Cisco Updated 200-201 Exam Questions and Answers by syeda

Network Address Translation (NAT) is the technology that allows a single IP address to send and receive traffic for multiple devices by modifying the IP header. NAT remaps one IP address space into another, enabling multiple devices to use a single public IP address to send and receive packets through the Internet2.

References := The concept of NAT and its role in network traffic management is detailed in networking resources and documentation, including those provided by network solution providers2.

The QR field in the DNS header specifies whether the message is a query (QR=0) or a response (QR=1). This bit is set to 0 for query messages and is set to 1 for response messages, allowing the recipient to distinguish between the two.

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.

 SP 800-61 Rev. 2, Computer Security Incident Handling Guide | CSRC, Computer Security Incident Handling Guide - NIST, We Read NIST SP 800-61 so You Don’t Have to.