Describe the UNIX architecture and explain the functions of the main components of the UNIX architecture     

 

b) Your friend attempted to print a document from a newly acquired printer but when he connected the printer to his PC a message popped up saying "Device drivers not installed". Explain to this friend what the device drivers are and why they are important and need to be installed       

 

c) Describe the two main device classes in the UNIX system and how they operate, giving two examples each.