1.3.3 Networks
Networks — Note 4 of 5
Candidates need to have knowledge of the hardware required to connect to and/or build a network (e.g. modem, router, cable, NIC, Wireless Access Points, hub, switch etc). Candidates need to understand the purpose of the hardware, but are not required to understand how they physically work.
Networks need hardware to connect devices and to move data between them and other networks. You need to know the purpose of each piece of hardware, but not how it physically works.
Exam tipCommon mistake
Allows a device to connect to a network; each NIC has a unique MAC address.
Connects devices on the same LAN and uses MAC addresses to send data only to the intended device.
Connects devices on a LAN but sends data to every device, so it is less efficient and less secure than a switch.
Connects different networks together (e.g. a LAN to the Internet) and uses IP addresses to forward packets towards their destination.
Allows wireless devices to connect to a wired network.
Converts digital data into a signal that can be carried over a telephone or cable line, and back again.