SY0-701 Exam Dumps - CompTIA Security+ Exam 2026

The correct answer is Air-gapped because this architecture deliberately isolates systems from external and internal networks to prevent any direct electronic communication. In the Security+ SY0-701 domain of Security Architecture, air-gapped environments are used to achieve the highest level of protection against network-based threats by physically or logically separating critical systems from untrusted networks such as the internet or even the organization’s internal network.

In this scenario, the CIO requires that network devices cannot connect to the public internet or the local network for firmware updates, and that updates must be performed manually using a portable device. This is a defining characteristic of an air-gapped architecture. Air-gapped systems rely on controlled, manual transfer methods—such as USB drives or other removable media—to introduce updates, ensuring that malware, remote exploits, and supply-chain-based network attacks cannot reach the isolated systems through traditional network paths.

Option A, Microservices, refers to an application design model where software is built as loosely coupled services and does not address physical or logical network isolation. Option C, Software-defined networking, focuses on centralized and programmable network control, not network disconnection. Option D, Serverless, is a cloud computing model where infrastructure management is abstracted away from developers and is incompatible with isolated, offline environments.

The SY0-701 study guide highlights air-gapped architectures as common in high-security environments such as industrial control systems, military systems, financial infrastructure, and environments requiring maximum protection against zero-day exploits and remote compromise. While air-gapping introduces operational overhead and update delays, it significantly reduces attack surface and exposure to external threats.

In summary, an architecture that requires manual updates via portable media and prevents any direct network connectivity is best described as air-gapped, making option B the correct answer.

When new email servers are deployed, organizations must update their SPF (Sender Policy Framework) records to list the new servers as authorized senders. If the SPF DNS record does not include the new IP addresses, recipient mail systems cannot verify the legitimacy of the messages, causing them to be flagged as spam or rejected.

Security+ SY0-701 identifies SPF as a key email authentication mechanism responsible for preventing:

Email spoofing

Unauthorized sender impersonation

False spam detection

Domain reputation issues

CNAME (A) maps domain aliases but does not authenticate email. SMTP (B) is the mail protocol and does not influence spam classification. DLP (C) prevents data leakage, not spam filtering.

Updating the SPF record resolves legitimacy issues by informing receiving mail servers that the new email servers are trusted.

Thus, the correct answer is D: SPF.

AnAPI (B)or Application Programming Interface is the best option when you want toautomate data exchangebetween systems. APIs provide structured, secure, and efficient ways for systems to communicate and are widely used in automation and orchestration tasks.

SOAR (A)is used for broader security orchestration and may use APIs under the hood but is more complex.

SFTP (C)is for manual/automated file transfers.

RDP (D)is for remote desktop access, not data automation.

This is referenced inDomain 1.5: Explain the importance of automation and orchestration in cybersecurityunder“Application programming interfaces (APIs).”

The analyst needs to establish baselines. Abnormal behavior can only be identified reliably when there is a known standard of normal activity. A baseline defines expected server behavior, such as CPU usage, memory consumption, network connections, logon patterns, running processes, service activity, traffic volume, and file access patterns. Once normal behavior is documented, deviations become easier to detect and investigate. Disabling unnecessary ports is system hardening, not behavior analysis. Patching the system reduces known vulnerabilities but does not define what is normal or abnormal. Alert tuning adjusts detection rules to reduce false positives or false negatives, but tuning is stronger after baselines are understood. Therefore, baseline establishment is the correct operational step for identifying abnormal server behavior.

Virtualization (D)allows multiple systems and services to be hosted onfewer physical machines, therebyreducing the total number of physical devicesand consequently thehardware attack surface. This also allows for better patching, monitoring, and control.

The fewer devices you manage physically, the fewer entry points there are for attackers to exploit hardware-level vulnerabilities.

The correct answer is C. Password, authentication token, thumbprint. This combination of authentication factors satisfies the manager’s goal of implementing multifactor authentication that uses something you know, something you have, and something you are.

Something you know is a type of authentication factor that relies on the user’s knowledge of a secret or personal information, such as a password, a PIN, or a security question. A password is a common example of something you know that can be used to access a VPN12

Something you have is a type of authentication factor that relies on the user’s possession of a physical object or device, such as a smart card, a token, or a smartphone. An authentication token is a common example of something you have that can be used to generate a one-time password (OTP) or a code that can be used to access a VPN12

Something you are is a type of authentication factor that relies on the user’s biometric characteristics, such as a fingerprint, a face, or an iris. A thumbprint is a common example of something you are that can be used to scan and verify the user’s identity to access a VPN12

The first step in securing a newly deployed server is toclose unnecessary service ports. Open ports can expose the server to unauthorized access and potential cyber threats. By closing unused ports, the attack surface is reduced, limiting the number of entry points available to attackers.

Updating the software version (B)andupgrading the OS version (D)are important security measures but should follow the step of securing open ports to prevent immediate exposure to threats.

Adding the device to the Access Control List (ACL) (C)is a step in network security but does not directly secure the server itself against potential attacks.

Closing unnecessary ports helps in minimizing the risk of network-based attacks, such asport scanning and exploitation of default services.