Regarding the FTP protocol, is it correct in the description below?

• A.FTP always uses the TCP port to establish a data session and ICP port 21 to establish a control session
• B.FTP always uses TCP port 21 to establish a data session and TCP port 20 to establish a control session
• C.FTP always uses a TCP session to transmit control information and data information
• D.In ftP Activee, the server side tells the client which port it expects to send data on by commanding
  "PORT"
• E.In ftP-style, the client completes the initialization of the TCP session for control and data

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If you delete a declared route entry on a BGP router, the BGP routing ring is triggered to send an Update message for route scattering, which carries the accepted mandatory attribute of the route entry that was discarded.

• A.False
• B.True

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When you troubleshoot a local area network with Huawei equipment deployed, you find that there are a large number of unicast frames with unknown source AC addresses in the local area network . A large number of unknown source MAC addresses single-plug frames can cause the switch the biggest danger is ?

• A.Consume the available bandwidth
• B.Increases the power consumption of the power supply
• C.Memory that occupies the cache ton
• D.Consumes a TCAM table entry
• E.Consume the MAC address table entry available in the system

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With an existing network running OSPF, what types of LSAs cause ISPF operations?

• A.2 ?LSA
• B.3 ?LSA
• C.5 ?LSA
• D.4 ?LSA
• E.1 ?LSA

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Huawei's two switches SWA and SWB are connected together by 7 Ethernet cables, and static link clustering is configured, and the corresponding port on the switch SWA is Ethernet 1/0/1 ?Ethernet1/0/2?Ethernet
1/0/3?Ethernet 1/0/4?Ethernet 1/0/5, Ethernet1/0/6, Ethernet 1/0/7, configured in order of port if the switch SWA, SWB supports only 6 ports per aggregation group

• A.With the same configuration of each port, SWA randomly selects one of the 7 ports as the aggregate group Unselecte port
• B.In the case of consistent configuration of each port, the Ethernet1/0/1 port is an aggregate group Unselected port
• C.With the same configuration of each port, the Ethernet 1/0/7 port is the aggregate group Unselecte port
• D.In the case of consistent configuration of each port, Ethernet 1/0/6 port is an aggregate group Unselected port

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