OSPF is a link-state routing protocol. It is designed to be run internal to a single (1) system. Each OSPF router maintains an identical(2) describing the autonomous system's topology. From this database, a routing table is calculated by constructing a shortest-path (3).OSPF recalculates routes quickly in the face of topological changes, utilizing aminimum of routing (4) traffic. OSPF provides support for equal-cost multipath. An area routing capability is provided, enabling.an additional level of routing protection and a reduction in routing protocol (5).

空白（2）处应选择（）

A.tree

B.table

C.database

D.record

下列不属于应当给予检察官奖励的情形的是：

A．在检察工作中秉公执法，成绩显著的

B．保护国家、集体和人民利益，使其免受重大损失的

C．临场监督执行死刑时，发现被执行人为怀孕妇女不宜执行死刑，即建议人民法院停止执行的

D．勇于同违法犯罪行为作斗争，事迹突出的