Fundamental Knowledge Of Computer Network Quiz

LAN stands for Local Area Network. It is a computer network that connects devices within a limited geographical area, such as a home, office, or building. LANs allow for the sharing of resources, such as printers and files, and enable communication between connected devices. The other options, Low Area Network and Local Arial Net, are incorrect and do not represent the correct definition of LAN.

A computer network refers to a system where multiple computers are interconnected and can communicate with each other. This allows for the sharing of resources, such as files and printers, and enables communication between users. Therefore, the answer "A number of connected computers" accurately describes the concept of a computer network, as it highlights the key aspect of connectivity among the computers.

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A WAN stands for Wide Area Network. This type of network covers a large geographic area, typically connecting multiple local area networks (LANs) across different locations. It allows for communication and data sharing between computers and devices that are located far apart from each other. The other options, World Area Network and Wide Antenna Network, are not recognized acronyms and do not accurately describe the concept of a WAN.

A standalone computer operates independently and is not connected to a network, meaning it does not share resources or communicate with other computers. This is in contrast to networked computers, which are connected and can share files, printers, and internet access. A portable computer refers to laptops or mobile devices, and a computer without a CPU cannot function as the CPU is essential for processing instructions.

PAN stands for Personal Area Network. It is a network used for connecting devices in close proximity to an individual, typically within a range of 10 meters. This network is created for personal use and allows for the communication and sharing of data between devices such as smartphones, tablets, and laptops. PANs are commonly used for Bluetooth and Wi-Fi connections, enabling the transfer of files, internet access, and peripheral device control.

Bus network topology requires terminators because it is a linear network where all devices are connected to a single cable. The terminators are used to prevent signal reflections and ensure that the signal travels in one direction only. Without terminators, the signals would bounce back and forth, causing interference and data corruption. Therefore, terminators are essential in bus networks to maintain signal integrity and ensure proper communication between devices.

The Star Network is considered the fastest network topology because it provides a dedicated link between each device and the central hub. This means that data can be transmitted directly from the source device to the destination device without any interference or congestion. In contrast, in a Bus Network or Ring Network, data needs to pass through multiple devices before reaching the destination, which can lead to slower transmission speeds.

The disadvantages of WAN include the spread of viruses, as the wide area network connects multiple devices and locations, making it easier for viruses to spread across the network. Setting up a WAN can be expensive due to the need for specialized equipment, infrastructure, and maintenance costs. Additionally, WANs require data security measures to avoid hacking, as the network is vulnerable to unauthorized access and data breaches.

A LAN (Local Area Network) offers several advantages, including the ability to share peripherals such as printers and scanners among multiple users. This reduces the cost of purchasing individual devices for each user. Additionally, LANs allow for the sharing of software and files, enabling collaboration and easy access to resources. Another advantage is that LANs are easily expandable, meaning that more devices and users can be added to the network without significant difficulty or expense.