The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart，which mechanism is used tocontinue forwarding packets during a switchover？（）A、Reverse Path ForwardingB、Hardware-based forwardingC、UDP forwardingD、Layer 2 Forwarding
The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart，which mechanism is used tocontinue forwarding packets during a switchover？（）
- A、Reverse Path Forwarding
- B、Hardware-based forwarding
- C、UDP forwarding
- D、Layer 2 Forwarding
相关考题：
Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?() A. The router receiving the route translates the Type 7 LSA into a Type 5 LSA.B. The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.C. The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.D. All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.
Refer to the exhibit. The partial configuration for an OSPF ASBR and an Area 0 ABR is shown. Assume the OSPF configurations throughout the network are operable. Which statement about these configurations is true? （）A. The ASBR route - maps are basically useless, because there are no deny prefix - lists.B. LSA Type 5s wil l not be received by the ABR from the ASBR.C. The OSPF backbone will not learn any RFC 1918 addresses.D. The matched prefix - list addresses will be given a metric of 255, which is essentially unreachable.
Refer to the diagram. Which OSPF configuration command is required to configure Area 3 a s atotally stubby area?() A. On the ABR router ospf 10 area 3 stubB. On all Area 3 routers router ospf 10 area 3 stubC. On all Area 3 routers router ospf 10 area 3 stub no - summaryD. On the ABR router ospf 10 area 3 nssaE. On the ABR rou ter ospf 10 area 3 stub no - summary
The Dev － 1 and Dev －3 routers are OSPF neighbors over the Ethernet 0／0 connection. Based on the show ip ospf neighbor output from the Dev － 1 and Dev － 3 routers, which statement is true?() A. Dev - 1 is the DR because it has a lower OSPF router IDB. Dev - 3 is the DR because it has a higher OSPF router priorityC. Both Dev - 1 and Dev - 3 are using the def ault OSPF router priorityD. Dev - 3 is the DR because it has a lower OSPF router IDE. Dev - 1 is the DR because it has a higher OSPF router priority
WhenimplementingbestpracticesforIPSourceAddressSpoofingandDefeatingDenialofServiceAttackswithIPSourceAddressSpoofing,whatRFCiscommonlyusedtoprotectyournetwork?() A.RFC1149B.RFC3704C.RFC1918D.RFC2827
When implementing internet standards you are required to follow RFC’s processes and procedures based onwhat RFC？（）A、 RFC 1769 and mere publicationsB、 Real standards of RFC 1918C、 RFC 1669 real standards andmere publicationsD、 Real standards and mere publications RFC 1796E、 None of the above
Which of the following are not true OSPF LSA rules？（）A、OSPF LSA type 5 triggers an LSA type 7 at an ABR between an NSSA and the backbone areaB、OSPF LSA type 1 triggers an LSA type 3 at an ABR.C、OSPF LSA type 7 triggers an LSA type 5 at an ABR between an NSSA and the backbone areaD、OSPF LSA type 3 triggers an LSA type 4 at an ABR.E、OSPF LSA type 5 triggers an LSA type 7 at an A5BR but only in N5SAsF、OSFP LSA type 2 triggers an LSA type 3 at an ABR
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
RFC（RequestForComments），包含TCP/IP及其相关的信息。一般RFC包括管理信息，要求和指南，协议和标准，度量和统计方法，以及历史资料等。下面关于RFC陈述正确的是（）。A、RFC经常更新，序号越小，越重要，信息越新B、RFC经常更新，序号越大，越重要，信息越新C、RFC经常更新，一个协议只能有一个RFC来说明D、RFC经常更改，一个协议可能有多个RFC来说明
When implementing best practices for IP Source Address Spoofing and Defeating Denial of Service Attacks with IP SourceAddress Spoofing， what RFC is commonly usedto protect your network？（）A、 RFC 1149B、 RFC 3704C、 RFC 1918D、 RFC 2827
单选题When implementing internet standards you are required to follow RFC’s processes and procedures based onwhat RFC？（）A RFC 1769 and mere publicationsB Real standards of RFC 1918C RFC 1669 real standards andmere publicationsD Real standards and mere publications RFC 1796E None of the above
单选题When implementing best practices for IP Source Address Spoofing and Defeating Denial of Service Attacks with IP SourceAddress Spoofing， what RFC is commonly usedto protect your network？（）A RFC 1149B RFC 3704C RFC 1918D RFC 2827
单选题What is the default import routing for OSPF?（）AAccept all OSPF routes and install them into the 3 routing tableBAccept all OSPF routes and install them into the inet7.0 routing tableCAccept all OSPF routes and install them into the inet4.0 routing tableDAccept all OSPF routes and install them into the inet.0 routing table
单选题Which statement about OSPF authentication is true？（）ATo enable OSPF authentication in a network， OSPF area 0 authentications must be enabled firstBThe payload of OSPF version 3 packets contains no authentication informationCOSPF version 3 supports Advanced Encryption StandardDOSPF version 3 uses router ID as a key to encrypt OSPF hello packetsEOSPF MD5 authentication uses TCP， and Plan Test authentication uses UDP