During the structured network troubleshooting process, which of the following items require attention in the information collection phase? (Multiple Choice)

• A.How to collect information
• B.Whether authorization is required
• C.What information to collect
• D.Risks in the information collection phase

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Which of the following network features is described by counters such as mean time between failures (MTBF) and mean time to repair (MTTR)?

• A.Security
• B.Cost-effectiveness
• C.Scalability
• D.Availability

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Which of the following items are used to remind customers of information security? (Multiple Choice)

• A.Data backup reminder
• B.Password update reminder
• C.Account sort-out reminder
• D.Log protection reminder

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Current enterprise networks usually use OSPF as the routing protocol.
What precautions are there when OSPF is used? (Choose four.)

• A.Check whether all non-backbone areas are correctly and reliably connected to the backbone area.
• B.Determine that the backbone area will not split.
• C.Verify that OSPF costs can correctly demonstrate the actual bandwidth of links at more than 100 Mbit/ s.
• D.Check the OSPF network topology and ensure that no loop exists when OSPF routes are being calculated.
• E.Check whether secondary optimal routes exist on the network according to OSPF route selection rules.

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To improve STP running stability, a network administrator wants to configure some STP features or protection mechanism on switches. Which of the following configuration roadmaps is correct?

• A.Configure loop protection on positions where loops have occurred so that loops are always blocked.
• B.Configure BPDU protection so that the switch checks the validity of each received BPDU to prevent attacks of forged BPDUs.
• C.Configure the user access port as an edge port to prevent the user from connecting to the switch on this port.
• D.Configure root protection on the user access port to ensure that the user does not connect to a switch with a higher priority.

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