[2024] C1000-156 Answers C1000-156 Free Demo Are Based On The Real Exam
C1000-156 [Dec-2024 Newly Released] Exam Questions For You To Pass
IBM C1000-156 certification exam is a comprehensive assessment of an individual’s ability to administer and manage IBM Security QRadar SIEM V7.5. C1000-156 exam is designed to test the candidate's knowledge and skills in several areas, including event and flow processing, rules and building blocks, and network activity investigations.
IBM C1000-156 Exam, also known as the IBM Security QRadar SIEM V7.5 Administration Exam is designed for IT professionals who are responsible for installing, configuring, and managing IBM QRadar SIEM solutions. C1000-156 exam covers various topics such as QRadar SIEM architecture, data collection and event processing, risk management, and compliance reporting. C1000-156 exam is also intended for professionals seeking to become IBM QRadar SIEM certified experts.
NEW QUESTION # 31
What is the main reason for tuning a building block?
- A. Increasing the performance of the ecs-ec-ingress service
- B. Reducing EPS usage
- C. Reducing the number of false positives
- D. Properly documenting the building block for future administrators
Answer: C
Explanation:
Tuning a building block in IBM QRadar SIEM V7.5 is primarily aimed at reducing the number of false positives. This process involves adjusting the rules and logic within the building block to better differentiate between normal and suspicious activity. Here's the detailed explanation:
False Positives: High numbers of false positives can overwhelm analysts and obscure genuine threats. Tuning helps in refining detection criteria to reduce these false alarms.
Rule Adjustments: Modifying the thresholds, conditions, and filters within the building block rules to ensure they more accurately reflect the environment's typical behavior.
Improved Accuracy: Enhanced precision in detecting true security incidents, thus improving the overall effectiveness of the SIEM solution.
Reference
IBM QRadar SIEM administration guides and best practice documents emphasize the importance of tuning to minimize false positives, ensuring more actionable alerts.
NEW QUESTION # 32
Which authentication type in QRadar encrypts the username and password and forwards the username and password to the external server for authentication?
- A. TACACS authentication
- B. System authentication
- C. RADIUS authentication
- D. Two-factor authentication
Answer: A
Explanation:
TACACS (Terminal Access Controller Access-Control System) authentication is a protocol used in IBM QRadar SIEM V7.5 for authenticating users by forwarding their credentials to an external server. Here's how it works:
Encryption: TACACS encrypts the entire payload of the authentication packet, including the username and password, ensuring secure transmission.
Forwarding Credentials: After encryption, the credentials are forwarded to an external TACACS server, which performs the actual authentication.
Authentication Process: The external server checks the credentials against its database and sends a response back to QRadar indicating whether the authentication is successful or not.
Reference
IBM QRadar SIEM documentation explains TACACS authentication in detail, highlighting its secure encryption and external server verification process.
NEW QUESTION # 33
An administrator is reviewing the system notifications and discovers this error:
Insufficient disk space to complete data export request.
The Export Directory property in the System Settings has the default configuration.
Which disk partition does the administrator need to check?
- A. /var/log/exports
- B. /storetmp/exports
- C. /store/ariel/events/exports
- D. /store/exports
Answer: C
Explanation:
When the error "Insufficient disk space to complete data export request" is encountered, and the Export Directory property in the System Settings has the default configuration, the disk partition that needs to be checked is /store/ariel/events/exports. This directory is typically used for exporting event data in QRadar SIEM. The error indicates that the available disk space in this partition is insufficient to handle the export operation. Administrators should check the storage usage of this partition and manage the space by either cleaning up unnecessary files or expanding the storage capacity.
Reference
QRadar SIEM V7.5 Administration Guide - Chapter on System Notifications and Disk Management
NEW QUESTION # 34
What occurs when QRadar reaches the events per second (EPS) or flows per minute (FPM) shared license pool limits?
- A. QRadar generates a notification that the limit was reached and stops processing.
- B. Data accumulates in a temporary burst handing queue, but QRadar continues to process events and flows.
- C. Incremental Licensing removes the limits on EPS and FPM.
- D. Events and flows continue to process, and the Network and Log Activity tabs remain active.
Answer: B
Explanation:
When IBM QRadar SIEM V7.5 reaches the events per second (EPS) or flows per minute (FPM) shared license pool limits, the following occurs:
Burst Handling Queue: QRadar utilizes a temporary burst handling queue to manage the overflow of events and flows. This queue temporarily holds data until the system can process it.
Continued Processing: QRadar continues to process events and flows despite reaching the license limits, ensuring no data is lost.
Efficiency: This mechanism allows QRadar to handle short-term spikes in data volume without compromising the integrity or continuity of event and flow processing.
Reference
The handling of EPS and FPM limits is described in IBM QRadar SIEM's system administration and configuration guides, which explain how QRadar manages data when license thresholds are exceeded.
NEW QUESTION # 35
An administrator wants to export a list of events to a CSV file. Which items are in the default columns of the search result?
- A. Protocol. Storage Time, Destination Port, Source Port
- B. Username. Source Port. Event Count, Magnitude
- C. Event Name. Application, Username, Log Source
- D. Log Source. Event Count. High Level Category. Related Offense
Answer: D
Explanation:
When exporting a list of events to a CSV file in IBM QRadar SIEM V7.5, the default columns included in the search result typically are:
Log Source: The origin of the log data.
Event Count: The number of events.
High Level Category: The broad classification of the event.
Related Offense: The associated offense ID or description.
These columns provide a comprehensive overview of the events, helping analysts quickly understand the context and significance of the data.
Reference
IBM QRadar SIEM documentation provides details on the default columns included in search results and their significance in event analysis.
NEW QUESTION # 36
Which User Management option manages the QRadar functions that the user can access?
- A. User Role
- B. Admin Role
- C. Security Profile
- D. Security Options
Answer: C
Explanation:
In IBM QRadar SIEM V7.5, managing what functions a user can access is crucial for maintaining security and ensuring that users have appropriate permissions. The Security Profile option is used to manage these access controls. Here's how it works:
Security Profile: Defines the specific permissions and roles assigned to users, dictating what actions they can perform within QRadar. This includes access to various modules, dashboards, and functionalities.
User Role: While related, user roles are more about grouping users with similar permissions rather than defining individual access.
Admin Role: Typically reserved for users with administrative privileges but does not manage the specific functions users can access.
Security Options: This is not a relevant option for managing user access to QRadar functions.
Reference
IBM QRadar SIEM V7.5 documentation details how security profiles are configured and managed, providing comprehensive steps on assigning and modifying user access based on roles and profiles.
NEW QUESTION # 37
Which is a valid statement about the process of restoring a backup archive?
- A. A restoration might fail if you restore the configuration backup before the data backup.
- B. A backup archive can only be restored for the same software version, including fix pack versions.
- C. When restoring all configuration items included in the backup archive, only configuration information, offense data, and asset data are restored.
- D. A configuration restore must be performed on a console where the IP address matches the IP address of a managed host in the backup.
Answer: B
Explanation:
When restoring a backup archive in QRadar, it is essential to ensure that the software version matches exactly. This includes both the base version and any fix pack versions.
Attempting to restore a backup archive from a different software version can lead to compatibility issues, data corruption, and system instability.
Always verify that the backup archive corresponds to the same QRadar version before initiating the restoration process.
Reference:
IBM QRadar SIEM V7.5 Administration documentation.
NEW QUESTION # 38
On which managed hosts is QRadar event data stored in the Ariel database?
- A. On the Event Processor and attached Data Node
- B. On the App Host and attached Data Node
- C. On the Event Collector and attached Data Node
- D. On the Data Gateway and attached Data Node
Answer: A
Explanation:
QRadar event data is stored in the Ariel database on the Event Processor and any attached Data Nodes. The Event Processor is responsible for processing incoming events, performing correlation, and storing the event data. The attached Data Nodes provide additional storage capacity and can be used to extend the storage available to the Event Processor.
Reference
IBM QRadar SIEM V7.5 Administration documentation.
NEW QUESTION # 39
Before configuring a WinCollect log source, which two ports does a QRadar administrator ensure are open?
- A. 445 and 8413
- B. 443 and 8413
- C. 8080 and 8413
- D. 514 and 8413
Answer: D
Explanation:
Before configuring a WinCollect log source in QRadar, the administrator must ensure that specific network ports are open to facilitate communication. The required ports are:
Port 514: This is the default port for syslog, a standard protocol used to send system log or event messages to a specific server. WinCollect uses this port to send logs from Windows machines to the QRadar server.
Port 8413: This port is used for communication between the WinCollect agent and the QRadar Console. It is necessary for managing the WinCollect agent and ensuring proper data transmission.
Ensuring these ports are open is crucial for the seamless operation and integration of WinCollect with QRadar, allowing the secure and efficient collection of log data from Windows environments.
Reference
IBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf
NEW QUESTION # 40
Domain assignments lake precedence over the settings of which other elements from a security profile?
- A. Security profiles. Networks, and Domains
- B. Permission Precedence, and Log Sources tabs
- C. Security profiles, Networks, and Log Sources tabs
- D. Permission Precedence. Networks, and Log Sources tabs
Answer: D
Explanation:
In IBM QRadar SIEM, domain assignments take precedence over the settings of other elements from a security profile, specifically Permission Precedence, Networks, and Log Sources tabs. This hierarchical precedence ensures that the domain settings are enforced across different security configurations. The domain settings effectively override other configurations to maintain consistency and security across the environment. This structure helps in managing access and permissions more effectively by ensuring that the domain-level policies are the primary controlling factor.
Reference
QRadar SIEM V7.5 Administration Guide - Chapter on Domain Management and Security Profiles
NEW QUESTION # 41
Which two (2) data sources can be assigned to a domain in the Domain Management function?
- A. Log sources
- B. Flow collectors
- C. X-Force Integration Feed
- D. Rules
- E. Users
Answer: A,B
Explanation:
In the Domain Management function of IBM QRadar SIEM, two key data sources that can be assigned to a domain are Flow Collectors and Log Sources. Flow collectors capture and analyze network flow data, while log sources refer to various devices and applications that send log data to QRadar for analysis. By assigning these data sources to a domain, administrators can segment and manage the data more effectively, ensuring that the correct flow and log data are processed and analyzed within the designated domain. This segmentation enhances security and performance by isolating data handling according to domain-specific policies.
Reference
QRadar SIEM V7.5 Administration Guide - Chapter on Domain Management and Data Source Assignment
NEW QUESTION # 42
In the QRadar GUI. you notice that no new offenses were generated today. A review of the notifications shows:
MPC: Unable to create new offense. The maximum number of active offenses has been reached.
What is the default value of the maximum number?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
In IBM QRadar SIEM V7.5, the default value for the maximum number of active offenses is set to 2500. This limit is in place to manage system performance and ensure efficient processing of security incidents. Here's the detailed information:
Default Setting: The default setting for the maximum number of active offenses is 2500.
Impact: If this limit is reached, QRadar will not generate new offenses until some of the existing offenses are closed or archived.
Configuration: Administrators can adjust this setting based on their organizational needs, but the default value is 2500.
Reference
This information is detailed in the QRadar SIEM configuration and tuning guides, which specify default settings and provide instructions for modifying the maximum number of active offenses if necessary.
NEW QUESTION # 43
Which two (2) open standards does the QRadar Threat Intelligence app use for feeds?
- A. OSINT
- B. JSON
- C. STIX
- D. TAXII
- E. AQL
Answer: C,D
Explanation:
The QRadar Threat Intelligence app uses open standards to integrate and utilize threat intelligence feeds effectively. The two key standards used are:
TAXII (Trusted Automated eXchange of Indicator Information): This is an application layer protocol used for exchanging cyber threat intelligence over HTTPS. It enables the sharing of threat information across different systems and organizations.
STIX (Structured Threat Information eXpression): This is a standardized language used for representing structured cyber threat information. STIX enables the consistent and machine-readable representation of threat data, facilitating the integration and analysis of threat intelligence.
These standards ensure that threat intelligence data is formatted and exchanged in a consistent and interoperable manner, enhancing the overall effectiveness of the threat intelligence processes in QRadar.
Reference
The IBM QRadar SIEM documentation and threat intelligence app configuration guides describe the use of TAXII and STIX for integrating threat intelligence feeds.
NEW QUESTION # 44
A ORadar administrator is trying to tune a rule so that it cannot send an email more than 10 times in a 24-hour period. Which method can be used to accomplish this goal?
- A. Tuning the rule conditions to make it trigger fewer times
- B. Using the "execute custom action" rule response
- C. Using the "response limiter"
- D. Using a special rule test that limits the number of rule triggers
Answer: C
Explanation:
To ensure that a rule in IBM QRadar SIEM V7.5 does not send an email more than 10 times in a 24-hour period, the "response limiter" can be used. Here's how it works:
Response Limiter: This feature limits the number of times a rule action (such as sending an email) can be executed within a specified timeframe.
Configuration: Set the response limiter to a maximum of 10 actions in 24 hours.
Implementation: Apply the response limiter to the rule, ensuring that even if the rule conditions are met multiple times, the email will only be sent up to the specified limit.
Reference
IBM QRadar SIEM documentation on rule management and tuning includes detailed instructions on using the response limiter to control the frequency of rule actions.
NEW QUESTION # 45
Before configuring a WinCollect log source, which two ports does a QRadar administrator ensure are open?
- A. 445 and 8413
- B. 443 and 8413
- C. 8080 and 8413
- D. 514 and 8413
Answer: D
NEW QUESTION # 46
How many vulnerability processors can you have in your deployment?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
In QRadar SIEM V7.5, the number of vulnerability processors is limited to 1.
These vulnerability processors are responsible for handling and processing vulnerability data within the system.
Having multiple vulnerability processors is not supported in this version of QRadar.
Reference:
IBM QRadar SIEM V7.5 Administration documentation.
NEW QUESTION # 47
An administrator would like to optimize event and flow payload searches for log data that is stored for up to a month. What does an administrator need to do to achieve that requirement?
- A. Configure the retention period for property indexes.
- B. Configure the retention period for payload indexes.
- C. Perform a clean on the search model.
- D. Configure the retention period for search indexes.
Answer: B
Explanation:
To optimize event and flow payload searches for log data stored for up to a month, an administrator should configure the retention period for payload indexes. Here's the process:
Retention Period Configuration: Set the retention period for payload indexes to match the desired data storage duration (e.g., one month).
Improved Search Efficiency: By configuring the retention period appropriately, QRadar ensures that the indexed data is efficiently searchable, improving performance during searches.
Index Management: Regularly manage and clean up indexes to maintain optimal system performance and storage utilization.
Reference
The IBM QRadar SIEM administration guides provide instructions on configuring retention periods for various types of indexes, including payload indexes, to optimize search performance.
NEW QUESTION # 48
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