GCSE Computer Science – Networks Exam Questions with Correct Answers

Local area network (LAN) - Answers-A type of network that covers a small area one a single site and are often found in homes, businesses and schools. It allows files to be easily shared, hardware to be shared, updates to be applied to all devices simultaneously. Wide Area Network (WAN) - Answers-A connection of LAN networks that are in different locations. It is more expensive than a LAN but it allows for a organisation to connect multiple places together. Bandwidth - Answers-The amount of data that can be transferred in a given time, e.g. 500 Mbps. It is shared between users on a network Factors of broadband speed - Answers-Bandwidth, number of users, wired/wireless connection, topology, fibre optic/copper cable Network interface controller (NIC) - Answers-Internal hardware that allows a device to connect to a network. It used to be a separate card but nowadays is built into the motherboard Switch - Answers-Hardware that connects devices on a LAN. They receive data through frames from one device and transmit it to other devices on the network with the correct MAC address Router - Answers-Transmits data between networks. It's directs packets on the internet and are used to connect a LAN to the internet Ethernet cable - Answers-Used to connect devices in a LAN. Most common are CAT 5e and CAT 6. It is a twisted pair cable, containing four pairs of copper wires twisted together to reduce interference. Coaxial cable - Answers-A single copper wire cable surrounded by plastic for insulation and a metallic mesh to shield it from interference Fibre optic - Answers-Cable that transmits data as light. It is very high performance and doesn't suffer from interference. It can transmit data over long distances without loss of signal. Radio waves - Answers-Used to transmit data wirelessly. WiFi - Answers-The standard for wireless networks. It uses 2.4 GHz and 5 GHz frequency bands.