Calculate the total time required to transfer a 1000-KB (KB: Kilo-Byte) file in the following cases, assuming a Round Trip Time (RTT) of 50ms, a packet size of 1KB, and an initial 2*RTT of handshaking to establish the connection before data is sent (1 points):

(a) the bandwidth is 1.5Mbps (million bits per second), and data packets can be sent continuously.
(b) the bandwidth is still 1.5Mbps, but we use a protocol with ACK to improve reliability. After we finish sending each data packet we must wait one RTT to receive ACK before sending the next.

answer:

explanation:

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answer:

a

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answer:

a

explanation:

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