This computer science problem involves algorithmic thinking and programming concepts. The solution below explains the approach, logic, and implementation step by step.
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Here are the answers to the questions: Question 36: Step 1: Understand the function of a sensor in robotics. Sensors are input devices that gather information about the physical environment. Step 2: Evaluate the options. Storing files, printing documents, or detecting many devices are not primary functions of a sensor. Detecting changes in the environment (e.g., obstacles, light, temperature) is a core function. The correct option is b. b. detect changes in the environment Question 37: Step 1: Understand the role of motors in robotics. Motors convert electrical energy into mechanical motion. Step 2: Evaluate the options. Data storage, programming, and internet access are handled by other components. Movement is the direct result of motor operation. The correct option is a. a. movement Question 38: Step 1: Recall the functions of basic logic gates. • AND gate: Output is high only if all inputs are high. • OR gate: Output is high if at least one input is high. • NOT gate: Inverts a single input (0 becomes 1, 1 becomes 0). • NAND gate: Inverts the output of an AND gate. Step 2: Identify the gate that "reverses input signals." This is the definition of a NOT gate. The correct option is c. c. NOT gate Question 39: Step 1: Identify the software mentioned (Excel) and the action (using SUM to calculate totals). Step 2: Recognize that Excel is a spreadsheet program, and SUM is a built-in function, also known as a formula, used for calculations within spreadsheets. The correct option is b. b. spreadsheet formulas Question 40: Step 1: Understand the purpose of a pie chart. A pie chart is a graphical representation used to show proportions of a whole. Step 2: Relate this to the options. When data is presented graphically to make it easier to understand, it is called data visualization. The correct option is a. a. data visualization Question 41: Step 1: The problem is about data safety against physical disasters (flood/fire) affecting the office computer. The goal is an additional safer action beyond keeping a copy on the same office computer. Step 2: Evaluate the options for disaster recovery. • a. Printing chats is not a comprehensive data backup. • b. Storing a backup copy on an external hard drive creates a separate, portable copy of the data, which can then be stored off-site or in a secure location, protecting it from office-specific disasters. • c. Leaving the computer on does not protect data from physical damage. • d. Automatic save protects against minor data loss (e.g., power failure) but not against the destruction of the entire computer. The correct option is b. b. Store backup copy on an external hard drive Question 42: Step 1: The description "clear, step by step, and have a definite start and end" for a set of instructions to achieve a task. Step 2: This description perfectly matches the definition of an algorithm, which is a finite sequence of well-defined, computer-implementable instructions, typically to solve a class of problems or to perform a computation. The correct option is d. d. computer algorithm Question 43: Step 1: Understand "ascending order." This means arranging numbers from the smallest to the largest. Step 2: Examine each sequence. • a. 1,2,3,4,5 is sorted from smallest to largest. • b. 5,4,3,2,1 is descending order. • c. 2,1,4,3,5 is not sorted. • d. 3,2,1,5,4 is not sorted. The correct option is a. a. 1,2,3,4,5 Question 44: Step 1: Recall the format of a valid IPv4 address. It consists of four numbers (octets), each ranging from 0 to 255, separated by dots. Step 2: Evaluate the given options: • a. google.com is a domain name. • b. 192.168.10 resembles the beginning of an IP address, but is incomplete (missing the fourth octet). However, it is the only option that follows the numerical, dot-separated structure of an IP address. • c. https://www.school.edu is a URL. • d. c: is a file path. Step 3: Although 192.168.10 is technically incomplete as a full host IP address, it is the only option that represents a part of an IP address format, making it the most plausible answer among the choices. The correct option is b. b. 192.168.10 Question 45: Step 1: The core requirement is to allow different users (students, teachers, parents) to access different information and have different capabilities (teachers post grades, students view grades). Step 2: This functionality is managed by a system that stores information and controls who can do what with that information. • a. More images are irrelevant to access control. • b. Printers are irrelevant. • c. Faster internet and firewall are for general performance and security, not specific user permissions. • d. A database stores the information, and user permissions and access levels are precisely how different roles are assigned different capabilities (e.g., read-only for students, read/write for teachers). The correct option is d. d. database with different user permission and access level Question 46: Step 1: The goal is to "visually compare the sales figure of four different products." This means comparing discrete numerical values for different categories. Step 2: Evaluate chart types: • a. A pie chart shows parts of a whole, not ideal for direct comparison of magnitudes between distinct items. • b. A Venn diagram shows relationships between sets. • c. A bar chart is excellent for comparing discrete categories side-by-side, making it easy to see differences in magnitude. • d. An organizational chart shows hierarchy. The correct option is c. c. A bar chart What's next? Send 'em!