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1. Suppose four active nodes-nodes A, B, C and D-are competing for access to a channel using slotted ALOHA. Assume each node has an infinite number of packets to send. Each node attempts to transmit in each slot with probability p. The first slot is numbered slot 1, the second slot is numbered slot 2, and so on.a. What is the probability that node A succeeds for the first time in slot 5?b. What is the probability that some node (either A, B, C or D) succeeds in slot 4?c. What is the probability that the first success occurs in slot 3?d. What is the efficiency of this four-node system?
2. Recall that with the CSMA/CD protocol, the adapter waits K.512 bit times after a collision, where K is drawn randomly. For K = 100, how long does the adapter wait until returning to Step 2 for a 10Mbps Ethernet? For a 100 Mbps Ethernet?
I am having difficulty with the following questions: Differentiate between a two-tier client/server system and a three-tier client/server system. Why would a firm select one of these approaches over the other when implementing a client/server syst..
In the 802.11i, authentication always utilizes the SSL/TLS, Outer, Inner, Both A and B, Neither A nor B.
Compare and contrast the monitoring of patient vital signs utilizing the mobile computing technology to in-patient visits to the doctor’s office or hospital.
Recognize any potential vulnerabilities in act of making a purchase through the debit card, and which area of the CIA triad they apply to.
For an example, if I want to search for a text file/script that contains the most number of for loop statements, and have it displayed on the screen, How will I do that?
What are the differences between client and a server. What is function of each layer in a three-layer application?
Discuss the innovative and creative ways in order to use patient ID bracelet consisting of a bar-code representation of patient's ID.
How are enterprise software tools/enterprise resource planning used in helping to decrease the cost of designing and implementing new systems.
How many cars in every team called Chevy and Ford There are eight cars in every team called Chevy and Ford. One car from each team races its opponent on drag strip.
imagine the CashRegister needs to support a method void undo() that undoes the addition of the preceding item. This enables a cashier to quickly undo a mistake. What instance variables should you add to the CashRegister class to support this modif..
Does the use of contractions, slang and icons in text messaging and email signal the development of a new communication style, or just the death of appreciation of written language.
build an Employee class with two fields, idNum and hourlyWage. The Employee constructor requires values for both fields. Upon construction, it throw an EmployeeException if the hourlyWage is less than 6.00 or over 50.00. Save the class as Employee..
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