A switch runs MSTP. The configuration is shown in the figure. What is the role of this switch in MSTI 1?

• A.Secondary root switch
• B.Non-root switch
• C.Root switch
• D.Uncertain

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Regarding BGP Local-Preference, which of the following descriptions are correct? (Multiple choice)

• A.The default value of BGP route Local-Preference is 100
• B.In the BGP route selection rules, Preferred-value has a higher priority than Local-Preference, that is, Preferred-Value is compared preferentially
• C.In the BGP route selection rules, the priority of MED is higher than that of Local-Preference, that is, priority is given to comparing MED
• D.The default value of BGP routing Local-Preference is 0

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Among the following security zones, which one is not the default security zone deployed by the USG series firewall?

• A.DMZ
• B.Trust
• C.Outside
• D.Local

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When the administrator configures VRRP, which of the following is not mandatory? (Multiple choice)

• A.Preemption mode
• B.Virtual IP address
• C.Preemption Delay
• D.Priority of virtual routers

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The function of Hello message in PIM-SM is? (Multiple choice)

• A.Establish and maintain neighbor relationships
• B.Neighbor capability negotiation
• C.Register with RP
• D.Election network segment BDR

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