The correct answer is the execution of obfuscated scripts via encoded commands. This is because the `-enc` parameter, short for encoded command, is a native PowerShell feature that allows a Base64-encoded string to be passed directly to the PowerShell executable, effectively bypassing simple string-based detection rules and hiding the true intent of the script from casual log review. On the Microsoft Security Operations Analyst SC-200 exam, this query tests your ability to recognize common attacker tradecraft in advanced hunting, as threat actors frequently use encoded commands to evade signature-based defenses and initial triage. A common trap is confusing encoded command execution with data exfiltration or privilege escalation, but the presence of `-enc` specifically points to obfuscation of the script payload itself. Memory tip: think of `-enc` as “encrypted” in the attacker’s mind—it’s a quick way to hide commands in plain sight.
SC-200 Respond to security incidents Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. 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.
Exhibit
Refer to the exhibit.
```json
// Microsoft Defender XDR advanced hunting query
DeviceProcessEvents
| where Timestamp > ago(7d)
| where FileName in~ ("powershell.exe", "cmd.exe", "wscript.exe")
| where ProcessCommandLine contains "-enc"
| project Timestamp, DeviceName, FileName, ProcessCommandLine
| sort by Timestamp desc
```
An analyst runs this advanced hunting query to investigate suspicious command-line activity. Which type of activity is this query most likely detecting?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Execution of obfuscated scripts via encoded commands
Option B is correct because -enc (encoded command) is commonly used in malicious PowerShell commands to obfuscate. Option A is wrong because port scanning does not use encoded commands. Option C is wrong because data exfiltration typically involves network connections, not encoded commands. Option D is wrong because privilege escalation is not directly indicated by encoded commands.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Execution of obfuscated scripts via encoded commands
Why this is correct
The -enc flag indicates base64-encoded commands used for obfuscation.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
Data exfiltration to external IPs
Why it's wrong here
Data exfiltration is not identified by encoded commands alone.
✗
Privilege escalation attempts
Why it's wrong here
Privilege escalation does not require encoded commands.
✗
Port scanning activity
Why it's wrong here
Port scanning does not involve encoded commands.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Trap categories for this question
Command / output trap
Data exfiltration is not identified by encoded commands alone.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-200 questions on access control and AAA configuration.
Respond to security incidents — This question tests Respond to security incidents — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Execution of obfuscated scripts via encoded commands — Option B is correct because -enc (encoded command) is commonly used in malicious PowerShell commands to obfuscate. Option A is wrong because port scanning does not use encoded commands. Option C is wrong because data exfiltration typically involves network connections, not encoded commands. Option D is wrong because privilege escalation is not directly indicated by encoded commands.
What should I do if I get this SC-200 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-200 questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Authentication checks who the user is.
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