Surprise Quiz 2 on Smart and Wireless Instrumentation

Identify the protocol among the following which is known for its flexible duty-cycling mechanism.

• SMAC

• BMAC

• CSMA

• TDMA

If a sensor network designer needs to prioritize energy efficiency and reduce idle listening time, which protocol should they consider?

• TDMA

• IEEE 802.11

• SMAC

• SDMA

The IEEE 802.15.4 standard is mainly used for:

• High-speed data transmission

• Long-range communication

• Low-rate wireless personal area networks (LR-WPAN)

• Broadband networking

In a WSN that uses a wake-up radio, the primary benefit is:

• Improved data encryption

• Reduced transmission speed

• Extended battery life

• Increased data packet size

A common technique to reduce energy waste in MAC protocols for WSNs is to:

• Increase network packet size

• Implement duty cycling

• Reduce network latency

• Apply higher power levels

If a WSN node's battery life is a critical factor, which communication protocol would be most suitable to minimize energy consumption?

• Wi-Fi

• Bluetooth

• Zigbee

• Ethernet

Which aspect of B-MAC can be configured to balance energy consumption and latency?

• Transmission power

• Preamble Length

• Node Spacing

• Packet Size

In a scenario where nodes need to stay active longer due to fluctuating network demand, how might the MAC protocol adjust its operations?

• Increase the duty cycle

• Decrease preamble length

• Increase packet transmission power

• Apply more restrictive sleep schedules

ZigBee extends IEEE 802.15.4 by adding functionalities at higher layers. How does this impact its use in WSNs?

• It allows for direct continuous data streaming

• It provides support for routing and application services

• It limits the network to single-hop connections

• It uses excessive energy for minimal data transfer

When deploying the Median Device Protocol in a highly dynamic WSN, what potential challenge might arise?

• Reduced flexibility for real-time data collection

• Increased latency in high-density node areas

• Excessive idle listening

• Continuous power drain across all nodes