Multiplexing is used in _______*Packet switchingCircuit switchingData switchingPacket & Circuit switching

Multiplexing is used in _______

1. Packet switching
2. Circuit switching
3. Data switching
4. Packet & Circuit switching

To answer this question, we need to understand what multiplexing is and how it is used in different types of switching.

Step 1: Understand Multiplexing Multiplexing is a technique used in telecommunications and computer networks to combine multiple signals or data streams into a single transmission medium. It allows multiple users or devices to share the same communication channel efficiently.

Step 2: Understand Different Switching Types There are three main types of switching: packet switching, circuit switching, and data switching.

• Packet switching: In packet switching, data is divided into small packets and transmitted independently over the network. These packets can take different routes to reach their destination and are reassembled at the receiving end. Multiplexing is used in packet switching to combine multiple packets from different sources into a single transmission medium.

• Circuit switching: In circuit switching, a dedicated communication path is established between the sender and receiver before data transmission. This path remains open for the entire duration of the communication. Multiplexing is used in circuit switching to allocate different time slots or frequency bands to multiple users, allowing them to share the same physical communication channel.

• Data switching: Data switching refers to the process of routing data packets between different networks or devices. It can involve both packet switching and circuit switching techniques, depending on the specific requirements of the network. Multiplexing is used in data switching to efficiently manage the transmission of data packets across different networks.

Step 3: Answer the Question Based on the understanding of multiplexing and different switching types, we can conclude that multiplexing is used in all of the given options:

• Packet switching: Multiplexing is used to combine multiple packets from different sources into a single transmission medium.
• Circuit switching: Multiplexing is used to allocate different time slots or frequency bands to multiple users sharing the same physical communication channel.
• Data switching: Multiplexing is used to efficiently manage the transmission of data packets across different networks.

Therefore, the correct answer is: Packet switching, Circuit switching, Data switching, and Packet & Circuit switching.