External hard drives typically connect to a computer via an external port (such as a USB or <u>thunderbolt</u> port) or a wireless connection.
<h3>What is a hard drive?</h3>
A hard drive can be defined as an electro-mechanical, non-volatile data storage device that is made up of magnetic disks (platters) that rotates at high speed.
In Computer technology, all hard drives are commonly installed on computers and other digital service for the storage of digital files and to enable the booting of a computer through its operating system (OS).
<h3>What is a memory?</h3>
A memory can be defined as a terminology that is used to describe the available space on an electronic device that is typically used for the storage of data or any computer related information such as:
In conclusion, all external hard drives typically connect to a computer through an external port such as a USB, <u>thunderbolt</u> port, or a wireless connection.
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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:
Given address = 94EA6
tag = 0 * 94 ( 10010100 )
line = 0 * 1 D 4 ( 111010100 )
word position = 0*6 ( 110 )
Explanation:
using the direct mapping method
Number of lines = 512
block size = 8 words
word offset = 
= 3 bit
index bit = 
= 9 bit
Tag = 20 - ( index bit + word offset ) = 20 - ( 3+9) = 8 bit
Given address = 94EA6
tag = 0 * 94 ( 10010100 )
line = 0 * 1 D 4 ( 111010100 )
word position = 0*6 ( 110 )
