What information does a router running a link－state protocol use to build and maintain its topological database?()A. hello packetsB. SAP messages sent by other routersC. LSAs from other routersD. beacons received on point-to-point linksE. routing tables r

题目
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

相似考题

1.OSPF is a link-state routing protocol。It is designed to be run internal to a single __（71__system。Each OSPF router maintains an identical __（72）__ describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path __（73）__。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing __（74）__ traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol __（75）__。A.autonomousB.networkC.computerD.server

2.Given the following router output,which configuration file will the router use at its next reload?()A.configB.clientqos.cnfC.startup-configD.running-configuration

3.OSPF is a link-state routing protocol。It is designed to be run internal to a single __（71）__system。Each OSPF router maintains an identical __（72）__ describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path __（73）__。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing __（74）__ traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol__（75）__。71A.autonomousB.networkC.computerD.server

4.Which TCP port does LDP use for its protocol communications?()A.464B.466C.644D.646

更多“What information does a router running a link－state protocol use to build and maintain its topological database?() ”相关问题

  • 第1题：

    What kind of information does a router running a link－state routing protocol need to create and maintain its topological database?()

    A. LSAs from other routers

    B. Beacons received on point-to-point links

    C. hello packets

    D. Routing tables received from neighbors

    E. SAP packets sent by other routers

    F. TTL packets from exclusive routers


    参考答案：A, C

  • 第2题：

    One of the most widely used routing protocols in IP networks is the Routing Information Protocol（RIP）。RIP is the canonical example of a routing protocol built on the（ ）algorithm.Routing protocols in internetworks differ slightly from the idealized graph model.In an internetwork,the goal of the routers to forward packets to various（请作答此空）.
    Routers running RIP send their advertisement about cost every（ ）seconds.A router also sends an update message whenever an update from another router causes it to change its routing table.
    It is possible to use a range of different metrics or costs for the links in a routing protocol.RIP takes the simplest approach,with all link costs being equal（ ）。Thus it always tries to find the minimum hop route.Valid distances are 1 through（ ）。This also limits RIP to running on fairly small networks.

    A.computers
    B.routers
    C.switches
    D.networks

    答案：D
    解析：
    参考译文
    IP网络中广泛使用的路由协议之一是路由信息协议（RIP）。RIP是基于路由算法的路由协议。网络中的路由协议与理想的图算法存在少量的差异。在互联网中，路由器的目的是将数据包转发给不同的。
    运行RIP协议的路由器每秒广播一次路由信息，另外，每当路由器收到其他路由器的更新消息而导致其路由表变化时，就会发送更新消息。
    路由协议使用不同的度量或成本来建立连接是可能的。RIP采用了最简单的方法，所有链路的成本都等于。这样，它总是试图寻找跳数最少的路径。有效的距离范围是从1到。这也限制了RIP只能在相当小规模的网络上运行。

  • 第3题：

    What is the purpose of the NBAR protocol discovery？（）

    • A、to build a Packet Description Language Module （PDLM） file to be used in protocol matching
    • B、to discover applications and build class maps for data classification
    • C、to look into the TCP or UDP payload and classify packets based on the content
    • D、to build a database of all application data that passes through the router and queue the data accordingly

    正确答案:C

  • 第4题：

    hat two things will a router do when running a distance vector routing protocol？（）

    • A、Send periodic updates regardless of topology changes.
    • B、Send entire routing table to all routers in the routing domain.
    • C、Use the shortest-path algorithm to the determine best path.
    • D、Update the routing table based on updates from their neighbors.
    • E、Maintain the topology of the entire network in its database.

    正确答案:A,D

  • 第5题：

    What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）

    • A、LSAs from other routers
    • B、Beacons received on point-to-point links
    • C、hello packets
    • D、Routing tables received from neighbors
    • E、SAP packets sent by other routers
    • F、TTL packets from exclusive routers

    正确答案:A,C

  • 第6题：

    When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）

    • A、The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.
    • B、The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.
    • C、The LSA is dropped and a message is sent to the transmitting router.
    • D、The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.

    正确答案:D

  • 第7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8题：

    多选题
    Which of the following data structures exist on a router for the OSPF routing protocol？（）
    A

    OSPF topology table

    B

    OSPF interface table

    C

    OSPF routing information base

    D

    OSPF link-state database

    E

    OSPF adjacency table

    F

    OSPF neighbor table


    正确答案： B,D
    解析： 暂无解析

  • 第9题：

    单选题
    What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）
    A

    VTP

    B

    802.1 q

    C

    CDP

    D

    Skinny Station Protocol


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）
    A

    LSAs from other routers

    B

    Beacons received on point-to-point links

    C

    hello packets

    D

    Routing tables received from neighbors

    E

    SAP packets sent by other routers

    F

    TTL packets from exclusive routers


    正确答案： E,F
    解析： 暂无解析

  • 第11题：

    单选题
    You observe that the senior database administrator always uses the following command when connecting to Recovery Manager （RMAN）， and then starts executing commands to backup the database files： % rman target / What would be the effect of this command？（）
    A

     RMAN would use the current operating system location to place the backup.

    B

     RMAN would use the control file of the target database to maintain the backup.

    C

     RMAN would use the recovery catalog of the target database to maintain the backup.

    D

     RMAN would use the control file of the target database to maintain the backup metadata.

    E

     RMAN would use the recovery catalog of the target database to maintain the backup metadata.


    正确答案： A
    解析： 暂无解析

  • 第12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13题：

    What two things will a router do when running a distance vector routing protocol?()

    A. Send periodic updates regardless of topology changes.

    B. Send entire routing table to all routers in the routing domain.

    C. Use the shortest-path algorithm to the determine best path.

    D. Update the routing table based on updates from their neighbors.

    E. Maintain the topology of the entire network in its database.


    参考答案：A, D

  • 第14题：

    What two things will a router do when running a distance vector routing protocol? （）

    • A、Send periodic updates regardless of topology changes.
    • B、Send entire routing table to all routers in the routing domain.
    • C、Use the shortest-path algorithm to the determine best path.
    • D、Update the routing table based on updates from their neighbors.
    • E、Maintain the topology of the entire network in its database.

    正确答案:A,D

  • 第15题：

    Which of the following data structures exist on a router for the OSPF routing protocol？（）

    • A、OSPF topology table
    • B、OSPF interface table
    • C、OSPF routing information base
    • D、OSPF link-state database
    • E、OSPF adjacency table
    • F、OSPF neighbor table

    正确答案:B,C,D,F

  • 第16题：

    Which two statements are correct regarding IS-IS?（）

    • A、Routers maintain a single link-state database per area.
    • B、Routers maintain a separate Level 1 link-state database.
    • C、Routers maintain a separate Level 2 link-state database.
    • D、Routers maintain a single Level 1 link-state database across multiple areas.

    正确答案:B,C

  • 第17题：

    By default, how often does a router running IGRP send its complete routing table to its neighbors?（）

    • A、Every 5 minutes
    • B、Every 90 seconds
    • C、Every 60 seconds
    • D、Every 30 seconds

    正确答案:B

  • 第18题：

    What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）

    • A、VTP
    • B、802.1 q
    • C、CDP
    • D、Skinny Station Protocol

    正确答案:C

  • 第19题：

    单选题
    You observe that the senior database administrator always uses the following command when connecting to Recovery Manager （RMAN）， and then starts executing commands to backup the database files：  $ rman target /  What would be the effect of this command？（）
    A

    RMAN would use the current operating system location to place the backup.

    B

    RMAN would use the control file of the target database to maintain the backup.

    C

    RMAN would use the recovery catalog of the target database to maintain the backup.

    D

    RMAN would use the control file of the target database to maintain the backup metadata. 

    E

    RMAN would use the recovery catalog of the target database to maintain the backup metadata.


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    What is the purpose of the NBAR protocol discovery？（）
    A

    to build a Packet Description Language Module （PDLM） file to be used in protocol matching

    B

    to discover applications and build class maps for data classification

    C

    to look into the TCP or UDP payload and classify packets based on the content

    D

    to build a database of all application data that passes through the router and queue the data accordingly


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are correct regarding IS-IS？（）
    A

    Routers maintain a single link-state database per area.

    B

    Routers maintain a separate Level 1 link-state database.

    C

    Routers maintain a separate Level 2 link-state database.

    D

    Routers maintain a single Level 1 link-state database per area.


    正确答案： C,B
    解析： 暂无解析

  • 第22题：

    单选题
    When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）
    A

    The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.

    B

    The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.

    C

    The LSA is dropped and a message is sent to the transmitting router.

    D

    The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    多选题
    What two things will a router do when running a distance vector routing protocol? （）
    A

    Send periodic updates regardless of topology changes.

    B

    Send entire routing table to all routers in the routing domain.

    C

    Use the shortest-path algorithm to the determine best path.

    D

    Update the routing table based on updates from their neighbors.

    E

    Maintain the topology of the entire network in its database.


    正确答案： B,C
    解析： 暂无解析

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