Router

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. What is the main job of a router?

A Directs data between networks

B Stores files for a computer

2. Which device connects a home LAN to the internet?

A Keyboard

B Router

3. When data packets travel across networks, what does a router do?

A Chooses the path the packets take

B Turns the packets into paper copies

4. A home Wi-Fi router can share the internet connection wirelessly.

A False

B True

5. Which two networks does a home router usually join together?

A A home LAN and the internet

B A keyboard and a monitor

Match the Pairs

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

Left column		Right column
1router		Apacket -> router -> best path
2home Wi-Fi router		BLAN <-> router <-> internet
3A router connects a LAN to the internet		CA router joins different networks, such as a home LAN and the internet. It is not limited to devices inside one LAN.
4A router chooses the path each data packet takes		DA router does not store files. It directs data packets between networks and chooses their path.
5A router only joins two devices in the same LAN, never the internet		EA device that directs data between networks, such as a home LAN and the internet
6A router stores all the files for the network		FA router that shares the internet connection wirelessly with devices in the home

Definitions

router

Fill in the Blanks

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

A ______ directs data between networks

home LAN -> router -> ________

A router chooses the ____ for each packet

_____ router shares internet wirelessly

Devices on a ___ connect to the router

Spot the Error

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

Question 1

A packet arrives at router

B read destination IP address

C ignore the path for packet

D send packet along that path

Question 2

A home LAN has laptop and phone

B router joins LAN to a monitor

C internet gives LAN web access

Question 3

A device = keyboard

B job = direct data

C joins = LAN and internet

Question 4

A home Wi-Fi router prints pages

B phone connects wirelessly

C laptop connects wirelessly

Question 5

A packets = ['a', 'b', 'c']

B for p in packets:

C send_to_best_path(p

D print('done')

Answer Key

Router

Section A: Quick Questions

A — Directs data between networks

B — Router

A — Chooses the path the packets take

B — True

A — A home LAN and the internet

Section B: Match the Pairs

router → A device that directs data between networks, such as a home LAN and the internet

home Wi-Fi router → A router that shares the internet connection wirelessly with devices in the home

A router connects a LAN to the internet → LAN <-> router <-> internet

A router chooses the path each data packet takes → packet -> router -> best path

A router only joins two devices in the same LAN, never the internet → A router joins different networks, such as a home LAN and the internet. It is not limited to devices inside one LAN.

A router stores all the files for the network → A router does not store files. It directs data packets between networks and chooses their path.

Section C: Definitions

router — A device that directs data between networks, such as joining a home LAN to the internet and choosing the path data packets take. A home Wi-Fi router also shares the connection wirelessly.

Section D: Fill in the Blanks

A router directs data between networks

home LAN -> router -> internet

A router chooses the path for each packet

Wi-Fi router shares internet wirelessly

Devices on a LAN connect to the router

Section E: Spot the Error

C — A router chooses a path for each data packet. Line 3 should say 'choose best path for packet', not ignore the path.

B — A router joins a LAN to the internet, not to a monitor. Line 2 should be 'router joins LAN to internet'.

A — The device that directs data between networks is a router, not a keyboard. Line 1 should be 'device = router'.

A — A home Wi-Fi router shares the internet connection wirelessly. It does not print pages. Line 1 should be 'home Wi-Fi router shares net'.

C — The function call is missing its closing bracket. Line 3 should be ' send_to_best_path(p)'.