Cisco Updated 200-201 Exam Questions and Answers by tate

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.

 The PCAP file in the exhibit shows a Transmission Control Protocol (TCP) communication between two IP addresses. In the data section of the packet capture, “pdy/3.1… http/1” is visible, indicating that HTTP (Hypertext Transfer Protocol) is being used as the application protocol for this communication.

References := The Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) course material covers the analysis of network traffic using tools like packet analyzers to identify application protocols in use1.

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.

Threat intelligence is crucial for organizations to understand the threats they are currently facing. It involves collecting, evaluating, and disseminating information about current or potential attacks that could affect an organization. This intelligence can help organizations prioritize their security measures based on the likelihood and potential impact of different threats. By using threat intelligence, organizations can be more proactive in their defense strategies and respond more effectively to cyber threats.

References: The Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) course emphasizes the importance of threat intelligence in monitoring security incidents and responding to them