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

Discussiontroubleshooting please respond to the followingas

DISCUSSION Troubleshooting" Please respond to the following: ?As explained throughout the text, troubleshooting is a structured methodology that requires personal fine-tuning. With that in mind, suppose a user at your co ...

Assignment network consultation for designitthis assignment

Assignment: Network Consultation for DesignIT This assignment contains two Sections: Network Consultation Proposal and Network Consultation Presentation. You must submit both sections as separate files in order to comple ...

Assignmentyour have been contracted by healthfirst hospital

Assignment Your have been contracted by HealthFirst Hospital Foundation (HHF), a charitable organization that provides services to community clinics in Atlanta, Georgia. Due to the organization's tremendous growth, it wi ...

Topic one discuss fisma and its relevance to cybersecurity

TOPIC One: Discuss FISMA and its relevance to cybersecurity. (must be 200 words with references) Topic Two: (must be 200 words with references) Define the terms below and describe the environment in which each access con ...

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 ...

Assignment descriptionassignment overviewfor this

Assignment Description Assignment Overview For this assignment you will evaluate a Network Security Software. Marks will be awarded based on the sophistication and the difficulties the demonstration explored. Your task i ...

Term paper planning an it infrastructure audit for

Term Paper: Planning an IT Infrastructure Audit for Compliance Note: Chapter 5 of the required textbook may be helpful in the completion of the assignment. The audit planning process directly affects the quality of the o ...

1 assume a system with two processors in series where each

1. Assume a system with two processors in series where each processor has an unlimited queue in front of it; also assume FIFO queue disciplines for both servers. We need to collect data on individual entity total time in ...

Module case studythe purpose of this assignment is for

Module Case Study The purpose of this assignment is for students to write a case study based on a common information security scenario. Prompt: You are the senior information security manager for a federal agency. You re ...

Develop a network security plan for a medical record

Develop a Network Security Plan for a Medical Record Company. As a network administrator you are required to develop a brand new security plan. The medical record company consists of the following individuals: Doctors, N ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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