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Certified Ethical Hacker (CEH) Practice Question

During an internal assessment you perform an unauthenticated snmpwalk against a legacy router using the default community string "public" and obtain the following response (truncated):

SNMPv2-MIB::sysDescr.0 = STRING: "Cisco IOS Software, C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA13"

To confirm the device's exact operating system and version, which commonly accessible MIB object identifier (OID) should you query on most SNMP-enabled network devices?

  • 1.3.6.1.2.1.4.1 (ipForwarding)

  • 1.3.6.1.2.1.1.1.0 (sysDescr)

  • 1.3.6.1.2.1.25.4.2.1.2 (hrSWRunName)

  • 1.3.6.1.2.1.2.2.1.2 (ifDescr)

Certified Ethical Hacker (CEH)
Reconnaissance Techniques
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