题目内容:
如表1所示,在某DHCP客户机上捕获了5条报文,并对第5条报文进行了解析,表2是在该客户机捕获上述报文后执行ipconfig/all命令后得到的部分信息。分析表中的信息,并补全表1中空白处的信息。 表1
编号源IP地址目的IP地址报文摘要 110.3.4.5 【11】 DHCP:Request,Type:DHCP release 20.0.0.0 【12】 DHCP:Request,Type:DHCP discover 310.3.4.1255.255.255.255 DHCP:Reply.Type:DHCP offer 4 【13】 255.255.255.255 DHCP:Request,Type:DHCP request 510.3.4.1255.255.255.255 DHCP:Reply。Type:DHCP ack DHCP:----------DHCP Header----------- DHCP:Boot record type=2(Reply) DHCP:Hardware address type=1(10M Ethernet) DHCP:Hardware address length=6 bytes DHCP:Hops=0 DHCP:Transaction id=4619131D DHCP:Elapsed boot time=0 seconds DHCP:Flags=0000 DHCP:0=no broadcast DHCP:Client se/f-assigned address=[0.0.0.0] DHCP:Client address=[【14】] DHCP:Next Server to use in bootstrap=[0.0.0.0] DHCP:Relay Agent=[0.0.0.0] DHCP:Client hardware address=【15】 DHCP:Vendor Information tag=63825363 DHCP:Message Type=5(DHCP Ack) DHCP:Address renewel interval=345600(seconds) DHCP:Address rebinding interval:604800(seconds) DHCP:Request IP Address lease time=691200(seconds) DHCP:Subnet mask=255.255.255.0 DHCP:Gateway address=[10.3.4.1] DHCP:Domain Name Server address=[10.3.4.100] |
Ethernet adapter本地连接: Connection.specific DNS Suffix.: Description...........:Broadcom 440x 10/100 Integrated Controller Physical Address.........:00-01-02-03-04-05 Dhcp Enabled...........:Yes IP Address............:10.3.4.5 Subnet Mask...........:255.255.255.0 Default Gateway.........:10.3.4.1 |
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答案解析: