单选题In which hierarchy are routing policies defined?（）A [edit policy-options]B [edit routing-options]C [edit forwarding-options]D [edit protocols]

A. [edit security]

B. [edit protocols]

C. [edit firewall]

D. [edit policy-options]

A. [edit policy-options]

B. [edit routing-options]

C. [edit forwarding-options]

D. [edit protocols]

阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks 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.local

B.OSPF

C.direct

D.BGP

You are investigating routing problems on a device running the Junos OS. You receive the error shown in the exhibit when you attempt to restart the routing process.Which statement describes the problem?（）

A. You have typed an invalid command.

B. You must be in configuration mode to restart the routing process.

C. You do not have permission to restart the routing process.

D. You must wait until close of business to restart the routing process, based on user-defined policy.

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. 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.

A. local

B. OSPF

C. direct

D. BGP

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.No dynamic interior routing protocol can summarize as shown

B.Unless configured otherwise, EIGRP would automatically summa rize the prefixes as shown in the exhibit

C.With this IP addressing scheme, EIGRP can be manually configured to summarize prefixes at the specified summarization points

D.The IP address design lends itself to OSPF Each summarizing router would be an ABR, summarizing to the next area in the address hierarchy