Answer:
Router
Explanation:
The others are not related to internet per se.
Answer:

Explanation:
The attached figure shows the cone.
Radius of cone, r = 5 ft
Height of the cone, h = 12 ft
We need to find the volume of the figure. The volume of a cone is given by :

So, the volume of the figure is
.
Answer:
Mobile app creation platforms are available that reduce the need to code.
Explanation:
Simple app creation softwares and tools are all over the place for mobile app creation. To create a mobile app, no coding knowledge or experience is needed unlike desktops apps that requires the knowledge of some coding languages like python, JavaScript etc.
The availability of these softwares and platforms have made mobile apps creation easy.
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.