單項選擇題Which cell pattern is recommended for use with frequency hopping?（）

A. 4/12
B. 3/9
C. 7/21
D. 7/7
E. None of these


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1.單項選擇題What does Grade of Service (GoS) mean? （）

A. Number of available subscriber services
B. Number of unsuccessful call set-ups due to congestion
C. Channel utilization
D. Number of successful call set-ups
E. Number of dropped calls

2.單項選擇題What type of interference is produced by other transmitters on the same frequency? （）

A. Double interference
B. Co-channel interference
C. Adjacent channel interference
D. Reflected interference
E. Timing interference

3.單項選擇題Which unit is used for measuring traffic? （）

A. Erlang
B. Bit/second
C. Hertz
D. Subscribers/kHz
E. Subscribers/minute

4.單項選擇題What is the name of the type of fading which is due to shadowing? （）

A. Atmospheric fading
B. Multi-path fading
C. Rayleigh fading
D. Log Normal fading
E. Path loss

5.單項選擇題Which cell plan is designed first and is the basis for future planning?（）

A. Final
B. PQreliminary
C. Coverage
D. Initial
E. Nominal