A reverse proxy is the best answer because it sits in front of a web application and brokers client access to the site. For a public website, a reverse proxy can enforce secure HTTPS access, hide the origin server, terminate TLS, apply filtering rules, and block traffic from known malicious networks before requests reach the web server. This is especially relevant after website defacement, which often involves weaknesses in exposed web services or poor control of public-facing access. A next-generation firewall can block traffic and inspect applications, but it is broader network infrastructure and not as directly suited to front-ending a public website. IPSec gateways are for encrypted tunnels, not broad public web access. An access control server handles authentication, not site shielding.

The correct answer is A. Agent-based.
Agent-based web filtering uses software installed directly on the endpoint. Because the filtering agent runs on the laptop, it can enforce web filtering policies whether the employee is inside the office or working remotely.
This avoids the need to configure additional access back to the corporate network, such as forcing all remote web traffic through an internal proxy or VPN.
Why the other options are incorrect:
B). Centralized proxy
A centralized proxy can provide web filtering, but remote users would typically need to route traffic through the corporate network or proxy service. The question specifically says the organization does not want to configure additional network access.
C). URL scanning
URL scanning checks URLs for malicious or suspicious content, but it is a filtering technique rather than the best deployment type for enforcing web filtering on laptops both inside and outside the office.
D). Content categorization
Content categorization classifies websites by type, such as gambling, social media, malware, or adult content.
However, it does not describe how filtering is enforced for laptops both on and off the corporate network.
Therefore, the best answer is agent-based web filtering.

To mitigate the risk of sensitive data being exfiltrated from the environment, the IT manager should implement a Data Loss Prevention (DLP) solution. DLP monitors and controls the movement of sensitive data, ensuring that unauthorized transfers are blocked and potential data breaches are prevented.
* XDR (Extended Detection and Response) is useful for threat detection across multiple environments but doesn't specifically address data exfiltration.
* SPF (Sender Policy Framework) helps prevent email spoofing, not data exfiltration.
* DMARC (Domain-based Message Authentication, Reporting & Conformance) also addresses email security and spoofing, not data exfiltration.

Mobile Device Management (MDM) allows administrators to configure, update, monitor, and push applications or features to company-provided mobile devices remotely and quickly. The requirement to restore missing features within 48 hours means IT needs centralized control and fast deployment-capabilities MDM provides.
With MDM, IT can:
* Push required apps
* Reconfigure devices
* Enforce security policies
* Restore missing features
* Update OS and settings remotely
COPE (B) relates to ownership and usage policy, not configuration management. EDR (A) protects against malware but cannot restore missing productivity features. FDE (D) encrypts storage and is unrelated to application availability.
MDM is the only option allowing rapid, centralized remediation.
Thus, C is correct.