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Consider a simple protocol for transferring files over a link. After some initial negotiation, A sends data packets of size 1 KB to B; B then replies with an acknowledgment. A always waits for each ACK before sending the next data packet; this is known as stop-and-wait. Packets that are overdue are presumed lost and are retransmitted.
(a) In the absence of any packet losses or duplications, explain why it is not necessary to include any "sequence number" data in the packet headers.
(b) Suppose that the link can lose occasional packets, but that packets that do arrive always arrive in the order sent. Is a 2-bit sequence number (that is, N mod 4) enough for A and B to detect and resend any lost packets? Is a 1-bit sequence number enough?
(c) Now suppose that the link can deliver out of order, and that sometimes a packet can be delivered as much as 1 minute after subsequent packets. How does this change the sequence number requirements?
"Security Models and Cloud Operations" Please respond to the following: 1. Analyze the industry researched for each security model would be most applicable, and explain why you believe that to be the case. Identify the security models from your find..
Give a CFG which represents the language {a^i b^j c^k / i!=j or j!=k }
Listen to "Matchbox Blues" by Blind Lemon Jefferson and the version by Carl Perkins. Compare and contrast the two versions in a paragraph and talk about the overall themes of the blues.
For example, if "elmore" is the search target then any contact where the first name, last name, phone number, or email address contains "elmore" should be returned for display or deletion. Use a "for each" loop to iterate through the ArrayList.
The media Access Control (MAC) address of a network interface ia a unique address. Each network interface relating to it's MAC fits the critera of a function because each device has it's own, unique MAC address. Describe an everyday situation in your..
One lives in a world where the internet plays a pinnacle role in our day to day lives. Discuss how the internet has caused an ethical debate on our information privacy
In an ideal embedded operating system, would all non-kernel threads always execute at lower priority than interrupts? Why?
What are the differences between a struct and a class?
Explain why you think these questions would be the type to "reveal" the computer to be a computer? Why would these responses have to be given a human begin?
In the transport layer, data transmission is controlled to ensure data integrity and avoid data loss. What is the technique called?
Write a program called Guessing Game that will generate a random number between 1 and 100. The program will tell the player if his/her guess is too high or too low and when it is correct and will continue until the player guesses the number or end..
1 List (2) organizations that work to prevent software piracy and discuss the methods they use for soliciting report of piracy.2. Discuss at least two (2) methods used to report software piracy.
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