【单选题】
在光分配网络（ODN）中，分光器采用（）级分光，只要业务能正常开通、用户能上网就行。___
A. 二
B. 三
C. 四
D. 五
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答案
D
解析
暂无解析
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【单选题】
在维护过程中，如要接触电力设备，作业人员必须持有（），严格按照电力设备的维护规程对设备进行维护。___
A. 通信工程师证
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D. 安全员证
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正式施工前装机人员应首先做好与用户的（）工作，告知用户公司的一些纪律规定以及服务范围，提供《宽带业务施工确认单》，让用户监督整个安装过程。___
A. 学习
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C. 沟通
D. 握手
【单选题】
装维人员若发现变压器或高压线4米范围内有光分箱，应立即（），并（）。___
A. 停止作业，封锁现场
B. 封锁现场、立即上报
C. 挂警示标志、封锁现场
D. 停止作业、立即上报
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which technology cloud be used on top of an MPLS VPN to add confidentiality ？___
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You have just deployed SNMPv3 in your environment， Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request？___
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Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port？___
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When you edit an IPS subsignature， what is the effect on the parent signature and the family of subsignatures？___
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Refer to the exhibit. What is the effect of the given configuration？___
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Which three descriptions of RADIUS are true？ ___
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【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10？___
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B. enabling BPDU guard on all access ports
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【多选题】
What are two features of transparent firewall mode ___
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【多选题】
Which two models of A sa tend to be used in a data center？___
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【多选题】
Which two statements about hardware-based encrption are true？___
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【多选题】
In which two modes can the Cisco We b Security appliance be de ployed？___
A. as a transparent proxy using the Secure Sockets Layer protocol
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C. explicit proxy mode
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