What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS － IS link － state databases are synchronized?()A. complete SNP (CSNP)B. partial SNP (PSNP)C. database queryD. database description packet (DDP)E. link - state summaryF.

题目
What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS － IS link － state databases are synchronized?()

A. complete SNP (CSNP)

B. partial SNP (PSNP)

C. database query

D. database description packet (DDP)

E. link - state summary

F. hello

相似考题

1.There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A‘s DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80.Which statement is true?（）A. Router A remains the DIS and generates a new pseudonode LSP for that LANB. Router A remains the DIS and NO new pseudonode LSP is generated for that LANC. Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router AD. Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A

2.What are the different characteristics of distance vector and link state routing protocols?()A. Distance vector protocols send the entire routing table to directly connected neighbors.B. Distance vector protocols are responsible for sending updates to all networks listed in the routing table.C. Link state protocols are responsible for sending the entire routing table to the whole network.D. Link state protocols send updates regarding their own links status to all other routers on the network.E. None of the above

3.While troubleshooting some connectivity issues，you issue the “show ip ospf database”in order to ex amine the link state database. Which three of the statements below are true regarding the OSPF link state database（）A.Each router has an identical link state database.B.External routes are imported into a separate link state database.C.Syn chronization of link state databases is maintained via floodingo f LSAs.D.Information in the link state database is used to build a routing table by calculating a shortest-path tree.E.By default,link state databases are refreshede very 10 minutes in the absence of topology changes.

4.There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is:Router A: 10.1.1.1/24Router B: 10.1.1.2/24Router C: 10.2.2.1/26Which statement is true about all the adjacencies that exist on that LAN?（）A. No routers are adjacent with each other.B. Only Router A and Router B are adjacent at Level 1.C. Only Router A and Router B are adjacent at Level 2.D. All three routers are adjacent with each other at Level 1.

更多“What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS － IS link － state databases are synchronized?() ”相关问题

  • 第1题：

    What information does a router running a link－state protocol use to build and maintain its topological database?()

    A. hello packets

    B. SAP messages sent by other routers

    C. LSAs from other routers

    D. beacons received on point-to-point links

    E. routing tables received from other link-state routers

    F. TTL packets from designated routers


    参考答案：A, C

  • 第2题：

    Which of following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy？（）

    • A、LSP
    • B、PSNP
    • C、ISH
    • D、CSNP
    • E、IIH

    正确答案:D

  • 第3题：

    Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF). Which two statements best describe the OSPF link - state routing pro tocol?（）

    • A、OSPF sends updates every 10 seconds
    • B、OSPF sends triggered updates when a network change occurs
    • C、When a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it  to all OSPF devices using the 224.0.0.6 multicast address
    • D、OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization

    正确答案:B,D

  • 第4题：

    What are the different characteristics of distance vector and link state routing protocols?（）

    • A、Distance vector protocols send the entire routing table to directly connected neighbors.
    • B、Distance vector protocols are responsible for sending updates to all networks listed in the routing table.
    • C、Link state protocols are responsible for sending the entire routing table to the whole network.
    • D、Link state protocols send updates regarding their own links status to all other routers on the network.
    • E、None of the above

    正确答案:A,D

  • 第5题：

    The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?（）

    • A、Distance vector protocols send the entire routing table to directly connected neighbors.
    • B、Distance vector protocols are responsible for sending updates to all networks listed in the routing table.
    • C、Link state protocols are responsible for sending the entire routing table to the whole network.
    • D、Link state protocols send updates regarding their own links status to all other routers on the network.

    正确答案:A,D

  • 第6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.

    正确答案:C

  • 第7题：

    单选题
    On switch R1 you issue the "udld enable" global command.  What does this command accomplish？ （）
    A

     Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD）

    B

     Enables all copper media LAN ports Unidirectional Link Detection （UDLD）

    C

     Overrides the default UDLS setting for all ports

    D

     Globally enables all ports on the device for Unidirectional Link Detection （UDLS）

    E

     None of the other alternatives apply


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）
    A

    complete SNP (CSNP)

    B

    partial SNP (PSNP)

    C

    database query

    D

    database description packet (DDP)

    E

    link - state summary

    F

    hello


    正确答案： B
    解析： 暂无解析

  • 第9题：

    问答题
    what is the attributes that are required to be sent to BGP neighbors？

    正确答案： next-hop，as-path，origin。
    解析： 暂无解析

  • 第10题：

    单选题
    There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）
    A

    Router A remains the DIS and generates a new pseudonode LSP for that LAN

    B

    Router A remains the DIS and NO new pseudonode LSP is generated for that LAN

    C

    Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A

    D

    Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A


    正确答案： A
    解析： 暂无解析

  • 第11题：

    多选题
    While troubleshooting some connectivity issues， you issue the "show ip ospf database" in order toexamine the link state database. Which three of the statements below are true regarding theOSPF link state database？（）
    A

    Each router has an identical link state database

    B

    External routes are imported into a separate link state database

    C

    Synchronization of link state databases is maintained via flooding of LSAs

    D

    Information in the link state database is used to build a routing table by calculating a shortest-path tree

    E

    By default， link state databases are refreshed every 10 minutes in the absence of topologychanges


    正确答案： E,D
    解析： 暂无解析

  • 第12题：

    多选题
    The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?（）
    A

    Distance vector protocols send the entire routing table to directly connected neighbors.

    B

    Distance vector protocols are responsible for sending updates to all networks listed in the routing table.

    C

    Link state protocols are responsible for sending the entire routing table to the whole network.

    D

    Link state protocols send updates regarding their own links status to all other routers on the network.


    正确答案： A,D
    解析： 暂无解析

  • 第13题：

    What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）

    • A、complete SNP (CSNP)
    • B、partial SNP (PSNP)
    • C、database query
    • D、database description packet (DDP)
    • E、link - state summary
    • F、hello

    正确答案:A

  • 第14题：

    On switch R1 you issue the "udld enable" global command.  What does this command accomplish？ （）

    • A、 Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD）
    • B、 Enables all copper media LAN ports Unidirectional Link Detection （UDLD）
    • C、 Overrides the default UDLS setting for all ports
    • D、 Globally enables all ports on the device for Unidirectional Link Detection （UDLS）
    • E、 None of the other alternatives apply

    正确答案:A

  • 第15题：

    Which of the following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy？（）

    • A、CSNP
    • B、LSP
    • C、ISH
    • D、Hello
    • E、IIH
    • F、PSNP

    正确答案:A

  • 第16题：

    What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）

    • A、PSNP
    • B、CSNP
    • C、LSP
    • D、IIH
    • E、ISH

    正确答案:B

  • 第17题：

    What information does a router running a link-state protocol use to build and maintain its topological database？ （）

    • A、 hello packets
    • B、 SAP messages sent by other routers 
    • C、 LSAs from other routers
    • D、 beacons received on point-to-point links
    • E、 routing tables received from other link-state routers
    • F、 TTL packets from designated routers

    正确答案:A,C

  • 第18题：

    what is the attributes that are required to be sent to BGP neighbors？


    正确答案:next-hop，as-path，origin。

  • 第19题：

    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?（）
    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.


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    What is periodically multicasted （every 10 seconds） by the DIS on a LAN to ensure IS-IS Link StateDatabase accuracy？（）
    A

    PSNP

    B

    CSNP

    C

    LSP

    D

    IIH

    E

    ISH


    正确答案： E
    解析： 暂无解析

  • 第21题：

    单选题
    Which of following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy？（）
    A

    LSP

    B

    PSNP

    C

    ISH

    D

    CSNP

    E

    IIH


    正确答案： C
    解析： 暂无解析

  • 第22题：

    多选题
    What information does a router running a link-state protocol use to build and maintain its topological database?（）
    A

    hello packets

    B

    SAP messages sent by other routers

    C

    LSAs from other routers

    D

    beacons received on point-to-point links

    E

    routing tables received from other link-state routers

    F

    TTL packets from designated routers


    正确答案： E,F
    解析： 暂无解析

  • 第23题：

    多选题
    What are the different characteristics of distance vector and link state routing protocols?（）
    A

    Distance vector protocols send the entire routing table to directly connected neighbors.

    B

    Distance vector protocols are responsible for sending updates to all networks listed in the routing table.

    C

    Link state protocols are responsible for sending the entire routing table to the whole network.

    D

    Link state protocols send updates regarding their own links status to all other routers on the network.

    E

    None of the above


    正确答案： D,C
    解析： 暂无解析

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