Ask Question, Ask an Expert


Ask Computer Network & Security Expert

Answer the following problems.

problem 1) Consider the two basic approaches identified toward achieving multicast: unicast emulation and network-layer-multicast. Consider a sender and 32 receivers. Assume that sender is connected to the receiver through a binary tree of routers. What is the cost of sending a multicast packet, in the case of unicast emulation and network-layer multicast, for this topology? Suppose that every time a packet (or a copy of the packet) traverses a link, it incurs a cost C. What topology for interconnecting the senders, receivers, and routers will bring the cost of unicast emulation and network-layer multicast as far apart as possible? You can choose as many routers as you like.

problem 2) As a possible congestion control mechanism in a subnet using virtual circuits internally, a router could refrain from acknowledging a packet until

(i) it knows its last transmission along virtual circuit was received successfully, and

(ii) it has a free buffer.

For simplicity, suppose that routers use a stop-and-wait protocol and that each virtual circuit has one buffer dedicated to it for each direction of traffic. If it takes T seconds to transmit a packet (data or acks) and there are n routers on the path, what is the rate at which packets are delivered to the destination host? Suppose that transmission errors are rare, and the host router connection is infinitely fast.

problem 3) Why does UDP exist? Would it not have been sufficient to let applications send raw IP packets?

problem 4) Consider idealized model for the steady-state dynamics of TCP: the average throughput of connection in the period where the congestion window varies from (W*MSS)/2 to W*MSS is (0.75 * W * MSS)/RTT. In this circumstances, suppose that only one packet is lost at the very end of each period. Demonstrate that the loss rate is equal to L = 1/[ 3/8 * W*W + 3W/4]

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96675

Have any Question? 

Related Questions in Computer Network & Security

Assignment standards researchthe following website may be

Assignment: Standards Research The following Website may be used for reference to complete this assignment. The Website represents an electronic document titled "Standards Organizations" written by William Stallings (200 ...

Or the purpose of the first part of this project you are

Or the purpose of the first part of this Project, you are still the InfoSec Specialist for the Greenwood Company. Consider this project a continuation of the work you performed in Projects 1 and 2. After seeing you searc ...

Threat management and disaster recovery final paper this is

Threat Management and Disaster Recovery Final Paper This is a two part assignment that will be submitted as one final paper Part 1 I would like you to complete a limited Risk Assessment for a fictional enterprise. This a ...

Module discussion questionpersonal factors such as anger

Module Discussion Question Personal factors, such as anger, revenge, and lack of rewards and recognition, may increase the risk of someone stealing from or spying against employees. Organizations should apply adequate se ...

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 ...

Networking trends paperin this paper you will research and

Networking Trends Paper In this paper, you will research and report on network design and management trends over the last three years (present year minus 2) in the areas of virtualization, security, hardware, network man ...

Assignment1many more square-wave digital encoding schemes

Assignment 1. Many more square-wave digital encoding schemes exist than NRZ-L, NRZI, Manchester, differential Manchester, and bipolar-AMI. List three other encoding techniques and show an example of how each encodes. 2. ...

1 list and describe the four types of computer networks

1. List and describe the four types of computer networks from largest to smallest.  2. Define client/server computing, packet switching, and TCP/IP.  Explain how these three things make the Internet so powerful and robus ...

Scenario additional detailshealth care hq has a

Scenario: Additional Details Health Care HQ has a client-server network architecture. The chief information officer (CIO) wants to understand the difference between a client-server and a peer-to-peer network. She also wa ...

Computer securitycryptography is the practice and study of

Computer Security Cryptography is the practice and study of techniques for secure communication in the presence of third parties called adversaries, and it is about constructing and analyzing protocols that prevent third ...

  • 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