PROGRESSION: FIELD TECH II - III
CONVENTIONAL
What does the Institute of Electrical and Electronics Engineers (IEEE) specify as
the maximum allowable power output into the intentional radiator for IEEE
802.11a-, 802.11n-, and 802.11ac-compliant devices operating on the lower
Unlicensed National Information Infrastructure (U-NII) radio band? - ANSWERS-40
milliwatts (mW).
How wide is each of the three wireless local area network (WLAN) Unlicensed
National Information Infrastructure (U-NII) bands? - ANSWERS-100 megahertz
(MHz).
When connecting to a wireless local area network (WLAN), what is the most
important point about the service set identifier (SSID)? - ANSWERS-That the
clients and all access points (AP) must be configured with matching SSIDs.
How does a client locate a wireless local area network (WLAN) when performing
passive scanning? - ANSWERS-The client listens for beacons until it hears a beacon
listing the service set identifier (SSID) of the network it expects to join.
,Why would a wireless local area network (WLAN) administrator rarely see the
"authenticated" step on the access point (AP)? - ANSWERS-Because clients pass
the authentication stage and immediately proceed into the association stage.
Why is shared key authentication considered a security risk in a wireless local area
network (WLAN)? - ANSWERS-The access point (AP) transmits the challenge text
in the clear and receives the same challenge text encrypted with the wired
equivalent privacy (WEP) key.
An independent basic service set (IBSS) is also commonly referred to as which one
of the following? - ANSWERS-Ad hoc network.
What is a wireless local area network (WLAN) service set? - ANSWERS-It describes
the basic components of a fully operational WLAN.
Which term describes the operation mode of a basic service set (BSS)? -
ANSWERS-Infrastructure mode.
In a segmented wireless local area network (WLAN) that has a different Internet
protocol (IP) address for each segment, which solution allows mobile clients to
maintain their connectivity when roaming into different segments? - ANSWERS-To
deploy all access points (AP) on a single virtual local area network (VLAN) using a
flat IP subnet for all APs so that no change of IP address for roaming clients occurs
and all traffic goes through a central controller.
,Which one of the following power management modes populates a traffic
indication map (TIM) in a basic service set (BSS) or extended service set (ESS)? -
ANSWERS-Power save polling (PSP) mode.
As a subscriber enters a hotspot area, what signals their mobile wireless device of
an available Wi-Fi network? - ANSWERS-The access point (AP) advertises to the
wireless device to enable connection.
Which is the largest IEEE 802.11 data frame that can traverse a wireless local area
network (WLAN) without fragmentation? - ANSWERS-2,346 bytes.
What is the tradeoff between the fragmenting of packets into shorter fragments
versus keeping longer packet fragments? - ANSWERS-Shorter packet fragments
have lower probability of errors from interference than longer packet fragments,
but shorter packet fragments require more error correction.
Which type of interframe space provides the highest level of priority network
function control over the medium for a short time period? - ANSWERS-Short
interframe space (SIFS).
How are interframe spaces used in an IEEE 802.11 wireless local area network
(WLAN)? - ANSWERS-They are used to defer a station's access to the medium and
provide various levels of priority.
What is a slot time in an IEEE 802.11 wireless local area network (WLAN)? -
ANSWERS-A standard period of time on a WLAN that each station multiplies by a
, random number to determine the length of time to wait before performing a
clear channel assessment (CCA).
What is the purpose of the IEEE 802.11 wireless local area network (WLAN)
superframe? - ANSWERS-To allow fair coexistence between point coordination
function (PCF)-mode and distributed coordination function (DCF)-mode clients on
the network.
What is one reason why broadband cable operators install fiber-optic cable in
stages instead of changing the infrastructure all at once? - ANSWERS-Changing
the infrastructure all at once would cause too many service disruptions.
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-
curb (FTTC) topologies? - ANSWERS-An FTTC is allowed a smaller number of RF
amplifiers between the optical fiber and the customer premises.
Which of these components is used in a passive optical network (PON)? -
ANSWERS-Optical splitters.
Which type of star topology used in a passive optical network (PON) places the
PON splitters into fiber access terminal (FAT) located deep in the network and
closer to the customer premises than the centralized split? - ANSWERS-
Distributed star.
CONVENTIONAL
What does the Institute of Electrical and Electronics Engineers (IEEE) specify as
the maximum allowable power output into the intentional radiator for IEEE
802.11a-, 802.11n-, and 802.11ac-compliant devices operating on the lower
Unlicensed National Information Infrastructure (U-NII) radio band? - ANSWERS-40
milliwatts (mW).
How wide is each of the three wireless local area network (WLAN) Unlicensed
National Information Infrastructure (U-NII) bands? - ANSWERS-100 megahertz
(MHz).
When connecting to a wireless local area network (WLAN), what is the most
important point about the service set identifier (SSID)? - ANSWERS-That the
clients and all access points (AP) must be configured with matching SSIDs.
How does a client locate a wireless local area network (WLAN) when performing
passive scanning? - ANSWERS-The client listens for beacons until it hears a beacon
listing the service set identifier (SSID) of the network it expects to join.
,Why would a wireless local area network (WLAN) administrator rarely see the
"authenticated" step on the access point (AP)? - ANSWERS-Because clients pass
the authentication stage and immediately proceed into the association stage.
Why is shared key authentication considered a security risk in a wireless local area
network (WLAN)? - ANSWERS-The access point (AP) transmits the challenge text
in the clear and receives the same challenge text encrypted with the wired
equivalent privacy (WEP) key.
An independent basic service set (IBSS) is also commonly referred to as which one
of the following? - ANSWERS-Ad hoc network.
What is a wireless local area network (WLAN) service set? - ANSWERS-It describes
the basic components of a fully operational WLAN.
Which term describes the operation mode of a basic service set (BSS)? -
ANSWERS-Infrastructure mode.
In a segmented wireless local area network (WLAN) that has a different Internet
protocol (IP) address for each segment, which solution allows mobile clients to
maintain their connectivity when roaming into different segments? - ANSWERS-To
deploy all access points (AP) on a single virtual local area network (VLAN) using a
flat IP subnet for all APs so that no change of IP address for roaming clients occurs
and all traffic goes through a central controller.
,Which one of the following power management modes populates a traffic
indication map (TIM) in a basic service set (BSS) or extended service set (ESS)? -
ANSWERS-Power save polling (PSP) mode.
As a subscriber enters a hotspot area, what signals their mobile wireless device of
an available Wi-Fi network? - ANSWERS-The access point (AP) advertises to the
wireless device to enable connection.
Which is the largest IEEE 802.11 data frame that can traverse a wireless local area
network (WLAN) without fragmentation? - ANSWERS-2,346 bytes.
What is the tradeoff between the fragmenting of packets into shorter fragments
versus keeping longer packet fragments? - ANSWERS-Shorter packet fragments
have lower probability of errors from interference than longer packet fragments,
but shorter packet fragments require more error correction.
Which type of interframe space provides the highest level of priority network
function control over the medium for a short time period? - ANSWERS-Short
interframe space (SIFS).
How are interframe spaces used in an IEEE 802.11 wireless local area network
(WLAN)? - ANSWERS-They are used to defer a station's access to the medium and
provide various levels of priority.
What is a slot time in an IEEE 802.11 wireless local area network (WLAN)? -
ANSWERS-A standard period of time on a WLAN that each station multiplies by a
, random number to determine the length of time to wait before performing a
clear channel assessment (CCA).
What is the purpose of the IEEE 802.11 wireless local area network (WLAN)
superframe? - ANSWERS-To allow fair coexistence between point coordination
function (PCF)-mode and distributed coordination function (DCF)-mode clients on
the network.
What is one reason why broadband cable operators install fiber-optic cable in
stages instead of changing the infrastructure all at once? - ANSWERS-Changing
the infrastructure all at once would cause too many service disruptions.
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-
curb (FTTC) topologies? - ANSWERS-An FTTC is allowed a smaller number of RF
amplifiers between the optical fiber and the customer premises.
Which of these components is used in a passive optical network (PON)? -
ANSWERS-Optical splitters.
Which type of star topology used in a passive optical network (PON) places the
PON splitters into fiber access terminal (FAT) located deep in the network and
closer to the customer premises than the centralized split? - ANSWERS-
Distributed star.
