The answer is to use `smbclient //192.168.1.10/data -N` to attempt a null session connection. This is correct because the initial `smbclient -L //192.168.1.10 -N` command already confirmed a successful null session—meaning the server accepted the connection without a password—and listed the 'data' share as accessible. The logical next step in enumeration is to directly connect to that share with the same null authentication flag, which allows you to browse and download files. On the Certified Ethical Hacker CEH exam, this scenario tests your understanding of SMB null session attacks, a classic technique for information gathering on misconfigured Windows or Samba servers. A common trap is thinking you need credentials or a different tool, but the `-N` flag is the key to maintaining the unauthenticated session. Memory tip: think "List then Link"—first list shares with `-L`, then link to a specific share by dropping the `-L` and using the share path.
CEH Enumeration and System Hacking Practice Question
This CEH practice question tests your understanding of enumeration and system hacking. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 the following command against a Linux server: `smbclient -L //192.168.1.10 -N`. The output lists shares including 'IPC$', 'ADMIN$', and 'data'. Which of the following is the BEST next step to enumerate the 'data' share?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use `smbclient //192.168.1.10/data -N` to attempt a null session connection
The command `smbclient -L //192.168.1.10 -N` performs a null session (no password) listing of SMB shares. The output shows that the 'data' share exists and is accessible without authentication (since the -N flag succeeded). The best next step is to attempt a null session connection to that specific share using `smbclient //192.168.1.10/data -N`, which will mount the share and allow file enumeration. This directly leverages the null session already confirmed by the initial scan.
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.
✗
Run `nmap --script smb-enum-shares -p 445 192.168.1.10`
Why it's wrong here
This would re-enumerate shares, but the tester already knows the share name; connecting is more direct.
✗
Run `enum4linux -a 192.168.1.10` to gather more information
Why it's wrong here
enum4linux already performs comprehensive enumeration, but connecting to the share is a direct next step.
✗
Use `rpcclient -U '' 192.168.1.10` to enumerate users
Why it's wrong here
rpcclient can enumerate users, but the immediate goal is to access the 'data' share.
✓
Use `smbclient //192.168.1.10/data -N` to attempt a null session connection
Why this is correct
This attempts to access the share anonymously; if successful, the tester can list files.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose a broad enumeration tool like enum4linux or an nmap script, thinking they need more information first, when the direct connection to the already-discovered share is the logical and efficient next step in a penetration test.
Detailed technical explanation
How to think about this question
Null session connections (using -N or -U '') rely on SMB's default behavior in older Windows/Linux Samba configurations where anonymous logins are permitted. Once connected to a share, the tester can use commands like `ls`, `get`, and `put` to interact with files. In a real-world engagement, if the 'data' share is writable, this could lead to privilege escalation via file uploads (e.g., cron jobs or web shells).
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: Use `smbclient //192.168.1.10/data -N` to attempt a null session connection — The command `smbclient -L //192.168.1.10 -N` performs a null session (no password) listing of SMB shares. The output shows that the 'data' share exists and is accessible without authentication (since the -N flag succeeded). The best next step is to attempt a null session connection to that specific share using `smbclient //192.168.1.10/data -N`, which will mount the share and allow file enumeration. This directly leverages the null session already confirmed by the initial scan.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A penetration tester runs the following command against a target Linux server: smbclient -L 192.168.1.10 -N. The output lists several shares including 'Admin$', 'C$', and 'IPC$'. Which of the following is the MOST likely next step for further enumeration?
medium
✓ A.Use enum4linux -a 192.168.1.10 to enumerate users and policies
B.Attempt to crack the administrator password using a dictionary attack
C.Perform a port scan to check for open ports
D.Run snmpwalk to retrieve SNMP community strings
Why A: The `smbclient -L` command with the `-N` flag (null session) successfully lists SMB shares on the target, including administrative shares like `Admin$`, `C$`, and `IPC$`. This indicates that null session authentication is enabled, which is a classic entry point for SMB enumeration. The most logical next step is to use `enum4linux -a` to extract detailed information such as user lists, group policies, and share permissions, leveraging the same null session to deepen the enumeration without yet attempting password attacks.
Last reviewed: Jun 24, 2026
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This CEH practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CEH exam.
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