What is the difference between circuit and packet switching?

A circuit needs to be established to make sure that data transmission takes place.

A uniform path is followed throughout the session.

Resources are reserved for the duration of the communication session.

A constant transmission rate is reserved in the network line for the duration of the connection.

Suitable Situation: It is most ideal for voice communication, while also keeping the delay uniform.

Example: audio call

Each packet goes through a dynamic route to the destination.

There is no uniform path that is followed end-to-end through the session.

Resources are not reserved for the duration of the communication session.

A constant transmission rate is not reserved.

Suitable Situation: It is used mainly for data transmission where delays are acceptable.

Example: Internet and emails