OBJ 5.4 X

Question 1

Throughput

Answer 1

Actual measure of how much data transferred from a source to its
destination

Question 2

Received signal strength
indication (RSSI) signal strength

Answer 2

Estimated measure of the power level that a radio frequency client
device is receiving from a wireless access point or wireless router

Question 3

Effective isotropic radiated
power (EIRP)/power settings

Answer 3

Maximum power radiated from an ideal isotropic antenna, given its
antenna gain, and the transmitter power of the radio frequency system

Question 4

Antennas

Answer 4

o Vertical Antenna
▪ Radio frequency waves extend outward in all directions away from the antenna and the wireless access point at an equal power level

o Dipole Antenna
▪ Produces radio frequency waves extending outward in two directions

o Yagi Antenna
▪ A unidirectional antenna that sends the radio frequency waves in only
one direction

o Parabolic Grid Antenna
▪ Allows the radio waves to be transmitted in only one direction over a
longer distance than a Yagi antenna
▪ Choose a parabolic or Yagi antenna for site-to-site connections
▪ For indoor use, you are more likely to use omnidirectional and
unidirectional antennas

Question 5

Polarization

Answer 5

▪ The orientation of the electric field (or transmission) from the antenna
▪ Most Wi-Fi networks use vertical polarization

Question 6

Channel utilization

Answer 6

▪ A statistic or measure of the amount of airtime utilization that occurs for a particular frequency or channel
▪ Keep channel utilization under 30% to have a faster wireless network
▪ Access points and clients form a single broadcast domain when they
operate on the same channel

Question 7

Site survey

Answer 7

Process of planning and designing a wireless network to provide the
required wireless solution
● Configure devices to use less utilized channels
● Ensure proper coverage of the entire work areas
● Ensure wireless network is not being blocked or interfering with
physical obstacles within the building

Question 8

Common issues

Answer 8

• Interference
• Channel overlap
• Antenna cable attenuation/signal loss
• RF attenuation/signal loss
• Wrong SSID
• Incorrect passphrase
• Encryption protocol mismatch
• Insufficient wireless coverage
• Captive portal issues
• Client disassociation issues