Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Engineering Expert

problem 1: Compute the following:

A) Data is to be transmitted over the Public Switched Telephone Network (PSTN) by using 8 levels per signaling elements. If the bandwidth is 3000 Hz, deduce the theoretical maximum transfer rate.

B) Supposing that a communication line has a bandwidth of 3000 Hz and a typical signal to noise ratio of 20dB, find out the max theoretical information rate.

problem 2: Assume that a file of 35,000 characters is to be sent over the line at 55,000bps.

A) Compute the overhead in bits and time by using asynchronous transmission. Suppose 1 start bit and 1 stop bit and 8 bits to send the character itself for each character.

B) Compute the overhead in bits and time by using synchronous communication. Suppose that the data is sent in frames. Each frame comprises of 1000 bytes and overhead of 48 bits per frame for control, error detection and so on.

problem 3: Show that all work/logic employed in coming up with your answer for this problem

A) To provide more subnets, a Class B address is assigned the subnet mask of 255.255.240.0 How many hosts are possible per subnet.

B) What are the IP addresses used or spanned by the CIDR address 192.168.10.0/20?

C) The IP network 192.168.130.0 is using the subnet mask 255.255.255.224. What subnet are the given hosts on?

  • 192.168.130.10                                            
  • 192.168.130.67
  • 192.168.130.93
  • 192.168.130.199
  • 192.168.130.222
  • 192.168.130.250

problem 4: Two hosts, one on East (host A) and one on the west coast (host B) of the USA are exchanging data. Assume that A is sending a large file to B. The file is split into packets of size 8000bits. The hosts are employing a stop-and-wait protocol. Thus A has to wait for an Ack before sending the next packet. They are joined by 1Gbps link. Suppose that the round trip delay between them is 30ms. Therefore the packet leaves A, reaches B and then an acknowledgement leaves B and reaches A. This round-trip takes 30ms.

A) Compute the throughput and link utilization.

B) To improve utilization, the hosts decide to use a sliding window protocol. Therefore they agree to send a bunch of packets which the receiver can acknowledge by sending one acknowledge packet. Suppose a full duplex connection (that is, A and B and simultaneous exchange data with one other). If sliding window size is 50 packets then what happens to throughput and utilization?

C) What should be the sliding window size for the link utilization to be 100%?

problem 5: CSMA/CD based Ethernet LANs in different sites and Frame Relay (FR) service to connect them altogether. You want to make a difference in the organization by upgrading the LANs to be more scalable, better accessible and compatible with future initiatives like private cloud. You are preparing a report to board of VPs about your proposal. Answer the given problems about your proposal:

A) List at least three shortcomings of the current CSMA/CD based Ethernet LAN.

B) prepare down at least four technological enhancements that you propose for the wire line LAN infrastructure.

C) prepare down at least two benefits and two issues of adding a wireless LAN for the organization.

problem 6: In this problem, you will compare delays in packet switching (that is, in IP networks), in circuit switches (that is, in PSTN telephony) and in virtual circuit packet switching (that is, in FR networks). Suppose that the following parameters are defined for switching networks:

N: number of hops between two end points
L: message length in bits
B: data rate in bits per second (same on all links)
P: fixed packet size in bits
H: overhead (header) bits per packet
S: call setup time (in circuit switching and in virtual circuit) in seconds
D: propagation delay per hop in seconds
F: processing delay per packet per hop in packet switching.

Suppose the processing delay per packet per hop in virtual circuit packet switching is F/3 (packets are generally referred to as frames in virtual circuit packet switching). Do the given:

A) By using the defined parameters above, derive a mathematical expression showing under what condition the packet switching delay is equivalent or less than circuit switching delay.

B) By using the defined parameters above, derive a mathematical expression showing under what condition the virtual circuit packet switching delay is equivalent or less than packet switching delay.

Suppose that there are no acknowledgements. Show your steps in deriving your equations or expressions.

problem 7: Do the given problem

A) Consider a local telephone company offering triple-play (TV, Internet and Phone) services to the residential customers in a single metropolitan area. What might be the reasons that such a company loses its revenue and profits? Consider the persuade of changing business models, technological enhancements and regulations for answering this problem. You may suppose that the company owns the local loops and the switching equipment for its service in the area.

B) Assume that you are the new CEO of the local company in part (A). The company is committed to stay in business and increase the revenue. You are asked to present your strategy to the board of directors of the company. Suggest three new initiatives to keep you in business grow in revenue and increase profit. Briefly describe their pros and cons.

problem 8:

A) Assume that you are the new regulator in charge who has authority over Internet services (though in reality such a position might not exist depending on your country). You aim to improve the competition among the Internet Service Providers (ISP) and as well want to promote new competitive ISPs to emerge. describe two competition models which you could propose to further your objectives. Describe briefly the impact of your proposals on existing ISPs. Describe briefly the pros and cons of your models.

B) Your company is in the business of offering high speed Internet Access all along with other services like Web Hosting. You are the product manager who designs product and service plans to small and medium business in downtown. You realize that providing one product-price plan to all is not sufficient and that you can raise profits by offering smart product bundles. After conducting a small survey, you find that some firms (totaling 20) are willing to pay $49.99/ per month for a reliable high speed Internet while others (another 20) can pay as much as $59.99. [Suppose that consumer’s willingness to pay – price = Consumer Surplus. Users always select a product or product bundle that gives them higher Consumer Surplus].

i) Is there any way you can sell two different price plans to such businesses? Why? Why not? What are your profits?
ii) You as well find from your survey that firms who are willing to pay higher are as well interested in web hosting and can pay another $20 for it. Now, can you design some product plans to raise your profits? What are those plans and what is the profit?

Computer Engineering, Engineering

  • Category:- Computer Engineering
  • Reference No.:- M91363

Have any Question? 


Related Questions in Computer Engineering

1 the binary search tree operations can also be implemented

1. The binary search tree operations can also be implemented iteratively. Design and implement an iterative solution for each operation: (a) search (b) find minimum (c) insert (d) delete 2. Design and implement the funct ...

Assume now that you have two friends that will help you

Assume now that you have two friends that will help you cook, and that you have a large oven that can accommodate all three cakes. How will this change the schedule you arrived at in Exercise 6.2.1 above? Exercise 6.2.1 ...

To avoid shutting down a website when changing the server

To avoid shutting down a website when changing the server of the website, redirecting traffic to an intermittent subdomain is required? List the steps of the redirection process?

1 some have sounded an apocalyptic voice as far as finding

1. Some have sounded an apocalyptic voice as far as finding solutions to system vulnerabilities. Should we take them seriously? Support your response. 2. What is innovative misuse? What role does it play in the search fo ...

Assume that we have an isolated as running rip we can say

Assume that we have an isolated AS running RIP. We can say that we have at least two different kinds of datagram traffic in this AS. The first kind carries the messages exchanged between hosts; the second carries message ...

To make the initial sequence number a random number most

To make the initial sequence number a random number, most systems start the counter at 1 during bootstrap and increment the counter by 64,000 every half second. How long does it take for the counter to wrap around?

1 develop an equation that computes how many links in the

1. Develop an equation that computes how many links in the n-cube (where n is the order of the cube) can fail and we can still guarantee an unbroken link will exist to connect any node in the n-cube. 2. Compare the resil ...

1 using the cidr notation show the ipv6 address compatible

1. Using the CIDR notation, show the IPv6 address compatible to the IPv4 address 129.6.12.34. 2. Using the CIDR notation, show the IPv6 address mapped to the IPv4 address 129.6.12.34. 3. Using the CIDR notation, show the ...

1 create an array of 1000 integers sorted in numerical

1. Create an array of 1000 integers sorted in numerical order. Write a program that runs each sorting algorithm with this array, timing each algorithm, and compare the times. Compare these times to the times for sorting ...

1 compare and contrast full- and partial-mesh topologies

1. Compare and contrast full- and partial-mesh topologies. What advantages does a partial mesh have compared to a full mesh? What advantages does a full mesh have compared to a partial mesh? 2. Why is it difficult to ach ...

  • 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