Wireless Sensor Networks Wsn Set 4

Electronics and Telecommunication Engineering [ENTC]

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This set of Wireless Sensor Networks (WSN) Multiple Choice Questions & Answers (MCQs) focuses on Wireless Sensor Networks Wsn Set 4

Q1 | Wireless sensor nodes are equipped with i. Sensing unit ii. Processing unit, iii. Communication unit iv. Power unit
  • i, ii, iv
  • i, iii, iv
  • i, ii, iii, iv
  • i, ii, iii
Answer: i, ii, iii, iv
Q2 | A Relay node has
  • process sensor or control equipment
  • control equipment
  • communiucation equipment
  • process sensor
Answer: communiucation equipment
Q3 | the most owerfull node is
  • sensor node
  • relay node
  • cluster head
  • gateway
Answer: gateway
Q4 | choose the correct statement
  • there may be more than one cluster in wsn.
  • there must be more than one cluster in wsn.
  • there is only one cluster in wsn.
  • none of above
Answer: there may be more than one cluster in wsn.
Q5 | In sensor networks, the nodes are of different capabilities in terms of computation, communication, memory, energy level and reliability. it is called as
  • centralized
  • heterogeneous
  • distributed
  • homogeneous
Answer: heterogeneous
Q6 | In sensor networks, the nodes are of different capabilities in terms of computation, communication, memory, energy level and reliability. it is called as
  • hierarchical
  • centralized
  • distributed
  • homogeneous
Answer: hierarchical
Q7 | A topology is a communication topology, where each node connects directly to a gateway. A single gateway can send or receive a message to a number of remote nodes.
  • star
  • tree
  • mesh
  • none of above
Answer: star
Q8 | Tree topology is also called as
  • unique star topology
  • cascaded star topology
  • unique mesh topology
  • cascaded mesh topology
Answer: cascaded star topology
Q9 | The Mesh topologies
  • unique path between pair of nodes
  • multiple path between pair of nodes
  • can not isolate and detect faults
  • none of above
Answer: multiple path between pair of nodes
Q10 | The underground wireless sensor networks are ___________ than the terrestrial WSNs
  • more expensive
  • less expensive
  • equal expensive
  • a or b
Answer: more expensive
Q11 | A Under Water WSNs has challenge of
  • a long propagation delay,
  • a limited battery that cannot be recharged or replaced.
  • a and b both
  • uses traditional communication inside water
Answer: a and b both
Q12 | Multimedia wireless sensor networks has requirements of
  • low bandwidth
  • high bandwidth
  • high energy consumption and high bandwidth
  • low energy consumption and low bandwidth
Answer: high energy consumption and high bandwidth
Q13 | The advantages of MWSN over the static wireless sensor networks include
  • better and improved coverage
  • better energy efficiency
  • superior channel capacity
  • all of above
Answer: all of above
Q14 | For bandwidth allocation,
  • available bandwidth means that the user can have a peak of bandwidth.
  • available bandwidth means that the user can have average of bandwidth.
  • available bandwidth means that the user can have a guaranteed of bandwidth.
  • none of the above
Answer: available bandwidth means that the user can have a peak of bandwidth.
Q15 | Delay is the time datagrams take from the source to destination and depends on
  • fixed delays - application delay, transmission over physical medium
  • variable delays -queuing delays, contention with other traffic at each network node.
  • transmission dealy
  • both fixed and variable delay
Answer: both fixed and variable delay
Q16 | Packet loss is, the number of packets lost in the network, via
  • errors in the physical medium
  • packet drop policies due to congestion
  • a and b both
  • non availability of connection
Answer: a and b both
Q17 | To calculate throughput, the total time was calculated as the difference between
  • the time between the first packet and last packet reached the destination
  • the time the first packet started and the time the last packet reached the destination
  • the time the first packet started and the time the last packet started
  • the time the first packet reached and the time the last packet started
Answer: the time the first packet started and the time the last packet reached the destination
Q18 | Jitter is commonly used as an indicator of
  • consistency and stability of a network.
  • consistency of a network.
  • stability of a network.
  • throughput of anetwork.
Answer: consistency and stability of a network.
Q19 | A layered architecture of WSN has a
  • base station in each layer
  • only single hop communication
  • multiple base stations
  • single powerful base station
Answer: single powerful base station
Q20 | The physical layer is responsible for
  • frequency selection,
  • modulation and data encryption.
  • both
  • modulation only
Answer: both
Q21 | The data link layer functions as a
  • pathway for multiplexing of data streams, data frame detection,
  • medium access control (mac) and error control.
  • data frame detection, medium access control
  • both a and b
Answer: both a and b
Q22 | Very limited resources for WSN refers
  • limited memory, and limited computation
  • limited power, and limited computation
  • limited memory, limited power,
  • limited memory, limited computation and limited power
Answer: limited memory, limited computation and limited power
Q23 | Wireless networks are classified as:
  • infrastructure-based networks
  • ad-hoc network
  • infrastructure-based networks and infrastructure-less (ad-hoc) networks.
  • structured network
Answer: infrastructure-based networks and infrastructure-less (ad-hoc) networks.
Q24 | Infrastructure-based networks example is
  • wlan
  • manet
  • wlan and manet both
  • none of the above
Answer: wlan
Q25 | Infrastructure-less or Ad Hoc network, example is
  • wlan
  • manet
  • wlan and manet both
  • none of the above
Answer: manet
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