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OSPF hello 数据包有什么功能？
A．请求来自邻居路由器的特定链路状态记录
B．确保路由器之间的数据库同步
C．发现邻居并与其建立邻接关系
D．发送所请求的特定链路状态记录
参考答案和解析
发现邻居并与其建立邻接关系
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考题
During OSPF adjacency formation, in which state is a router in when an OSPF hello packet has been sent but bi－directional communication has not been achieved?()
A.AB.BC.CD.D
考题
Refer to the exhibit. Which statement is true about the configuration? ()
A. RTA will not establish an OSPF adjacency w ith RTBB. RTA will send OSPF hello packets, but will not send OSPF updatesC. RTA will not accept OSPF hello packets from RTBD. RTA will send OSPF updates, but will not establish an adjacency with RTB
考题
The OSPF hello protocol performs which of the following tasks?()
A. It provides dynamic neighbor discoveryB. It detects unreachable neighbors in 90 second intervalsC. It maintains neighbor relationshipsD. It negotiates correctness parameters between neighboring interfacesE. It uses timers to elect the router witch the fastest links as the designated routerF. It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF
考题
When the Cisco IOS OSPF command ip ospf dead-interval minimal hello-multiplier 5 is configured， which two statements are true？ （）A、OSPF hello interval is 5 secondsB、OSPF hello interval is 1 secondC、OSPF dead interval is 1 secondD、OSPF dead interval is 5 secondsE、OSPF dead interval is 20 secondsF、OSPF hello interval is 0.2 second
考题
The OSPF hello protocol performs which of the following tasks?（）A、It provides dynamic neighbor discoveryB、It detects unreachable neighbors in 90 second intervalsC、It maintains neighbor relationshipsD、It negotiates correctness parameters between neighboring interfacesE、It uses timers to elect the router witch the fastest links as the designated routerF、It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF
考题
Which statement about OSPF authentication is true？（）A、To enable OSPF authentication in a network， OSPF area 0 authentications must be enabled firstB、The payload of OSPF version 3 packets contains no authentication informationC、OSPF version 3 supports Advanced Encryption StandardD、OSPF version 3 uses router ID as a key to encrypt OSPF hello packetsE、OSPF MD5 authentication uses TCP， and Plan Test authentication uses UDP
考题
What is the purpose of the OSPF router ID in a OR/BOR election?（）A、It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB、It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC、It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD、It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
考题
多选题When the Cisco IOS OSPF command ip ospf dead-interval minimal hello-multiplier 5 is configured， which two statements are true？ （）AOSPF hello interval is 5 secondsBOSPF hello interval is 1 secondCOSPF dead interval is 1 secondDOSPF dead interval is 5 secondsEOSPF dead interval is 20 secondsFOSPF hello interval is 0.2 second
考题
多选题Routers R1 and R2 are OSPF neighbors using their Fa0/0 interfaces, respectively, using default settings for all timers. An engineer ad ds the ip ospf hello - interval 6 command to R1's Fa0/0 configuration. Which of the following is true regarding the results from this change?（）AThe show ip ospf neighbor command on R1 lists the revised Hello timerBThe show ip ospf interfac e brief command on R1 lists the revised Hello timerCThe R1 - R2 neighborship fails due to Hello timer mismatcHDThe show ip ospf interface command on R1 lists the revised Hello timer
考题
单选题OSPF Hello包完成哪项作用（）。A
提供动态邻居发现B
每90s检测不可达邻居C
协商两个邻居接口的正确参数D
广播hello包来发现网络中所有的运行OSPF的路由器
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