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Bosch Global Software Technologies

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10+ Skill Lync Interview Questions and Answers

Updated 9 Jul 2024
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Q1. Why are you interested in the field of embedded software development?

Ans.

I am fascinated by the challenge of working with low-level hardware and creating efficient, real-time systems.

  • Enjoy the challenge of working with low-level hardware

  • Excited about creating efficient, real-time systems

  • Passionate about developing innovative solutions for embedded systems

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Q2. Why can bus uses 120 ohm resistance

Ans.

120 ohm resistance is used in CAN bus to match the characteristic impedance of the transmission line.

  • CAN bus is a differential signaling system that requires a balanced impedance to prevent signal reflections.

  • The 120 ohm resistance matches the characteristic impedance of the transmission line, which is typically 120 ohms.

  • Without the proper impedance matching, signal reflections can cause data errors and reduce the maximum communication distance.

  • The 120 ohm resistance is typic...read more

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Q3. What is the principle of analog to digital converter?

Ans.

An analog to digital converter converts continuous analog signals into discrete digital values.

  • Converts continuous analog signals into digital values

  • Utilizes sampling and quantization techniques

  • Common types include successive approximation ADC and delta-sigma ADC

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Q4. How keyboard mapping works in a microcontroller?

Ans.

Keyboard mapping in a microcontroller involves assigning specific key codes to each key on the keyboard.

  • Keyboard mapping is typically done using a lookup table that maps physical key presses to corresponding key codes.

  • The microcontroller reads the key code when a key is pressed and sends it to the computer for processing.

  • Keyboards may use different mapping standards such as ASCII or HID.

  • Custom keyboard mappings can also be implemented for specific applications or languages.

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Q5. Difference between normal can and extended can

Ans.

CAN is a communication protocol used in automotive and industrial applications. Normal CAN has 11-bit identifier while Extended CAN has 29-bit identifier.

  • Normal CAN has 11-bit identifier while Extended CAN has 29-bit identifier.

  • Extended CAN allows for more unique identifiers, enabling more devices to communicate on the same network.

  • Normal CAN has a maximum data rate of 1 Mbps while Extended CAN has a maximum data rate of 8 Mbps.

  • Extended CAN is typically used in applications w...read more

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Q6. Types of error messages in CAN protocol

Ans.

Types of error messages in CAN protocol

  • Bit Error: Error in a single bit of the message

  • Stuff Error: Error in the stuffing bits

  • CRC Error: Error in the cyclic redundancy check

  • Form Error: Error in the message format

  • Acknowledge Error: Error in the acknowledgement of the message

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Q7. Bit arbitration and its significance

Ans.

Bit arbitration is the process of resolving conflicts when multiple devices try to access the same bus simultaneously.

  • Bit arbitration is important in multi-master systems where multiple devices can initiate data transfer.

  • It ensures that only one device gains control of the bus at a time.

  • Different arbitration schemes include priority-based, round-robin, and collision detection.

  • For example, in a CAN bus system, the device with the highest priority message gets to transmit first...read more

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Q8. What is CAN protocol?

Ans.

CAN protocol stands for Controller Area Network protocol, used for communication between microcontrollers and devices in automotive and industrial applications.

  • CAN protocol is a robust and reliable communication protocol used in automotive and industrial applications.

  • It allows multiple microcontrollers to communicate with each other without a host computer.

  • CAN protocol uses a differential signaling scheme to reduce electromagnetic interference.

  • It supports message prioritizati...read more

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Q9. What is binary coded decimal?

Ans.

Binary Coded Decimal (BCD) is a way of representing decimal numbers using a binary code.

  • BCD uses four bits to represent each decimal digit.

  • Each decimal digit is represented by its binary equivalent.

  • For example, the decimal number 25 is represented in BCD as 0010 0101.

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Q10. Explain diagnostic protocols

Ans.

Diagnostic protocols are a set of rules and procedures used to identify and troubleshoot problems in a system.

  • Diagnostic protocols are used in various fields such as automotive, medical, and computer networking.

  • They involve a series of tests and measurements to identify the root cause of a problem.

  • Diagnostic protocols can be manual or automated, depending on the complexity of the system.

  • Examples of diagnostic protocols include OBD-II in automotive, SNMP in networking, and ELI...read more

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