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What is piggybacked ACK
The protocol will be incorrect. Suppose that 3-bit sequence numbers we are using. Consider following situation:
A just send frame 7.
B gets frame and sends a piggybacked ACK.
A gets ACK and sends frames 0-6, all of that get lost.
B times out and again transmits its current frame, with ACK 7.
Look at the situation at A when frame with r.ack = 7 arrive. The key variables are AckExpected = 0, r.ack = 7, and Next Frame to Send = 7. The modified among will return true, causing A to think lost frames were being acknowledged.
Discuss about the similarity of Intranets to the Internet The ease of use of the end user would be the most noticeable because of the similarity of Intranets to the Internet. S
a) Used for sending e-mail. b) Uses port 25.
How do we do encryption and authentication in L2F?
Can you define the method of demilitarized zone?
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