中通网通信试题大全[网络优化试题之综合试卷二]

1、 2 4 6 8 10 12 14本试题由中国通信网（）独家提供 A. MFRMS (controls the number of paging groups. B. AGBLK (reserves a paging block for access grant. C. Paging strategy (for example, second page in the MSC service area or in the LA. D. Combined or non-combined mapping E. The use of cell broadcast 33. To reduce co-ch

2、annel interference by means of antenna tilt, some prerequisites must be met. Which of the below is not a prerequisite? A. Short site-to-site distance antennas D. Sector antennas E. Narrow vertical beam B. High mounted antennas C. High gain 34. Null fill-in is obtained by: A. Slightly adjusting the p

3、ower fed to the different antenna elements. B. Slightly adjusting the phase of the power fed to the different antenna elements. C. Slightly adjusting both the power and the phase fed to the different antenna elements. D. Slightly tilting the antenna elements with respect to each other. E. Continuous

4、ly moving the antenna elements slightly with respect to each other. 35. A repeater can be used to: A. Increase the capacity locally (in a traffic hot spot. B. Increase the capacity 中通网通信试题大全 | 选取日期 along highways. C. Get better coverage on water. covered is blocked by obstacles. E. For none of these

5、 purposes. 36. A Tower Mounted Amplifier (TMA. can be beneficial in some configurations due to its ability to: D. Get better coverage where the area to be 15 16 A. Improve the uplink sensitivity and compensate for the uplink feeder loss. B. Improve the downlink sensitivity and compensate for the dow

6、nlink feeder loss. C. Improve both uplink and downlink sensitivities. D. Improve the downlink sensitivity, but not compensate for the downlink feeder loss E. Improve the uplink sensitivity, but not compensate for the uplink feeder loss. 37. In a four-way power splitter, the /4-transformer changes th

7、e impedance of the input from 50 . to: A. 200 . B. 100 . C. 50 . (no change. D. 25 . E. 12.5 38. What is the minimum required isolation between two TX antennas at the same site? A. 20 dB B. 30 dB C. 40 dB D. 50 dB E. 60 dB 39. TEMS speech quality index, SQI, is capable of producing speech quality es

8、timates. What is not taken into account? A. Bit error distribution D. C/I distribution B. Frame erasure distribution E. DTX C. Handover events 40. What statement about cell split as a means of increasing capacity is true? A. A 1:4 split increases the capacity per square kilometer by a factor of eigh

9、t. 中通网通信试题大全 | 选取日期 B. In a 1:4 split, the antenna directions on all sites that existed before must be changed 30 degrees. C. In a 1:3 split, the antenna directions on all sites that existed before must be changed 30 degrees. D. A 1:3 split increases the capacity per square kilometer by a factor of

10、six. E. All the statements above are incorrect. 四、简答题（5 分/题） 请简述日常优化流程？ 本试题由中国通信网（）独家提供 二、请按照下列事例简述分析问题并提供可能的解决方案？ 1地域图 村庄B 山脉 Y点 湖 泊 X点 信源站O2 村庄A 湖 泊 Z点 村庄C 中通网通信试题大全 | 选取日期 2条件 信源站到 X 点的直线距离为 5Km；信源站到 Z 点的直线距离为 12Km；信源站 到 Y 点的直线距离为 10Km。 信源站与 X 点可视通，X 点与 Z 点可视通，Y 点与 Z 点可视通，其余之间不可 视通。 17 18 信源站到 X 点的光纤距离为 9 Km，信源站到 Z 点的光纤距离为 25 Km。村庄 B 与村庄