【单选题】
HSWA盘ACT灯显示绿色表示（ ）意义.___
A. 机盘处于主用状态
B. 机盘处于备用状态
C. 机盘运行故障
D. 机盘处于正常工作状态
E.
F.
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答案
D
解析
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IMS是一个在分组域（PS）上的多媒体控制/呼叫控制平台，IMS使得（ ）具有电路域（CS）的部分功能，支持会话类和非会话类的多媒体业务.___
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BGP通过什么协议来连接？（）采用可靠的更新，三次握手。UDP为RIP采用，SNMP是一种网络管理协议，用来管理；IPX是以前NOVELL网用EIGRP（Cisco私用协议）支持___
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当网络拓扑发生改变时（ ） ___
A. 必须发起重新计算生成树的过程
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MAC地址是一个以太网设备的物理地址，具有唯一性，其长度为（ ）位，通常表示为12个16进制数，每2个16进制数之间用冒号隔开.___
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MDU的voip配置中，是否可以将语音路由配置成缺省路由（ ）___
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当网元之间通过以太网方式连接，处于同一以太网的网元的EMU的IP地址必须属于（ ）___
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ONU上报关电告警时，命令行查询ONU状态，该ONU应该显示以下哪种状态.（ ）___
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ONU应根据建筑物提供的安装条件和用户要求，选择合适的安装位置.对于有内部局域网的企事业用户，ONU 应安装在（ ）___
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【单选题】
OPSF邻接的状态Exchange意味着什么？___
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F.
【单选题】
OPSF邻接的状态ExStart意味着什么？___
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F.
【单选题】
当网元之间通过以太网方式连接，处于同一以太网的网元的EMU的IP地址必须属于（ ）___
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BGP协议和自治系统之间的正确关系是（ ）___
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OTDR测量范围是指OTDR获取数据取样的最大距离，此参数的选择决定了取样分辨率的大小.最佳测量范围为待测光纤长度（ ）倍距离之间.___
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PING 命令使用了哪种ICMP消息（ ）___
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PON（Passive Optical Network：无源光纤网络）技术是一种点到多点的光纤接入技术，它由局端侧的OLT、用户侧的（ ）以及ODN组成.___
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