Wired transmission

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Quick Questions

Shade in the A or B circle for each question.

1. How does wired transmission send data?

A As signals along a physical cable

B As signals through the air with no cable

2. Which of these is a wired connection?

A A device joined to Wi-Fi

B An Ethernet cable plugged into a computer

3. You plug a USB cable from a printer into a computer. What kind of transmission is this?

A Wired transmission

B Wireless transmission

4. What does a fibre optic cable use to carry data?

A Pulses of light

B Radio waves

5. Which cable can carry data very quickly over long distances using light?

A USB cable

B Fibre optic cable

Match the Pairs

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

Left column		Right column
1Ethernet cable		AFibre optic cables send data as pulses of light, not electricity. Electrical signals are used in cables like Ethernet.
2fibre optic cable		BUSB cable: phone -> computer
3A USB cable is a physical wire that carries data signals between a device and a computer		CThis shows wireless transmission. Wired transmission needs a physical cable, such as Ethernet, between the devices.
4Wired connections are usually fast and reliable because the signal stays inside the cable		DA wired link that carries data as electrical signals between a computer and a router or switch
5Fibre optic cable: data travels as electricity		EA cable that sends data as pulses of light along thin strands of glass
6Wired transmission: phone -> Wi-Fi -> router		FEthernet cable = fast + reliable

Definitions

wired transmission

Fill in the Blanks

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

Wired transmission sends data along a _____

Fibre optic cables send data as _____

A ___ cable connects a device to a computer

An ________ cable joins a PC to a router

Wired connections carry data as _______

Spot the Error

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

Question 1

A cable = "Ethernet"

B signal = "light"

C speed = "fast"

D print(cable, signal)

Question 2

A cable = fibre optic

B signal = "light"

C print(cable, signal)

Question 3

A cable = "USB"

B connected = True

C if connected = True:

D print("Data can flow")

Question 4

A cable = "Ethernet"

B speed = 1000

C unit = "Mbps"

D print(cable, speed, unit

Question 5

A cable = "fibre optic"

B if cable == "fibre optic":

C signal = "light"

D else

E signal = "electricity"

Answer Key

Wired transmission

Section A: Quick Questions

A — As signals along a physical cable

B — An Ethernet cable plugged into a computer

A — Wired transmission

A — Pulses of light

B — Fibre optic cable

Section B: Match the Pairs

Ethernet cable → A wired link that carries data as electrical signals between a computer and a router or switch

fibre optic cable → A cable that sends data as pulses of light along thin strands of glass

A USB cable is a physical wire that carries data signals between a device and a computer → USB cable: phone -> computer

Wired connections are usually fast and reliable because the signal stays inside the cable → Ethernet cable = fast + reliable

Fibre optic cable: data travels as electricity → Fibre optic cables send data as pulses of light, not electricity. Electrical signals are used in cables like Ethernet.

Wired transmission: phone -> Wi-Fi -> router → This shows wireless transmission. Wired transmission needs a physical cable, such as Ethernet, between the devices.

Section C: Definitions

wired transmission — Sending data as signals along a physical cable, such as a USB, Ethernet or fibre optic cable. Wired links are usually fast and reliable.

Section D: Fill in the Blanks

Wired transmission sends data along a cable

Fibre optic cables send data as light

A USB cable connects a device to a computer

An Ethernet cable joins a PC to a router

Wired connections carry data as signals

Section E: Spot the Error

B — An Ethernet cable sends electrical signals along copper wires. Light signals are used in fibre optic cables. The line should be signal = "electrical".

A — Text must be written as a string in quotes. It should be cable = "fibre optic".

C — A single = assigns a value. An if statement compares with ==. It should be if connected == True:.

D — The print call is missing its closing bracket. It should be print(cable, speed, unit).

D — An else statement must end with a colon. It should be else:.