A company needs to connect to the WAN to form a corporate network, and the bandwidth of the connection is required to be greater than 1Mbps. Which of the following interfaces and protocols are available?

• A.V.35 protocol interface and cable, using PPP as the link layer protocol
• B.BRI interface and cable, bundling multiple time slots, using PPP as the link layer protocol.
• C.PRI interface and cable, bundle multiple time slots, use PPP as the link layer protocol
• D.V.35 protocol interface and cable, using Frame Relay as the link layer protocol

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The WAN interface S0/0 of the customer's two routers MSR-1 and MSR-2 uses the PPP protocol, and the routers learn the routes from each other by configuring RIP. The following configuration is available on MSR-1: rip 1 network 0.0.0.0 import -route static # ip route-static 0.0.0.0 0.0.0.0 Serial0/0 Then the wrong explanation about this configuration is ______.

• A.Through the above configuration, MSR-1 will not dynamically advertise the default route to the peer through RIP
• B.RIP 1 in the configuration means that the configured RIP version is V1
• C.RIP imports the statically configured default route and advertises it to MSR-2
• D.By configuring MSR-1 as above, the default route can be dynamically advertised to the peer through RIP

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Common FTP file transfer types include ______. (Multiple choice)

• A.ASCII code type
• B.EBCDIC type
• C.Local type
• D.Binary type

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The correct statement about STP, RSTP and MSTP is ______. (Multiple choice)

• A.RSTP is an optimized version of the STP protocol. The delay for the port to enter the forwarding state is greatly shortened under certain conditions, which shortens the time required for the network to finally reach topological stability.
• B.MSTP is compatible with STP and RSTP.
• C.MSTP can make up for the shortcomings of STP and RSTP. It can not only converge quickly, but also enable the traffic of different VLANs to be forwarded along their respective paths, thereby providing a better load sharing mechanism for redundant links.
• D.STP cannot converge quickly. When the network topology changes, the originally blocked port will need to wait for a period of time before it becomes the forwarding state.

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The characteristics of MSTP are ______. (Multiple choice)

• A.None of the above statements are correct
• B.MSTP is compatible with STP and RSTP.
• C.MSTP divides a switching network into multiple domains, each of which forms multiple spanning trees, and the spanning trees are independent of each other.
• D.MSTP trims the loop network into a loop-free tree network, avoiding the proliferation and infinite loops of messages in the loop network, and at the same time, it can also provide a redundant path for data forwarding, which is implemented in the data forwarding process. Load balancing of VLAN data.

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