Question 826 of 1,152

Security Architecture →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is microsegmentation with policy rules applied per workload or per VM. This is correct because microsegmentation operates at the hypervisor or virtual switch level, enabling granular firewall rules that control east-west traffic between VMs even when they share the same subnet and physical host. Unlike VLANs, which segment traffic at Layer 2 based on IP subnets and cannot prevent lateral movement within the same subnet, microsegmentation enforces per-VM policies that block a compromised payroll VM from scanning or reaching other workloads on the host. On the Security+ SY0-701 exam, this question tests your understanding of zero-trust principles and the limitations of traditional network segmentation in virtualized environments. A common trap is choosing VLANs, but remember that VLANs only separate broadcast domains, not traffic within the same subnet. Memory tip: think "micro = per-VM granularity, VLAN = subnet-only separation."

SY0-701 Security Architecture Practice Question

This SY0-701 practice question tests your understanding of security architecture. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.

In a virtualized environment, several workloads share the same physical host and the same IP subnet. After one payroll VM is compromised, the security team wants to prevent that VM from freely scanning or reaching the other workloads on the host. Which control best addresses this lateral-movement risk?

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.

Question 1mediummultiple choice

Study the full virtualization explanation →

A
Microsegmentation with policy rules applied per workload or per VM
Microsegmentation creates fine-grained trust boundaries between workloads, even when they share the same subnet or host. This limits east-west traffic and reduces the ability of a compromised VM to discover or attack neighboring systems. It is the most direct control for this risk.
B
Expanding the subnet mask so all workloads are easier to reach
Why wrong: A larger subnet makes lateral access easier, which is the opposite of the desired security outcome. It increases, rather than reduces, the reachable attack surface.
C
Creating a shared administrator account for all virtual machines
Why wrong: A shared admin account increases exposure and weakens accountability. It does not contain lateral movement between compromised workloads.
D
Disabling DHCP and forcing every VM to use a static IP address
Why wrong: Static addressing can help with management, but it does not stop a compromised VM from communicating with other systems. Address assignment is not the core issue here.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Microsegmentation with policy rules applied per workload or per VM

Microsegmentation allows granular security policies to be applied per workload or per VM, even within the same subnet and on the same hypervisor. By enforcing firewall rules at the virtual switch or hypervisor level, it prevents a compromised payroll VM from scanning or communicating laterally with other VMs on the same host, directly addressing the lateral-movement risk.

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.

✓
Microsegmentation with policy rules applied per workload or per VM
Why this is correct
Microsegmentation creates fine-grained trust boundaries between workloads, even when they share the same subnet or host. This limits east-west traffic and reduces the ability of a compromised VM to discover or attack neighboring systems. It is the most direct control for this risk.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Expanding the subnet mask so all workloads are easier to reach
Why it's wrong here
A larger subnet makes lateral access easier, which is the opposite of the desired security outcome. It increases, rather than reduces, the reachable attack surface.
✗
Creating a shared administrator account for all virtual machines
Why it's wrong here
A shared admin account increases exposure and weakens accountability. It does not contain lateral movement between compromised workloads.
✗
Disabling DHCP and forcing every VM to use a static IP address
Why it's wrong here
Static addressing can help with management, but it does not stop a compromised VM from communicating with other systems. Address assignment is not the core issue here.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse subnetting or IP addressing changes (like expanding the subnet mask or using static IPs) with actual network security controls, failing to realize that only policy-based segmentation at the hypervisor or virtual switch layer can block lateral traffic within the same broadcast domain.

Detailed technical explanation

How to think about this question

Microsegmentation in virtualized environments is typically implemented using distributed firewalls or virtual network overlays (e.g., VMware NSX, Microsoft Hyper-V Network Virtualization) that enforce Layer 2 and Layer 3/4 policies at the virtual NIC or vSwitch port level. This allows zero-trust segmentation even when VMs share the same VLAN or subnet, as traffic is inspected and filtered by the hypervisor kernel before reaching the destination VM. In a real-world scenario, a compromised payroll VM would be blocked from ARP scanning or direct TCP/UDP connections to other VMs, even if they are on the same /24 subnet.

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.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this SY0-701 question test?

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: Microsegmentation with policy rules applied per workload or per VM — Microsegmentation allows granular security policies to be applied per workload or per VM, even within the same subnet and on the same hypervisor. By enforcing firewall rules at the virtual switch or hypervisor level, it prevents a compromised payroll VM from scanning or communicating laterally with other VMs on the same host, directly addressing the lateral-movement risk.

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.

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