The following is correct about the LSA of OSPFv3

• A.Inter-Area PrefirLSA also contains LinkLocal Information
• B.Router-LSA and Network-LSA do not contain routing information
• C.When the Referenced Link State Type-2 of the Intra-AreaPrefixLSA, referenced Link State ID Contains the interface ID of the DR
• D.The Link State ID of inter-area prefix-SA, which contains prefix information

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What are the types of link types included in OSPF's route LSA?

• A.VLINK
• B.Stubnet
• C.Fransnet
• D.P-2-P

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The following statement about the Security Alliance SA in IPSec is wrong with ?

• A.IPSec only supports encrypting data using the pair encryption algorithm.
• B.SA is uniquely identified by a triple that includes the Security Parameter Inder ,Security Parameter Inder), the source IP address, and the Security Protocol Number (ASESP) used
• C.Use the display ipsec command to view information such as the encryption method used with another IPSEC peer, the traffic of interest, and so on.
• D.IpSec peers must be at a two-way SA to establish an IPSec VPN connection to close

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Which of the following statements aboutOPS (Open Programmability System) application scenariosisincorrect?

• A.To enable a network device to automatically send a configuration file to the server after the device configuration is saved, users can use the maintenance assistant to create a timer trigger condition and periodically run the Python script.
• B.When the OPS is used to automatically deploy unconfigured devices, a Python script is used to obtain the IP addresses of the software and configuration file server and download the system software and configuration file.
• C.The OPS can reduce the impact of the network environment in some cases. For example, when collected information is transmitted to a server, the Python script can be used to temporarily store the execution result to the device when the network is disconnected. After the network is reconnected, the execution result is transmitted to the server.
• D.The OPS can be used to automatically check the health status of devices.

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When designing IGP routes for an enterprise bearer WAN, ensure that the metric of aggregation-layer links is smaller than that of access-layer links, so that data can be preferentially forwarded over aggregation-layer links.

• A.TRUE
• B.FALSE

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