Hierarchical OSPF networks need to be in one area
Multiple OSPF areas must connect to area 0
Single area OSPF networks must be configured in area 1
Areas can be assigned any number from 0 to 63535
Area 0 is called the backbone area
Each OSPF area need to be configured with a loopback interface
第1题：
Starting a Smurf attack
Conducting social engineering
Creating a back door
Launching a DoS attack
第2题：
Application
Presentation
Session
Transport
Internet
Data Link
Physical
第3题：
口服氯化钾
静滴碳酸氢钠
静注高渗葡萄糖
静注葡萄糖酸钙
静滴0.3％氯化钾
第4题：
血钙、磷、碱性磷酸酶
染色体核型分析
血清T3、T4测定
尿三氯化铁试验
脑电图
第5题：
172.31.17.4/30
172.31.51.16/30
172.31.64.0/18
172.31.80.0/22
172.31.92.0/22
172.31.192.0/18
第6题：
LSAs from other routers
Beacons received on point-to-point links
hello packets
Routing tables received from neighbors
SAP packets sent by other routers
TTL packets from exclusive routers
第7题：
hello packets
SAP messages sent by other routers
LSAs from other routers
beacons received on point-to-point links
routing tables received from other link-state routers
TTL packets from designated routers
第8题：
source address and subnet mask
destination address and wildcard mask
source address and wildcard mask
destination address and subnet mask
第9题：
Subnet strategy for private companies.
Manage and scale the growth of the internal network.
Conserve public IP addresses so that we do not run out of them.
Allow access reserved to the devices.
第10题：
苯巴比妥
地西泮
氯丙嗪
苯妥英钠
水合氯醛