ITPEC FE Subject A October 2024 Question 25
Which of the following is a protocol to gather information on network components to manage and troubleshoot the network?
Explanation
SNMP — the Simple Network Management Protocol, used to collect status information from network devices for monitoring and troubleshooting.
An SNMP manager polls agents running on routers, switches and servers, reading values such as interface traffic, error counts and load from each device's MIB; agents can also send unsolicited traps when something goes wrong. It runs over UDP, port 161 for queries and 162 for traps.
Answer (c)
Why not others:
- •(a) NTP — the Network Time Protocol synchronizes device clocks; it does not gather device status
- •(b) SMTP — the Simple Mail Transfer Protocol sends and relays email between servers
- •(d) TELNET — opens a remote terminal session on a host; an administrator can log in and look around, but it is not a protocol for collecting management information from devices
Key rule: "Manage and monitor network devices" points to SNMP (manager, agent, MIB, trap); do not confuse its letters with SMTP, which is mail.
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