Compare and Contrast Circuit switching and packet switching. 5Mc.

To compare and contrast circuit switching and packet switching, we will examine their characteristics and functionalities.

1. Circuit Switching:

• In circuit switching, a dedicated communication path is established between the sender and receiver before data transmission.
• The path remains open for the entire duration of the communication session.
• The resources, such as bandwidth, are reserved exclusively for the established connection.
• The connection is maintained even if there is no data transmission, resulting in a constant allocation of resources.
• Examples of circuit-switched networks include traditional telephone networks.

2. Packet Switching:

• In packet switching, data is divided into small packets before transmission.
• Each packet is individually addressed and can take different routes to reach the destination.
• Packets can be transmitted independently and reassembled at the receiver's end.
• Resources are shared among multiple connections, and bandwidth is allocated dynamically based on demand.
• Examples of packet-switched networks include the Internet.

Now, let's compare and contrast these two switching techniques:

1. Connection Establishment:

• Circuit switching requires the establishment of a dedicated connection before data transmission, while packet switching does not require a pre-established connection.

2. Resource Allocation:

• Circuit switching reserves resources for the entire duration of the communication session, even if there is no data transmission. In contrast, packet switching dynamically allocates resources based on demand.

3. Efficiency:

• Circuit switching is more efficient for continuous data transmission, such as voice calls, as it guarantees a constant allocation of resources. Packet switching is more efficient for bursty data transmission, as resources are allocated on-demand.

4. Delay:

• Circuit switching introduces a fixed delay during connection establishment, but once established, the delay remains constant. Packet switching introduces variable delays due to packet routing and potential congestion.

5. Flexibility:

• Circuit switching is less flexible as it requires a dedicated connection for the entire session. Packet switching allows for more flexibility as packets can take different routes and be transmitted independently.

In conclusion, circuit switching and packet switching have different characteristics and functionalities. Circuit switching provides a dedicated connection with constant resource allocation, while packet switching offers flexibility and dynamic resource allocation. The choice between the two depends on the nature of the communication and the requirements of the network.