Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

Solve the following problems.

problem 1) Compute the total time required to transfer 1500 KByte file in the following cases, assuming a RTT of 10ms, a packet size of 1500 bytes, and the initial 3 RTT of handshaking before the actual data is sent.

(a) The bandwidth is 10 Mbps and data packets can be sent continuously.

(b) The bandwidth is 10 Mbps, but after we finish sending each data packet we must wait one RTT before sending the next

(c) The bandwidth is infinite, i.e., the transmit time is zero, but only up to 25 packets can be sent per RTT

problem 2) This problem demonstrate possible danger of incorporating randomization in design. Let A and B be two stations attempting to transmit on the ethernet. Each has the steady queue of frames ready to send; A’s frames will be numbered A1, A2 and so on, and B’s similarly. Let T = 51.2μs is the exponential backoff base unit. Assume A and B simultaneously attempt to send frame 1, collide, and happen to choose backoff times of 0 x T and 1 x T, respectively. Therefore, A transmits A1 while B waits. At the end of this transmission, B will attempt to retransmit B1 while A will attempt to transmit A2. These first attempts will collide, but now A backs off for either 0 x T or 1 x T, while B backs off for time equal to one of 0 x T, ..., 3 X T.

(a) Determine the probability that A wins this second backoff race immediately after its first collision.

(b) Suppose A wins the second backoff race. A transmits A2 and, when it is finished, A and B collide again as A tries to transmit A3 while B tries once more to transmit B1. Determine the probability that A wins this third backoff race immediately after the first collision.

(c) Provide a reasonable lower bound for the probability that A wins all the remaining backoff races.

(d) What then happens to frame B1? This situation is called as the ethernet capture effect.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96743

Have any Question? 


Related Questions in Computer Network & Security

In order to provide for the new services at the akron ohio

In order to provide for the new services at the Akron, Ohio facility, the site must be added to the existing domain and configured. Create a security matrix spreadsheet and security strategy summary. Include the user rol ...

Assignmentnetwork architecture paper using either the osi

Assignment Network Architecture Paper: Using either the OSI Reference Model or the TCP/IP Protocol Suite, describe how each layer of the Model/Suite represents the communication flow between organizational levels and acr ...

Discussionip basic concepts please respond to the

Discussion "IP Basic Concepts" Please respond to the following: - Suppose that you work for a company that has been using IPv4 in each of its networks. After hearing a discussion about the differences between IPv4 and IP ...

Assignment network layerquestion 1 routing 1 use the packet

Assignment: Network Layer Question 1: Routing 1. Use the Packet Tracer software to build the above network. a. Choose the generic empty router type for your routers. b. Choose the generic empty switch type for your switc ...

Assignment case study handmade furniture ltdthis case study

Assignment case study: HandMade Furniture Ltd. This case study provides background information for both assignment 1 and assignment 2. As a network consultant, your initial examination of the company has discovered the f ...

Project infrastructure and securitythis assignment consists

Project: Infrastructure and Security This assignment consists of two sections: an infrastructure document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of t ...

Topic 1 wireless technologiescreate a short essay 1 to 3

Topic 1: Wireless Technologies Create a short essay (1 to 3 pages) that describes how you will set up a wireless network for the Nardi Pardy Corporation (a fictitious company). In this simple scenario, the company office ...

Computer sciencenetworks are not perfect and errors will

Computer Science Networks are not perfect, and errors will occur because of software and hardware problems. Network downtime is costly to business operations and should be minimized where economically possible. Part of t ...

Assignmentyou have been tasked with reconfiguring the

Assignment You have been tasked with reconfiguring the network for your company, which has grown considerably over the past year. You have used only static routing in the past, but you do not wish to spend the administra ...

Assignment1 as a new security manager for a retail

Assignment 1. As a new security manager for a retail operation, you have been asked to create a new loss prevention and risk management program that will be presented to upper management. Create a 10- to 12-slide Microso ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen