Information Security & Fraud Management
Information Security & Fraud Management Interview Questions and Answers
Q1. malloc vs calloc
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
Q2. work of VISA
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
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