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WorksheetsWireless Networks Quiz 2
Total questions: 20
Worksheet time: 15mins
Which of the following is true for WSNs?
Co-operative sensing, collection, and processing
Multi-hop and Self-organizing
Communicates through a coordinator
Can sense physical parameters (temperature, light, etc.)
Which of the following are necessary components of a WSN Device/Node?
Sensing Unit
Transceiver
Power Generator
Power Unit
The challenges of creating a WSN, DOES NOT include -
Energy Efficiency
Very costly nodes
Limited Storage
Limited Computational Power
How many types of Sensor Network Architectures are there?
2
3
4
5
Which WSN architecture has nodes distributed into different layers?
Clustered Architecture
Layered Architecture
Single-Tower Architecture
Wireless Networks are divided into Infrastructured and Ad Hoc, based on -
Presence of Coordinator
Presence of wire
Presence of Infrastructure
Characteristics of a MANET are -
Error Prone network
Presence of static nodes
Failure Prone Network
Without Centralized Control
Which of the following is NOT addressed by DTN?
Long delays
Sensing the environment
Storing data packets
Absence of end-to-end route
What are some of the challenges of DTN?
Limited Capacity
Short Battery Lifetime
Very expensive nodes
Packet loss due to errors
Which of the following is an example of both a WSN and a DTN?
VANET
ZebraNet
Precision Agriculture
Great Duck Island
Which of the following is the origin of DTNs?
Loss of communication during disasters
Vehicular Networks
Interplanetary Communication
Wildlife Monitoring
VANET is -
Constrained by fast topology changes
Can connect to other networks
A sub-class of MANET
Consisting of all static nodes
VANETs connect to the Internet through the use of -
Their own antenna
Roadside Units (RSU)
WiFi
SDN decouples/divides the network layer into -
Control plane
Null plane
Data plane
Network plane
The control plane of SDNs consist of -
Switches
Routers
Access Points
Controllers
Compared to SDN switches, controllers -
Have more processing power
Forward Packets
Take all the decisions
Query for new routes
How do SDN switches deal with new packets?
Forward based on routing protocols
Forward immediately
Ask controller for direction
Drops packet without doing anything
SDNs have the following which traditional networks do not have -
A fixed number of controllers
Switches for forwarding data
Multiple subnetworks or clusters
Simplicity of switches
Dividing a network into multiple clusters and placing controllers in each cluster is called -
Software-Defined Networks (SDN)
Controller Placement Problem (CPP)
Clustering of the network
Which of the following are limitations of SDNs?
Switches are very costly
Switches cannot take decisions themselves
Changing the entire network is not feasible
Controllers take all the decisions
