Packet Switch Data Communication Network

What are the switching techniques used in packet networks?

• Time switching

• Cell switching

• Frequency switching

• Circuit switching, message switching, and packet switching

Explain the difference between packet switching and circuit switching.

• Packet switching involves sending data in large continuous streams, while circuit switching sends data in small packets.

• Packet switching is more reliable than circuit switching due to its dedicated paths for communication.

• Packet switching involves breaking data into packets that travel independently, while circuit switching sets up a dedicated communication path.

• Packet switching does not require a network to be established before data transfer, while circuit switching does.

How is data transmitted in packet networks?

• Data is transmitted in packet networks by using a single central server to relay all data

• Data is transmitted in packet networks by breaking the information into small packets, each containing a portion of the data along with the necessary addressing information. These packets are then sent individually across the network and reassembled at the destination.

• Data is transmitted in packet networks by sending the entire information in one large packet

• Data is transmitted in packet networks by converting the information into analog signals

Discuss the advantages of packet switching over circuit switching.

• Packet switching is advantageous over circuit switching due to its efficient resource utilization, dynamic routing capabilities, scalability, and flexibility.

• Packet switching is less reliable than circuit switching

• Packet switching is slower than circuit switching

• Packet switching does not allow for dynamic routing

What is a packet in the context of data communication?

• A packet is a type of computer virus

• A packet is a physical storage device

• A packet is a unit of data transmitted over a network, consisting of a header and a payload.

• A packet is a software application used for video editing

What is the role of routers in packet-switched networks?

• Routers forward data packets between networks.

• Routers regulate internet speed for users.

• Routers encrypt data packets in transit.

• Routers manage physical connections between devices.

What is the significance of packet headers in packet-switched networks?

• Packet headers in packet-switched networks are significant as they contain essential information for routing and delivering data packets.

• Packet headers are irrelevant and do not impact data transmission in packet-switched networks.

• Packet headers are designed to slow down data transmission in packet-switched networks.

• Packet headers are only used for error checking in packet-switched networks.

Explain the concept of virtual circuits in packet switching.

• Virtual circuits randomly shuffle packets to ensure delivery

• Virtual circuits do not impact the order of packet delivery

• Virtual circuits are only used in circuit switching, not packet switching

• Virtual circuits ensure that packets are delivered in order and without errors by assigning a specific route for them to travel, similar to a dedicated physical circuit.