MediaTek India Technology Interview Questions, Process, and Tips

Q1. C Coding Question addition deletion of link list
Ans. 
Addition and deletion operations in a linked list using C coding
• Use a struct to define the linked list node

• For addition, allocate memory for new node, update pointers accordingly

• For deletion, update pointers to skip the node to be deleted
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Q2. Diff between malloc and calloc
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malloc is used to allocate memory without initializing it, while calloc is used to allocate memory and initialize it to zero.
• malloc allocates a block of memory of specified size, while calloc allocates a block of memory for an array of elements and initializes them to zero

• malloc does not initialize the allocated memory, while calloc initializes the allocated memory to zero

• malloc returns a pointer to the allocated memor...read more
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Q3. 2G3G registration process,
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Q4. Authentication parameter, CKSN
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I interviewed with Mediatek having just 1 year of experience. It was for outsourcing position.

They asked me concepts from C language, writing code for data structures (LinkedIn list), and a question on string which I can't remember. This was pre COVID days.

Q1. Write code to insert a node to the middle of linked list
Ans. 
Insert a node to the middle of a linked list
• Find the middle node using slow and fast pointers

• Create a new node with the data to be inserted

• Adjust the pointers to insert the new node in the middle
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Had Aptitude and VLSI-Based Questions

Q1. You have a 3 ltr jug and 5 ltr jug measure 4lt water using this.
Ans. 
Use the 3 ltr jug to fill the 5 ltr jug twice, leaving 1 ltr in the 3 ltr jug. Then fill the 3 ltr jug and pour it into the 5 ltr jug.
• Fill the 5 ltr jug twice with the 3 ltr jug

• 1 ltr will be left in the 3 ltr jug

• Fill the 3 ltr jug and pour it into the 5 ltr jug

• 4 ltr of water will be in the 5 ltr jug
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Q2. The same question, but now do it starting with the 3ltr jug.
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Some simple string swap in C

Multiple questions on various data structures like arrays , linked lists

Q1. Questions on pointers and bit manipulation
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Q2. Derefer a null pointer
Ans. 
Dereferencing a null pointer means trying to access the memory location pointed to by a null pointer.
• Dereferencing a null pointer can lead to a segmentation fault or access violation.

• Example: int *ptr = NULL; int value = *ptr; // This will result in a segmentation fault.
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Q3. Pointer arithmetic
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Q4. Double pointers
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