Lesson 12: Exploring Wireless Networks Flashcards
What is a Wireless Router?
Wireless router is a WAP with extra capabilities. Common to find wireless routers in home networks or SOHO network. It bridges wireless clients to wired networks just as WAP does but does much more.
What are some examples of wireless devices?
Wireless phones, tablets , gaming systems, includes wireless capabilities.
What is the difference between infrastructure mode and Ad hoc?
Infrastructure mode requires a central access point that all devices connect to. Ad-hoc mode is also known as “peer-to-peer” mode. Ad-hoc networks don’t require a centralized access point. Instead, devices on the wireless network connect directly to each other.
What are Radio Power Levels?
Radio power levels turn up the radio power of the WAP, you can increase the distance of the transmission within your home network, and alternatively, if you don’t want people outside the home or office to receive the signal, you can turn down the radio power level.
What is a personal mode?
Personal mode uses a preshared key or passphrase. Every wireless device must have the same passphrase as the wireless router.
What is a enterprise mode?
Larger organizations sometimes use Enterprise mode. Enterprise Mode uses a RADIUS server to authenticate clients. Users need a user name and password to access the wireless network
What is Mac Filtering? (Media access control filtering)
A security feature. Each network interface card (NIC) has a unique MAC address assigned to it, and you can restrict access to a wireless network based on this address.
What is a WPS?
Wifi Protected Setup. Push button or pin.
What is a SSID broadcast?
When service set identifier (SSID) broadcast is enabled, the wireless router periodically sends out special packets to announce its presence. These broadcasts allow other wireless devices to easily see it and connect to it.
Should you enable or disable a SSID broadcast?
As a general rule, it’s recommended that SSID broadcast be enabled. Wireless protocols are designed to work with WAPs and wireless routers advertising their presence with SSID broadcast enabled. However, this feature can be disabled as well which prevents broadcasting of the SSID.
What should you do when there is no connectivity when initially setting up device.
Check the basics, such as the SSID, security type, and passphrase, and check to see if wireless is enabled on the device.
What should you do when there no connectivity for a device that was connected.
If a wireless device previously worked but is not working now, a device reset usually does the trick.
What should you do when there is Intermittent connectivity?
Modify the antenna and access point placement and/or adjust RF power levels.
What should you do when there are slow transfer speeds?
Remove any interfering devices, and check antenna and RF power levels.
What should you do if there is a low RF signal?
Turn the power level back up on the WAP, and If that doesn’t resolve the problem, reposition the WAP and antenna.
