ACAS - 5.3 Course Study Guide (Latest 2024/2025)

ACAS - 5.3 Course Study Guide What is ACAS? - ✔-ACAS is a network-based security compliance and assessment capability designed to provide awareness of the security posture and network health of DoD networks.

Which of the following best describes the SecurityCenter? - ✔-The central console that provides continuous asset-based security and compliance monitoring A vulnerability is a weakness or an attack that can compromise your system. - ✔-False (a vulnerability does not include an attack) The Nessus scanner monitors data at rest, while the PVS monitors data in motion. - ✔True PVS detects vulnerabilities based on network traffic instead of actively scanning hosts. ✔-True Which ACAS component performs active vulnerability and compliance scanning? - ✔Nessus CMRS is a tool to provide DoD component- and enterprise-level situational awareness by quantitatively displaying an organization's security posture. - ✔-True Select the Task Order for the Implementation of Assured Compliance Assessment Solution (ACAS) for the Enterprise: - ✔-13-670 Which page loads by default when you log in to SecurityCenter? Select the best answer. - ✔-Dashboard Which of the following pages show the date and time of the most recent plugin updates?

- ✔-Plugins, Feeds Which page allows you to set your local time zone? - ✔-Profile What is an organization? - ✔-A group of individuals who are responsible for a set of common assets What is a scan zone? - ✔-A defined static range of IP addresses with an associated Nessus scanner(s)

What is the maximum size of a SecurityCenter 5 Repository? - ✔-32 GB The IP address(es) you are scanning must be contained in both the definition of the scan zone and the definition of the repository. - ✔-True What SecurityCenter role is responsible for setting up scan zones? - ✔-Administrator How can you get your SecurityCenter plugin updates? - ✔-Automatically, from DISA's plugin server, Manually from the DoD Patch Repository The SecurityCenter Plugins menu displays a list of script files used by Nessus and PVS scanners to collect and interpret vulnerability, compliance, and configuration data. - ✔True Which of the following are options you can consider for scanning stand-alone networks?

- ✔-Install both Nessus and SecurityCenter on a Linux Laptop using Kickstart, Install both Nessus and SecurityCenter in virtual machines on a Windows 7 laptop, Detach a Nessus scanner from its SecurityCenter for scanning purposes and then reattach to SecurityCenter to upload scan results Components of an Active Vulnerability Scan consist of: a policy, credentials, scan zone, schedule, _________, and __________. - ✔-Repository, Target list _________ are administrative-level usernames and passwords (or SSH keypairs) used in authenticated scans? - ✔-Credentials You can associate multiple credentials with a single scan. - ✔-True Networks using Dynamic Host Configuration Protocol (DHCP) require that this Active Scan setting be enabled to properly track hosts. - ✔-Track hosts which have been issued IP addresses Which type of scan obtains information by authenticating to the host to access resources not available over the network. - ✔-Credentialed You may only select one import repository per scan. - ✔-True Once a scan is running, you cannot pause or stop the scan until it has completed running. - ✔-False Which Port Scanning Range option tells the scanner to scan only common ports? - ✔default (of 4605 common ports)

In a low-bandwidth environment, which of the following options might you adjust to try to improve scanning performance? - ✔-Max Simultaneous Checks Per Host, Max Simultaneous Hosts Per Scan What is the function of Performance Options in the Scan Policy? - ✔-Determines the impact of a scan related to scan times and network behavior You can configure the targets for your Blackout Window to include which of the following? - ✔-All Systems, Assets, IPs, Mixed Which of the following Scan Policy types allows you to select Plugin Families you want?

- ✔-Custom Advanced Scan Asset lists are dynamically or statically generated lists of hosts. - ✔-True Which type of asset list updates automatically when a scan runs and a repository is updated? - ✔-Dynamic What is a static asset list? - ✔-A list of IP addresses that require user intervention in order to change what defines them What two ways can you use to add a dynamic asset list? - ✔-Use a template or create a set of rules, Create a set of rules or a scan policy When you create dynamic asset list(s), which of the following occurs? - ✔SecurityCenter queries the repository(ies) to find assets that match the dynamic asset list's rules.

Users in different groups using the same shared asset list could see different IP addresses in the list. - ✔-True What two areas in SecurityCenter allow you to analyze scan results? - ✔-The Scan Results page, The Vulnerabilities page SecurityCenter displays vulnerability data at varying levels and views ranging from the highest level summary down to a detailed vulnerability list. - ✔-True What vulnerabilities are stored in SecurityCenter's Cumulative database? - ✔-Current vulnerabilities, including those that have been recast, accepted, or mitigated and found vulnerable on rescan Which analysis tool provides a list of vulnerabilities that relate to DoD Information Assurance Vulnerability Alerts and Bulletins? - ✔-IAVM Summary

Vulnerability filters are available to search on the following categories. - ✔-Vulnerability Information, Targets, ID Numbers, Dates Frequently used _____________ can be saved as _____________ for use in analysis, dashboards, reports, tickets, and alerts. - ✔-filters, queries Vulnerability results can be exported to a comma-separated file by clicking on _______?

- ✔-Options > Export as CSV Which of the following allows you to set an expiration date? - ✔-Accept Risk Which of the following SecurityCenter resources allows you to combine filters to provide customized, saved views of vulnerability scan data? - ✔-Queries PVS monitors data at the _____ layer? - ✔-Packet All of the following are benefits of PVS, except _____. - ✔-Eliminating the need for active scans Which of the following statements is true? - ✔-PVS is capable of highlighting all interactive and encrypted network sessions.

A Passive Vulnerability Scanner is simply a Network Intrusion Detection System (NIDS)? - ✔-False Which of the following vulnerability filter settings results in viewing only vulnerabilities detected by PVS. - ✔-Plugin Type = Passive Systems and devices are compliant when they are _________. - ✔-In accordance with established guidelines, specifications or legislation Compliance auditing identifies deviations from a defined standard, whereas, vulnerability management finds weaknesses that could lead to compromise. - ✔-True Your system can suffer a security breach and still be compliant. - ✔-True Acceptable audit files for SecurityCenter include which of the following? - ✔-Tenable Network Security Templates (SC Feed), DISA STIG Automated Benchmarks (ingested in .zip format), SCAP compliant checklists from NIST (.xccdf) Which SecurityCenter menu option do you use to upload audit files? - ✔-Scans In addition to a Nessus scanner, what are the components of a SecurityCenter compliance audit? - ✔-Compliance plugins, Audit file, system or database credentials

Which vulnerability severity level indicates a failed compliance item? - ✔-High Which of the following SecurityCenter resources define specific configurations for compliance scanning? - ✔-Audit files Which of the following is not a valid SecurityCenter report type? - ✔-HTML You've just added a new report using a template, which option allows you to specify an Asset (List), IP Address, and/or Repository? - ✔-Focus Which report tab allows you to customize your report elements? - ✔-Definition You can change the report type of an existing custom report. - ✔-False Which of the following Distribution options allows you to send report results to a user in a different organization? - ✔-Email Addresses You can add a dashboard from a pre-built dashboard template or create a custom dashboard. - ✔-True The Dashboard Options button displays which of the following selections? - ✔-Add Dashboard, Manage Dashboards, Edit Dashboard, Share Dashboard Which of the following types of information can you display on your Dashboard in SecurityCenter? - ✔-Compliance data, Vulnerability data, Trends, Organizational structure What new functionality was added in SecurityCenter 5 under the Dashboard menu? - ✔Assurance Report Cards All of these are examples of Dashboard components except which one? - ✔-XY Axis Graph You can only add Dashboard components for the existing queries you have set up in the Analysis menu. - ✔-False You've just added a new dashboard using a template, which option allows you to specify the Asset, IP Address, and Repository? - ✔-Focus Clicking the Pushpin icon next to a dashboard name on the Manage Dashboards page will do which of the following? - ✔-Make the dashboard active/inactive

SecurityCenter organizations are that have responsibilities for __________. - ✔-groups of individuals, a set of common assets Which SecurityCenter user role resides at the top of an organization hierarchy? - ✔Security Manager Each SecurityCenter will contain only one Administrator, one Organization, and one Security Manager. - ✔-False What are the options in the Scanning Distribution Method field on the Organization Setup page? - ✔-Automatic Distribution Only, Locked Zone, Selectable Zones SecurityCenter supports an unlimited number of objects: Users, Scan Zones, Repositories, Organizations, and Asset Lists. - ✔-False Security Managers have the ability to assign roles and responsibilities for assets for all organizations within the SecurityCenter. - ✔-False Which SecurityCenter user role creates organizations? - ✔-Administrator When SecurityCenter initiates a scan of a given IP address, ___________. - ✔-It determines what zone the IP address is in and notifies the appropriate scanner.

Which statement about Nessus scanners is NOT correct? - ✔-You must have at least 2 Nessus scanners behind the firewall.

SecurityCenter must be able to connect to each Nessus scanner in your network on a distinct IP address. - ✔-True Which statement about Nessus scanners is correct? Select all that apply. - ✔-Scan Zones are static ranges of IP addresses that can be scanned by one or more Nessus scanners., The same Nessus scanner should not be in multiple Scan Zones.

You're adding a Scan Zone in order to scan a new block of IP addresses. What are the fields on the Add Scan Zone page? - ✔-Name, Ranges, Scanners Which SecurityCenter user role creates Scan Zones? - ✔-Administrator Repositories are proprietary data files residing on the SecurityCenter that store _______? - ✔-Scan data A repository is defined by _________. - ✔-IP address range, MDM data type

Any user can create a new repository. - ✔-False Multiple organizations can have access to the same repository. - ✔-True You can use multiple repositories to: - ✔-Restrict access to data based on organizational needs, Improve reporting time with smaller data sets, Separate compliance and vulnerability data, Resolve technical issues for non-standard network configurations What is the purpose of a remote repository? - ✔-Replicating another SecurityCenter's repository data Which IP address(es) are acceptable when creating a repository in SecurityCenter? - ✔A single IP address, A range of IP addresses, An address CIDR block, A commadelimited combination Local repositories can contain which of the following types of data? - ✔-IP v4, IP v6, Mobile You can combine IPv4 and IPv6 data in the same repository - ✔-False Roles __________. - ✔-Define what a user can do (such as having full, limited, or no scanning permissions).

Groups__________. - ✔-Combine access rights to objects within an organization for quick assignment to one or more users.

Users__________. - ✔-Are individual SecurityCenter accounts.

When creating a custom role, what are the Scanning Permissions that you can assign?

- ✔-Create scans, Create plugin scans Which of the following roles is NOT a predefined SecurityCenter role? - ✔-Information Assurance Manager Which of the following groups is defined for each organization by default? - ✔-Full Access When you create a group, select all of the objects that you could share to the group. ✔-Assets, Assurance Report Cards, Credentials

You are adding a new user. Which of the following access settings apply to that user definition? - ✔-Asset Responsibility, Role, Group, Manage Objects Where do you grant the ability to manage other users and their objects? - ✔-In the Users > User Definition Which of the following are available through SecurityCenter's Workflow functionality? ✔-Alerts and tickets You can configure SecurityCenter to perform alerts based on the following condition types: ___________, ____________, or ____________ . - ✔-Vulnerability, Event, Ticket Occurrences The trigger options for setting a SecurityCenter alert are IP count, Vulnerability/Event count, and _____ count. - ✔-Port What alert function defines what an alert does after it has been triggered? - ✔-Add Actions Which of the following is NOT a potential action when defining an alert? - ✔-Create Scan Policies Tickets can be automatically generated from an alert or manually created. - ✔-True