Answer:
A. Define boundaries
C. Deny access
D. Delay access
Explanation:
A barrier is a material or structure used to prevent or block access. Barriers can either be natural or structural and are used for many purposes usually for security reasons. The following are functions of barriers either natural or structural:
- Define areas of boundaries
- Delay or slow access. Example is the use of speed bumps to slow down vehicles.
- Provide access to entrances such as the use of gates
- Deny access to unauthorized personnel and allowing authorized personnel.
<span>New sources of power assist in the development of inventions since t</span>he new inventions would have been worthless without a reliable source of power energy.
<span>The customer's endpoint device on the WAN is called the Data Terminal Equipment (DTA).
WAN is wide area network, referring to a network that extends over a large area. DTA is an end instrument which converts information into signals.</span>
The answer is C to this question
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