2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
Cable Modem A modem stands for modulator/demodulator because it converts between analog and digital signals. Cable modems allow you to connect to a broadband network, usually provided by a cable…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
A hub is a repeater. Anything sent on one port automatically goes out to all other connected ports. The difference between a hub and a repeater is that a repeater,…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
A repeater is used to extend a network connection over long distances. A repeater receives a signal, regenerates it, and then resends the signal out another interface. It does not…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
Any device that is going to connect to a network, needs a network interface card (NIC). Servers, printers, routers, switches, tablets, phones, etc. could all have network interface cards. A…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
Firewalls are used to control the flow of traffic to a network. Firewalls can filter traffic by port number. This is often called OSI Layer 4 filtering. Modern firewalls can…
Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
There may be many wireless access points within a building or company so to manage the many access points, you could use a wireless LAN controller. The wireless LAN controller…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
A wireless access point (WAP) provides access to wireless networks. A wireless access point is not a wireless router, though the two may appear to be similar. A wireless router…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
A switch is where various network devices join to. A switch is a smart repeater that can have a large number of port interfaces. A consumer level switch has 4…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
A router routes traffic between IP subnets. Routers route traffic based on destination IP addresses. A router is usually a stand alone device, but if the routing capability is included…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
When moving data packets from one system to another over a network, the TCP/IP protocol needs to know if the communication will be connection oriented or connection less. A connection…