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earnstyle [38]
3 years ago
7

What are some ways to accomplish full-duplex (FDX) digital communications on guided medium at the physical layer (OSI Layer 1)?

a. Separate digital receive and transmit paths onto their own physical channels/circuits b. Modulate receive and transmit channels onto different carrier frequencies, thus allowing FDX on the same physical medium c. Separate transmit and receive channels on the same physical medium by separating them in time (i.e., TDM) d. All of the above
Computers and Technology
1 answer:
labwork [276]3 years ago
6 0

Answer:

d. All of the above

Explanation:

Physical layer is the lowest layer of the OSI reference model that deals with the setup of physical connection to the network and with transmission and reception of signals.

Full duplex (FDx) is a bidirectional type of communication system where two end nodes send and receive data signals at the same time, and a single carrier is simultaneously used for dual communication.

To send or receive data, the participating nodes in a Full Duplex system do not have to wait for a free carrier/medium. It employs a medium that has at least two internal channels - one for sending and one for receiving.

Based on the above explanations, options A, B and C are valid and are correct ways to accomplish full-duplex (FDX) digital communications on guided medium at the physical layer (OSI Layer 1). There all of them are correct.

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A personal business letter is a letter that is ____.
Simora [160]

Answer:

Explanation:

One group of students did an experiment to study the movement of ocean water. The steps of the experiment are listed below.

Fill a rectangular baking glass dish with water.

Place a plastic bag with ice in the water near the left edge of the dish.

Place a lighted lamp near the left edge of the dish so that its light falls directly on the plastic bag.

Put a few drops of ink in the water.

The student did not observe any circulation of ink in the water as expected because the experiment had a flaw. Which of these statements best describes the flaw in the experiment? (2 points)

Not enough ink was added.

Not enough water was taken.

The dish was too small for the experiment.

The lamp and the ice bag were at the same place.

8 0
3 years ago
Danica is creating a flyer for her cookies that she will sell during her school fair. She wants to add a registered
White raven [17]

Answer:

Putting the insertion point where she wants the symbol.

Hope this helps!

3 0
3 years ago
Jeffrey works with a huge database of spreadsheet records each day. To organize and identify these spreadsheets, he wants to ass
mariarad [96]

Answer:

A. Document Properties

B. Permission

C. Document Options

D. File Details

The answer to this question is "File Details " . This will help Jeffrey works efficiently with a huge database of spreadsheet records each day. He can assign names to these File Details which represents each spreadsheet records. This will help his report more organized and easy to identity.

8 0
3 years ago
The operations planning practice of inputting sales forecasts into computer software that accurately predicts the amount and tim
netineya [11]

Answer:

"Materials requirement planning" is the correct answer for the above question.

Explanation:

  • The "Materials requirement planning" is a software system that is used to hold the record of the raw materials.
  • It is used to tell about the material which is present in the stocks. It also used to schedule the delivery.
  • This software is used to enhance the productivity of the company.
  • The above question asked about the software which is needed to keep the record of the raw material. This software is known as "Materials requirement planning".
3 0
3 years ago
Does a triangle with sides of lengths 1.5 ft, 2.5 ft, and 2 ft form a right triangle? How do you know?
timama [110]

Answer:

Yes, the side lengths of 1.5, 2.5, and 2 ft form a right triangle.

Explanation:

Before we solve this problem, we need to know a couple of things.

In a right triangle, you have two legs and a diagonal line that goes from one leg to the other or from one side to the other. This line is called the hypotenuse. It is the longest side of a right triangle. This length can be calculated by using a special formula that is over a thousand years old.

The formula is called the Pythagorean Theorem.

The formula states that if you square one leg and the other leg and add it up. You get the side of hypotenuse which is squared as well.

Here it is in simple terms: a^{2} +b^{2} =c^{2}.

a and b are your two legs.

C is your hypotenuse.

In this case 1.5 and 2 are your legs and 2.5 is your hypotenuse since it is the longest side.

Before we calculate, there is a converse to the Pythagorean Theorem.

If a^{2} +b^{2} \neq c^{2}, then it is not a right triangle.

Lets make 1.5 for a

and 2 for b.

We know 2.5 is for c.

Here it is.

1.5^{2} +2^{2} =2.5^{2}. The / means it is a fraction.

1.5 squared is 9/4 and 2 squared is 4. Add 4 and 9/4 and you get 25/4 squared. Take the square root of 25/4 and you get 5/2.

5/2 is equal to 2.5, so the Pythagorean Theorem applies to this triangle. Therefore, these side lengths do form a right triangle.

Hope this helps!

3 0
3 years ago
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