Final answer:
The statement 'A dedicated path is followed throughout the session' is not true for packet switching as it allows data packets to take various paths to reach the destination, unlike circuit switching which maintains a dedicated path.
Step-by-step explanation:
The correct answer to the question about which statement is not true for packet switching is: d. A dedicated path is followed throughout the session. Unlike circuit switching, packet switching does not maintain a dedicated path for the duration of a communication session. Instead, data is broken down into packets, each of which may take a different route to the destination, based on real-time network conditions. This makes packet switching highly efficient and flexible.
Option a refers to the role of protocols in delivering packets, which can become complex but are necessary for ensuring packets reach their destination correctly. Option b suggests that the installation costs of packet switching networks can be high, which may be due to the sophisticated equipment and infrastructure required. Option c correctly states that multiple users can share the same network resources simultaneously in a packet-switched network, as the data is transmitted in small packets that can interleave on the same channel.