A system was running properly until a reboot. Following the reboot， the system LED displayed cycles between 0223 and 0229. Which of the following procedures should be performed next？（）
A、Power down then power up the system
B、Boot into diagnostic mode and run fsck
C、Boot from installation media and run bosboot
D、Boot into maintenance mode and check the bootlist
伪导频小区不需要配置邻区。
A、对
B、错
Which statement describes the UTM licensing model?（）
A、Install the license key and all UTM features will be enabled for the life of the product
B、Install one license key per feature and the license key will be enabled for the life of the product.
C、Install one UTM license key, which will activate all UTM features; the license will need to be renewed when it expires.
D、Install one UTM license key per UTM feature; the licenses will need to be renewed when they expire.
拉线设计应符合下列要求（）。
A、终端杆或终端跨越杆应装设四方拉线或转角120°的三方拉线（单杆用），顶头拉线条数为每条吊线用比吊线程式高一级的顶头拉线
B、地面杆高超过15m的接杆或单杆，应在电杆接合部位或每隔约7m处加装四方拉线或三方拉线一层，拉线程式同吊线的钢绞线程式
C、跨越杆上安装与吊线程式相同的四方拉线一层（H杆左右两杆各装1条顺线拉线）
D、在拉线地锚强度范围内，多层拉线尽可能采用“v”型拉线装置
以下叙述正确的是（ ）。
A、EOF只能作为文本文件的结束标志，其值为-1
B、EOF可以作为所有文件的结束标志
C、EOF只能作为二进制文件的结束标志
D、任何文件都不能用EOF作为文件的结束标志
移动某1800网络共有10M带宽，采用MRP频率复用方式进行频率计划，已知该网络中共有S644，S555，S222等三种站型。则此网络的频率复用因子是：（）
A、8.33
B、8.17
C、10
D、12.5