Exam Of Use Of Computer Subject

The correct answer is "ถูกทุกข้อ" (all of the above). This means that all of the options listed (Lan, Man, and Wan) are types of network systems. A LAN (Local Area Network) is a network that connects devices within a limited area such as a home or office. A MAN (Metropolitan Area Network) is a network that spans across a city or metropolitan area. A WAN (Wide Area Network) is a network that covers a large geographical area, often connecting multiple LANs and MANs together. Therefore, the correct answer is that all of these options are types of network systems.

Bluetooth ใช้เทคโนโลยีเครือข่ายที่ไม่ใช้สาย (Wireless LAN) เพื่อเชื่อมต่อและส่งข้อมูลระหว่างอุปกรณ์ต่าง ๆ โดยใช้คลื่นวิทยุในการสื่อสาร ซึ่งทำให้สามารถเชื่อมต่ออุปกรณ์ต่าง ๆ เช่น โทรศัพท์มือถือ, หูฟัง, ลำโพง, คีย์บอร์ด และเม้าส์ได้อย่างสะดวกและรวดเร็ว โดยไม่ต้องใช้สายเชื่อมต่อเพิ่มเติม ซึ่งเป็นเทคโนโลยีที่ได้รับความนิยมในการใช้งานในช่วงหลายปีที่ผ่านมา

A CD-ROM cannot be used in a network system because it is a read-only storage medium that can only be accessed by a single computer at a time. Unlike other devices like a hard disk, printer, or scanner, a CD-ROM cannot be shared or accessed simultaneously by multiple computers in a network. Therefore, it cannot be used in a network system where multiple users need to access and share data simultaneously.

A server is a computer or system that provides data or services to other computers or devices on a network. In this context, the question is asking for the term used to refer to the machine that distributes data to the requesting machine. The correct answer is "Server" because it accurately describes the role and function of the machine in question.

Firewall is not a device used for connecting signals in a network. It is a network security device that monitors and filters incoming and outgoing network traffic based on predetermined security rules. Routers, switches, and gateways, on the other hand, are all devices used for connecting and directing network traffic.

ผู้ใช้ในเครือข่ายสามารถเข้าถึงข้อมูลใดใดได้โดยไม่มีขีดจำกัด เป็นประโยชน์ของระบบเครือข่าย เนื่องจากสามารถเข้าถึงข้อมูลที่ต้องการได้ทันทีและไม่มีขีดจำกัดในการเข้าถึง ทำให้ผู้ใช้สามารถทำงานได้อย่างรวดเร็วและมีประสิทธิภาพมากขึ้น

The correct answer is "แบบไร้สาย (Wireless Network)". This is because the question is asking about the current popular network system, and wireless networks have become increasingly popular in recent years. With the advancement of technology, wireless networks provide flexibility and convenience by allowing devices to connect without the need for physical cables. This has made wireless networks the preferred choice for many users and businesses.

The correct answer is HUB, LAN CARD, CABLE NETWORK, NETWORK OPERATING SYSTEM. A wireless network refers to a network that allows devices to connect and communicate without the use of physical cables or wires. In order to set up a wireless network, certain components are required. A hub is a device that connects multiple devices together in a network. A LAN card, also known as a network interface card, is required to connect a device to the network. A cable network refers to the infrastructure that allows the transmission of data through cables. Finally, a network operating system is the software that manages and controls the network. Therefore, the combination of a hub, LAN card, cable network, and network operating system is necessary for a wireless network.

The correct answer is "สนับสนุนการทำงานเป็นทีม" (Support teamwork). This is because computer networks enable multiple users to share resources and collaborate on tasks, which promotes teamwork and enhances productivity.

The correct answer is WAN. A Wide Area Network (WAN) is a network that covers a large geographical area, such as multiple cities or countries. It connects multiple local area networks (LANs) and allows for communication and data transfer between different locations. The internet is an example of a WAN as it connects computers and networks across the globe.