Reusing frequencies in a cellular pattern (compared to “one big cell”)()
第1题:
An administrator receives reports from users in an office that their 802.11g wireless connectivityhas been problematic since the installation of the new wireless phone system.At which of the following frequencies are both systems operating at to cause this issue?()
A.2.4GHz
B.900MHz
C.1.1GHz
D.5GHz
第2题:
The broadcast will normally be made on the two listed frequencies simultaneously except during transmitter maintenance periods when the broadcast will be made on the two frequencies ______.
A.at the same time
B.exclusively
C.within the same period
D.consecutively
第3题:
Nowadays people sometimes separate their waste to make it easier for it .
A. reusing B. reused C. reuses D. to be reused
第4题:
Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two.)()
第5题:
第6题:
A.copier
B.microwave oven
C.toaster
D.cordless phone
E.IP phone
F.AM radio
第7题:
Which frequencies and modes are allocated for distress alerting in GMDSS ________.
A.406 MHz via EPIRB
B.1626.5-1645.5 via INMARSAT
C.Channel 70 DSC plus six(6)MF/HF DSC frequencies
D.All of the above
第8题:
A.The HVDC (high voltage DC) transmission
B.The EHV (extra-high voltage) AC transmission
C.The AC distribution
D.Generators
第9题:
第10题:
最早发现细胞并将其命名为cellula的学者是:()