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Test

q2

michael.0lsn 13 preguntas

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Preguntas del test (13)

  1. 1What is the number of nonoverlapping channels with the 2.4GHz frequency range?
    1. A1
    2. B3
    3. C6
    4. D11
  2. 2Which of the following is the modulation technique used to provide 54Mbps with OFDM?
    1. ABPSK
    2. BDSSS
    3. CQPSK
    4. DQAM
  3. 3What increases bandwidth and resists multipath problems by carrying data in subcarriers?
    1. AQAM
    2. BDSSS
    3. COFDM
    4. DQPSK
  4. 4Which of the following describes fading?
    1. AAnother signal source producing energy on the channel in which you are trying to operate
    2. BThe desired signal reaching the receiving antenna via multiple paths, each of which has different propagation delay and path loss
    3. CA time-varying change in the path loss of a link, with the time variance governed by the movement of objects in the environment, including the transmitter and the receiver themselves
    4. DA function of the frequency that should be provided in the cable specification by the vendor
    5. EThe minimum signal level for the receiver to be able to acceptably decode the information
    6. FThe time delay from the reception of the first instance of the signal until the last instance
  5. 5What is the maximum data rate possible with the OFDM modulation technique BPSK?
    1. A1
    2. B2
    3. C6
    4. D9
    5. E11
  6. 6What is the maximum data rate possible with the OFDM modulation technique QPSK?
    1. A6
    2. B9
    3. C11
    4. D18
    5. E54
  7. 7How wide are the channels in the 2.4GHz frequency?
    1. A11MHz
    2. B20MHz
    3. C22MHz
    4. D54MHz
  8. 8When would you deploy multiple APs in an area?
    1. AWhen the area to be covered limits the range of a single AP and you would like to disable seamless roaming between the APs when users move around in the area
    2. BWhen the area to be covered exceeds the range of a sinlge AP and you would like to enable seamless roaming between the APs when users move around in the area
    3. CWhen you are running a point-to-point wireless network and the bandwidth is saturated
    4. Dwhen you have an unlimited budget and you don't want any holes in your coverage, so it is best to place as many APs as possible if you have the budget.
  9. 9DSSS uses DBPSK and DQPSK with what encoding to achieve 1 and 2Mbps
    1. ACCK
    2. BBarker 11
    3. CQAM
    4. DDQPSK
  10. 10How wide are the channels in the 5GHz frequency?
    1. A11MHz
    2. B20MHz
    3. C22MHz
    4. D54MHz

Información

Descripción
2 WIRELESS Test sobre q2, creado por michael.0lsn el 19/02/2016.
Idioma
English
Visitas
2
Etiquetas
wireless2
Valoración
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