O-net การงาน ปี 2551-52

The question asks for the scenario where the use of information and communication systems provides the least return on investment. Option 2, which involves using the systems for growing vegetables in a school farm, is likely to have a lower financial return compared to the other options. This is because the purpose of using information and communication systems in this scenario is primarily for educational or practical purposes, rather than for generating direct financial profits.

The correct answer states that using a computer only when necessary and not leaving it on unnecessarily helps to reduce global warming. This is because computers consume energy, and the production of energy often leads to the emission of greenhouse gases, which contribute to global warming. Therefore, by using computers only when needed and turning them off when not in use, it reduces the overall energy consumption and helps to mitigate the impact of global warming.

not-available-via-ai

The correct answer is 3. ซอฟต์แวร์ประมวลคำ (word processing software). This type of software is specifically designed for creating, editing, and formatting text documents. It is commonly used in various industries for tasks such as writing reports, creating letters, and drafting documents. Word processing software provides features such as spell check, grammar check, formatting options, and the ability to insert images and tables into documents. It is an essential tool for anyone who needs to work with text-based documents.

แผ่นดิสเก็ต (diskette) ไม่สามารถเก็บแฟ้มภาพขนาด 144 เมกะไบต์ได้ เนื่องจากความจุของแผ่นดิสเก็ตมีเพียง 1.44 เมกะไบต์เท่านั้น

The correct answer is 2. CD-ROM drive. A CD-ROM drive uses optical technology to read data from a compact disc (CD). It uses a laser beam to scan the surface of the CD and convert the reflections into digital data. This optical technology allows for high-speed data transfer and storage, making it suitable for reading and accessing large amounts of data stored on CDs. The other options mentioned, such as a tape player, flash memory, and touch screen, do not specifically rely on optical technology for their functioning.

The term "E-Sourcing" refers to the process of finding and procuring goods and services through the internet. It involves using online platforms and networks to search for, evaluate, and select suppliers or vendors. This process allows businesses to streamline their procurement processes, save costs, and access a wider range of suppliers. E-Payment refers to electronic payment methods, E-Learning refers to online learning, and E-News refers to online news sources.

A spreadsheet software is the most suitable for recording and analyzing students' scores and displaying summarized data in the form of charts. Spreadsheet software allows users to input data in a tabular format, perform calculations and analysis on the data, and create visual representations such as charts and graphs. This makes it ideal for managing and analyzing scores and presenting them in a visually appealing and easily understandable manner.

A router is the best device for connecting three different networks because it can determine the most efficient path for data to travel between the networks. It can analyze the destination IP address of incoming data packets and forward them to the appropriate network. This allows for better network performance and security as it can filter and control the flow of data between the networks. A hub, bridge, or switch do not have the same level of intelligence and decision-making capabilities as a router, making them less suitable for connecting multiple networks.

A touch screen is a computer device that allows users to interact with the computer by touching the screen directly. It can receive input from the user by detecting the presence and location of touch. It also has the capability to display output by showing images, text, and other visual elements on the screen. Therefore, a touch screen can be classified as a unit that both receives input (as a touch input device) and sends output (by displaying information on the screen).

Creating an auction website does not necessarily require the use of a computer network. The website can be built and hosted on a single computer or a local server without the need for internet connectivity or a computer network. Therefore, option 1 does not require the use of a computer network.

The MAC Address is not an operating system. It is a unique identifier assigned to network interfaces for communications on a network. Microsoft Windows, Ubuntu, and Symbian are all examples of operating systems.

The correct answer is 3. Symbian, Mac OS, Linux, Windows. This answer includes a combination of different operating systems commonly used in various devices. Symbian is a mobile operating system, Mac OS is used in Apple computers, Linux is an open-source operating system used in various devices, and Windows is a widely used operating system for personal computers.

The correct answer is the network layer because it is responsible for routing and forwarding data packets across different networks. It determines the most appropriate path for data transmission and ensures that data is delivered to the correct destination. The network layer also handles addressing and logical connections between networks. Therefore, it is the layer where data control is performed and data is transmitted through suitable routes.

The action of buying a copyrighted CD and using it for editing and incorporating it into a project violates the rights of the copyright owner. This is because the copyright owner has the exclusive right to reproduce and distribute their work, and by editing and using the CD without permission, the person is infringing on those rights.

The correct answer is 4. "ผลคะแนน + สูงสุด + 2551". This answer is the most efficient keyword search because it includes all the necessary terms to find the report accurately. It includes the keywords "ผลคะแนน" (score), "สูงสุด" (maximum), and "2551" (the specific year). By combining these keywords, the search is more likely to yield the desired result.

The answer is 1 because in order for data to be considered good for processing in an information system, it needs to be accurate, up-to-date, and concise. Accuracy ensures that the data is correct and free from errors, while being up-to-date means that the data is current and reflects the most recent information. Conciseness refers to the data being presented in a clear and efficient manner, without unnecessary details or redundancies. These qualities are essential for effective data processing and utilization in an information system.

The correct answer is 3 because the ability to calculate income, expenses, and taxes in detail and accurately is not a direct benefit of e-commerce. While e-commerce can provide convenience, cost savings, and real-time customer data, the ability to perform detailed and accurate financial calculations is not necessarily a direct benefit of e-commerce itself.

When a computer is powered on, the first process that occurs is the execution of the instructions stored in the read-only memory (ROM) by the central processing unit (CPU). The ROM contains the firmware or the basic instructions needed for the computer to start up and initialize the hardware components. These instructions are read-only, meaning they cannot be modified or erased. Therefore, the CPU retrieves the instructions from the ROM and begins executing them, which sets the foundation for the computer's boot-up process.

The correct answer is 1. การวางสายระบบเครือข่ายสื่อสารใช้งบลงทุนสูง. This is because implementing a wired communication network requires a significant investment in infrastructure, such as cables, connectors, and installation costs. On the other hand, using a wireless communication network eliminates the need for extensive wiring, reducing the overall cost of implementation.

The correct answer is Open Office Writer because it is a document processing software that can be used to exchange documents on any operating system. Microsoft Office Word is a popular document processing software, but it is not available on all operating systems. Portable Document Format (PDF) is a file format that is widely used for exchanging documents, but it is not a document processing software. Graphics Interchange Format (GIF) is a file format for images, not documents. Therefore, Open Office Writer is the correct answer as it is a document processing software that can be used on any operating system.

To prolong the lifespan of a computer, the user should use an Uninterruptible Power Supply (UPS) to protect it from power surges and outages. Additionally, regularly checking the hardware's condition ensures any potential issues are detected and addressed promptly. By doing so, the user can prevent hardware failures and extend the computer's usability.

The correct answer is 1. 00100100. This binary number is equivalent to the decimal number 36. To convert 36 from decimal to binary, we divide 36 by 2 repeatedly and record the remainders in reverse order. The remainders are 0, 0, 1, 0, 0, 1, 0, 0. So, the binary representation of 36 is 00100100.

The correct answer is option 4 because it states that machine language is a language created to facilitate the convenience of writing instructions derived from English words. This implies that machine language is designed to make programming easier for humans by using familiar English terms. Options 1, 2, and 3 do not accurately describe machine language.

A Trojan horse is a type of malicious software that disguises itself as a legitimate program or file, tricking the user into downloading or installing it. Once installed, it can perform various harmful actions, such as opening unwanted windows and slowing down the computer's performance. Therefore, the presence of unwanted windows and decreased computer performance suggests that the occurrence is due to a Trojan horse.

The correct answer is 1. "ทุกเดือนได้รับเงินค่าใช้จ่าย 2,500 บาท". This statement directly states that every month, they receive 2,500 baht for expenses. This information is given in the passage and does not require any additional calculation or inference.