D, is the correct choice here.
A smart phone should always be a client due to the fact that it gathers information from a server.
Answer:
Examples of Fact-finding techniques includes:
-
Prototyping
-
Questionnaires
- Research and sites visit
-
Interviews
Explanation:
It is important to note that a database system is a tool that allows users to define, create, maintain, and control access to a collection of logically related data and description of these data, designed to meet the information needs of an organization.
<u>Prototyping
</u>
<em>Advantage:</em> enables testing and understanding of the system in advance before final implementation of solution, while requiring less time for research.
<em>Disadvantage:</em> Training and Development cost consumes resources.
<u>Research and site visit </u>
<em>Advantage :</em> better time management if the problem has been researched upon before.
<em>Disadvantage:</em> appropriate permission is often needed before using research materials.
<u> Questionnaires
</u>
<em>Advantage: </em>This technique is not expensive, and responses can be calculated and analysed quickly.
<em>Disadvantage:</em> There may be Incomplete answers received from users and body language of user cannot be observed.
<u>Interviews</u>
<em>Advantage:</em> The body language of interviewees is been perceived.
<em>
Disadvantage: </em>Interviewing is time consuming and costly.
Answer:
C
Explanation:
Joe should backup all his data from his old mobile device to his PC and then import all the data to his new device via PC. This is the fastest way for transferring data than all the other options mentioned. Most of the time the devices with different OS cannot connect via Bluetooth so option B is not suitable here. If we talk about logging in to same email provider on the new device, it might work but it'll take a lot of time to transfer data to a new device since the data is been copied through internet. If Joe has a strong internet connection than it might be a suitable option for him but what if the connections breaks down in middle of transfer? Similarly NFC also uses internet connection, but that's not only the problem with NFC, like Bluetooth, NFC also works with similar OS devices. Apart from that NFC only transfers small payloads of data.
