What will come in place of the question mark (?) in the

Which programming concept allows a variable name to refer to different entities based on its location in code?

How many essential KCL equations are written when performing node analysis for a circuit with n nodes?

Physical limitation of a signal is called?

Which key is kept secret and known only to the owner in a public key pair?

In a 2-to-1 multiplexer, how many select lines are required to choose between two data inputs?

What type of programming language is Python?

Which operation in relational algebra is used to create a new relation that includes all the rows from two given relations?

What does cardinality represent in the context of an ER model?

Which of the following is/are Network Audit Tools/Software

Which protocol is used for secure remote shell access and file transfers?