The answer is system information and version details. This is correct because the OID `1.3.6.1.2.1.1` targets the system group within the MIB-II tree, which is specifically designed to expose device metadata such as the system description, uptime, contact, and OS version. When a tester runs `snmpwalk` with the default `public` community string against this OID, they are performing SNMP enumeration to gather system information and version details without authentication, exploiting a common misconfiguration. On the CEH exam, this technique tests your understanding of how SNMP enumeration fits into the information gathering phase of penetration testing, often appearing in questions about reconnaissance or service enumeration. A common trap is confusing this with network discovery or user enumeration, but remember: the system group OID is strictly for device-level metadata. Memory tip: think of the OID `1.3.6.1.2.1.1` as the "system ID card" — it gives you the device’s name, age (uptime), and contact info.
CEH Enumeration and System Hacking Practice Question
This CEH practice question tests your understanding of enumeration and system hacking. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A penetration tester runs `snmpwalk -c public -v2c 192.168.1.50 1.3.6.1.2.1.1` and receives a list of system descriptions, uptime, and contact information. Which type of information is the tester primarily gathering?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
System information and version details
The `snmpwalk` command with the OID `1.3.6.1.2.1.1` (the system group in MIB-II, defined in RFC 1213) queries the SNMP agent for system-level information. The output includes system description, uptime, contact, and version details, which are all part of the system group. This is a classic enumeration technique to gather system information and version details from a target device using SNMP with the default public community string.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
SMB share names and permissions
Why it's wrong here
SMB enumeration requires tools like smbclient or enum4linux.
✓
System information and version details
Why this is correct
The system group OID provides hostname, OS version, uptime, and contact info.
Related concept
Read the scenario before looking for a memorised answer.
✗
Network topology and routing tables
Why it's wrong here
Routing tables are under OID 1.3.6.1.2.1.4 (ip group).
✗
Active directory users and groups
Why it's wrong here
LDAP is used for AD; SNMP typically does not expose AD user info.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the system group OID (1.3.6.1.2.1.1) with other MIB branches like the interfaces group or IP group, leading them to incorrectly select network topology or routing tables, but the system group specifically returns device identity and version information.
Detailed technical explanation
How to think about this question
The OID 1.3.6.1.2.1.1 corresponds to the system group in the MIB-II tree, which includes sysDescr (1.3.6.1.2.1.1.1.0), sysUpTime (1.3.6.1.2.1.1.3.0), sysContact (1.3.6.1.2.1.1.4.0), and sysName (1.3.6.1.2.1.1.5.0). In a real-world scenario, a penetration tester might use this to identify outdated firmware or software versions on network devices, which can then be correlated with known vulnerabilities (CVEs) for further exploitation. SNMPv2c uses community strings in plaintext, making it vulnerable to sniffing if the traffic is not encrypted.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CEH exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CEH question in full detail.
Enumeration and System Hacking — This question tests Enumeration and System Hacking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: System information and version details — The `snmpwalk` command with the OID `1.3.6.1.2.1.1` (the system group in MIB-II, defined in RFC 1213) queries the SNMP agent for system-level information. The output includes system description, uptime, contact, and version details, which are all part of the system group. This is a classic enumeration technique to gather system information and version details from a target device using SNMP with the default public community string.
What should I do if I get this CEH question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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