采用点位控制的数控机床有()。

A.Import policies concern routes received and determine which routes get put into the routing table.

B.Export policies concern routes received and determine which routes get put into the routing table.

C.Export policies are applied before the routing table.

D.Import polices are applied after the routing table.

A. [edit security]

B. [edit protocols]

C. [edit firewall]

D. [edit policy-options]

A. Export policies can evaluate only active routes

B. Export policies can evaluate all routes

C. Export policies can be applied to the forwarding table

D. Export policies can be applied directly to interfaces

A. The Junos OS verifies the match criteria of each policy in order and performs the associated action when a match occurs.

B. Policies are evaluated from right to left as displayed in the Junos OS configuration file.

C. Polices are evaluated based on the order in which they are applied to a routing protocol.

D. Policy processing stops once the last statement in the policy is evaluated.

A. EIGRP can summarize per interface.

B. OSPF router databases remain independent.

C. When they are configured with stubs, EIGRP regularly floods the topology.

D. OSPF topology decisions are made independent of hierarchy or area.

A. Static routes are defined at the [edit routing-instances] hierarchy.

B. Static routes must have a next hop defined.

C. Static routes remain in the routing table until you remove them or until they become inactive.

D. Static routes are learned by neighboring devices and added to their routing tables.

ks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the router’s network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the router’s routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （）.

A．is generating B．generate C．is generated D．generates A．forwarding table B．network interfaces C．routing policies D．destination address A．the destination address and network interfaces B．forwarding table and network interfaces C．the destination address and forward table D．routing policies and routing table

A. clean separation of security and routing policies

B. clean separation of control and forwarding planes

C. modularization of multiple software processes

D. a single hardware platform for all software applications