Data Exchange Packet Switching

What is packet switching?

The process of breaking data into packets before sending through a network and reassembling at the destination.

Where is packet switching commonly used?

On the Internet for data transmission.

What are the three main parts of a packet?

Header, Data, and Trailer.

What does the header in a packet contain?

Addresses and packet ID to ensure correct delivery and order.

What is the purpose of the data section in a packet?

It contains the actual content or payload being transmitted.

What does the trailer in a packet do?

Used for error checking and ensuring packets are reassembled correctly.

What is VoIP?

Voice over Internet Protocol, a technology that uses packet switching to transmit audio and video over the Internet.

What role does a CODEC play in VoIP?

It encodes and decodes audio/video data into packets for transmission and reception.

Give one real-world example of packet switching.

Making a VoIP call using Teams or Zoom.

Why do packets take different routes in a network?

To optimize traffic flow and avoid congestion.

What is one advantage of packet switching for large files?

Large files can be sent without clogging the network because they are split into smaller packets.

How does packet switching improve security?

If intercepted, a hacker only gets part of the file, not the whole content.

What is one disadvantage of packet switching?

If packets are lost or corrupted, the entire file may not be received correctly.

Why is packet ID important in packet switching?

It ensures packets are reassembled in the correct order at the destination.

What happens if a packet fails error checking?

It is discarded or retransmitted to maintain data integrity.

Why does VoIP rely on packet switching?

To efficiently transmit voice and video data over IP networks.

What is the main benefit of packet switching for network efficiency?

Packets choose different routes, reducing congestion and improving speed.

What does the term 'payload' refer to in a packet?

The actual data being transmitted inside the packet.

What is the difference between circuit switching and packet switching?

Circuit switching uses a dedicated path for the entire communication, while packet switching sends data in packets over shared paths.

Why is packet switching essential for modern Internet communication?

It allows flexible, efficient, and reliable data transfer across complex networks.