Among the following options, which routing prefixes meet the following IP-Prefix conditions? (Multiple choice)
[HUAWEI] ip ip-prefix test index 10 permit 20.0.0.0 16 greater-equal 24 less-equal 28

• A.20.0.0.0/16
• B.20.0.200.0/28
• C.20.0.5.0/24
• D.20.0.100.0/29
• E.20.0.256.0/27

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Which of the following descriptions about DR are correct? (Multiple choice)

• A.DR election is implemented through the Hello message of the PIM protocol.
• B.By default, the interface priority of the PIM router is 1.
• C.During the election process, if the DR priorities are the same, the one with the larger IP address will become the DR.
• D.The receiving end DR is responsible for sending Register messages to the multicast source or RP.
• E.In a multi-access network, the DR acts as a querier for IGMPv1.

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Which of the following attributes must be recognized by all BGP devices and exist in Update messages?

• A.Recognized and must be followed
• B.Optional non-transition
• C.Admittedly arbitrary
• D.Optional Transition

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There can be multiple nodes under a Route-Policy. Different node numbers are identified by node numbers. The relationship between different nodes is an "OR" relationship.

• A.FALSE
• B.TRUE

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The following is the BGP error output information of a router.
<HUAWEL>display bgp error
Error Type: Peer Error
Date/Time:2010-03-2211:40:39
Peer Address:10.1.1.2
Error lnfo Router-id conflict
The wrong description of this information is?

• A.The error occurred at 11:40:39 on March 22, 2010
• B.Error Type shows the error caused by neighbor relationship error
• C.The cause of the error may be due to the wrong writing of the AS number of the peer
• D.The neighbor address of the router is 10.1.1.2

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