Free Practice Questions for CertNexus CFR-410 Exam

Traditional SIEM (Security Information and Event Management) systems are designed to provide aggregation, normalization, correlation, and alerting of log and event data from various sources within an organization's network. These functions help identify potential security incidents, providing security teams with the necessary information to investigate and respond to threats effectively.

SNMP (Simple Network Management Protocol) is typically used for network management and monitoring but can be a security risk if not properly secured. SNMP can provide attackers with valuable information about network devices if exposed to the internet, which is why it is generally blocked through firewalls unless absolutely necessary and securely configured.

Multi-factor authentication (MFA) is a front-end security capability that enhances cyber resiliency by requiring users to provide multiple forms of verification before gaining access to systems or applications. This helps protect against unauthorized access, which is a key component of maintaining resilience in the face of cyber threats.

A procedure is a set of detailed, step-by-step instructions that guide users through specific tasks. In this case, the system administrator is creating instructions for patching managed assets, which qualifies as a procedure. It outlines the exact steps to be followed to accomplish a particular task.

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Explanation

The host that owns the IP address sends an ARP reply message with its physical address. Each host machine maintains a table, called ARP cache, used to convert MAC addresses to IP addresses. Since ARP is a stateless protocol, every time a host gets an ARP reply from another host, even though it has not sent an ARP request for that reply, it accepts that ARP entry and updates its ARP cache. The process of updating a target host’s ARP cache with a forged entry is referred to as poisoning.

Bro (now known as Zeek): This is an open-source network monitoring tool that can be used as an IDS to analyze traffic and detect suspicious activity.

Snort: Snort is a widely used open-source IDS that can detect and prevent network intrusions by analyzing network traffic.

Suricata: Suricata is an open-source IDS/IPS (Intrusion Prevention System) that provides high-performance intrusion detection and network security monitoring.