Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. Which module of OpenCV includes 3D reconstruction and calibration? core
callin3D
imgproc
viz

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2. How many nodes can twisted-pair cables host to the maximum? 64
1024
1064
32

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3. Which GPIO acts as Recievers(RX)? GPIO17
GPIO13
GPIO15
GPIO16

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4. LPF in images filtering process is used for _______? Edge detection
Blurring image
Sharping the image
Filtering the image

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5. Which layer has full-duplex and half-duplex modes of operation? Session layer
Presentation layer
Transport layer
Data link layer

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6. The histogram is extracted from _______ values? Numerical
Octal
Decimal
Binary

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7. Which two GPIO pins have fixed pull up resistors? GPIO25 & GPIO5
GPIO2 & GPIO3
GPIO20 & GPIO19
GPIO15 & GPIO18

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8. Which command to user to know the current directory you are working on? curdir
wd
pwd
ls

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9. What function is used to detect a face from an image that the user loads as an input? minNeighbors
detectMultiScale
face_extracter()
cropped_face

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10. What is the name of the trained output file? Trained.jpg
Trained.yml
Trained.xml
Trained.doc

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