Information Security & Fraud Management Interview Questions and Answers

malloc and calloc are memory allocation functions in C programming language.

• malloc() allocates memory block of given size and returns a pointer to the first byte of allocated memory.

• calloc() allocates memory block of given size and initializes all bits to zero.

• malloc() does not initialize the allocated memory, which may contain garbage values.

• calloc() is slower than malloc() as it initializes all bits to zero.

• malloc() is used when we need to allocate memory for a single varia...read more

VISA is a global payments technology company that enables secure and convenient electronic payments.

• VISA provides payment solutions for consumers, businesses, and governments worldwide.

• VISA's network processes billions of transactions every year.

• VISA offers a range of products and services, including credit and debit cards, prepaid cards, and mobile payments.

• VISA works with merchants, financial institutions, and other partners to ensure secure and reliable payment processing....read more