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1.13.Which of the following statements are correct to describe the “network reliability” of Internet ?
下列哪些關於互聯網”網路可靠度”的敘述是正確 ?
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| (a)Packets may be lost due to network congestion. 封包可能會因為網路阻塞而遺失。 | |
| (b)Lost packets will be retransmitted by the routers. 路由器會重送遺失的封包。 | |
| (c)Packets may be delayed for different delay time before reaching the destination. 不同封包在抵達目的地主機前可能會有不同的延遲。 | |
| (d)Packets may be out-of-order due to different routing paths. 封包可能會因為走不同的路徑而產生到達順序不一致的狀況。 | |
| (e)Packets will be delivered to the destination based on “first-in-first-out” order. 封包將依據先送先到的機制依序被傳送到目的地。 |