Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

problem 1) Differentiate between LAN, MAN and WAN along with neat diagrams.

b) Briefly describe the following:

(i) Spectrum of a signal.

(ii) Digital transmission

(iii) Codec

(iv) Intermodulation noise.

problem 2)a) What is attenuation? How does it affect signal transmission through a communication medium? How can you make sure good signal quality when there is attenuation?

b) Given a channel with an intended capacity of 200 Mbps, the bandwidth of the channel is 30MHz. Suppose white thermal noise, what signal to noise ratio is required to achieve this capacity.

c)  Describe satellite transmission.

problem 3)a) For the bit stream 1010011010(10 bits) sketch the waveforms for the following codes. Make suitable assumptions where ever necessary.

i) NRZL

ii) NRZ-I

iii) Bipolar-AMI

iv) Manchester

v) Differential Manchester.

b) With a neat diagram and appropriate equations describe quadrature amplitude modulation.

problem 4)a) An asynchronous transmission scheme uses 8 data bits, an even parity bit and a stop element of length 2 bits. Duration of one bit is 100 microseconds. If the receiver clock is 6% faster than the transmitter clock illustrate the sampling instants for all the bits. Are all the bits received correctly? Suppose that the bit samples are taken at the middle of the clock period. Also assume that at the beginning of the start bit, the clock and incoming bits are in phase.

b) For P=101011 and M=1110010110(10 bits) find CRC by using polynomial notation.

c) Describe the problem associated with maximum window size in Go-back-N ARQ.

problem 5)a) Along with neat diagrams describe Frequency Division Multiplexing. What are its disadvantages?

b) A large population of ALOHA users manage to generate 50 requests/sec including both originals and retransmissions. Time is slotted in units of 40 msec.

(i) What is the chance of success on the first attempt?

(ii) What is the probability of exactly k collisions and then a success?

(iii) What is the expected number of transmission attempts needed?

problem 6)a) What are the properties of a routing algorithm?

b) Describe link state routing with an ex.

c) Describe load shedding.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96630

Have any Question? 


Related Questions in Computer Network & Security

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 ...

Security management assessmentimplementing basic security

Security Management Assessment Implementing basic security management is an important task for system administrators, as security is important to today's organizations. IT specialists are on the front lines of protecting ...

Explain the key differences between symmetric and

Explain the key differences between symmetric and asymmetric encryption. Which can the computer process faster? Which lowers the costs associated with key management? What is a VPN? Why are VPNs widely used?

Why do networking components need more examination from an

Why do networking components need more examination from an InfoSec perspective than from a systems development perspective? What value would an automated asset inventory system have for the risk identification process? W ...

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 ...

Technical paper risk assessmentglobal finance inc network

Technical Paper: Risk Assessment Global Finance, Inc. Network Diagram Above is the Global Finance, Inc. (GFI) network diagram. A hypothetical company, GFI has grown rapidly this past year and implemented a number of netw ...

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 ...

What special function does a cache server perform why does

What special function does a cache server perform? Why does this function have value for larger organizations? How does screened-host firewall architecture differ from screened-subnet firewall architecture? Which offers ...

Assignmentinstructions1you just received a brand new

Assignment Instructions 1. You just received a brand new computer for your home environment. It comes with the latest Operating System. You also have an Internet Service Provider where you can easily use the existing net ...

There are many arguments about cloud based information

There are many arguments about cloud based information services and/or offering IT as a cloud-based service. Some say cloud computing is nothing more than outsourcing IT and creating a dependency that will trap the organ ...

  • 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