QUESTION 1: Describe two characteristics of data in the context of information technology.
- No Meaning: Data lacks inherent meaning and needs to be interpreted in a specific context to derive meaningful information from it.
- No Structure: Data is unstructured and does not follow a particular format or order. It is simply a collection of raw information without any organization or coherence.
Question 2: Define ad hoc networks, such as open Wi-Fi and personal hotspot, and explain how they are used.
- Ad hoc networks are temporary networks created for specific purposes.
- Open Wi-Fi allows devices to connect wirelessly without a password.
- Personal hotspot enables sharing a mobile device’s internet connection with other devices.
Question3: Describe two factors that affect the quality of information.
- Source/Collection Method: The origin of the information and how it was collected determine its reliability and credibility. Information from reputable sources and collected using appropriate methods is more likely to be of high quality. 2. Accuracy: The correctness and freedom from errors in the information contribute to its quality. Accurate information is essential for making informed decisions
Question4: Describe three key characteristics of information.
- Information has meaning: Unlike raw data, information carries understanding, knowledge, or interpreted facts to its receiver. It is meaningful and conveys a clear message.
- Information has structure: It follows a particular structure or format, making it organized and understandable. This structure allows the information to convey a complete and comprehensible idea.
- Information has context: It is data placed in context, allowing us to understand its significance and its relationship with other data. Context provides a framework for interpreting and comprehending the information.
Question5: Describe the advantages and disadvantages of representing information in text form.
- Advantages of representing information in text form: - Text allows for detailed information to be conveyed. - Text is excellent for expressing nuanced ideas or telling a story. - Text is widely used in various mediums such as books, websites, and social media.
- Disadvantages of representing information in text form: - Complex data or trends can be hard to understand when presented as text only. - Text may not engage the audience as effectively as other methods of representation. - Text may require additional effort from the reader to interpret and understand.
Question6: Describe three validation methods used to ensure the suitability of data for processing.
- Range Check: This method ensures that a value falls within a specified range. For example, it can be used to check if a user’s age is within a valid range.
- Type Check: This method verifies if the data entered is of the correct type. It ensures that only valid data is accepted. For example, it can be used to check if a user’s input for a phone number field consists of numbers only.
- Lookup Check: This validation method compares the entered data to a set of predefined values. It ensures that the entered data matches one of the valid options. For example, it can be used to validate a user’s selection from a dropdown list of countries.
Question7: Describe three potential threats posed by the collection and use of personal data in the digital age.
- Invasion of Privacy: Personal data can reveal intimate details about a person’s life, such as their habits, preferences, beliefs, and relationships. If this data falls into the wrong hands or is used without consent, it could lead to a serious invasion of privacy.
- Fraud: Data breaches can expose sensitive information such as credit card numbers, Social Security numbers, or login credentials, which can then be used for fraudulent activities.
- Targeting Vulnerable Groups of People: Certain data, particularly when misused or mishandled, can be used to target vulnerable groups. For example, data about individuals’ online behavior could be used to manipulate their emotions or opinions.
Question8: Describe the advantages and disadvantages of primary data collection methods
Advantages of primary data collection methods:
1. Specificity: Primary data collection allows for gathering information that is tailored to your exact needs and research objectives.
2. Freshness: Since primary data is collected directly from the source, it is up-to-date and reflects the current situation or context.
3. Control: You have direct control over what is measured, how it is measured, and who is being asked, which leads to high relevancy and accuracy of the data.
Disadvantages of primary data collection methods:
1. Time-consuming: Primary data collection can be a time-consuming process that may require significant resources, such as conducting surveys or interviews.
2. Large sample sizes: Ensuring unbiased and representative results often necessitates large sample sizes, which can be difficult and costly to achieve.
3. Potential bias: The presence of the researcher or interviewer during primary data collection can introduce bias and influence the responses of participants.
