The best hardening action is to disable the unnecessary service because it directly reduces the attack surface of the server. An enabled but unused service, such as Remote Desktop Protocol (RDP) on TCP/3389, is a common vector for brute-force attacks and exploits like BlueKeep (CVE-2019-0708). By disabling unnecessary services, you eliminate these risks without affecting legitimate operations, which is the core principle of server hardening. On the Security+ SY0-701 exam, this concept tests your understanding of attack surface reduction and the principle of least functionality—a key domain in security baselines. A common trap is to think about patching or firewall rules instead, but if a service is never used, disabling it is simpler and more effective than leaving it exposed. Memory tip: “If it’s not needed, it’s a seed for a breach”—always disable unused services first.
SY0-701 Security Architecture Practice Question
This SY0-701 practice question tests your understanding of security architecture. 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.
After building a new file server, an administrator reviews the security baseline and notices that a remote desktop service is enabled even though no one uses it. What is the best hardening action?
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
✓
Disable the unnecessary service
The best hardening action is to disable the unnecessary remote desktop service because it reduces the attack surface. An enabled but unused service, such as Remote Desktop Protocol (RDP) on TCP/3389, is a common vector for brute-force attacks and exploits (e.g., BlueKeep, CVE-2019-0708). Disabling it eliminates this risk without affecting legitimate operations.
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.
✗
Keep the service enabled in case someone needs it later
Why it's wrong here
Leaving unused services on increases the attack surface without a clear business need.
✓
Disable the unnecessary service
Why this is correct
Removing unused services reduces attack surface and aligns the server with the secure baseline.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the server name to make it harder to find
Why it's wrong here
Obscuring a name does not remove the service or its associated risk.
✗
Increase disk space on the server
Why it's wrong here
More storage does not reduce exposure from an unnecessary network service.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'security through obscurity' (e.g., renaming the server) with a proper hardening action, or they may assume that keeping a service enabled 'just in case' is acceptable, when the correct approach is to disable any unnecessary service to minimize the attack surface.
Detailed technical explanation
How to think about this question
Remote Desktop Protocol (RDP) runs on TCP port 3389 by default and, if left enabled, can be discovered via port scanning tools like Nmap. Even if the service is not actively used, it may still be vulnerable to remote code execution flaws (e.g., CVE-2019-0708 in older Windows versions) or credential-stuffing attacks. Disabling the service via the Services console (services.msc) or Group Policy ensures the listening socket is closed, preventing any network-level interaction.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SY0-701 question in full detail.
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Disable the unnecessary service — The best hardening action is to disable the unnecessary remote desktop service because it reduces the attack surface. An enabled but unused service, such as Remote Desktop Protocol (RDP) on TCP/3389, is a common vector for brute-force attacks and exploits (e.g., BlueKeep, CVE-2019-0708). Disabling it eliminates this risk without affecting legitimate operations.
What should I do if I get this SY0-701 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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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. After a server rebuild, an administrator notices that Remote Desktop, SMBv1, and Print Spooler are still enabled on a Windows file server even though the server only stores department documents. The security team also wants to know if future changes drift away from the approved build. What should be implemented?
medium
✓ A.Apply the approved secure baseline and enable configuration drift monitoring against it.
B.Keep the server as-is and rely on the antivirus console to stop misuse.
C.Move the server into a different VLAN and leave the operating system settings unchanged.
D.Schedule a monthly reboot to clear temporary settings and reduce attack surface.
Why A: Option A is correct because applying an approved secure baseline (e.g., via Group Policy or Security Compliance Toolkit) ensures that unnecessary services like Remote Desktop, SMBv1, and Print Spooler are explicitly disabled. Enabling configuration drift monitoring (e.g., using Azure Policy, DSC, or a SIEM) allows the security team to detect and alert on any unauthorized changes that deviate from the baseline, addressing both the immediate risk and the long-term compliance requirement.
Variation 2. After a server rebuild, a Windows administrator notices several unneeded services are still enabled, including Remote Registry and Print Spooler on a server that only hosts a database. What should the administrator do to reduce attack surface and keep the build consistent?
easy
A.Install additional endpoint monitoring agents to compensate for the extra services.
✓ B.Apply the approved secure baseline and disable unnecessary services.
C.Increase the disk encryption key size to protect the running services.
D.Move the server to a different subnet and leave the configuration unchanged.
Why B: Applying an approved secure baseline and disabling unnecessary services (Option B) directly reduces the attack surface by removing potential entry points like Remote Registry (which allows remote modification of the registry) and Print Spooler (which has known privilege escalation vulnerabilities, e.g., CVE-2021-34527). This also ensures build consistency by enforcing a standardized configuration across all servers, which is critical for compliance and manageability in a Windows environment.
Variation 3. A system administrator is creating a secure baseline for a new Linux application server. Which two actions are appropriate hardening steps? Select two.
easy
✓ A.Disable services that the server does not need to perform its job.
✓ B.Close unused listening ports with the host firewall or service configuration.
C.Install extra administrative tools on the server for convenience.
D.Enable passwordless remote shell access for faster troubleshooting.
E.Leave sample accounts and default demo content in place for testing.
Why A: Disabling unnecessary services reduces the attack surface by removing potential entry points for exploitation. In a Linux server baseline, services like Telnet, FTP, or unused web servers should be disabled using systemctl or by removing the associated packages. This aligns with the principle of least functionality, ensuring only required processes run.
Variation 4. After a server rebuild, a Linux database host still has several unnecessary services enabled, including a graphical desktop, Telnet, and a printer service. The operations team wants a secure baseline that prevents the same drift from happening again after future maintenance. Which two actions best address the issue? Select two.
hard
✓ A.Remove the unused packages and disable the unnecessary services and ports.
✓ B.Document the approved build and enforce it with configuration management or drift detection.
C.Allow administrators to enable any service they need without approval during maintenance windows.
D.Keep the default installation profile so vendor updates are easier to apply.
E.Open the firewall broadly and rely only on strong passwords.
Why A: Removing unused packages and disabling unnecessary services directly reduces the attack surface by eliminating potential entry points like Telnet (which transmits credentials in cleartext) and unused printer services. This aligns with the principle of least functionality, ensuring only required services run on the Linux database host.
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Question Discussion
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