshed campus network？（）
A.
ease of IP address assignment versus use of external routers
B.
redundancy from trunking between distribution layer switches
C.
provides first-hop redundancy to clients
D.
allows inter-VLAN communication without requiring complexity of routing protocols
【多选题】Layer 2 switching provides which of the following? (Choose two options.)
A.
Hardware-based bridging (MAC)
B.
Wire speed
C.
High latency
D.
High cost
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