MODULE IICOMPUTER APPLICATIONS II NOVEMBER 2023

KENYA NATIONAL EXAMINATIONS COUNCIL
DIPLOMA IN INFORMATION COMMUNICATION TECHNOLOGY
MODULE II
COMPUTER APPLICATIONS II
2 hours

INSTRUCTIONS TO CANDIDATES
The paper consists of SIX questions.
Answer FOUR of the SIX questions in the answer booklet provided.
Candidates should answer the questions in English.

This paper consists of 3 printed pages.
Candidates should check the question paper to ascertain that all the pages are printed as indicated and that no questions are missing.

Question 1: (a) Outline the function of each of the following commands as used in a Computer-Aided Design (CAD) program: (i) copy
Answer: The copy command duplicates selected objects or elements within the CAD design, placing the copies at specified locations.

(ii) move
Answer: The move command relocates selected objects or elements from one position to another within the CAD design without altering their orientation.

(iii) join
Answer: The join command connects two or more separate objects or elements, merging them into a single entity within the CAD design.

(b) A company was tasked to develop a Geographical Information System (GIS) to map out health centers within the country. Outline four attributes that the company should capture in the system.
Answer:

  1. Location coordinates (latitude and longitude) of each health center.
  2. Type of health services offered (e.g., general medicine, specialized care).
  3. Capacity of the health center (number of beds, staff).
  4. Contact information (phone numbers, email, etc.) of the health center.

(c) Outline four reasons that may necessitate a business to use computer systems for recording financial records.
Answer:

  1. Improved accuracy in data entry and calculations.
  2. Faster processing and retrieval of financial records.
  3. Enhanced security of financial data.
  4. Ease of generating financial reports and statements.

(d) Outline two characteristics of (i) a task that can be harder to replace with vehicle technologies, (ii) those assigned to cashiers.
Answer: (i) Characteristics of a task harder to replace with vehicle technologies: 1. High levels of human decision-making and judgment. 2. Tasks requiring complex problem-solving and adaptability. (ii) Characteristics of tasks assigned to cashiers: 1. Handling cash transactions and providing change. 2. Assisting customers with inquiries and purchases.

Question 2: (a) State six sources used to record financial transactions in accounting.
Answer:

  1. Invoices
  2. Receipts
  3. Bank statements
  4. Credit memos
  5. Debit memos
  6. Sales orders

(b) A duty management system used for customer vehicles in the city by self-help associations has recorded less than the type of vehicles a day. Identify the reason.
Answer: The reduction in recorded vehicle data may be due to a malfunction or incomplete data entry in the duty management system.

(c) Distinguish between advocate and application commands as used in a CAD program.
Answer:

  • Advocate commands typically involve supporting or supplementary actions within a CAD program, such as setting preferences or parameters.
  • Application commands are used to perform specific tasks, such as drawing, editing, or modifying design elements.

Question 3: (a) Identify the component labeled L.
Answer: L is Knowledge Acquisition System in the diagram.

(b) Explain the role of each of the following components in the system:
(i) Inferred rules
Answer: Inferred rules are derived from the knowledge base and are used to guide the decision-making process within the system.

(ii) User Interface
Answer: The user interface facilitates interaction between the user and the system, allowing users to input data and receive outputs.

Question 4: (a) Outline three types of CAD files that would be used in the public health industry.
Answer:

  1. Architectural drawings for healthcare facility design.
  2. 3D models for medical device prototypes.
  3. Floor plans for hospital layouts.

(b) Explain what the following terms used in artificial intelligence are: (i) Classification
Answer: Classification in AI refers to the process of categorizing data into predefined classes or groups based on specific attributes.

(ii) Clustering
Answer: Clustering involves grouping data points into clusters based on similarity, with no predefined labels.

Question 5: (a) Explain three ethical concerns that may arise as a result of innovations of robotics.
Answer:

  1. Job displacement due to automation and robotic systems replacing human workers.
  2. Privacy concerns related to the use of surveillance robots.
  3. Ethical implications of autonomous robots making decisions that could affect human lives.

(b) With the aid of an example, describe the use of each of the following commands in a CAD program:
(i) Trim
Answer: The Trim command in CAD is used to remove unwanted parts of an object or design by cutting them along specified boundaries.

(ii) Extend
Answer: The Extend command is used to lengthen an object in a design up to a specified boundary.

(iii) Fillet
Answer: The Fillet command is used to round off the corners of objects by creating a smooth arc between two intersecting lines or edges.

Question 6: (a) State the balance that is used to record each of the following transactions: (i) Withdrawal of cash from the bank by personal user.
Answer: This transaction is recorded under the Cash/Bank Account balance.

(ii) Purchase of stationery on credit general.
Answer: This transaction is recorded under the Accounts Payable balance.

(iii) Payment of an office utility charge.
Answer: This transaction is recorded under the Expenses Account balance.

(b) Distinguish between a modified node and a real-time node as used in a CAD program.
Answer:

  • A modified node refers to a point in a CAD design that has been altered or edited after its initial creation.
  • A real-time node refers to a dynamic point that updates immediately in response to changes within the CAD environment.

(c) With the aid of an illustration, explain the following terms as used in Artificial Intelligence: (i) Agent
Answer: An agent in AI is an entity that perceives its environment and takes actions to achieve a specific goal.

(ii) Autonomous
Answer: Autonomous refers to the capability of a system to operate independently without human intervention.

(iii) Prospect
Answer: A prospect in AI refers to a potential outcome or prediction based on analyzed data.

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