The path selection tool can define multiple entries, which of the following tools will automatically generate and reject any entries at the end of the configuration? (Multiple Choice)

• A.Route policy
• B.AS-Path-filter
• C.Community -filter
• D.IP-prefix

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Which of the following statement about deploying ISIS protocol in IPv6 environment is correct?

• A.By default, the DIS priority of the broadcast network interface on Level-1 and Level-2 is 1.
• B.In the same broadcast network, if each router supports both IPv4 and IPv6, the DIS of IPv4 and IPv6 must be the same device.
• C.In broadcast networks, the DIS priorities of IPv4 and IPv6 can be set separately.
• D.Configure ISIS silent on the ISIS interface, then this interface will not send ISIS packets, but will receive ISIS packets.

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The following is the correct procedure for NDP to resolve the link layer address.

• A.False
• B.True

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In broadcast network, the election of DIS is started after the neighbor relationship is established.

• A.False
• B.True

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The second-layer network architecture of a company is as shown in the figure. After the engineer is configured, the services between the departments cannot be communicated. Check the status of the device as follows. Which is the possible reason? (No figure is shown, the MSTP three elements are different, causing the entry to appear on the master port.)

• A.The Region Name configuration between the switches is inconsistent
• B.Instance VLAN mapping configuration between the switches is inconsistent
• C.The BPDU interval configuration between switches is inconsistent.
• D.The Revision Level configuration between switches is inconsistent

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