Question

Imagine that you are an application developer. A new version of your operating system is released with several changes made to the transport layer protocols. Specifically, the algorithm for TCP has been changed from Tahoe to Reno. What changes must be made to your application to accommodate these changes?

Answer 1

ANSWER :

Before answering this question we need to know the difference between, TCP and UDP.  

~ TCP protocol is completely connection oriented one, it looks for the data that was going in the network keenly and will ensure a acknowledgement on the packet sent, also if the uplayer protocol is down, it will not allow to transfer the data, basically it will ensure there is no any packet loss during the transaction.

~ However UDP is connectionless protocol, there is no any acknowledgment business in UDP protocol, it normally used where few datagram loss doesn't a matter. It was comparatively a light weigh protocol.

So below are impact we will face, if TCP is removed.

1. There will connection establishment required in data transfer, so the application will work little faster.

2. without proper data control and acknowledgements, there is huge chance for data loss.

3. Now the application needs to rely completely on UDP, since UDP doesn't has congestion control, the app will get congested.

4. Also the interaction with top layer protocol will be a mess, it will not look if the layers are down or not. so if any upper layer is down, automatically the data will stuck the network, can't able reach the destination.

Hope this is helpful to u..... Thank u.....