Free Practice Questions for Cisco 200-201 Exam

NetFlow is a network protocol developed by Cisco for collecting IP traffic information and monitoring network flow. It provides valuable data about the network sessions occurring within the network, such as source and destination IP addresses, port numbers, and protocols used. This session data is useful for understanding traffic patterns, volume, and usage.

According to NIST SP800-61, the incident response lifecycle consists of four phases: Preparation, Detection and Analysis, Containment, Eradication and Recovery, and Post-Incident Activity.

When a SOC team member checks the Cisco Firepower Manager dashboard for further isolation actions, they are working within the Eradication and Recovery phase.

This phase focuses on removing the threat from the environment and recovering affected systems to normal operations.

References

NIST SP800-61 Computer Security Incident Handling Guide

Incident Response Phases Explained

Role of SOC in Incident Response

 CDFS stands for Compact Disc File System, which is a file system used by Mac OS to store data on CDs. CDFS is also known as ISO 9660, which is a standard format for data interchange on optical discs. CDFS allows files to be accessed by different operating systems, such as Windows, Linux, and Mac OS. Therefore, an ISO file that is stored in CDFS format is data from a CD copied using Mac-based system. References := Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 4: Network Intrusion Analysis, Lesson 4.4: File Type Analysis, Topic 4.4.1: File Systems, page 4-40.

The regular expression c(rgr)+e matches strings where “rgr” occurs one or more times between “c” and “e”. The string “crgrrgre” fits this pattern as it has the sequence “rgr” repeated twice between “c” and “e”. The plus sign (+) in the regular expression indicates that the preceding element must appear one or more times for a match to occur

 ARP cache poisoning is a type of attack that intercepts traffic on a switched network by sending spoofed ARP messages to associate the attacker’s MAC address with the IP address of a legitimate host or gateway. This way, the attacker can redirect the traffic intended for the legitimate host or gateway to his own device and perform a man-in-the-middle attack. References := Cisco Cybersecurity Operations Fundamentals

 For high availability and responsiveness, especially where milliseconds of latency are critical, an engineer must analyze the network’s performance in detail. Total throughput on the interface of the router will provide information on the bandwidth and traffic load, which is essential for understanding if the network can handle the current and projected traffic without delays. NetFlow records are crucial for this analysis as they provide data about the traffic flow across the network, which helps in identifying patterns, peak usage times, and types of traffic. This information is vital for making informed decisions to optimize traffic movement and minimize latency123.

References :=

Cisco’s guide on Network Traffic Analysis1.

Cisco’s white paper on Network Security Policy: Best Practices2.

Cisco’s documentation on Implementation of High Availability

NIST SP 800-61 r2 outlines a structured incident handling lifecycle composed of four phases: Preparation, Detection and Analysis, Containment, Eradication, and Recovery, and Post-Incident Activity. Detection and Analysis involve identifying and investigating incidents, while Post-Incident Activity focuses on lessons learned and evidence retention for future reference.