Assume all the links in the Internet provide reliable delivery service--select the answer which best explains why TCP's reliable delivery service would still be required. 1. TCP's reliable delivery service is not needed in this case because the application in the host devices will resend messages if the network layer discards IP datagrams. 2. IP provides an unreliable delivery service and will discard datagrams for various reasons. 3. TCP's reliable delivery service is not needed in this case because each link along the total path guarantees frame delivery to the next device. 4. TCP's reliable delivery service would not be needed in this case because IP provides reliable datagram delivery with ACKs, NAKs, and retransmission.
Assume all the links in the Internet provide reliable delivery service--select the answer which best explains why TCP's reliable delivery service would still be required.
1. TCP's reliable delivery service is not needed in this case because the application in the host devices will resend messages if the network layer discards IP datagrams.
2. IP provides an unreliable delivery service and will discard datagrams for various reasons.
3. TCP's reliable delivery service is not needed in this case because each link along the total path guarantees frame delivery to the next device.
4. TCP's reliable delivery service would not be needed in this case because IP provides reliable datagram delivery with ACKs, NAKs, and retransmission.
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