Broadcom 250-580 Exam Questions

Living off the land (LOTL) is a tactic where adversaries leverage existing tools and resources within the environment for malicious purposes. This approach minimizes the need to introduce new, detectable malware, instead using trusted system utilities and software already present on the network.

Characteristics of Living off the Land:

LOTL attacks make use of built-in utilities, such as PowerShell or Windows Management Instrumentation (WMI), to conduct malicious operations without triggering traditional malware defenses.

This method is stealthy and often bypasses signature-based detection, as the tools used are legitimate components of the operating system.

Why Other Options Are Incorrect:

Opportunistic attack (Option A) refers to attacks that exploit easily accessible vulnerabilities rather than using internal resources.

File-less attack (Option B) is a broader category that includes but is not limited to LOTL techniques.

Script kiddies (Option C) describes inexperienced attackers who use pre-made scripts rather than sophisticated, environment-specific tactics.

When a user attempts to connect to a malicious website and download a known threat, the threat passes through SEP's Firewall, Intrusion Prevention System (IPS), and Download Insight in that order. This layered approach helps prevent threats at different stages of the attack chain.

Threat Path Through SEP Protection Features:

Firewall: Blocks or allows network connections based on policy, filtering initial traffic to potentially dangerous sites.

IPS: Monitors and blocks known patterns of malicious activity, such as suspicious URLs or network behavior, providing another layer of defense.

Download Insight: Analyzes file reputation and blocks known malicious files based on reputation data, which is especially effective for files within archives like .rar files.

Why This Order is Effective:

Each layer serves as a checkpoint: the Firewall controls network access, IPS scans for malicious traffic, and Download Insight assesses files for risk upon download, ensuring thorough protection.

Why Other Orders Are Incorrect:

Options with Download Insight or IPS preceding the Firewall do not match SEP's operational order of defense.

The Administrator role is required to use LiveShell in Symantec's Integrated Cyber Defense Manager (ICDm). LiveShell allows administrators to open a command-line interface on endpoints, providing direct access for troubleshooting and incident response.

Why Administrator Role is Necessary:

LiveShell grants high-level access to endpoints, so it is limited to users with Administrator privileges to prevent misuse and ensure only authorized personnel can initiate command-line sessions on endpoints.

Why Other Roles Are Incorrect:

Security Analyst (Option A) and Viewer (Option C) do not have the necessary permissions to execute commands on endpoints.

Any (Option D) is incorrect because LiveShell access is restricted to the Administrator role for security reasons.

To temporarily or permanently block a file, the administrator should use the Deny List option. Adding a file to the Deny List prevents it from executing or being accessed on the system, providing a straightforward way to block suspicious or unwanted files.

Functionality of Deny List:

Files on the Deny List are effectively blocked from running, which can be applied either temporarily or permanently depending on security requirements.

This list allows administrators to manage potentially malicious files by preventing them from executing across endpoints.

Why Other Options Are Not Suitable:

Delete (Option A) is a one-time action and does not prevent future attempts to reintroduce the file.

Hide (Option B) conceals files but does not restrict access.

Encrypt (Option C) secures the file's data but does not prevent access or execution.

To improve access speed for client files stored on a file server, the administrator should Enable Network Cache within the client's Virus and Spyware Protection policy. This setting allows client machines to cache scanned files from the network, thus reducing redundant scans and increasing read speed from the server.

How Network Cache Enhances Read Speed:

When Network Cache is enabled, previously scanned files are cached, allowing subsequent access without re-scanning, which decreases latency and improves access speed.

Why Other Options Are Less Effective:

Adding the server to a trusted host group (Option B) does not directly impact file read speeds.

Creating a firewall allow rule (Option C) allows connectivity but does not affect the speed of file access.

Enabling download randomization (Option D) only staggers update downloads and does not relate to read speeds from a file server.