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Advantages and disadvantages of different data transmission technologies.

As much as you may have a preference for a type of network (i.e. broadband, wireless) each technology has both disadvantages and advantages. Use the Discussion Tool to discuss the advantages and disadvantages of different data transmission technologies. Please answer and provide references and in line citation APA style form

SQL Queries to Manipulate Tables

Please refer to the attached file SQL1.txt that contains SQL commands to create two tables Employee and Job_Title, and populate them with data. Write SQL queries to accomplish following. 1. Choose a Job Description and increase by 10% all employees' salaries that have the selected Job Description (not Job Title). 2. Dec

How big is a physical PDU?

How big is a physical PDU (protocol data unit)? The answer to this question determines the number of simultaneous transmissions for many network architectures. If a signal propagates through copper wire at the rate of 2*10^8 meters per second, then on a carrier running at 10 Mbps the length of each bit pulse is given by: S

Propagation delays at the physical layer

1) Consider a communications satellite in geosynchronous orbit. It sits approximately 35,786 km above the Earth's equator. What is the transmission delay in seconds that would be expected for a data packet to travel from one ground station to another via this satellite? You may make the simplifying assumption that the data packe

Find and discuss the ways a company can use advanced Excel tools

Find and discuss the ways a company can use advanced Excel tools such as MIN and MAX statement, conditional formatting, and additional tools that you have discovered to manage their business finances. Once you have created a formula, the formula can be copied to subsequent cells. When the formula is copied it may change dependin

Case Study using POM

Instructions: Hand in its solution in which you show clearly HOW you got you answers. Hand in also whatever solution POM for Windows can give you. Right a short paragraph to answer the two questions asked using your analysis, and make sure you express the changes in productivity for 2007 as a percentage too. Bob Richards

Personal or Family Budget

In this project, you will enter in the correct Formulas/Functions to complete a family budget that has been started for you. You will also create a pie chart that will represent the expenses for the entire year. To view these instructions while working in Excel, print these instructions or move back and forth between your browse

Link Layer

According to the figure in the attachment, a. Which node, B or D, first realizes a collision has happened? b. If B's packet is addressed to A, does A realize that a collision has happened? Explain! c. What is the jamming signal and who is going to generate it? d. Draw a graph scenario where a collision does happen, yet on

ARQs

Details: Library Research Project Use the Library, the Internet, and other resources to explain ARQs (automatic repeat requests). Discuss the purpose and the different mechanisms (such as Stop-and-wait ARQ) available. Identify and discuss the flow control methods on which they are based? What are the pros and cons of each?

Why Businesses Don't Purchse or Lease ISDN Channels

Today ISDN cost $40 per month for BRI service which includes 1 D Channel and 2 B Channels. Each channel is capable of transmitting 64kbps of voice, data, video or fax for a total of 128 kbps. Why do you think businesses don't purchase or lease ISDN channels?

Combination Boxes in MS Excel

I'm trying to find a way to build combo box for several tables. In a nutshell, I have three major categories (W. Loaders, T. Loaders, Excavators) and for each one there is a three entries of data for example: W. Loaders . Model Capacity Cycle Time D25D 4 .21 D30D 5 .22 D56D 7 .20

Create Table Statement

NOTE: You do NOT need to run/execute the script. Create a new table to be housed in the USERS01 tablespace. The table name will be PRECIOUS_METAL_PRICE and it will be used to store a history of the price of various precious metals. New rows are added to the table on a one-every-two-hours ratio. The table needs to have a re

Passing parameters

Give an example of when passing parameters by value as opposed to passing them by reference is a better technique. Now give an example of when passing parameters by reference as opposed to passing them by value is a better technique. For each example explain why you believe that technique is better than the other.

MS Excel

Your mother-in-law heard that you created the budget for the high school reunion picnic and has asked if you could help her to create a monthly household budget. She has created categories for groceries, entertainment, credit cards, mortgage, and utilities. She wants to track her expenses for a couple of months before she create

Data Conversion (8-bits to decimal)

Q1) Using 5 bits to represent each number, write the representation of 7 and -7 in 1's complement, signed magnitude, and 2's complement integers. Q2)Write the 6-bit 2's complement representation of -32. Q3) Convert these decimal numbers to 8-bit 2's complement binary numbers a. 102 b. 64 c. 33 d. -128 e. 127 Q4)If

Floor Plan Site Survey

Http://corptrain.phoenix.edu/axia/it241/ A site survey enables you to do it right the first time. Without a site survey, trial and error is the only way to place access points in locations that provide optimum signal. Conducting a site survey is one of the most critical components of properly designing and installing a wirele

Excel Spreadsheet Expense Reports

Work in Excel, do either of the following: Print this page of instructions or move back and forth between this page and Excel by clicking each application's button on the Windows taskbar 1. Click on this link Expense Report, save it on your computer in your usual work folder, and then open it in Excel. This partially compl

QPSK / Multiplexer

Need help with a QPSK / Multiplexer question. please see attached. thank you. Additional information has been provided for this question: There are 20 sources. Each source transmits at 32kbps. (This means that each source is either sending 32kbps or its sending nothing.) Each source only transmits 20% of the time. (note: i

Secure Network and Restrictive Access

Short and to the point: In order to secure the network and restrict access to sensitive information, what user groups would you create to implement the following rules? a. Each department has full access to its own information. b. The Administration department has read/write access to accounting information. c. The M

Redesign report guidelines

Given the guidelines. identify flaws in the design of the Report of Customers that follows. What assumptions about users and tasks did you make in order to assess this design? Redesign this report to correct these flaws. Report of Customers 26-Oct-07 Cust-ID Organization AC-4 A.C. Nielson Co. ADTRA-20799 Adran AL

IT Project Management-spreadsheet to calculate for giving seminar

Create a spreadsheet to calculate your projected total costs, total revenues, and total profits for giving seminar on cost estimating. Below are some of your assumptions: You will charge $600 per person for a two - day class. You estimate that 30 people will register for and attend the class, but you want to change this input.

Writing Correlated Subqueries

1. Write a correlated subquery to determine whether the data support the supposition to the following. Suppose that a table contains two nonkey columns; AdviserName and AdviserPhone. Further suppose that you suspect that AdviserPhone → AdviserName. 2. Answer question 1 but use EXISTS.

Drawing an entity relationship diagram

1. Draw the entity relationship diagram for the relationship between EMPLOYEE and JOB. Employee EMP_CODE | EMP_LNAME | JOB_CODE 14 Rudell 2 15 McDade 1 16 Ruellardo 1

SQL Statements to Move the Foreign Key to T1

Assume that tables T1 and T2 have a 1:1 relationship. Assume that T2 has the foreign key. Show the SQL statements necessary to move the foreign key to T1. Make up your own names for primary and foreign keys.

Object-oriented data-model

Draw an object-oriented data-model, with all appropriate notation, to represent the following situation. In a particular region there are a number of gardens. One attribute of GARDEN is its LOCATION. A method must be included in GARDEN to calculate its acreage (CalculateAcreage). Each garden is a collection (or assembly) of plan