ServiceNow CIS-Discovery Certified Implementation Specialist - Discovery Exam Practice Test

The Discovery Dashboard provides a summary of the Discovery status, including the number of active discovery errors, the number of devices discovered, and the number of credentials used. Each error has a help link that provides more information about the cause and possible solutions.

In the context of ServiceNow Discovery patterns, the types of temporary variables include Scalar/List and Tabular/Table. Scalar/List variables are used to store single values or lists of values, while Tabular/Table variables are used to store structured data in a table format. Command and SQL statement are not types of temporary variables; rather, they are types of operations or steps that can be used within a pattern to execute commands or SQL queries.References= ServiceNow Discovery documentation, especially sections related to Discovery Patterns and the use of temporary variables within patterns.

An extension section of a discovery pattern is a section that allows you to modify or extend the functionality of an existing pattern without customizing it. An extension section can contain shared libraries, which are reusable code snippets that can be invoked from any pattern or extension section. Shared libraries can be used to define common functions, variables, or constants that are used across multiple patterns or extension sections. Shared libraries can also be used to override the default behavior of some built-in functions, such as identification or classification12. References = 1: ITOM: Extending Discovery/Service Mapping Patterns - GlideFast ServiceNow 2: How to Create Discovery Pattern Extensions and Why to Use Them

The Pattern Designer in ServiceNow Discovery uses different types of horizontal patterns to model various IT components and services. The temporary variable 'computer_system' seen in the pattern indicates that this is a 'Computer System' pattern type. This type of pattern is used to model and discover details about computer systems, which typically include hardware, operating system, and other related components.

 Based on the web search results from the search_web tool, the following choices best represent key capabilities of a ServiceNow ITOM Enterprise solution:

Manage Hybrid Clouds: ServiceNow ITOM enables organizations to gain visibility into their IT environment, on-premises to cloud, and see the impact of their applications on business services12. It also helps to plan, track, and secure cloud implementation through best-practice governance1. Four apps comprise Cloud Accelerate to help prepare for cloud migration, streamline provisioning requests, and manage cloud resources1.

Proactively Eliminate Service Outages: ServiceNow ITOM helps to predict issues, reduce user impact, and automate resolutions with predictive AIOps and automation13. It analyzes telemetry and log data using AI to reduce noise, expeditemapping and predict issues1. It also delivers proactive digital operations with real-time log data to solve problems quickly1.

The other choices are not specific to ServiceNow ITOM Enterprise solution, but rather general features of the ServiceNow platform. The ServiceNow platform allows users to create an engaging user experience with intuitive interfaces and workflows. It also enables users to build new apps fast with low-code development tools and pre-built components.

 The functionality shown in the image is related to the Tracked Configuration files feature of ServiceNow Discovery. This feature allows Discovery to track changes in configuration files on Windows and Unix hosts and store them as configuration items (CIs) in the CMDB1. To modify this functionality, such as adding or removing files to track, changing the file attributes to capture, or defining the CI relationships, one needs to edit the Discovery Pattern that is associated with the Tracked Configuration files classifier2. A Discovery Patternis a series of operations that tell Discovery how to find and identify an application or a configuration file on a host3.

 A scheduled job is a background process that runs at a specified time or interval to perform a specific task1. It is not a method for deleting specific CIs that are not discovered in 30 days. The other options are methods for deleting or updating CIs based on discovery data. A UI policy is a script that can dynamically change the behavior of a form or list2. A service mapping is a process that creates a map of the relationships between CIs that support a business service3. A data policy is a rule that enforces data consistency and accuracy by validating the data entered into a record.

 When Discovery or Service Mapping identifies a CI that matches an existing CI in the CMDB, it checks whether the CIs are duplicates or not. If they are duplicates, Discovery adds them to a de-duplication task, which is a record that groups duplicate CIs and allows you to review and remediate them. You can use the Duplicate CI Remediator wizard to merge, flag, retire, or delete the duplicate CIs. By default, Discovery does not send notifications, create identification rules, or stop the next discovery for duplicate CIs.

In ServiceNow Discovery, when encountering the error 'Active, couldn't classify' during the discovery of a new SNMP network device, it typically indicates an issue with the classification process. Classification is a crucial initial step in the Discovery process, where the system determines the type of device it is interacting with. If an SNMP Classification rule for the new device type does not exist or needs updating, Discovery will be unable to classify and thus properly discover the device. Incorrect SNMP credentials or firewall issues usually result in different types of errors, such as authentication failures or no response from the device.

The Extension section in a horizontal pattern is executed after the Identification sections have completed and the CI has been identified. The Extension section allows adding additional attributes or relationships to the CI, or launching other patterns for further discovery12.

Discovery and Service Mapping are both products that help to identify and map the IT infrastructure and services in an organization. However, they have different approaches and objectives. Discovery uses IP address ranges as the starting point for finding devices and applications on the network, and then runs probes and sensors to collect information and classify them. Discovery focuses on inventory-related use-cases, such as asset management, configuration management, and compliance. Service Mapping uses entry points, such as URLs or host names, as the starting point for mapping business services and their dependencies. Service Mapping runs patterns, which are sequences of operations that follow the traffic connections between devices and applications, and then creates a service map that shows the logical and semantic relationships. Service Mapping focuses on service-related use-cases, such as service availability, impact analysis, and root cause analysis12.

ServiceNow Discovery can be extended in three main ways: Classifiers, Probes & Sensors, and Discovery Patterns. Classifiers are used to identify the type of device or application that is being discovered, based on the information returned by a probe. Probes are commands or scripts that are executed on the target device or application to collect data. Sensors are scripts that process the data collected by probes and create or update configuration items (CIs) in the CMDB. Discovery Patterns are graphical representations of the discovery process that can be customized or created to discover specific types of devices or applications, using classifiers, probes, and sensors as building blocks.

The CMDB contains records of configuration items (CIs) and their relationships. A CI is any component that needs to be managed in order to deliver an IT service, such as a server, an application, or a user. A relation type defines the nature of the connection between two CIs, such as depends on, uses, or contains. A model is a template for a CI that defines its attributes and default values. An asset is a tangible or intangible resource that is tracked and managed by the organization, such as a laptop, a license, or a contract.

Step 25 uses a shared library called Windows - Storage, which is a reusable component that can be invoked by multiple patterns to discover the storage information of Windows servers. A shared library is a collection of steps that can be referenced by a pattern name and can accept input parameters and return output values. Shared libraries help to avoid duplication of code and simplify the maintenance of patterns.

 To allow a MID Server to access servers using WinRM, the following configurations are required:

MID Servers need to be added to the WinRM Group policy on the Servers: This enables the servers to accept WinRM connections from the MID Servers and grant them the necessary permissions to execute commands and scripts1.

MID Server Parameters Add WinRM: This enables the MID Server to use WinRM as a protocol for Discovery and Orchestration and specify the WinRM port, authentication method, and encryption settings2.

A horizontal discovery pattern is a set of steps that execute operations to identify, classify, and populate attributes for configuration items (CIs) of a specific category or class, such as infrastructure or application. A horizontal pattern can be applied to any operating system or platform that supports the required protocols and commands12.

In the ServiceNow Discovery module, under the Recommended Actions pane for an Automated Error Messages list within Discovery > Home, the possible options under ACTION ON ALL include "View instructions" and "Retry Discovery". "View instructions" allows users to see guidance on how to address the errors, while "Retry Discovery" enables users to reinitiate the discovery process for the affected devices. "Make Ranges" and "Ping IP Addresses" are not standard options in this context.References= ServiceNow Discovery documentation and user guides, particularly those discussing the management of automated error messages and recommended actions in Discovery.

London Linux Servers is a CMDB Group with Health Group type. A CMDB Group is a collection of configuration items (CIs) that share common characteristics or are related in some way1. A Health Group is a type of CMDB Group that is used to monitor and measure the health of a specific set of CIs based on predefined rules and metrics2. The image shows that London Linux Servers is selected from the CMDB Health Group List, which is a dropdown menu that displays all the Health Groups defined in the system3. The image also shows the Group Health tab, which displays the health scores and indicators for the selected Health Group.

From the Discovery Status record, a Device record in ServiceNow Discovery contains a link to the discovered Configuration Item (CI). This link provides direct access to the CI record that was discovered and processed during the discovery cycle. The Device record does not contain the contents of the CI, a link to the discovered Asset, or a link to the CMDB Health Dashboard.References= ServiceNow Discovery documentation, focusing on the details of Discovery Status records and the information contained within Device records.

For a pattern operation, the <_> placeholder can be replaced by any valid index or wildcard character that can be used to access an element of an array or a table. The $IfTable variable is a table that contains information about the network interfaces of a device1. The InstanceID attribute is a unique identifier for each interface2. To access the InstanceID of a specific interface, the pattern operation can use the following syntax:

$IfTable[].InstanceID

where is either:

A numeric index that corresponds to the position of the interface in the table, such as 3 for the third interface.

A dot (.) followed by a key-value pair that matches a specific attribute and value of the interface, such as [.Name=eth0] for the interface with the name eth0.

An asterisk () that represents a wildcard that matches any interface in the table, such as [] for all interfaces.

Credential affinity is an association between a set of credentials and a device on your network. When Discovery or Orchestration first attempts to access a device, they try all available credentials until a valid one is found. Once a valid credential is found, it is recorded in the dscy_credentials_affinity table, and further discovery processes rely on this information. If the credentials are modified or changed, the process will be repeated until a valid credential is found and updated in the same table. Credential affinity allows Discovery to use the most efficient and successful credential for each device, and avoid unnecessary credential failures.

Variables are used in discovery patterns to store and manipulate data that is collected or calculated during the discovery process. There are three kinds of variables used in discovery patterns12:

CI attributes: These are variables that correspond to the attributes of the configuration item (CI) type that the pattern is discovering. For example, name, serial_number, manufacturer, etc. CI attributes are used to populate the CI record in the CMDB with the information gathered by the pattern.

Temporary: These are variables that are created and used within the pattern, but are not stored in the CMDB. For example, $result, $output, $user_var, etc. Temporary variables are used to store and manipulate data such as the output of a command, the value of a parameter, or the result of a calculation.

Global: These are variables that are defined in the global scope and can be accessed by any pattern. For example, $mid, $target, $ip_address, etc. Global variables are used to store and access data that is common to all patterns, such as the MID Server, the target device, or the IP address.

 Discovery can provide information about the relationships between configuration items (CIs), including applications and hosts. Application relationships are the connections between applications that run on different hosts or servers, such as web servers, databases, load balancers, etc. Host relationships are the connections between applications and the hosts or servers that they run on, such as Windows, Linux, Unix, etc. Discovery can identify these relationships using various methods, such as probes, sensors, patterns, file-based discovery, etc. Discovery can also create and update these relationships in the CMDB, using the Depends on::Used by or Runs on::Runs relationship types.

The Automation Error Messages list displays the errors that occurred during the execution of Discovery automation scripts. From this list, you can view the details of each error, such as the script name, the error message, the device, and the time. You can also perform actions on the errors, such as retrying the script, ignoring the error, or creating an incident. To do so, you can use the options on the right navigation pane, which are categorized as follows1:

SELECT ALL: This option allows you to select all the errors in the list.

SELECT ONE: This option allows you to select one error in the list by clicking on the checkbox next to it.

ACTION ON SELECTED: This option allows you to perform an action on the selected errors, such as Retry, Ignore, or Create Incident. You can also choose to perform the action on all the errors in the list by selecting the All option from the drop-down menu.

ACTION ON ALL: This option allows you to perform an action on all the errors in the list, regardless of the selection. You can choose from the same actions as the ACTION ON SELECTED option.

Tracked configuration files are files that contain settings and parameters of certain applications or devices that Discovery can find and add to the CMDB. Some of the benefits of tracked configuration files are:

Content version comparison: You can compare the content of different versions of the same configuration file and see the changes that occurred over time. This can help you troubleshoot issues, audit changes, and restore previous configurations if needed.

Files tracked as CIs: You can view the configuration files as configuration items (CIs) in the CMDB and see their relationships with other CIs, such as the applications or devices they belong to. This can help you understand the dependencies and impact of the configuration files on your IT environment.

Global variables are variables that are automatically available for all steps in horizontal discovery patterns. They store information about the target CI, such as its IP address, host name, operating system, and credentials. There are two global variables that may be used for steps in horizontal discovery patterns: system and computer_system. The system variable contains the information about the target CI’s IP address, host name, and credentials. The computer_system variable contains the information about the target CI’s operating system, such as its name, version, and architecture12.

Horizontal discovery patterns are a series of operations that tell Discovery which CIs to find on your network, what credentials to use, and what tables to populate in the CMDB. Horizontal discovery patterns use variables to store and pass information between the operations. By default, there are two variables that are automatically available for horizontal discovery patterns: infrastructure_system and computer_system. These variables store the information about the infrastructure and the computer system of the target CI, respectively. They are populated by the Horizontal Pattern probe and sensor, which enable Discovery to use patterns for horizontal discovery123.

The Put file operation allows the transfer of a file from the MID Server to a target1. This operation can be used to copy files from the MID Server to a target device, such as configuration files, scripts, or binaries2. The Put file operation requires the file path on the MID Server and the file path on the target as inputs2.

Horizontal pattern types are used to discover the configuration items (CIs) that belong to a specific category or class, such as infrastructure or application. They define the operations that Discovery performs to identify and classify the CIs, and the attributes that Discovery populates for each CI. Horizontal patterns can be applied to any operating system or platform that supports the required protocols and commands12.

 The WMI service is a Windows service that enables remote management of Windows devices using the WMI protocol. The WMI service is required for Discovery to access the configuration and status information of Windows devices using WMI queries. If the WMI service is not running on a host, it will prevent the discovery of Windows devices, as Discovery will not be able to communicate with the WMI Collector or execute WMI queries on the target device123.

A horizontal discovery pattern is a series of operations that tell Discovery how to find and identify an application on a host1. To extract the build and version numbers from the config file, the pattern can use either of the following methods:

Parse File operation with Delimited Text parsing strategy: This operation reads the content of a file and splits it into fields based on a delimiter character. The pattern can specify the delimiter as a space and the fields to extract as the second and fourth ones from the first line of the file2.

Parse File operation with Regular Expression parsing strategy: This operation reads the content of a file and matches it against a regular expression. The pattern can specify the regular expression as app build (\d+\.\d+\.\d+\.\d+) version (\d+\.\d+) and the groups to extract as the first and second ones from the first line of the file2.

For discovering Windows Servers, ServiceNow Discovery recommends using credentials that have a domain user account with local administrator access on the target servers. This level of access ensures that Discovery can successfully execute the necessary probes and sensors to collect comprehensive data about the server without being restricted by permission limitations. The other options either provide excessive permissions (like a domain administrator with sudo access) or insufficient privileges (like a standard domain user with read access).

The Duplicate CI Remediator is a feature of ServiceNow Discovery that helps to identify and merge duplicate CIs in the CMDB. It uses predefined rules and criteria to compare CIs across different data sources and determine if they are duplicates. It also provides a user interface to review and approve the suggested merges, or to manually merge CIs as needed. The Duplicate CI Remediator helps to improve the accuracy and quality of the CMDB data and reduce the maintenance efforts.

 CI reclassification is the process of changing the class of a CI in the CMDB based on the discovery data. It can be done manually or automatically, depending on the configuration settings. CI reclassification can result in data loss if the new class has fewer or different attributes than the original class, and the existing attribute values are not preserved or mapped to the new class. This can happen when a CI is switched to a different class hierarchy, such as from a Linux Server to a Windows Server, or when a CI is downgraded to a less specific class, such as from a Database to a Software Instance. Therefore, switching and downgrading have a higher chance of leading to lost data during CI reclassification.

The Discovery Dashboard provides a summary of the Discovery status, including the number of active discovery errors, the number of devices discovered, and the number of credentials used. Each error has a help link that provides more information about the cause and possible solutions.

 The WMI service is a Windows service that enables remote management of Windows devices using the WMI protocol. The WMI service is required for Discovery to access the configuration and status information of Windows devices using WMI queries. If the WMI service is not running on a host, it will prevent the discovery of Windows devices, as Discovery will not be able to communicate with the WMI Collector or execute WMI queries on the target device123.

The Credential Affinity table is a table that associates an IP address and a credential in Discovery1. It is used to store the credential that was successfully used to access a device during Discovery2. It can also be used to manually assign a credential to an IP address or a range of IP addresses3. The other options are not tables that associate an IP address and a credential in Discovery. The Service Affinity table is a table that associates a business service and a credential. The Service CI Association table is a table that associates a business service and a configuration item (CI). The Tags table is a table that stores tags that can be applied to records in any table.

Based on the image, the value assigned to the label “Value” is a concatenation of variables and strings. One of the variables is $name_details[1].exec_info, which indicates that $name_details is a tabular variable, meaning an array or a map that can store multiple values1. The [1] is the index or the key that accesses the element of the tabular variable. The .exec_info is the attribute or the property of the element. Therefore, the choice D is true.

The other choices are not true based on the image. The choice A is false because the image does not show any WMI query operation step. A WMI query operation step is a pattern step that executes a WMI query on a Windows device and returns the results as a tabular variable2. The image does not show any WMI query syntax or result. The choice B is false because there is no scalar variable labeled ‘1’. A scalar variable is a variable that can store only one value1. The image shows a label “Value” but not a variable name. The choice C is false because the value can be used in a pattern step. A pattern step is a unit of logic that performs a specific action during Discovery or Service Mapping3. The value can be used as an input or an output of a pattern step, depending on the context.

Discovery uses the ping method to determine if a host IP is active or alive. Ping is a network utility that sends an ICMP echo request packet to a target IP address and waits for an ICMP echo reply packet. If the target IP address responds, it means that the host is active or alive12.

 Discovery can provide information about the relationships between configuration items (CIs), including applications and hosts. Application relationships are the connections between applications that run on different hosts or servers, such as web servers, databases, load balancers, etc. Host relationships are the connections between applications and the hosts or servers that they run on, such as Windows, Linux, Unix, etc. Discovery can identify these relationships using various methods, such as probes, sensors, patterns, file-based discovery, etc. Discovery can also create and update these relationships in the CMDB, using the Depends on::Used by or Runs on::Runs relationship types.

SNMP credentials are used by Discovery to communicate with devices that support the Simple Network Management Protocol (SNMP). SNMP credentials do not include a user name, just a password, called the community string. The default read-only community string for many SNMP devices is public, and Discovery will try that automatically. Enter the appropriate SNMP credentials if they differ from the public community string1.

The Shazzam Batch Size property determines how many IP addresses are scanned by a single Shazzam probe1. If this value is set to 1000 and a discovery must scan 10,000 IP addresses using a single MID Server, it creates 10 Shazzam probes with each probe scanning 1000 IP addresses. This property can be configured in the Discovery Properties module under Discovery Definition2.

In a discovery pattern, CI Attributes are the fields that store the information about the configuration items (CIs) that are discovered by the pattern. The Pattern Designer is a graphical interface that allows users to create and edit patterns using drag-and-drop operations. In the Pattern Designer, there are two types of CI Attributes that are available: Main pattern CI type and Related CI types. The Main pattern CI type is the CI type that the pattern is designed to discover, such as Windows Server, Linux Server, or Database. The Related CI types are the CI types that are related to the main CI type, such as IP Address, Network Adapter, or Software Installation. Users can select the CI Attributes from these types to populate the CMDB tables with the data collected by the pattern123.

 The Service Account for the MID Server must have the Log on as service right on the Windows platform. This right allows the MID Server to run as a Windows service and communicate with the ServiceNow instance. The Service Account does not need to have local or domain admin rights, as these are not required for the MID Server functionality. The MID Server User Role is a role on the ServiceNow instance, not on the Windows platform, and it is used to control the access and permissions of the MID Server on the instance.

Step 25 uses a shared library called Windows - Storage, which is a reusable component that can be invoked by multiple patterns to discover the storage information of Windows servers. A shared library is a collection of steps that can be referenced by a pattern name and can accept input parameters and return output values. Shared libraries help to avoid duplication of code and simplify the maintenance of patterns.

The ECC Queue tab displays the input and output messages from and to MID Servers. The default fields that are displayed on this tab are:

Topic: The topic of the message, such as Discovery, Orchestration, or MID Server.

Queue: The queue name of the message, such as input, output, or error.

Source: The source of the message, such as the MID Server name, the instance name, or the probe name.

State: The state of the message, such as ready, processed, or ignored.

Created: The date and time when the message was created.

Updated: The date and time when the message was last updated.

Some other fields that can be added to the ECC Queue tab are:

Details: The details of the message, such as the payload, the response, or the error message.

Pattern log link: The link to the pattern log file, if the message is related to a pattern execution.

CMDB CI: The configuration item that is associated with the message, if any.

Discovery schedule name: The name of the discovery schedule that triggered the message, if any.

In ServiceNow Discovery, the reconciliation process is governed by precedence rules. These rules determine which data source’s information will be retained if there are conflicts when multiple sources discover the same CI. In this case, Altiris has a higher order of precedence (300) compared to ServiceNow (100), as seen in the “Data Source Precedents” section of the image. Therefore, if Altiris discovers ‘Windows2’ for the name attribute on the same CI after ServiceNow sets it to ‘Windows1’, the name will change to ‘Windows2’ due to Altiris’s higher precedence.

 The MID Server’s user account must have the mid_server role to interact with a ServiceNow instance. This role allows the MID Server to access protected tables and perform discovery and orchestration tasks on behalf of the instance. The other roles are not related to the MID Server functionality. The discovery_admin role is for configuring and managing discovery, the sm_mid role is for using the Service Mapping MID Server, and the mid_discovery role is for running discovery probes and sensors.

The Pattern Designer in ServiceNow Discovery uses different types of horizontal patterns to model various IT components and services. The temporary variable 'computer_system' seen in the pattern indicates that this is a 'Computer System' pattern type. This type of pattern is used to model and discover details about computer systems, which typically include hardware, operating system, and other related components.

A Functionality Definition is a configuration record that defines what protocols to detect from within a Behavior. A Behavior is a set of Functionality Definitions that Discovery uses to identify and explore a device or application. A Functionality Definition specifies the order, type, and parameters of the probes that Discovery launches to gather information about a device or application12.

The Put file operation allows the transfer of a file from the MID Server to a target1. This operation can be used to copy files from the MID Server to a target device, such as configuration files, scripts, or binaries2. The Put file operation requires the file path on the MID Server and the file path on the target as inputs2.

In a Merge Table pattern operation within ServiceNow Discovery, the editable fields typically include the Target Table, Second Table, and First Table. These fields are configurable and allow users to specify the tables involved in the merge operation. The Target Table is where the merged data will be stored, while the First and Second Tables are the source tables whose data is being merged. The Primary Table is not typically an editable field in this context.References= ServiceNow Discovery documentation, particularly the sections discussing pattern design and operations, including Merge Table operations within Discovery Patterns.

The MID Server parameters like 'mid.ssh.session_timeout', 'url', and 'mid.windows.management_protocol' can be modified through the ServiceNow platform UI under the MID Server configuration settings. These parameters control various aspects of the MID Server's operation, such as timeout settings for SSH sessions, the URL for the MID Server to communicate with the ServiceNow instance, and the management protocol to use for Windows servers, respectively. The 'name' of the MID Server, however, is not typically a parameter that can be changed through the UI as it is a unique identifier for the MID Server within the ServiceNow instance. Once a MID Server is registered with a name, that name is usually persistent and not intended to be modified through configuration settings.

 To allow a MID Server to access servers using WinRM, the following configurations are required:

MID Servers need to be added to the WinRM Group policy on the Servers: This enables the servers to accept WinRM connections from the MID Servers and grant them the necessary permissions to execute commands and scripts1.

MID Server Parameters Add WinRM: This enables the MID Server to use WinRM as a protocol for Discovery and Orchestration and specify the WinRM port, authentication method, and encryption settings2.

To launch any pattern, you need to specify the CI classification and the CI type. The CI classification determines the table where the discovered CI is stored in the CMDB, and the CI type defines the specific attributes and relationships of the CI. For example, if you want to discover a Windows server, you need to select the CI classification as cmdb_ci_win_server and the CI type as Windows Server. These choices are mandatory for any pattern, as they enable Discovery to identify and classify the CIs correctly.

The mid.discovery.max_pattern_payload_size property defines the maximum overall size for the returned payload that comes from patterns. This property is set on the MID Server and applies to all patterns that run on that MID Server. If the payload size exceeds this limit, the pattern execution fails and an error message is logged in the ECC queue. The default value of this property is 10 MB1.

In the ServiceNow Discovery module, under the Recommended Actions pane for an Automated Error Messages list within Discovery > Home, the possible options under ACTION ON ALL include "View instructions" and "Retry Discovery". "View instructions" allows users to see guidance on how to address the errors, while "Retry Discovery" enables users to reinitiate the discovery process for the affected devices. "Make Ranges" and "Ping IP Addresses" are not standard options in this context.References= ServiceNow Discovery documentation and user guides, particularly those discussing the management of automated error messages and recommended actions in Discovery.

Pattern operations are the building blocks of patterns that define the logic and actions to perform on the target CIs. Some pattern operations query targets to retrieve information or execute commands, while others manipulate data or perform other tasks. WMI Query and Get Process are examples of pattern operations that query targets. WMI Query executes a Windows Management Instrumentation (WMI) query on a Windows target and stores the results in a variable. Get Process executes a command to list the processes running on a target and stores the results in a variable12.

In the context of ServiceNow Discovery patterns, the types of temporary variables include Scalar/List and Tabular/Table. Scalar/List variables are used to store single values or lists of values, while Tabular/Table variables are used to store structured data in a table format. Command and SQL statement are not types of temporary variables; rather, they are types of operations or steps that can be used within a pattern to execute commands or SQL queries.References= ServiceNow Discovery documentation, especially sections related to Discovery Patterns and the use of temporary variables within patterns.

Discovery Range Sets in ServiceNow Discovery offer a flexible way to manage and identify networks. They simplify the administration of network discovery by allowing administrators to define groups of IP ranges. This organization helps in effectively managing and targeting different network segments without needing to define each IP range in individual Discovery Schedules. Range Sets do not necessarily show the number of IPs in a subnet, nor are they the only way to define multiple IP ranges in a schedule.

When increasing the maximum number of threads for a MID Server in ServiceNow Discovery, it's often necessary to also increase the memory allocated to the MID Server application. This is because more threads can result in higher memory usage as each thread may consume resources while performing discovery tasks. Increasing disk space, updating ACL rules for CMDB tables, or increasing the MID Server max payload size are not directly related to the number of threads used by a MID Server.References= ServiceNow Discovery documentation, especially sections discussing MID Server configuration and performance tuning.