Networking Chapter 12

Which of the following frequency ranges does 802.11b use A. 2.4 GHz B. 4.1 GHz C. 2.4 MHz D. 5 GHz

A IEEE 802.11b and 802.11g operate in the 2.4 GHz range. 802.11a operates in the 5 GHz range, and 802.11n is compatible with all three standards. None of the standards uses 4.1 GHz or 2.4 MHz.

What is the maximum speed of an IEEE 802.11b network A. 2 Mbps B. 11 Mbps C. 54 Mbps D. 300 Mbps

B 802.11b networks can be as fast as 11 Mbps.

Your company is planning to lease a second building, which is about 2 miles away. You're asked how the networks between the two buildings can be connected. What would you suggest A. Add roaming WAPs. B. Connect the buildings with a P2P bridge. C. Extend the network by adding additional WAPs. D. Run a twisted pair between the buildings.

B A Point-to-Point (P2P) wireless bridge can connect wired networks in two buildings 25 miles apart.

Which of the following statements about the service set identifier (SSID) are true? (Choose all that apply.) A. aThe SSID is an alphanumeric value that identifies the vendor's device type. B. bThe SSID is an alphanumeric information field with a maximum value of 32 bits. C. The SSID is a logical network name for a wireless network. D. The SSID identifies the security encryption method.

B, C The SSID is a logical network name for a WLAN and has a maximum alphanumeric value of 32 bits. It doesn't identify the device type, and it doesn't identify the security encryption method.

What frequency does an 802.11n network use? (Choose all that apply.) A. 54 Mbps B. 300 Mbps C. 2.4 MHz D. 5 GHz

C, D 802.11n networks can use 2.4 GHz and 5 GHz. They have a speed of 300 Mbps.9

What frequency does an 802.11a network use A. 11 Mbps B. 54 Mbps C. 2.4 MHz D. 5 GHz

D 802.11a networks use 5 GHz. They have a speed of 11 Mbps

Of the following security methods, which one is the most secure A. WEP Personal Mode B. WEP Enterprise Mode C. WPA2 Personal Mode D. WPA2 Enterprise Mode

D WPA2 Enterprise Mode is the strongest. WPA2 Enterprise mode uses an 802.1x server, while WPA2 Personal mode only needs a preshared key.

True or false. A WAP and a wireless router are the same thing.

False A WAP is only an access point, but a wireless router includes an access point and additional components such as a router, a switch, and DHCP.

True or false. 802.11 networks use CSMA/CD

False Wireless networks (802.11 networks) use CSMA/CA. 802.3 networks use CSMA/CD.

True or false. IEEE 802.11n networks can operate at speeds as high as 300 Mbps.

True 802.11n networks use MIMO technology allowing them to operate at 300 Mbps and sometimes higher.