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).
BASIC
(Beginners' All-purpose Symbolic Instruction Code)
Answer and Explanation
There are five stages of group development which Alex should follow.
i) Stage 1: Forming-this is where he forms a team which will follow the other stages.
ii)Stage 2: Storming - In this stage is where the members set their goals and boundaries.
iii)Stage 3: Norming- This is where the team comes together in terms of ideas. In this stage members are ready to move forward with big expectations.
iv)Stage 4: Performing.-This is where now the team is now accomplishing or implements their ideas and they are now getting the benefits.In this stage members argue positively.
v)Stage 5: Adjourning-This is the stage where the group has accomplished their mission.And now the group is dissolved
Explanation:
Wikis are defined as a form of a website or web page or a database where the users can work on the data, they can even add or edit the data. Wikis use a very quick as well as a easy syntax that allows the users to format the text and create various links between the pages. The users need internet browsers for that.
One of the main advantage of wiki is that it provides ability to collaborate asynchronously, and also without time constraints.Besides it also provides a beneficial function of something. It is free and not expensive.
<span>The options attached to the question above are as follows:</span>
<span>
A. Light-Emitting diodes are used as
indicators in circuits
B. Light-Emitting diodes are used as defectors in circuits
C. Light-Emitting diodes have very short life-spans in circuits
D. Light-Emitting diodes conduct current in either direction in circuits</span>
ANSWER
The correct option is A.
Light emitting diodes [LED] refers to a semi conductor diode that glows when current flows through it by converting electrical energy into light. LED has many applications and one of it is that is used as an indicator in electric circuits. The circuit symbol of LED is made up of two arrow marks, which is used to indicate the radiation that is emitted by the diode.
