There are six categories of security services: authenticiation, access control, data confidentiality, data integrity, nonrepudiation, and availability service. First, is authentication service, which defines as the assurance that the communicator is legitimate and is the one that it claims to be. It can either be peer entity or data origin authentication. Second, access control which is to prevent any unauthorized uses of resources. After one is being authenticiated, then this service limit/controls who access? what accessing rights to the resources are allowed depending on the identified individuals. Data confifentiality: the protection of data from unauthorized disclosure. Data integrity: the assurance that data received are exactly as sent by an authorized entity (e.t.c, contain no modificafion, insertion, deletion, or replay).
Answer:
Windows key,capslock key for verify connectivity
Explanation:
Sandy's can verify whether her keyboard is working or not by pressing the windows key. Caps Lock and Num lock key will turn on the light on keyboard and she shall see whether her keyboard is functioning or not. This method is being used everywhere to verify the keyboard connectivity.The light function can also be checked by using Caps Lock or Num lock key as well. Some keyboard offers the in built light, which can be turned on by pressing Alt+Space bar.
To avoid privacy these copyright is been implemented. If copyright is not implemented software company such as Microsoft, Google cannot run the organization so that software has copyright and licenses and they protect from software privacy.
<u>Explanation:</u>
Since the world is digital world all software are available in internet for download and end user will not pay for software and use the software without purchasing from software development industries.
Even software are protected with key, hacker write the tool to brakes the key, so end user easily use these tools and generate the key and user it.
So that software company use Digital millennium copyright act, so that end user can arrested for missing the software’s.
