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【判断题】
送气音与不送气音的区别在于,发音时,口腔呼出气流较弱的为送气音,较强的为不送气音。所以j是送气音,q是不送气音。A.
正确
B.
错误
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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?
【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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