2.2 Packet Switching

2.2 Packet switching

Page 36

Multiple Choice

Why data needs to be broken down into packets to be sent from one device to the other?

• To reduce the amount of data being sent

• To prevent data from being encrypted during transmission

• To ensure the data can fit through network bandwidth limitations

• Because we like to break down everything

Match

Match each keyword with its definition.

• A section of a packet that contains the destination, the source, and the number packet.

• The actual data of the packet

• The unique address that is given to a device when its connected to a network.

• A small unit of data that is transmitted over a network

• The final section of a packet that contains error detection information.

Header

Payload

Internet Protocol address (IP)

Packet

Trailer

• Header

• Payload

• Internet Protocol address (IP)

• Packet

• Trailer

animation
https://upload.wikimedia.org/wikipedia/commons/f/f6/Packet_Switching.gif

​

Packet switching

The packets can be transmitted through different pathways across the network.

Packet switching

Multiple Choice

True or False: There is only one pathway that packets can travel through.

• True

• False

• I decide the pathway. I am the packets master.

Router

is the device that controls which pathway will be used to transmit each packet.

Draw

Activity 2.2 page 37.

Draw the pathway of each of the 5 packets using different colours:

The pathway the first packet takes is(red):

• Router 1 • Router 2.

The pathway the second packet takes is(Orange): • Router 1 • Router 4 • Router 5.

The pathway the third packet takes is(Yellow): • Router 1 • Router 3 • Router 2.

The pathway the fourth packet takes is(Green): • Router 1 • Router 4 • Router 3 • Router 5.

The pathway the fifth packet takes is(Blue): • Router 1 • Router 3 • Router 5.