SCTE 2 to 3|196 Review Questions
The lower three layers of the OSI model are____,____, and____. - ✔ ✔ Physical, data link, network
The manual site survey consist of which two possible methods? - ✔ ✔ Passive and active
The process in which a wireless LAN client connection moves from one access point to the other is
called? - ✔ ✔ Roaming
The range of a 2.4 GHz signal is mostly depending on which RF characteristic? - ✔ ✔ Wavelength
The RF signal strength seen by a wireless client device from an IEEE 802.11n access point can be
improved by: - ✔ ✔ Increasing the output power on the access point
The security amendment to the IEEE 802.11 standard requires___. - ✔ ✔ CCMP
The shorter the frequency the ____ the wavelength - ✔ ✔ Longer
The throughput of a wireless LAN can be affected by or: - ✔ ✔ Distance from access point, output
power of access point
The throughput of a wireless LAN client device can be increased by performing which task? - ✔ ✔
Adding access points
True or false: adjustable transmit power on access points can adapt the size of an RF coverage cell to the
subscriber's environment. - ✔ ✔ True
True or false: decreased throughput is usually related to how far a Wi-Fi client is from the AP. - ✔ ✔
True
True or false: most cable subscriber Wi-Fi access points use full wave dipole antennas. - ✔ ✔ False
True or false: most residential Wi-Fi installations will use omnidirectional antennas. - ✔ ✔ True
True or false: orthogonal frequency division multiplexing or OFDM channels in IEEE 802.11a use tightly
spaced subcarriers that must not interfere with one another, these RF channels are 22 MHz wide. - ✔
✔ False
True or false: the 5 GHz band produces better RF coverage at the premises than the 2.4 GHz band. - ✔
✔ False
True or false: the IEEE 802.11n specification added the support for MU-MIMO. - ✔ ✔ False
True or false: the Wi-Fi alliance is setting the hotspot 2.0 standards which allow for roaming between
Wi-Fi and cellular hotspots - ✔ ✔ True
, True or false: Wardriving is where an individual sets up a device to find wireless networks by
eavesdropping on wireless data exchanges. - ✔ ✔ True
True or False: Wifi extenders are used to amplify signals for a Wi-Fi coverage area. - ✔ ✔ True
True or false: WPA was built on a draft specification of IEEE 802.11s in order to replace WEP quickly. - ✔
✔ False
USB was designed as a replacement for which two legacy communication connections? - ✔ ✔ serial
and parallel
Warehouse inventory such as paint and other liquids in large quantity can cause which RF behavior? - ✔
✔ Absorption
Weak signal strength would have an impact on what device? - ✔ ✔ Client device
What are the correct authentication, cipher suite, and encryption mechanism for home use WPA-2
personal by default? - ✔ ✔ Preshared key, CCMP, a ES
How are the electromagnetic fields that are comprised of electric an magnetic field separated? - ✔ ✔
90 degrees
How are wavelength and frequency related to one another? - ✔ ✔ Wavelength and frequency are
opposite of each other - the higher the frequency the shorter the wavelength
How does SDV provide the solution to MSO band with constraints? (choose three) - ✔ ✔ Increases
the number of services per QAM
Un-viewed services are removed from the QAMs
Switches only those services viewed
How many bits are transmitted per symbol using 256 QAM at the physical layer of Wi-Fi? - ✔ ✔ 8
How many channels are available for wireless LANS to use the unlicensed UNII-1 band? - ✔ ✔ 4
How many cycles or oscillations in a wavelength? - ✔ ✔ 1
How many data bits does serial communication transmit at a time? - ✔ ✔ 1
How many ISM channels exist in the 2.4 GHz Wi-Fi spectrum? - ✔ ✔ 14
How many spatial streams are supported in the 2.4 GHz band in IEEE 802.11ax? - ✔ ✔ 4
How many U-NII bands are available to Wi-Fi (not including 802.11ax) - ✔ ✔ 4
The lower three layers of the OSI model are____,____, and____. - ✔ ✔ Physical, data link, network
The manual site survey consist of which two possible methods? - ✔ ✔ Passive and active
The process in which a wireless LAN client connection moves from one access point to the other is
called? - ✔ ✔ Roaming
The range of a 2.4 GHz signal is mostly depending on which RF characteristic? - ✔ ✔ Wavelength
The RF signal strength seen by a wireless client device from an IEEE 802.11n access point can be
improved by: - ✔ ✔ Increasing the output power on the access point
The security amendment to the IEEE 802.11 standard requires___. - ✔ ✔ CCMP
The shorter the frequency the ____ the wavelength - ✔ ✔ Longer
The throughput of a wireless LAN can be affected by or: - ✔ ✔ Distance from access point, output
power of access point
The throughput of a wireless LAN client device can be increased by performing which task? - ✔ ✔
Adding access points
True or false: adjustable transmit power on access points can adapt the size of an RF coverage cell to the
subscriber's environment. - ✔ ✔ True
True or false: decreased throughput is usually related to how far a Wi-Fi client is from the AP. - ✔ ✔
True
True or false: most cable subscriber Wi-Fi access points use full wave dipole antennas. - ✔ ✔ False
True or false: most residential Wi-Fi installations will use omnidirectional antennas. - ✔ ✔ True
True or false: orthogonal frequency division multiplexing or OFDM channels in IEEE 802.11a use tightly
spaced subcarriers that must not interfere with one another, these RF channels are 22 MHz wide. - ✔
✔ False
True or false: the 5 GHz band produces better RF coverage at the premises than the 2.4 GHz band. - ✔
✔ False
True or false: the IEEE 802.11n specification added the support for MU-MIMO. - ✔ ✔ False
True or false: the Wi-Fi alliance is setting the hotspot 2.0 standards which allow for roaming between
Wi-Fi and cellular hotspots - ✔ ✔ True
, True or false: Wardriving is where an individual sets up a device to find wireless networks by
eavesdropping on wireless data exchanges. - ✔ ✔ True
True or False: Wifi extenders are used to amplify signals for a Wi-Fi coverage area. - ✔ ✔ True
True or false: WPA was built on a draft specification of IEEE 802.11s in order to replace WEP quickly. - ✔
✔ False
USB was designed as a replacement for which two legacy communication connections? - ✔ ✔ serial
and parallel
Warehouse inventory such as paint and other liquids in large quantity can cause which RF behavior? - ✔
✔ Absorption
Weak signal strength would have an impact on what device? - ✔ ✔ Client device
What are the correct authentication, cipher suite, and encryption mechanism for home use WPA-2
personal by default? - ✔ ✔ Preshared key, CCMP, a ES
How are the electromagnetic fields that are comprised of electric an magnetic field separated? - ✔ ✔
90 degrees
How are wavelength and frequency related to one another? - ✔ ✔ Wavelength and frequency are
opposite of each other - the higher the frequency the shorter the wavelength
How does SDV provide the solution to MSO band with constraints? (choose three) - ✔ ✔ Increases
the number of services per QAM
Un-viewed services are removed from the QAMs
Switches only those services viewed
How many bits are transmitted per symbol using 256 QAM at the physical layer of Wi-Fi? - ✔ ✔ 8
How many channels are available for wireless LANS to use the unlicensed UNII-1 band? - ✔ ✔ 4
How many cycles or oscillations in a wavelength? - ✔ ✔ 1
How many data bits does serial communication transmit at a time? - ✔ ✔ 1
How many ISM channels exist in the 2.4 GHz Wi-Fi spectrum? - ✔ ✔ 14
How many spatial streams are supported in the 2.4 GHz band in IEEE 802.11ax? - ✔ ✔ 4
How many U-NII bands are available to Wi-Fi (not including 802.11ax) - ✔ ✔ 4
