Week 3 Axia It

IT/241

Wireless router

* A wireless router interfaces an internet connection and wireless devices. It has its own DNS registry, and converts entered URLs to IP for the user to navigate. It also may transfer data between wireless devices, such as PC to printer or PC to PC. Usually to access the internet, a wireless router also needs an internet modem, but many of today’s wireless routers have a modem built in. A wireless router is essential for a WLAN system, as it is the one device to which all wireless devices connect. Pricewatch.com lists the average cost of a wireless-N router at $12.99.

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Computer

* A computer is the human interface device to internet and processing. A computer provides arithmetic and logical functions to perform software program execution and data processing. Newer computers have the accessorized hardware to access the internet directly, but the hardware will normally include a wireless modem and interface card. Computers, depending on speed, added software and accessories can range from $300 to over $2,000, per pricewatch.com.

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Firewall

* A firewall is a program, or series of programs designed to monitor Ethernet traffic to prevent unauthorized outside access to a closed user network. A simple version merely checks for previously authorized domain names and IP addresses. A security policy should be in place when using a firewall. A firewall is not required for WLAN systems, but it is considered risky to operate without one in place and no firewall may leave a user’s system vulnerable to infiltration and data corruption, even identity theft. Simple software packages can cost $15, and software/hardware bundles can total more than $1,000, according to pricewatch.com.

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Wireless access point

* A wireless access point is a broader definition of a wireless router, but not all access points are limited to routers only. An access point may also designate a router/modem combination. Some kind of...