Mantra Softech Interview Questions and Answers

It asked about your basic reasoning and aptitude

Q1. Talk about your cv
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Q1. Difference between I2c & SPI
Ans. 
I2C is a synchronous serial communication protocol that allows multiple devices to be connected on the same bus. SPI is a full-duplex synchronous serial communication protocol that uses separate lines for data input and output.
• I2C uses a master-slave architecture, while SPI uses a master-slave architecture or a multi-master architecture.

• I2C uses a 7-bit or 10-bit address for device identification, while SPI uses a chip...read more
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Q1. About yourself and current organization
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Q2. Salary current and expected.
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Q1. About current organization role and responsibilities.
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Q2. How much you know about biometric industry.
Ans. 
I have a strong understanding of the biometric industry, including various technologies and applications.
• Biometric industry involves the use of unique biological characteristics for identification and authentication purposes.

• Common biometric technologies include fingerprint recognition, facial recognition, iris recognition, and voice recognition.

• Biometrics are used in various industries such as security, healthcare, fi...read more
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Q1. What are the basic terminologies used in accounting?
Ans. 
Accounting involves key terms that define financial transactions, reporting, and analysis for effective business management.
• Assets: Resources owned by a business, such as cash, inventory, and property. Example: A company's building is an asset.

• Liabilities: Obligations or debts owed by a business to external parties. Example: Loans and accounts payable are liabilities.

• Equity: The owner's claim on the assets of the busin...read more
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Q2. What are the taxes such as Goods and Services Tax (GST) and Tax Deducted at Source (TDS)?
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Q1. What is oops explain it.
Ans. 
Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• Classes are blueprints for creating objects, while objects are instances of clas...read more
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Logical things if else for while etc...

Q1. Prism- lens system design for fingerprint scanner.
Ans. 
Prism-lens system design for fingerprint scanner involves using a prism to reflect light onto a lens and then onto a sensor.
• The prism should be made of a material with high refractive index to ensure maximum reflection of light.

• The lens should be chosen based on the desired field of view and resolution.

• The sensor should be placed at the focal point of the lens to ensure sharp image capture.

• The system should be designed...read more
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Q2. Do you know PPI ( pixels per inch).
Ans. 
PPI stands for pixels per inch, which is a measure of pixel density in a display.
• PPI determines the clarity and sharpness of an image on a screen.

• Higher PPI means more pixels per inch, resulting in a clearer and sharper image.

• PPI is commonly used to describe the resolution of displays, such as computer monitors, smartphones, and televisions.

• For example, the iPhone X has a PPI of 458, while a typical computer monitor ha...read more
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Q1. Interview taken by Subject Less and unskilled doctorate person.
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Q1. He asked un related questions and i understood that he was just bluffing .
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