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

题目

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.
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相似问题和答案

第1题:

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 LSA

B. type 2 Network LSA

C. type 3 Network Summary LSA

D. type 4 ASBR Summary LSA

E. type 5 AS External LSA

F. type 7 NSSA External LSA


参考答案:A, F

第2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?()

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.


参考答案:C

第3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.


参考答案:B

第4题:

What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multiaccess network?()

  • A、10
  • B、40
  • C、30
  • D、20

正确答案:A

第5题:

What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multiaccess network?()

A.10

B.40

C.30

D.20


参考答案:A

第6题:

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.


参考答案:A, E, F

第7题:

What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi-access network?()

A. 10

B. 40

C. 30

D. 20


参考答案:A

第8题:

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.


参考答案:A

第9题:

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 router
  • B、The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing table
  • C、The restarting router does not remove any stale prefixes after the timer for stale entries expires
  • D、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 updates
  • E、The restarting router removes any stale prefixes after the timer for stale entries expires

正确答案:D,E

第10题:

What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi-access network?()

  • A、10
  • B、40
  • C、30
  • D、20

正确答案:A

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