Network switch

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. A network switch sends data only to the device it is meant for.

A False

B True

2. Which device connects computers on the same network?

A Network switch

B Monitor

3. What do you plug a network cable into on a switch?

A A keyboard

B A port

4. Which device links different networks together?

A Router

B Switch

5. A school computer lab has 30 wired computers on one network. What helps connect them to each other?

A A switch

B A webcam

Match the Pairs

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

Left column		Right column
1switch.port(3)		Arouter.link(school_lan, internet)
2switch.send(data, to="Printer")		Bswitch.connect(lab_pc1, lab_pc2, lab_printer)
3A switch connects devices on the same network, such as computers in a school lab		CA socket on the switch where one device is plugged in with a cable
4A router links different networks, but a switch only links devices within one network		DThe switch passes data only to the device it is meant for, not to every device
5switch.send(data, to="everyone")		EA switch does not send data to every device. It sends data only to the device it is meant for.
6switch.link(school_lan, internet)		FA switch does not link different networks. Linking a school network to the internet is the job of a router.

Definitions

network switch

Fill in the Blanks

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

connect(laptop, ______)

switch.forward(data, ____)

______.link(school_lan, internet)

for device in ports: if device __ target: send(data, device)

connect(pc, _____, switch)

Spot the Error

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

Question 1

A devices = 4

B ports = 8

C free_ports = ports + devices

D print(free_ports)

Question 2

A packet = get_packet()

B dest = packet.to

C port = ports[dest]

D send_all(ports, packet)

Question 3

A switch = Switch()

B switch.connect(laptop, 1

C switch.connect(printer, 2)

Question 4

A if dest in lan:

B use_switch(dest)

C else:

D use_switch(dest)

Question 5

A print('Switch ports:')

B 8 = ports

C print(ports)

Answer Key

Network switch

Section A: Quick Questions

B — True

A — Network switch

B — A port

A — Router

A — A switch

Section B: Match the Pairs

switch.port(3) → A socket on the switch where one device is plugged in with a cable

switch.send(data, to="Printer") → The switch passes data only to the device it is meant for, not to every device

A switch connects devices on the same network, such as computers in a school lab → switch.connect(lab_pc1, lab_pc2, lab_printer)

A router links different networks, but a switch only links devices within one network → router.link(school_lan, internet)

switch.send(data, to="everyone") → A switch does not send data to every device. It sends data only to the device it is meant for.

switch.link(school_lan, internet) → A switch does not link different networks. Linking a school network to the internet is the job of a router.

Section C: Definitions

network switch — A device that connects computers on the same network and sends data only to the device it is meant for, using its ports. A router links different networks.

Section D: Fill in the Blanks

connect(laptop, switch)

switch.forward(data, port)

router.link(school_lan, internet)

for device in ports:
    if device == target:
        send(data, device)

connect(pc, cable, switch)

Section E: Spot the Error

C — Free ports are the ports left after devices are plugged in, so you subtract devices from ports. It should be ports - devices.

D — A switch sends data only to the port of the device it is meant for. Sending to every port is not how a switch works. It should be send(port, packet).

B — The closing bracket is missing, so the call is a syntax error. It should be switch.connect(laptop, 1).

D — A switch only connects devices on the same network. Data for a different network must go through a router, so the else branch should be use_router(dest).

B — A variable name goes on the left of = and the value goes on the right. It should be ports = 8.