Infineon Technologies Senior Engineer Interview Questions and Answers

Q1. Questions about memory segments and compiler optimisations
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Q2. Question about controller architecture
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Q1. Question about memory allocation of variables from a code snippet
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Practice on hackerrank, they send hackerrank link for screening round.

Q1. C, os, embedded questions
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Q1. C, data structures,os
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Q1. Previous jobs, salary discussion, relocation
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Q1. Find the length of longest common subsequence in given strings.
Ans. 
The length of the longest common subsequence in given strings is found using dynamic programming.
• Use dynamic programming to find the length of the longest common subsequence.

• Compare characters of the strings and build a matrix to store the lengths of common subsequences.

• Traverse the matrix to find the length of the longest common subsequence.
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Q2. A basic DFS based graph question.
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Write the algorithm for topological sorting.

Q1. Basic system design questions.
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Q2. Explain CAP theorem.
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CAP theorem states that in a distributed system, it is impossible to simultaneously guarantee consistency, availability, and partition tolerance.
• Consistency: All nodes in the system have the same data at the same time.

• Availability: Every request gets a response, even if some nodes are down.

• Partition Tolerance: The system continues to operate despite network partitions.

• In a distributed system, you can only achieve two o...read more
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Q1. Explain your previous projects .
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Q1. What is VLSI design cycle ?
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VLSI design cycle is the process of creating integrated circuits by going through various stages from design to fabrication.
• VLSI design cycle involves stages like specification, design, verification, synthesis, and fabrication.

• It starts with defining the requirements and specifications of the integrated circuit.

• Design phase includes logic design, circuit design, and physical design.

• Verification ensures that the design ...read more
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Q2. FIFO Pipeline depth calculation
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Q1. Verilog code debug question
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Q1. Coding question on dll and bits
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Q2. Detect and remove loop in ll
Ans. 
To detect and remove a loop in a linked list, we can use Floyd's Cycle Detection Algorithm.
• Use two pointers, slow and fast, to traverse the linked list

• If there is a loop, the fast pointer will eventually meet the slow pointer

• Once the loop is detected, reset one of the pointers to the head and move both pointers at the same pace until they meet again to find the start of the loop
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Q1. What is virtual function?
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A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function in a derived class.
• Virtual functions allow a derived class to provide a specific implementation of a function that is already defined in a base class.

• They enable polymorphism, where a pointer to a base class can be used to call a function in a derived class.

• Virtual functions are used in obje...read more
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Q2. What is android boot up sequence
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Android boot up sequence involves several stages including power on, bootloader, kernel initialization, and system initialization.
• Power on the device

• Bootloader loads the kernel

• Kernel initializes the system

• System initialization completes the boot up process
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Q3. Question about the recent projects
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Q4. What is inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class (subclass) inherits attributes and methods from a base class (superclass)

• Can have multiple levels of inheritance (multi-level inheritance)

• Example: Animal class can be a base class with properties like name a...read more
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Q5. What is polymorphism
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Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types.

• Examples include method overloading and method overriding in object-oriented programming.
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