Ubicom interview questions

Tell me about yourself? There is an array which contains double number, How can you remove them with efficiency coding? Link List question typedef struct Node{ Node *Next; int Val; }; if a.Val > b.Val return 1; if a.Val == b.Val return 0; if a.Val < b.Val return -1; implement insert function, void insert(Node **node, int function(node a, int node b)) { } What is your communication's protocols endianness? What is the MMU? Lets consider an Interrupt service routine system, which receive a character when occurred interrupt? Implement Circular buffer system?