The best answer is C. Execute the file in a sandbox.
A sandbox is an isolated environment used to safely run suspicious files and observe their behavior without risking production systems. In this case, the analyst only used antivirus scanning, which may miss new, obfuscated, or previously unknown ransomware. By executing the file in a sandbox, the analyst could have observed malicious behaviors such as:
file encryption attempts
process spawning
registry changes
network beaconing
suspicious system modifications
This makes sandboxing a much better method for analyzing potentially malicious files than relying only on signature-based antivirus.
Why the other options are incorrect:
A). Review the file in a code editor.This might help in limited cases, but many malicious files are compiled, packed, or obfuscated. It is not a reliable primary analysis method.
B). Monitor the file connections with netstat.Netstat only shows network connections and would not fully reveal ransomware behavior, especially if the malware acts locally before making network connections.
D). Retrieve the file hash and check with OSINT.Hash reputation checks can help identify known malware, but they do not detect new or modified ransomware samples that do not yet appear in threat intelligence sources.
From the SY0-701 perspective, suspicious files should be analyzed using dynamic analysis in a sandbox to identify behavior that static tools may miss. That is why C is the best answer.

A warm site is the best option for a business that does not require immediate failover but wants to reduce the workload required for recovery. A warm site has some pre-installed equipment and data, allowing for quicker recovery than a cold site, but it still requires some setup before becoming fully operational.
Hot sites provide immediate failover but are more expensive and require constant maintenance.
Cold sites require significant time and effort to get up and running after an outage.
Geographically dispersed sites refer to a specific location strategy rather than the readiness of the recovery site.

Job rotation is a security control that involves regularly moving employees to different roles within an organization. This practice helps prevent incidents where a single employee has too much control or knowledge about a specific job function, reducing the risk of disruption when an employee leaves. It also helps in identifying any hidden issues or undocumented processes that could cause problems after an employee's departure.
References:
* CompTIA Security+ SY0-701 Course Content: Domain 5: Security Program Management and Oversight, which includes job rotation as a method to ensure business continuity and reduce risks.

Hardening access to a new database system requires implementing controls that restrict and secure how administrators and applications connect to the database. A jump server (A) is a hardened intermediary system used to manage access to sensitive systems such as databases. By forcing administrators to authenticate through a controlled, monitored jump host instead of connecting directly, organizations reduce attack surfaces and prevent unauthorized lateral movement. Security+ SY0-701 identifies jump servers as critical in securing high-value systems.
A host-based firewall (E) provides system-level traffic filtering directly on the database server. It allows only trusted IPs, ports, and services to communicate with the database, significantly reducing exposure. This is an essential hardening measure because databases should only accept connections from specific application servers or administrative hosts.
NIDS (B) monitors traffic but does not harden access. Monitoring (C) provides visibility but does not restrict access. A proxy server (D) is not typically used for database access. A WAF (F) protects web applications, not internal database systems.
Thus, A (Jump server) and E (Host-based firewall) are the correct hardening controls.