CompTIA Network+

According to the structured troubleshooting methodology, what is the first step when addressing a network problem?

1. AEscalate to the vendor
2. BIdentify the problem and gather information正确
3. CDocument findings and outcomes
4. DImplement the solution immediately

为什么: The methodology begins with identifying the problem by gathering information, questioning users, and determining the scope. Jumping straight to solutions risks fixing the wrong thing. Later steps include establishing a theory, testing it, and documenting.

Which protocol allows network devices to be monitored and managed by collecting metrics such as interface counters and CPU usage?

1. ATFTP
2. BNTP
3. CSNMP正确
4. DSMTP

为什么: SNMP (Simple Network Management Protocol) polls and collects metrics like interface statistics and CPU usage from managed devices. SNMPv3 adds authentication and encryption over earlier versions. It is a foundational tool for network monitoring systems.