In the OSPF protocol for wide area networks, what is the main difference between a "full stub area" and a "normal stub area"?

• A.Fully stub areas receive Type 5 LSAs (AS external routes), while ordinary stub areas do not.
• B.Fully stub regions receive only Type 1/2 LSAs, while ordinary stub regions receive Type 1/2/3 LSAs.
• C.A fully stub region is no different from a regular stub region, only the configuration is different.
• D.Fully stub areas do not receive Type 3 LSAs (Inter-area summary routes), while regular stub areas do.

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In an MPLS VPN network, which of the following configurations is NOT a necessary condition for
"CE devices and PE devices to exchange routes via BGP "?

• A.Configure BGP neighbors on the D.P device to transmit routes between CE and PE.
• B.Configure routing policies on the CE device to advertise local routes to the PE device.
• C.Configure BGP VPNv4 address family on the PE device.
• D.The BGP neighbor relationship between the CE and PE devices has been configured and successfully established.

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(On a virtualized network deployed using iMaster NCE-Campus, which of the following methods can be used by a network administrator during VN creation to create user network segments?)

• A.Manually create them one by one.
• B.Import them in a batch using a template.
• C.Directly invoke the user network segments in the global resource pool of the fabric.
• D.Create them in a batch through automatic allocation.

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In Huawei's WAN solution, which of the following technologies can optimize the transmission experience of "cross-regional video conferencing" and reduce lag and latency? (Multiple choice)

• A.Video traffic priority scheduling (based on DSCP tag priority forwarding of video data packets)
• B.Dynamic bandwidth adjustment (adjusting video bitrate based on link load)
• C.Fixed video bitrate, not adjusted according to link status .
• D.Edge node caching (caching video streams locally to reduce long-distance transmission latency)
• E.No traffic priority; video and regular data compete for bandwidth.

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(When advertising routes, BGP EVPN uses EVPN Router's MAC Extended Community to carry the Router MAC field of a VTEP.)

• A.TRUE
• B.FALSE

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