What is the function of the helper router during a restart event in OSPF?（）A、Sends Rapid Hellos to the restarting router.B、Maintains Adjancency with restarting router.C、Sends periodic DD packets to the restarting router.D、Floods Type 9 LSAs to all routers indicating a restarting event.
What is the function of the helper router during a restart event in OSPF?（）
- A、Sends Rapid Hellos to the restarting router.
- B、Maintains Adjancency with restarting router.
- C、Sends periodic DD packets to the restarting router.
- D、Floods Type 9 LSAs to all routers indicating a restarting event.
相关考题：
Click the Exhibit button.In the exhibit, what is the purpose of this OSPF configuration?() A. The router sends the file debugOSPF (containing hellos sent and LSA updates) to the syslog server.B. The router traces both OSPF hellos sent and LSA updates, and stores the results in the debugOSPFfile.C. The router traces both OSPF hellos sent and LSA updates, and sends the results to the syslog process with the debugOSPF facility.D. The router traces all OSPF operations, stores the results in the debugOSPF file, and marks both hellos sent and LSAupdates in the file with a special flag.
Within IS－IS, the restart helper performs which task?() A. It sends CSNPs to the restarting router.B. It periodically sends TLV 211 to the restarting router.C. It informs other routers in the domain that a router has restarted.D. It tears down adjacency and sends its entire database after 30 seconds.
Refer to the exhibit. OSPF is configured on all routers in the network. Area 5 is configured as an NSSA areA. The RIPv2 routes are redistributed into the OSPF domain on router R5. What two types of LSAs will be originated by router R5?（）A. type 1 Router LSAB. type 2 Network LSAC. type 3 Network Summary LSAD. type 4 ASBR Summary LSAE. type 5 AS External LSAF. type 7 NSSA External LSA
When verifying the OSPF link state database, which type of LSAs should you expect to see within the different OS PF area types?() A. All OSPF routers in stubby areas can have type 3 LSAs in their database.B. All OSPF routers in stubby areas can have type 7 LSAs in their database.C. All OSPF routers in totally stubby areas can have type 3 LSAs in their database.D. All OSPF routers in totally stubby areas can have type 7 LSAs in their database.E. All OSPF routers in NSSA areas can have type 3 LSAs in their database.F. All OSPF routers in NSSA areas can have type 7 LSAs in their database.
What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is inactive status?() A. It routes all traffic that is addresses to the destination network to the interface indicates in the routing table.B. It sends a copy of its neighbor table to all adjacent routers.C. It sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network.D. It broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.
What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi－access network?() A. 10B. 40C. 30D. 20
What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multiaccess network?() A.10B.40C.30D.20
In which two ways does the BGP graceful restart capability preserve prefix information during a restart？（）A、The peer router sends an end-of RIB message to the restarting routerB、The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing tableC、The restarting router does not remove any stale prefixes after the timer for stale entries expiresD、The router establishes BGP sessions with other routers and relearns the BGP routes from other routers that are also capable of graceful restart. The restarting router waits to receive updates from the neighboring routers. When the neighboring routers send end-of-RIB messages to indicate that they are done sending updates， the restarting router starts sending its own updatesE、The restarting router removes any stale prefixes after the timer for stale entries expires
What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multiaccess network?（）A、10B、40C、30D、20
What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi-access network?（）A、10B、40C、30D、20
Which one of the following answer choices below is true regarding the OSPF topology database?（）A、All entries in the topology database will be included on each router.B、All routers in the same OSPF area will have one topology database.C、The Dijkstra algorithm is used in the creation of the topology database.D、LSA packets are used to update and maintain the topology database.
In which two ways does the BGP graceful capability preserve prefix information during a restart？（）A、The peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.B、The router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates，the restarting router starts sending its own updates.C、The peer router sends an end-of-RIB message to the restarting router.D、The restarting router removes any stale prefixes after the timer for stale entries expires.E、The restarting router does not remove any stale prefixes after the timer for stale entries expires.
Within IS-IS, the restart helper performs which task?（）A、It sends CSNPs to the restarting router.B、It periodically sends TLV 211 to the restarting router.C、It informs other routers in the domain that a router has restarted.D、It tears down adjacency and sends its entire database after 30 seconds.
In IS-IS， how does the restarting router inform its helpers that a restarts event occurred？（）A、Sending out a graceful restart PDUB、Sending an LSP that contains no TLVs.C、Sending out a restarts TLV with the RR bit set.D、Reflooding its LSP with a maximum sequence number.
In IS-IS， how long will the restart helper keep the restarting router in the up state？（）A、The hello dead timer expires.B、The restart duration timer expires.C、The restarting router sets the down bit.D、The restart helper sends out three CSNPs.
What are two examples of RE exception traffic?（）A、BGP updates that travel through the local router and are destined for a remote router.B、OSPF hello packets that are sent from a remote router and are destined for the local router.C、Telnet traffic that is sent from a remote host and is destined for the local router.D、Telnet traffic that travels through the local router and is destined for a remote end host.
In IS-IS, how long will the restart helper keep the restarting router in the up state?（）A、until the hello dead timer expiresB、until the restart duration timer expiresC、until the restarting router sets the down bitD、until the restart helper sends out three CSNPs
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.
单选题Click the Exhibit button. In the exhibit, what is the purpose of this OSPF configuration?（）A The router sends the file debugOSPF (containing hellos sent and LSA updates) to the syslog server.B The router traces both OSPF hellos sent and LSA updates, and stores the results in the debugOSPFfile.C The router traces both OSPF hellos sent and LSA updates, and sends the results to the syslog process with the debugOSPF facility.D The router traces all OSPF operations, stores the results in the debugOSPF file, and marks both hellos sent and LSAupdates in the file with a special flag.
多选题When verifying the OSPF link state database, which type of LSAs should you expect to see within the different OS PF area types?（）AAll OSPF routers in stubby areas can have type 3 LSAs in their database.BAll OSPF routers in stubby areas can have type 7 LSAs in their database.CAll OSPF routers in totally stubby areas can have type 3 LSAs in their database.DAll OSPF routers in totally stubby areas can have type 7 LSAs in their database.EAll OSPF routers in NSSA areas can have type 3 LSAs in their database.FAll OSPF routers in NSSA areas can have type 7 LSAs in their database.
单选题What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multiaccess network?（）A10B40C30D20
单选题What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is inactive status?（）AIt routes all traffic that is addresses to the destination network to the interface indicates in the routing table.BIt sends a copy of its neighbor table to all adjacent routers.CIt sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network.DIt broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.
单选题In IS-IS， how long will the restart helper keep the restarting router in the up state？（）AThe hello dead timer expires.BThe restart duration timer expires.CThe restarting router sets the down bit.DThe restart helper sends out three CSNPs.
单选题Within IS-IS, the restart helper performs which task?（）AIt sends CSNPs to the restarting router.BIt periodically sends TLV 211 to the restarting router.CIt informs other routers in the domain that a router has restarted.DIt tears down adjacency and sends its entire database after 30 seconds.
单选题What is the function of the helper router during a restart event in OSPF?（）ASends Rapid Hellos to the restarting router.BMaintains Adjancency with restarting router.CSends periodic DD packets to the restarting router.DFloods Type 9 LSAs to all routers indicating a restarting event.
单选题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?（）AThe router receiving the route translates the Type 7 LSA into a Type 5 LSA.BThe ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.CThe ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.DAll ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.
多选题In which two ways does the BGP graceful capability preserve prefix information during a restart？（）AThe peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.BThe router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates，the restarting router starts sending its own updates.CThe peer router sends an end-of-RIB message to the restarting router.DThe restarting router removes any stale prefixes after the timer for stale entries expires.EThe restarting router does not remove any stale prefixes after the timer for stale entries expires.