Modem

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. What does a modem do?

A Converts signals so a local network can connect to an ISP

B Stores all of your files and photos permanently

2. What does ISP stand for?

A Internal system protocol

B Internet service provider

3. Which device connects your home network to the ISP?

A Monitor

B Modem

4. A home has an NBN connection. What is the modem's job?

A Connect the home network to the NBN so it can reach the ISP

B Print documents over the NBN

5. Modem vs router: which device shares the internet connection with many devices in the home?

A Router

B Modem

Match the Pairs

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

Left column		Right column
1modem		AThe company that provides your internet connection, which a modem connects your network to
2ISP		Bmodem -> router -> devices
3The modem connects the home network to the ISP over an NBN connection		CA device that converts signals so a local network can connect to an internet service provider (ISP)
4The modem brings the internet in and the router shares it with devices		DNBN line -> modem -> ISP
5The router converts signals so we can connect to the ISP.		EA modem is a device, not a company. The company that provides internet is the ISP.
6A modem is the company that gives you internet.		FThis describes the wrong device. The modem converts signals to connect to the ISP, while the router shares that connection with devices.

Definitions

modem

Fill in the Blanks

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

A modem ________ signals for the ISP

laptop -> router -> _____ -> ISP

The modem connects the network to the ___

modem -> ______ -> laptop, phone, tablet

The ___ connection plugs into the modem

Spot the Error

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

Question 1

A isp = "Telstra"

B connection = "NBN"

C modem_connects_to = router

D router_shares = True

Question 2

A isp = "Optus"

B modem = "shares to devices"

C router = "shares connection"

Question 3

A modem_on = True

B isp_connected = True

C if modem_on and isp_connected:

D print("Internet works"

Question 4

A def modem(signal):

B out = convert(signal)

C print("Sending to ISP")

D return signal

Question 5

A isp = Telstra

B modem = "converts signals"

C print("Modem links to", isp)

Answer Key

Modem

Section A: Quick Questions

A — Converts signals so a local network can connect to an ISP

B — Internet service provider

B — Modem

A — Connect the home network to the NBN so it can reach the ISP

A — Router

Section B: Match the Pairs

modem → A device that converts signals so a local network can connect to an internet service provider (ISP)

ISP → The company that provides your internet connection, which a modem connects your network to

The modem connects the home network to the ISP over an NBN connection → NBN line -> modem -> ISP

The modem brings the internet in and the router shares it with devices → modem -> router -> devices

The router converts signals so we can connect to the ISP. → This describes the wrong device. The modem converts signals to connect to the ISP, while the router shares that connection with devices.

A modem is the company that gives you internet. → A modem is a device, not a company. The company that provides internet is the ISP.

Section C: Definitions

modem — A device that converts signals so a local network can connect to an internet service provider (ISP), such as over an NBN connection. A router then shares that connection.

Section D: Fill in the Blanks

A modem converts signals for the ISP

laptop -> router -> modem -> ISP

The modem connects the network to the ISP

modem -> router -> laptop, phone, tablet

The NBN connection plugs into the modem

Section E: Spot the Error

C — A modem connects the local network to the internet service provider (ISP). It should be 'modem_connects_to = isp'. The router only shares that connection.

B — A modem converts signals so the network can connect to the ISP. Sharing the connection with devices is the router's job. It should be 'modem = "converts signals"'.

D — The closing bracket is missing from the print call. It should be ' print("Internet works")'.

D — A modem converts the signal, so it should return the converted result 'out'. Returning 'signal' gives back the unconverted original.

A — The text Telstra needs quotes to be a string. Without them Python looks for a variable called Telstra. It should be 'isp = "Telstra"'.