Preview Questions Remote Sensing Specialist | Role Specific Skill

Question 1: Which satellite sensor is best suited for detecting water pollution from chemical spills in oceans?

Which action should you take?

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Landsat-8 OLI

Sentinel-2 MSI

WorldView-3

MODIS

Question 2: What type of remote sensing data would be most suitable for detecting illegal fishing activities in marine protected areas?

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Thermal infrared imaging to detect oil spills

Satellite imagery with temporal analysis of vessel locations

UV spectrometry for chemical analysis

Passive microwave sensing to detect water turbidity

Question 3: In remote sensing, what method is most suitable for analyzing time-series data to detect land cover change?

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Change detection algorithm

Decision tree analysis

Principal Component Analysis (PCA)

K-means clustering

Question 4: Which remote sensing index is commonly used for monitoring vegetation health in environmental monitoring?

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GNDVI (Green Normalized Difference Vegetation Index)

NDVI (Normalized Difference Vegetation Index)

EVI (Enhanced Vegetation Index)

SAVI (Soil Adjusted Vegetation Index)

Question 5: Which spectral range in remote sensing is most effective for monitoring water quality in lakes and rivers?

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Microwave bands

Ultraviolet bands

Near-infrared and visible bands

Thermal infrared bands

Question 6: In remote sensing data analysis, K-means clustering is used to group similar pixels into distinct classes. What is the main limitation of this approach?

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It requires the user to specify the number of clusters in advance

It is not suitable for large datasets

It does not handle high-dimensional data well

It is computationally expensive