Quiz
ch 3 quiz
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Perguntas do quiz (20)
1What defines port-based network access control (port-based authentication)?
- A802.11ad
- B802.11f
- C802.3
- D802.1X
2802.11 (a, n, & ac) devices can all operate using the 5 GHz frequency band & are backward compatible with each other
- AVerdadeiro
- BFalso
3in OFDM, it supports data rates of 1, 2, 5.5, and 11 Mbps
- AVerdadeiro
- BFalso
4What operates in the 5 GHz frequency band & has no need to be backward compatible with DSSS or HR/DSSS?
- AOFDM
- BHR/DSSS
- CDSSS
- DERP
5This supports up to four spatial streams, most devices support from one to three spatial streams using this PHY
- AHT (High Throughput)
- BVHT (Very High Throughput
- CERP (Extended Rate PHY)
- DDSSS (Direct Sequence Spread Spectrum)
6What is designed with long-range, low data rate communications & is defined in the 802.11ah amendment?
- AERP
- BS1G
- CHR/DSSS
- DDSSS
7What is the Max Data Rate of ERP?
- A11 Mbps
- B346.6667 Mbps
- C600 Mbps
- D54 Mbps
8What is the max channel width of S1G?
- A22MHZ
- B16MHz
- C2.4 GHz
- D160MHz
9What is the max spatial stream of VHT?
- A4
- B8
- C1
- D6
10What is the band frequency of TVHT?
- A59-790 MHz
- B2.4 MHz
- C695 MHz
- D568.9 Mbps
11What is the maximum data rate of an HR/DSSS PHY transmission?
- A11
- B5.5
- C2
- D1
12In what frequency band does the VHT PHY operate?
- A60 GHz
- B700 MHz
- C2.4 GHz
- D5 GHz
13What PHY is designed to use available frequencies in the TV space?
- AVHT
- BS1G
- CHT
- DTVHT
14What PHY is likely to be most used by low output power, long-range devices that require long battery life?
- ADSSS
- BHR/DSSS
- CS1G
- DVHT
15What amendment, which is to be ratified after 802.11-2016, will be used by IoT devices?
- A802.11ad
- B802.11ac
- C802.11n
- D802.11ah
16What is the max spatial streams supported by an 802.11n (HT) PHY?
- A4
- B1
- C2
- D3
17What is the max channel width supported by an 802.11ac (VHT) PHY?
- A20 MHz
- B40MHz
- C16MHz
- D160MHz
18why should only 20 MHz channels be used in 2.4 GHz WLANs?
- AThe available frequencies in the 2.4 GHz band are too few to support wider channels
- Bno PHYs supports channels wider than 20 MHz in the 2.4 GHz band
- Cbc they are more compatible with the 22 MHz channel widths used in older PHYs
- Dbc 2.4 GHz WLANs use higher ouput power than 5 GHz WLANs
19what amendment to the 802.11 standard provided for QoS in WLANs?
- A802.11i
- B802.11e
- C802.11u
- D802.11r
20what amendment to the 802.11 standard provided for enhanced security to resolve the weakness in WEP?
- A802.11i
- B802.11e
- C802.11u
- D802.11r
Informações
- Descrição
- Quiz sobre ch 3 quiz, criado por Bryan Caudill em 24-05-2019.
- Autor
- Bryan Caudill
- Idioma
- English
- Visualizações
- 49
- Etiquetas
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