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fredd [130]
3 years ago
9

In step 4 of the CSMA/CA protocol, a station that successfully transmits a frame begins the protocol to transmit a second frame

at step 2, rather than step 1.What rationale could justify this procedure over simply transmitting the second frame immediately (if the channel is sensed idle)?
Computers and Technology
1 answer:
irina [24]3 years ago
4 0

Answer:

Using CSMA/CD to avoid collision.

Explanation:

If the channel is detected idle then the station does not transfer the second frame to avoid the collision by design of the CSMA/CD (Carrier sense multiple access / Collision detection). When received the protocol for first frame, a station to send second frame begins at step 2 rather than step1.

Explanation :

• Station A and Station B are transfers data frames, remain all not want to transmit data. In this situation, station A find the channel to be idle and send first frame then next second frame.  

• Similarly B received the transfer data at the same time. Then leads to collision.  

• Using CSMA/CD to avoid collision.

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What natural resources fueled industrialization in the united states?
hichkok12 [17]

Natural Resources that fueled American Industrialization

 

<span>1. Iron ore: Used to create steel and pig iron.  Used for railroad ties, bridges, buildings.</span>

 

2. Coal: with the invention of the steam engine, coal replaced wood in fueling the steam engine and machinery used in various industries such as the steel industry.

 

<span>3. Oil: The ability to use a steam engine for oil drilling started an oil boom in the United States.  It helped with the creation of a Petroleum-refining industry.  Transformed oil into Kerosene and later gasoline for the automobile</span>

 

Lumber: Used to fuel the steam engines that were used on trains, steamboats, and in industry for the new machines being invented that ran on steam.

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5 0
4 years ago
Write a program that will add up the series of numbers: 99, 98, 97… 3, 2, 1. The program should print the running total as well
Elanso [62]

Answer:

a = 99

b = 99

while(a > 0):

    b += a

    print(b)

    a -= 1

Explanation:

4 0
3 years ago
Write out a shorthand version of the border property which will apply border that is 5 px wide, colored in lightgreen, and solid
Sever21 [200]

Answer:

border: 5px solid lightgreen;

Explanation:

The shorthand version of the border property in CSS goes as follows:

 border: <line-width> <line-style> <color>;

With <line-width> represents the thicknes of the border line (expressed in keyword values or lenght values), <line-style> represents the style of the border, and <color> represents the color of the border (in color names or values).

6 0
3 years ago
You have been asked to analyze the Excel data provided by your IT department. You would like to have the ability to sort and fil
Stolb23 [73]

Answer:

Sort data in a range or table

Excel for Microsoft 365 Excel for the web Excel 2021 Excel 2019 Excel 2016 Excel 2013 More...

Sorting data is an integral part of data analysis. You might want to arrange a list of names in alphabetical order, compile a list of product inventory levels from highest to lowest, or order rows by colors or icons. Sorting data helps you quickly visualize and understand your data better, organize and find the data that you want, and ultimately make more effective decisions.

You can sort data by text (A to Z or Z to A), numbers (smallest to largest or largest to smallest), and dates and times (oldest to newest and newest to oldest) in one or more columns. You can also sort by a custom list you create (such as Large, Medium, and Small) or by format, including cell color, font color, or icon set.

Notes:

To find the top or bottom values in a range of cells or table, such as the top 10 grades or the bottom 5 sales amounts, use AutoFilter or conditional formatting.

For more information, see Filter data in an Excel table or range, and Apply conditional formatting in Excel .

WindowsWeb

Sort text

Select a cell in the column you want to sort.

On the Data tab, in the Sort & Filter group, do one of the following:

To quick sort in ascending order, click A to Z command in Excel that sorts A to Z or smallest number to largest (Sort A to Z).

To quick sort in descending order, click Z to A command in Excel that sorts Z to A or largest number to smallest (Sort Z to A).

Explanation:

5 0
2 years ago
What are barcode and rfid tags ​
Solnce55 [7]

Answer:

They are both ways to identify assets (e.g., persons, animals, objects).

Explanation:

A barcode is a bit of information (usually a number) printed as a line or block pattern on a surface (e.g., a sticker).

An RFID is a bit of computer memory with an antenna.

Both can be read with the appropriate scanner device.

7 0
3 years ago
Read 2 more answers
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