Questions

VPN's are implemented to provide a secure connection through public networks. A virtual private network extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network.

Glass Box (or white box) testing is the process of giving i/p to the system and checking how the system processes i/p to generate o/p

Black Box testing is the process of giving i/p to the system and checking if the system is giving correct o/p without bothering how the o/p is generated.

As we can see from the definitions, the role of black box testing is to ensure that the o/p generated is correct. And role of white box testing is to ensure that methods used to generate the o/p are correct.

Protein synthesis take place in the cytoplasm where ribosomes are located as they are the machinery which are responsible for the protein synthesis.

Airtel Payments Bank is the first payment bank in India. A payments bank is a new category of banks conceptualized by the Reserve Bank of India, which operates at a smaller scale than an actual bank and doesn't involve any credit risk. It can carry out most banking operations but can't advance loans or issue credit cards.

The RBI as of date has given licences to 11 payments bank of which six are currently operational. These include

1. Aditya Birla Payments Bank,
2. Airtel Payments Bank,
3. India Post Payments Bank,
4. Fino Payments Bank,
5. Jio Payments Bank (and)
6. Paytm Payments Bank.

A typedef defines a new name for a type, and in simpler cases like the one shown below you can define a new structure type and a typedef for it at the same time.

typedef struct

{

    char name[20];

    int age;

} emp;

However, in the structure defined in this question, there is an error because a typedef declaration cannot be used until it is defined. In the given code fragment the typedef declaration is not yet defined at he point where the link field is declared.