Computer Science Data Transmission

What is data encoding in computer science?

• Data encoding involves compressing data to reduce its size.

• Data encoding is the process of converting data from analog to digital format.

• Data encoding in computer science is the process of converting data from one form to another for transmission, storage, or encryption purposes.

• Data encoding refers to the process of organizing data in a database.

Explain the concept of error detection in data transmission.

• Error detection in data transmission is the process of detecting and correcting errors that occur during the transmission of data from the sender to the receiver.

• Error detection ensures that data is always transmitted without any issues

• Error detection involves encrypting data during transmission

• Error detection is not necessary in data transmission

How does packet switching work in the context of data transmission?

• Data is sent as a continuous stream without any division

• Data is divided into packets, each packet is sent individually, packets can take different routes to reach the destination, and they are reassembled at the destination.

• Packets are never reassembled at the destination

• Packets always follow the same route to reach the destination

What is bandwidth management and why is it important in data transmission?

• Bandwidth management has no impact on data transmission speed.

• Bandwidth management is only necessary for small networks.

• Bandwidth management is primarily used for entertainment purposes.

• Bandwidth management is essential for maintaining network efficiency, preventing congestion, and ensuring timely delivery of data.

Which encoding technique is commonly used for error detection in data transmission?

• Horizontal Redundancy Check (HRC)

• Cyclic Redundancy Check (CRC)

• Vertical Redundancy Check (VRC)

• Longitudinal Redundancy Check (LRC)

What are the advantages of packet switching over circuit switching?

• Packet switching is more efficient, scalable, flexible, and resilient compared to circuit switching.

• Packet switching is not suitable for real-time applications.

• Packet switching does not allow for dynamic routing.

• Packet switching is slower and less reliable than circuit switching.

Discuss the role of parity bits in error detection.

• Parity bits are only used in text-based communication.

• Parity bits ensure the data is compressed before sending.

• Parity bits are used to encrypt data during transmission.

• Parity bits are used to detect errors by ensuring the total number of ones in a binary code is either even or odd, allowing for error detection during transmission.

How does bandwidth management help in optimizing data transmission?

• Bandwidth management controls data flow, prioritizes critical data, and reduces congestion.

• Bandwidth management randomly drops data packets

• Bandwidth management slows down data transmission speed

• Bandwidth management increases data transmission errors

What are the different types of errors that can occur during data transmission?

• Reflection errors

• Interference errors

• Noise errors, Attenuation errors, Distortion errors, Cross-talk errors

• Jitter errors

Explain the concept of Quality of Service (QoS) in bandwidth management.

• QoS does not involve prioritizing network traffic based on different levels of priority.

• QoS is only applicable to wired networks, not wireless networks.

• QoS in bandwidth management focuses on maximizing bandwidth usage without any prioritization.

• QoS in bandwidth management involves prioritizing network traffic to ensure consistent performance by assigning different levels of priority to data packets.