For this exam, you should be able to adequately compare the specific networks and Internet connections listed below.
You should know the following Internet connection types:
Cable: uses coaxial lines paired with a modem to bring in Internet service
DSL: uses existing phone lines paired with a modem to bring in Internet service
Dial-up: old technology before DSL that sent data over phone lines, using 56k modems
Fiber: newer technology that utilizes fiber lines to bring service directly to you
Satellite: high-latency service; useful for remote, off-grid destinations
ISDN: Integrated Services Digital Network, typically used in business communication over T1 lines
Cellular Tethering: uses your phone’s cellular network to provide service to another device
Cellular Mobile Hotspot: allows wireless connections to your phone for the purpose of tethering
Line-of-sight Wireless Internet Service: use of central antennae to connect to a network
You should know the following network types:
LAN: local area connection in the same network; private network
WAN: networks that connect over the Internet; public network
PAN: networks in a small area for personal use, such as your car Bluetooth connections
MAN: network that is used for a small region or city area
For this exam, you should be comfortable comparing the following various network architecture devices:
Hub— older technology used before switches; connects multiple devices on a LAN, but only one device can communicate at a time; half-duplex operation
Switch: newer technology replacing hubs; allows full-duplex communication and smarter forwarding decisions
Router: used to communicate between different networks; decisions made off of Layer 3 information
Access Point: device that acts a bridge device, connecting wireless users to the wired network environment
Bridge: the act of connecting two different technologies across the same hardware or infrastructure [For example, you could bridge a virtual network connection to your physical computer network interface card (NIC).]
Modem: a device that converts analog signals to digital signals and vice versa
Firewall: devices (stand-alone or built-in) that filter out network traffic
Patch panel: equipment that manages the cabling connections; typically runs from a desk port to one side of the panel, then from a switch port to the opposite side of the panel; usually permanently punched down on one side
Repeaters/extenders: used to extend a signal being sent to provide additional coverage
Ethernet over Power: uses the existing power lines within a building or home to provide data communications
Power over Ethernet Injector: uses ethernet cabling to send power to devices; an injector can be used if the source or end device is not PoE-capable
For this exam, you should be able to evaluate a given set of network requirements, and select the best network tool for the job.
Crimper: This tool is used to connect twisted pair cable to an RJ-11 or RJ-45 connector.
Cable Stripper: This tool removes the outer layer of the wire jacket to expose the wires needing to be connected.
Multimeter: This tool is used to measure AC or DC voltage as well as resistance to test for continuity.
Tone Generator and Probe: These devices are used to locate cables in a wiring closet. The tone generator is typically placed at the user end, and a probe is waved around in the wiring closet to locate the connection. It will make a distinctive noise when it is near the correct cable.
Cable Tester: This device is used to certify that the cable meets the standards of the wiring code used and ensure it can be used for communication.
Loopback Plug: This tool is a special cable that is wired to transmit and receive to itself and is typically used for assistance in testing out network interface cards (NICs).
Punchdown Tool: This tool is used to make permanent wiring connections to their connectors.
WiFi analyzer: This device is used to show strong and weak spots in wireless coverage, and it can also be used in planning a wireless network for optimal placement of access points.