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2017年05月网络工程师考试上午真题【基础知识】

【66】802.11g的最高数据传输速率为(66)Mb/s。

真题详情及解析

【67-68】结构化综合布线系统分为六个子系统,其中水平子系统的作用是(67),干线子系统的作用是(68)

真题详情及解析

【69】下图为某公司网络管理员规划的新办公大楼网络拓扑图,针对该网络规划,以下说法中不合理的是(69)

真题详情及解析

【70】在对网络设备巡检中,检测到交换机端口有大量的CRC错包,结合错包呈现出不断上涨的趋势,下面故障原因中,不可能的是(70)
[Switch-GigabitEthernet0/0/1]display this interface
GigabitEthernet0/0/1 current state:UP
Line protocol current state : UP
Unicast : 984907,Multicast : 0
Broadcast : 0,Jumbo : 0
CRC : 4782,Giants : 0
Jabbers : 0,Throttles : 0
Runts : 0,DropEvents : 0

真题详情及解析

【71-75】If two communicating entities are in different hosts connected by a network,there is a risk that PDUs will not arrive in the order in which they were sent,because they may traverse(71)paths through the network. If each PDUs is given a unique number,and numbers are assigned(72),then it is a logically simple task for the receiving entity to reorder(73)PDUs on the basis of sequence number.A problem with this scheme is that,with a(74)sequence number field,sequence number will repeat.Evidently,the maximum sequence number must be(75)than the maximum number of PDUs that could be outstanding at any time.

真题详情及解析
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