多选题For which two network problems would QoS be a good solution？（）Aserialization delayBend-to-end delayClack of bandwidthDinconsistent port costsErouting table convergence issuesFpoor file transfer rates
多选题
For which two network problems would QoS be a good solution？（）
A
serialization delay
B
end-to-end delay
C
lack of bandwidth
D
inconsistent port costs
E
routing table convergence issues
F
poor file transfer rates
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