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单选题
What is the purpose of the OSPF link-state update packet?（）
A
describes a change to the OSPF hello timer
B
carries one or more link-state advertisements
C
establishes and maintains neighbor relationships
D
describes the contents of the entire link-state database
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更多 “单选题What is the purpose of the OSPF link-state update packet?（）A describes a change to the OSPF hello timerB carries one or more link-state advertisementsC establishes and maintains neighbor relationshipsD describes the contents of the entire link-state database” 相关考题
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.
考题
What is the purpose of IS－IS level boundaries?()
A. Restrain the formation of adjacencies.B. Control the flooding scope of link-state PDUs.C. Partition the L2 backbone into multiple domains.D. Aggregate L1 domains into a contiguous backbone.
考题
What is the purpose of unicast reverse path forwarding?()
A. to validate packet receipt on interfaces where the traffic should be receivedB. to forward packets out the interfaces where the traffic should be receivedC. to forward packets out the interfaces where the traffic should be sentD. to validate packet receipt on interfaces where the traffic should be sent
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By default, how often does an ERX Edge Router send an OSPF link－state advertisement in a stable network?()
A.AB.BC.CD.D
考题
Which CLI command is used to see the current OSPF link－state database?()
A. show ospf databaseB. show ospf neighborC. show protocols ospfD. show ospf link-state
考题
What is the purpose of the OSPF link－state update packet?()
A. describes a change to the OSPF hello timerB. carries one or more link-state advertisementsC. establishes and maintains neighbor relationshipsD. describes the contents of the entire link-state database
考题
What is the purpose of the OSPF router ID in a OR／BOR election?()
A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
考题
两台运行OSPF协议的路由器通过点对点的链路相连，在两者链路状态数据库达到同步（邻居状态机为FULL）之后的2个小时之内，在两台路由器之间的链路上，一定有下列的那些报文在传递？（）A、HELLO报文（Hello Packet）B、DD报文（Database Description Packet）C、LSR报文（Link State Request Packet）D、LSU报文（Link State Update Packet）E、LSAck报文（Link State Acknowledgmen Packet）
考题
What is the purpose of the NBAR protocol discovery？（）A、to build a Packet Description Language Module （PDLM） file to be used in protocol matchingB、to discover applications and build class maps for data classificationC、to look into the TCP or UDP payload and classify packets based on the contentD、to build a database of all application data that passes through the router and queue the data accordingly
考题
Which of the following data structures exist on a router for the OSPF routing protocol？（）A、OSPF topology tableB、OSPF interface tableC、OSPF routing information baseD、OSPF link-state databaseE、OSPF adjacency tableF、OSPF neighbor table
考题
What is the purpose of the OSPF hello packet？（）A、 advertises reachable networksB、 acknowledges the receipt of update packetsC、 establishes and maintains neighbor relationshipsD、 describes the contents of the link-state database
考题
下列那些OSPF报文中会出现完整的LSA信息？（）A、HELLO报文（Hello Packet）B、DD报文（Database Description Packet）C、LSR报文（LinkState Request Packet）D、LSU报文（LinkState Update Packet）E、LSAck报文（LinkState Acknowledgmen Packet）
考题
OSPF选举DR、BDR时会使用如下的那些报文？（）A、HELLO报文（Hello Packet）B、DD报文（Database Description Packet）C、LSR报文（LinkState Request Packet）D、LSU报文（LinkState Update Packet）E、LSAck报文（LinkState Acknowledgmen Packet）
考题
如果OSPF链路故障，哪个包广播网络的变化（）A、Link-state advertisementB、Database DescriptionC、Link-state requestD、Link-state update
考题
What is the purpose of the OSPF router ID in a OR/BOR election?（）A、It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB、It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC、It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD、It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
考题
下列（）OSPF报文中会出现完整的LSA信息。A、HELLO报文（Hello Packet）B、DD报文（Database DescRIPtion Packet）C、LSR报文（Link State Request Packet）D、LSU报文（LinkState Update Packet）
考题
What is the purpose of unicast reverse path forwarding?（）A、to validate packet receipt on interfaces where the traffic should be receivedB、to forward packets out the interfaces where the traffic should be receivedC、to forward packets out the interfaces where the traffic should be sentD、to validate packet receipt on interfaces where the traffic should be sent
考题
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.
考题
单选题What is the purpose of the OSPF link-state update packet?（）A
describes a change to the OSPF hello timerB
carries one or more link-state advertisementsC
establishes and maintains neighbor relationshipsD
describes the contents of the entire link-state database
考题
单选题Which CLI command is used to see the current OSPF link-state database?（）A
show ospf databaseB
show ospf neighborC
show protocols ospfD
show ospf link-state
考题
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 matchingB
to discover applications and build class maps for data classificationC
to look into the TCP or UDP payload and classify packets based on the contentD
to build a database of all application data that passes through the router and queue the data accordingly
考题
单选题What is the purpose of the OSPF hello packet？（）A
advertises reachable networksB
acknowledges the receipt of update packetsC
establishes and maintains neighbor relationshipsD
describes the contents of the link-state database
考题
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To ask about the automated billing systemB
To update her contact informationC
To report receiving duplicate billsD
To challenge the company’s assertions
考题
单选题What is the purpose of IS-IS level boundaries?（）A
Restrain the formation of adjacencies.B
Control the flooding scope of link-state PDUs.C
Partition the L2 backbone into multiple domains.D
Aggregate L1 domains into a contiguous backbone.
考题
单选题OSPF选举DR、BDR时会使用如下的那些报文？（）。A
HELLO报文（Hello Packet）B
DD报文（Database Description Packet）C
LSR报文（Link State Request Packet）D
LSU报文（Link State Update Packet）
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To confirm this week's scheduleB
To inquire about an upcoming tripC
To provide an update on operationsD
To seek approval for a decision
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