Question

Read the text and find out whether the statements A-F is True or False. Put T if the statement is True or put F if the statement is False. A) An individual packet contains a group of data. B) A digital signal first should be transmitted into an analog one to be sent to the receiver. C) Voice conversations are often delayed. D) A Virtual Classroom enables pupils to speak to each other. E) If you want to speak, you should click a button on the screen. With the advances in network technologies, we are able to send voices over the Internet now. The way it works is that a group of data will be separated into an individual packet. These packets are then transmitted from the sender to the designated receiver through the Internet. They can take different routes in the way, but will be repackaged to the original format at the receiver's end. In case of voice transmission, since it is an analog signal, it will have to be converted into digital signals first, sent over the Internet to the receiver, and converted back to analog signals to resume the original voice. The major difference with the data transmission is that voice conversations have to be in real time, with no delays and discontinuity, so it will be just like talking on the phone. The quality is getting there with the latest VoIP technologies. Unlike a physical classroom where the teacher and students are all in the same room, in a Virtual Classroom the teacher and the students are all sitting in front of their computers. They are able to listen and speak to each other using their computers and microphones through the Internet. This is what we call a virtual classroom. It is actually very similar to a physical classroom, in that: 1. When one person speaks, the rest of the people in the room will be able to listen. 2. A student need to "raise hand" to request to speak, typically by clicking a button on the screen. 3. There will be a white board where the teacher can write down key words, sentences, and etc.​

Answer 1

Ответ:

Let's evaluate the statements:

A) An individual packet contains a group of data. - T (True)

B) A digital signal first should be transmitted into an analog one to be sent to the receiver. - T (True)

C) Voice conversations are often delayed. - F (False)

D) A Virtual Classroom enables pupils to speak to each other. - T (True)

E) If you want to speak, you should click a button on the screen. - T (True)

Statement C is false because the text mentions that voice conversations in a virtual classroom need to be in real-time with no delays and discontinuity, similar to talking on the phone. So, voice conversations in this context are not often delayed.

Answer 2

Let's go through each statement A-F and determine whether they are True or False based on the information provided in the text:

A) An individual packet contains a group of data. - True (Based on the text, data is divided into individual packets for transmission.)

B) A digital signal first should be transmitted into an analog one to be sent to the receiver. - False (According to the text, voice conversations are converted into digital signals for transmission over the Internet.)

C) Voice conversations are often delayed. - False (The text mentions that voice conversations need to be in real-time with no delays.)

D) A Virtual Classroom enables pupils to speak to each other. - True (The text states that students in a Virtual Classroom can listen and speak to each other using their computers and microphones.)

E) If you want to speak, you should click a button on the screen. - True (The text mentions that in a virtual classroom, a student typically requests to speak by clicking a button on the screen.)

F) With the advances in network technologies, we are able to send voices over the Internet now. - True (The text indicates that advances in network technologies allow for the transmission of voices over the Internet.)

So, the answers are as follows: A) True B) False C) False D) True E) True F) True