What value should come in the place of (?) in the

Which type of malware locks users out of their systems and demands payment to restore access?

The clause that combines object files into one executable file is executed by a:

Which of the following refers to a program used for manipulating data in rows and columns?

Which database model represents parent-child relationships in a tree-like structure?

Which of the following is NOT a feature of cloud computing?

Which of the following device types is necessary to connect a wired LAN?

Which of the following is an example of non-volatile primary memory?

What type of scheduling is round-robin scheduling?

Multi-programming started in which generation of computers?  

Which memory is fastest among the following?