CWNA-106 무료 덤프문제 온라인 액세스

What statements accurately describe the RF cables and connectors that are used in an
802.11 WLAN system? (Choose 3)

• A.Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
• B.Large diameter RF cables cause greater loss than smalldiameter cables.
• C.Every RF connector causes insertion loss.
• D.75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
• E.RF cables have upper and lower frequency range specifications.

The IEEE 802.11-2012 standard requires VHT capabledevices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)? (Choose 2)

• A.HT
• B.HR/DSSS
• C.OFDM
• D.ERP-PBCC
• E.DSSS-OFDM

What statement accurately describes the RF cables and connectors that are used in an
802.11WLAN system?

• A.Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
• B.75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
• C.Some RF connectorsdo not cause insertion loss.
• D.Large diameter RF cables cause greater loss than small diameter cables.

In a single channel architecture (SCA) WLAN system, 802.11n (HT) APs should not share an SSID with 802.11g (ERP) APs.
What is the reason for this recommendation?

• A.Client stations would see two different sets of AP capabilities as they roam between APs with the same BSSID.
• B.The additional beacon material in 802.11n beacons wouldconfuse 802.11b/g client stations.
• C.Beacons from 802.11n APs use 40 MHz channels, while beacons from 802.11g APs use
  20 MHz channels.
• D.The added range of 802.11n APs would cause additional co-channel interference.

As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area.What term describes the rate at which this expansion happens?

• A.Ohm's law
• B.MU-MIMO
• C.Inverse square law
• D.Fresnel zone thinning