Cisco 200-201 Practice Test - Questions Answers, Page 31

In the NetFlow flow-record format, a dataflow set is a collection of data records that follow the template FlowSet in an export packet. Each data record corresponds to a flow and contains values for the fields defined in the template FlowSet. This allows for efficient organization and retrieval of flow information by NetFlow collectors.

Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

NetFlow Version 9 Flow-Record Format Documentation

The screenshot shows multiple POP requests with the commandPASS, which is typically used for password entry. The rapid succession and variation of these requests suggest an attempt to guess the password, characteristic of a brute-force attack. Remember, always verify with additional data or context when possible, as packet captures can contain vast amounts of information and may require thorough analysis for accurate interpretation.

Phishing is considered a low-bandwidth attack because it does not require the use of significant network resources.Instead, it relies on social engineering to deceive individuals into providing sensitive information or clicking on malicious links, often through email or other communication methods1.

The weaponization step in the Cyber Kill Chain model involves creating or repurposing malware based on the information gathered during reconnaissance to exploit vulnerabilities in the target's system.This step culminates in the preparation of the malware to be delivered to the victim2.

Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

Cyber Kill Chain

Digital certificates are essential for decrypting ingress and egress perimeter traffic, as they provide the necessary encryption keys for secure communications. By using digital certificates, network security devices can inspect the decrypted traffic to detect any malicious outbound communications that may indicate command-and-control activity.

A web proxy is the technology used to block a user's HTTP connection to a malicious site according to configured policy. It acts as an intermediary between users and the internet, enforcing security policies and preventing access to harmful sites by inspecting and managing web traffic.

The command in the exhibit is a Snort rule that is configured to alert on TCP packets with the SYN flag set, where the source is not the home network (!$HOME_NET) and the destination is within the home network ($HOME_NET) on port 80. This rule is designed to detect potential SYN flood attacks targeting the internal network's web server on port 80.