网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
What does the command clear ipv6 ospf process accomplish?（）
- A、The shortest path first (SPF) algorithm is performed on the LSA database.
- B、The OSPF adjacencies are cleared and initiated again.
- C、The OSPF database is repopulated. Then the shortest path first (SPF) algorithm is performed.
- D、The route table is cleared. Then the OSPF neighbors are reformed.
参考答案
更多 “What does the command clear ipv6 ospf process accomplish?（）A、The shortest path first (SPF) algorithm is performed on the LSA database.B、The OSPF adjacencies are cleared and initiated again.C、The OSPF database is repopulated. Then the shortest path first (SPF) algorithm is performed.D、The route table is cleared. Then the OSPF neighbors are reformed.” 相关考题
考题
根据下面的文字资料回答 71～75 题 n the following essay，each blank has four choices．Choose the most suitable one from the four choices and write down in the answer sheet．Open Shortest Path First(OSPF)is a（ 1 ）routing algorithm that（ 2 ）work done on the OSI IS-IS intradomain routing protocol．This routing，as compared to distance-vector routing，requires（ 3 ）processing power．The Dijkstra algorithm is used to calculate（ 4 ）OSPF routing table updates only take place when necessary，（ 5 ）at regular intervals．第6题：文中（ 1 ）处正确的答案是（ ）。A．distance-vectorB．link-stateC．flow-basedD．selective flooding
考题
You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds.What could be the cause of this problem?（）A. OSPF authentication errors between some of the routersB. Two routers have the same OSPF router IDC. Issues with mistuned OSPF timersD. OSPF LSA pacing issues between some of the routersE. OSPF neighbor adjacency problems between some of the routers
考题
Which command enables OSPF for IPv6?()
A. router ospf ipv6 process - idB. ipv6 ospf process - idC. router ospf process - idD. ipv6 router ospf process - id
考题
What does the command clear ipv6 ospf process accomplish?()
A. The shortest path first (SPF) algorithm is performed on the LSA database.B. The OSPF adjacencies are cleared and initiated again.C. The OSPF database is repopulated. Then the shortest path first (SPF) algorithm is performed.D. The route table is cleared. Then the OSPF neighbors are reformed.
考题
Which command displays the number of times that the OSPF Shortest Path First (SPF) algorithm has been executed?()
A. show ip protocolB. show ip ospfC. sho w ip ospf databaseD. show ip ospf interface
考题
OSPF is a link-state routing protocol。It is designed to be run internal to a single （）system。Each OSPF router maintains an identical （）describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path （）。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing （74） 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 （）。A.protocol
B.network
C.broadcast
D.multipath
考题
Open Shortest Path First (OSPF) was designed as an （ ） gateway protocol, for use in an autonomous system such as a local area network (LAN). It implements Dijkstra's algorithm, also known as the （ ） path first algorithm. As a link-state routing protocol it was based on the link-state algorithm developed for the ARPANET in 1980 and the IS-IS routing protocol. OSPF was first standardised in 1989 as RFC 1131, which is now known as OSPF version 1.Routing protocols like OSPF calculate the shortest route to a destination through the network based on an algorithm. The first routing protocol that was widely implemented, the （请作答此空）, calculated the shortest route based on hops, that is the number of routers that an IP packet had to traverse to reach the destination host. RIP successfully implemented dynamic routing, where routing tables change if the network topology changes. But RIP did not adapt its routing according to changing network conditions, such as data-transfer rate. Demand grew for a dynamic routing protocol that could calculate the fastest route to a destination. （ ） was developed so that the shortest path through a network was calculated based on the cost of the route, taking into account bandwidth, delay and load. Therefore OSPF undertakes route cost calculation on the basis of link-cost parameters, which can be weighted by the administrator. OSPF was quickly adopted because it became known for reliably calculating routes through large and complex local area networks.As a link state routing protocol, OSPF maintains link state （ ）, which are really network topology maps, on every router on which it is implemented. The state of a given route in the network is the cost, and OSPF algorithm allows every router to calculate the cost of the routes to any given reachable destination. Unless the administrator has made a configuration, the link cost of a path connected to a router is determined by the bit rate (1 Gbit/s, 10 Gbit/s, etc) of the interface. A router interface with OSPF will then advertise its link cost to neighbouring routers through multicast, known as the hello procedure. All routers with OSPF implementation keep sending hello packets, and thus changes in the cost of their links become known to neighbouring routers. The information about the cost of a link, that is the speed of a point to point connection between two routers, is then cascaded through the network because OSPF routers advertise the information they receive from one neighbouring router to all other neighbouring routers. This process of flooding link state information through the network is known as synchronisation. Based on this information, all routers with OSPF implementation continuously update their link state databases with information about the network topology and adjust their routing tables.OSPF has become a popular dynamic routing protocol. Other commonly used dynamic routing protocols are the RIP and the Border Gateway Protocol (BGP). Today routers support at least one interior gateway protocol to advertise their routing tables within a local area network. Frequently implemented interior gateway protocols besides OSPF are RIP, IS-IS, and the proprietary Interior Gateway Routing Protocol (IGRP) by Cisco.A.OSPF
B.RIP
C.IS-IS
D.EIGRP
考题
While troubleshooting some connectivity issues，you issue the “show ip ospf database”in order to ex amine the link state database. Which three of the statements below are true regarding the OSPF link state database（）A、Each router has an identical link state database.B、External routes are imported into a separate link state database.C、Syn chronization of link state databases is maintained via floodingo f LSAs.D、Information in the link state database is used to build a routing table by calculating a shortest-path tree.E、By default,link state databases are refreshede very 10 minutes in the absence of topology changes.
考题
Which command enables OSPF for IPv6?（）A、router ospf ipv6 process - idB、ipv6 ospf process - idC、router ospf process - idD、ipv6 router ospf process - id
考题
Which two statements about MPLS point-to-multipoint traffic engineering （P2MP TE） are true？ （）A、P2MP TE uses an OSPF extension that is different from the OSPF extension that is used in P2P TEB、Loose path is not supported in P2MP TEC、Multiple IP multicast groups can map to one P2MP tunnelD、Affinity is not supported in P2MP TEE、P2MP TE uses Constrained Shortest Path First （CSPF） to calculate paths
考题
The administrator wants to verify the current state of the OSPF database loading process. Which show command should the administrator use?（）A、show ip ospf [process - id] interfaceB、show ip ospf neighborC、show ip ospf [process - id]D、show ip ospf [process - id area - id] database
考题
You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）A、OSPF authentication errors between some of the routersB、Two routers have the same OSPF router IDC、Issues with mistuned OSPF timersD、OSPF LSA pacing issues between some of the routersE、OSPF neighbor adjacency problems between some of the routers
考题
The command "clear ipv6 ospf process" was issued on a router. What does this commandaccomplish？（）A、The route table is cleared. Then the OSPF neighbors are reformedB、The OSPF adjacencies are cleared and initiated againC、The OSPF database is repopulated and then the shortest path first （SPF） algorithm isperformed.D、The shortest path first （SPF） algorithm is performed on the LSA databaseE、None of the other alternatives apply
考题
The OSPF External LSA for prefix x.x.x.x exists in the OSPF database， but the prefix is not installed in therouting table. Which are possible explanations？（）A、Inbound distribute-list is configured under the ospf process and it is denying x.x.x.xB、ASBR origination the LSA is not reachableC、Route to the Forwarding Address in not an internal OSPF routeD、Route to the Forwarding Address is an internal OSPF routeE、Route to the ASBR does not follow the same path as the one to the Forwarding Address
考题
Which command displays the number of times that the OSPF Shortest Path First (SPF) algorithm has been executed?（）A、show ip protocolB、show ip ospfC、sho w ip ospf databaseD、show ip ospf interface
考题
What are two characteristics of the OSPF process identifier?（）A、It is needed to identify a unique instance of an OSPF database.B、It is an optional parameter only necessary if multiple OSPF processes are used.C、It is locally significant.D、It is globally insignificantE、All routers in the same OSPF area must have the same process ID to exchange routing information.
考题
OSPF协议使用的算法是（）A、最短路径优先（Shortest Path First，SPF）算法B、Bellman-Ford算法C、路径向量（Path-Vector）算法D、最小生成树算法
考题
What are two Cisco IOS commands that can be used to view neighbor adjacencies?（）A、show ip ospf interfacesB、show ip ospf protocolsC、show ip ospf neighborsD、show ip ospf database
考题
Which command is used to display the collection of OSPF link states？（）A、show ip ospf lsa database（not A）B、show ip ospf link-stateC、show ip ospf neighborsD、show ip ospf database
考题
When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）A、The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.B、The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.C、The LSA is dropped and a message is sent to the transmitting router.D、The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.
考题
单选题What does the command clear ipv6 ospf process accomplish?（）A
The shortest path first (SPF) algorithm is performed on the LSA database.B
The OSPF adjacencies are cleared and initiated again.C
The OSPF database is repopulated. Then the shortest path first (SPF) algorithm is performed.D
The route table is cleared. Then the OSPF neighbors are reformed.
考题
单选题The command "clear ipv6 ospf process" was issued on a router. What does this commandaccomplish？（）A
The route table is cleared. Then the OSPF neighbors are reformedB
The OSPF adjacencies are cleared and initiated againC
The OSPF database is repopulated and then the shortest path first （SPF） algorithm isperformed.D
The shortest path first （SPF） algorithm is performed on the LSA databaseE
None of the other alternatives apply
考题
单选题OSPF协议使用的算法是（）A
最短路径优先（Shortest Path First，SPF）算法B
Bellman-Ford算法C
路径向量（Path-Vector）算法D
最小生成树算法
考题
单选题Which command enables OSPF for IPv6?（）A
router ospf ipv6 process - idB
ipv6 ospf process - idC
router ospf process - idD
ipv6 router ospf process - id
考题
单选题You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）A
OSPF authentication errors between some of the routersB
Two routers have the same OSPF router IDC
Issues with mistuned OSPF timersD
OSPF LSA pacing issues between some of the routersE
OSPF neighbor adjacency problems between some of the routers
热门标签
最新试卷