Data transmission

Name:

Date:

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Quick Questions

Shade in the A or B circle for each question.

1. What is data transmission?

A Deleting data from a digital system

B Sending data from one digital system to another

2. Which device is the sender when you email a photo to a friend?

A Your device, which sends the photo

B Your friend's device, which receives the photo

3. Which device is the receiver when a laptop sends a text message to a tablet?

A The laptop

B The tablet

4. Which of these can be sent by data transmission?

A Text, images, audio and video

B Only text

5. How many devices are needed for data transmission between two devices?

A Two: a sender and a receiver

B One: the sender only

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1data transmission		AThis describes storage, not transmission. Transmission means sending data to another digital system.
2sender → receiver		BThe sending of data from one digital system to another
3A phone sends a photo to a tablet, so the photo is the data being transmitted		Csend(text); send(audio); send(video)
4Data transmission between two devices can carry different kinds of data, such as text, audio and video		DData travels from the device that sends it to the device that gets it
5Data transmission is when a computer saves a file only on its own hard drive		EThe roles are mixed up. The device that sends the video (the laptop) is the sender and the phone that gets it is the receiver.
6receiver → sender: a laptop starts sending a video to a phone, so the phone is the sender		Fsender = phone; data = photo; receiver = tablet

Definitions

data transmission

Fill in the Blanks

Complete each line of code by filling in the missing parts.

____(message, receiver)

send(photo, ________)

sender = "phone" receiver = "laptop" transmit(audio, ______, receiver)

photo = "beach.jpg" send(_____, receiver)

sender.send(video) receiver._______()

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A sender = "Laptop"

B receiver == "Tablet"

C message = "Hi there"

D send(message, sender, receiver)

Question 2

A sender = "Phone"

B receiver = "Laptop"

C data_type = image

D print(sender, "sends", data_type)

Question 3

A text = "Hello"

B send(text, "Laptop", "Phone"

C print("Message sent")

Question 4

A data = "photo.jpg

B sender = "Camera"

C receiver = "Computer"

D print(sender, "sends", data)

Question 5

A sender = "Tablet"

B receiver = "Speaker"

C audio = "song.mp3"

D send(audio, receiver, sender)

E print(receiver, "got", audio)

Answer Key

Data transmission

Section A: Quick Questions

B — Sending data from one digital system to another

A — Your device, which sends the photo

B — The tablet

A — Text, images, audio and video

A — Two: a sender and a receiver

Section B: Match the Pairs

data transmission → The sending of data from one digital system to another

sender → receiver → Data travels from the device that sends it to the device that gets it

A phone sends a photo to a tablet, so the photo is the data being transmitted → sender = phone; data = photo; receiver = tablet

Data transmission between two devices can carry different kinds of data, such as text, audio and video → send(text); send(audio); send(video)

Data transmission is when a computer saves a file only on its own hard drive → This describes storage, not transmission. Transmission means sending data to another digital system.

receiver → sender: a laptop starts sending a video to a phone, so the phone is the sender → The roles are mixed up. The device that sends the video (the laptop) is the sender and the phone that gets it is the receiver.

Section C: Definitions

data transmission — The sending of data, such as text, images, audio or video, from a sender device to a receiver device.

Section D: Fill in the Blanks

send(message, receiver)

send(photo, receiver)

sender = "phone"
receiver = "laptop"
transmit(audio, sender, receiver)

photo = "beach.jpg"
send(photo, receiver)

sender.send(video)
receiver.receive()

Section E: Spot the Error

B — A single = is needed to store the receiver device in the variable. == compares values instead of assigning one. It should be receiver = "Tablet".

C — The type of data is text, so it needs quotes. Without them Python looks for a variable called image. It should be data_type = "image".

B — The send call is missing its closing bracket, so the data cannot be sent. It should end with ) like send(text, "Laptop", "Phone").

A — The text for the image file name is missing its closing quote. It should be data = "photo.jpg".

D — The sender and receiver are swapped, so the audio would travel the wrong way. It should be send(audio, sender, receiver).