Answer:
D. System/Application Domain
Explanation:
A system or application domain is used by an organization to supports its IT infrastructure, holding all the business critical mission system, applications and data. All the resources of the company are contained in this domain, and is accessible by a member.
LAN to WAN domain links the company's infrastructure or local area network to a wide area network or the internet. The WAN domain simply holds publicly the data of an organisation, while remote access domain is meant for a small group of workers in the office or working from home.
 
        
             
        
        
        
Answer:
The answer is design.
Explanation:
I know this because based off the notes it states that "the designer can use a model or mock-up to illustrate the look and feel, to help gain a better understanding of the necessary elements and structures.
 
        
             
        
        
        
Answer:
All of the above. 
Explanation:
An operating system is a system software pre-installed on a computing device to manage or control software application, computer hardware and user processes. 
This ultimately implies that, an operating system acts as an interface or intermediary between the computer end user and the hardware portion of the computer system (computer hardware) in the processing and execution of instructions. 
Some examples of an operating system on computers are QNX, Linux, OpenVMS, MacOS, Microsoft windows, IBM, Solaris, VM etc.
Hence, the operating system (OS) provides utility software designed to perform specific tasks. Some of the tasks it performs are;
A. Establishing an Internet connection. 
B. Coordinating tasks between programs. 
C. Configuring peripheral devices. 
D. Monitoring security.