_____ is the modification of software to remove or disable features which are undesirable by a person. 

In the e-mail address admin@vms.org, “vms" is the :

A device that combines data from multiple computers and load them on a common  communication channel is : 

The Walkie Talkie is an example of which mode of communication? 

A collection of four bits is called : 

Which hardware device is used to interconnect different types of networks with different protocols?