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.
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.
相关考题：
What is the purpose of the RSVP hello interval?() A. It is the size of the RSVP hello packetB. It is how long it maintains RSVP neighborsC. It is the length of time between RSVP hello packetsD. It is how long the router waits before declaring a router to be down
Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?() A. It tears down the BGP session.B. It sends a restart message to the peer.C. It marks all routes from that peer as stale.D. It sends a BGP refresh message to the peer
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. Which statement is co rrect regarding the router configuration shown? () A. The router will rebroadcast any DHCP requests received by this interface out to all interfaces included in the ip helper - address commands.B. The router will rebroadcast any UDP broadcasts received by this interface out to all interfaces included in the ip helper - address commands.C. The router will unicast any DHCP requests received by this interface out to all addresses included in the ip helper - address commands.D. This configuration will not do anything because the ip helper - address command needs to also be applied to the 192.168.23.1 IP address.
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 purpose of configuring router R1 with the "IP Helper address" command？（）A、IP Helper is used to direct BOOTP clients to a BOOTP serverB、IP Helper is used to prevent the router form forwarding IP broadcastsC、IP Helper is used to allow IPX clients to communicate with IP-based serversD、IP Helper is used to accommodate compatibility routers using different IP routing protocolsE、None of the other alternatives apply
What are the two benefits of graceful restart？（）A、Graceful restart allows session information recovery without disruption to the network.B、A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information， which helps the failed node recover faster and does notaffect the current for wardtraffic.C、Graceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO.D、Graceful restart does not allow session information recovery.E、During a graceful restart， the router removes any stale prefixes after a timer for stale entries expires
What is the purpose of the RSVP hello interval?（）A、It is the size of the RSVP hello packetB、It is how long it maintains RSVP neighborsC、It is the length of time between RSVP hello packetsD、It is how long the router waits before declaring a router to be down
Which three pre-conditions must be met before an OSPF router can perform graceful restart？（）A、Router must be ABRB、Router must contain one sham link.C、The network topology must be stable.D、Router must be able to forward packets.E、Neighbors must support graceful restart.
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.
Which two of the following actions must an OSPF NSF-capable router execute after a supervisor engine switchover?（） (Choose two.)A、Re-learn the available OSPF neighbors with neighbor relationship restartB、Send the graceful restart messageC、Re-acquire the link state database content for the networkD、Re-learn the available OSPF neighbors without neighbor relationship restart
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.
You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?（）A、Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.B、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.C、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.D、The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
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、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 pre-conditions must be met before an OSPF router can perform graceful restart？（）A、Router must be ABRB、Router must contain one sham link.C、The network topology must be stable.D、Router must be able to forward packets.E、Neighbors must support graceful restart.
Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）A、It tears down the BGP session.B、It sends a restart message to the peer.C、It marks all routes from that peer as stale.D、It sends a BGP refresh message to the peer
Which three pre-conditions must be met before an OSPF router can perform graceful restart? （）A、Router must be an ABR.B、Router must contain one sham link.C、The network topology must be stable.D、Router must be able to forward packets.E、Neighbors must support graceful restart.
多选题Which three pre-conditions must be met before an OSPF router can perform graceful restart? （）ARouter must be an ABR.BRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
多选题Which three pre-conditions must be met before an OSPF router can perform graceful restart？（）ARouter must be ABRBRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
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 purpose of configuring router R1 with the "IP Helper address" command？（）AIP Helper is used to direct BOOTP clients to a BOOTP serverBIP Helper is used to prevent the router form forwarding IP broadcastsCIP Helper is used to allow IPX clients to communicate with IP-based serversDIP Helper is used to accommodate compatibility routers using different IP routing protocolsENone of the other alternatives apply
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 action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）AIt tears down the BGP session.BIt sends a restart message to the peer.CIt marks all routes from that peer as stale.DIt sends a BGP refresh message to the peer
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.