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A Deployment Professional is investigating why a rule has stopped triggering. The rule is configured to monitor certain events from a specific syslog based Log Source. Upon investigation, the Deployment Professional observes that no events are being received by that Log Source in the Log Activity Tab.
The customer has recently reconfigured the sending system but demonstrates that events are still being sent to the QRadar Event Processor. After running a tcpdump on the Event Processor, events are indeed observed coming from the IP address of the sending system.
How can the Deployment Professional find an event in the QRadar GUI to discover which Log Source the events are being processed?
A. Log Activity Tab -> Add Filter -> “Parameter Field” enter “Hostname” and enter a hostname
B. Network Activity Tab -> Advanced Search -> “Parameter Field” select “Hostname” and enter a hostname
C. Log Activity Tab -> Add Filter -> “Parameter Field” select “PayLoad Contains” and enter a unique identifier based off the tcpdump data
D. Network Activity Tab -> Add Filter -> “Parameter Field” select “Payload Contains” and enter a unique identifier based off the tcpdump data
The Network Activity tab allows you to investigate flows being sent to Qradar Network Anomaly Detection in real-time, perform powerful searches, and view network activity using configurable time-series charts. A flow is a communication session between two hosts. Viewing flow information allows you to determine how the traffic is communicated, what is communicated (if the content capture option is enabled), and who is communicating. Flow data also includes details such as protocols, ASN values, IFIndex values, and priorities.
What are the minimum bandwidth and latency parameters required for a high availability IBM Security QRadar SIEM V7.2.7 cluster to assure consistency of data if a company has disaster recovery in another city?
A. 1 Gpbs of bandwidth and less than 2 milliseconds of latency
B. 2 Gbps of bandwidth and less than 5 milliseconds of latency
C. 4 Gbps of bandwidth and less than 2 milliseconds of latency
D. 10 Gbps of bandwidth and less than 5 milliseconds of latency
A Deployment Professional working with IBM Security QRadar SIEM V7.2.7 is noticing system notifications relating to performance degradation of the CRE relating to expensive rules. Upon locating the rules that are being expensive they need to be modified to no longer trigger this notification.
What are three causes for a rule to become expensive? (Choose three.)
A. Containing payload matches tests
B. Rule consisting of a large scope
C. Containing payload contains tests
D. Rule consisting of a narrow scope
E. Utilizing non-standard regular expressions
F. Utilizing non-optimized regular expressions
A user can create a custom rule that has a large scope, uses a regex pattern that is not efficient, includes Payload contains tests, or combines the rule with regular expressions. When this custom rule is used, it negatively impacts performance, which can cause events to be incorrectly routed directly to storage. Events are indexed and normalized but they don’t trigger alerts or offenses.
A Deployment Professional is working with IBM Security QRadar SIEM V7.2.7. for a new customer that is trying to create their network hierarchy. The customer currently has more than the maximum of 1,000 network objects and CIDR ranges. A few of the CIDRs of the customer are:
Which supernet should be used to shrink the amount of network objects for the supplied group of CIDRs?
C. C. 220.127.116.11/23
D. D. 18.104.22.168/27
Supernetting, also called Classless Inter-Domain Routing (CIDR), is a way to aggregate multiple Internet addresses of the same class.
Using supernetting, the network address 22.214.171.124/24 and an adjacent address 126.96.36.199/24 can be merged into 188.8.131.52/23. The “23” at the end of the address says that the first 23 bits are the network part of the address, leaving the remaining nine bits for specific host addresses.
A Deployment Professional has detected a big spike in a customer’s “Malware infection detected” rule that monitors their endpoint anti-virus solution. The spike happened over the weekend, but when the rule was checked, it was not changed. Since Monday morning, the rule has spiked and has not yet stopped generating offenses.
What was added to the customer’s QRadar log sources that caused this problem?
B. Flow Collectors
C. Domain Controllers
D. Guest network in their offices.
Rules perform tests on events, flows, or offenses. If all the conditions of a test are met, the rule generates a response.
QRadar QFlow Collector passively collects traffic flows from your network through span ports or network taps. The IBM Security QRadar QFlow Collector also supports the collection of external flow-based data sources, such as NetFlow.
A customer has existing complex network infrastructure with many redundant links and the IP packets are taking different paths for inbound and outbound traffic. A Deployment Professional needs to configure SFlow.
What should be configured in IBM Security QRadar SIEM V7.2.7 to support this specific case?
A. Enable flow forwarding
B. Disable flow forwarding
C. Enable asymmetric flows
D. Disable symmetric flows
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