1. A signal starts at point x. As it travels to point y it loses 8 db. At point y the signal is boosted by 10 db. As the signal travels to point z it loses 7 db. What is the db strength of the signal at point z? 2. What is the decibel loss of a signal that starts at point A with a strength of 2000 watts and ends at point B wi
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
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
Average waiting time for constant-length messages and for exponentially distributed length messages, Mean waiting time in the switching center, Mean time to send a frame
I. Messages arrive at random to be sent across a communications link with a data rate of 9600 bps. The link is 70% utilized, and the average message length is 1000 octets. Determine the average waiting time for constant-length messages and for exponentially distributed length messages II. Messages arrive at a switching center
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
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 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
When sending the same message as 5, 10 or 20 packets, which option will minimize the transmission time?
You want to send a 200 bytes long message from your machine to a friend's machine via 4 intermediate nodes. You are required to use a header size of 5 bytes per packet. You have the option of sending the message as 5 packets, as 10 packets and as 20 packets. Which of these three options minimizes the transmission time? What is t
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
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
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
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?
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?
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
Determine appropriate situations for using integrated services digital network (ISDN) connection services
ISDNs are sometimes used in locations that do not support DSL or cable modem connections. Your choices may be analog modems or an ISDN connection in those remote locations. Describe three benefits ISDNs have over regular dial-up modem connections.
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
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.
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
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
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
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
If an address bus needs to be able to address eight devices, how many conductors will be required? What if each of those devices also needs to be able to talk back to the I/O control device? Would it be 8 since each data line carries one byte of information?
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
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
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
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.
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.
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
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.
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