Answer:
A perimeter intrusion detection system (PIDS) is a device or sensor that detects the presence of an intruder attempting to breach the physical perimeter of a property, building, or other secured area.
the use of buried sensor for perimeter intrusion detection system, becomes very popular due to the advantage of been a discreet or even an invisible detection system and avoiding the need to build an above-the-ground fence to protect the perimeter due to costs or environmental reasons
Explanation:
<em>Description of 3 systems:</em>
Barrier-Mounted :Fence Intrusion Detection System
PIDS deployed on or in conjunction with a fence or other physical barrier (e.g. DAS cable or other motion sensors mounted on a fence).
Ground-based or Below-ground
:
PIDS deployed below ground (again a DAS cable can be used or pressure sensitive cable or electromagnetic field). These do not require a physical barrier.
Free-Standing
PIDS deployed above ground that do not need to be installed on or in conjunction with a physical barrier (e.g. bistatic microwave link).
Example of one PIDS system I have seen deployed in a familiar location is the ones at the prison which is a barrier mounted or some inairports that prevent small to cause harm to small animals.
Answer:
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Answer:
You could think about this in several ways with several approaches.
- Survey
- User testing in groups
- On the actual registration program, 3 questions pop up
With general open ended questions and by talking to users
Explanation:
- Demographics
- Ask them what they like about the registration program
- What they use the registration for
- What they would do to improve it
Answer:
1. Semantic
2. modifies
Explanation:
Semantic HTML is understood by the traditional browser, and semantic tags are the one that ensures not just presentation, but also adds the meaning to the webpage. And hence, img here is both semantic as well as presentational. Hence, the first option is semantic. And the IMG modifies the meaning of the web page. The description is done by the text. And hence the second option is modified.
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answer:
Mainframe computers are used by large companies and organisations to perform critical tasks that involve bulk data processing like transaction processing, census information, statistical data and so on. They consist of extensive input and output facilities, are very stable and dependable and handle millions of transactions every day
Explanation:
