Free Cisco 200-201 Practice Exam with Questions & Answers | Set: 5

 Statistical detection relies on analyzing data over time to identify patterns and anomalies, without predefined rules. It uses algorithms and statistical models to determine normal behavior and identify deviations. Rule-based detection uses predefined rules or patterns to identify known threats or vulnerabilities, often based on signatures or behaviors associated with specific attacks.

• Data encapsulation is a process in networking where the protocol stack of the sending host adds headers (and sometimes trailers) to the data.
• Each layer of the OSI or TCP/IP model adds its own header to the data as it passes down the layers, preparing it for transmission over the network.
• For example, in the TCP/IP model, data starts at the application layer and is encapsulated at each subsequent layer (Transport, Internet, and Network Access) before being transmitted.
• This encapsulation ensures that the data is correctly formatted and routed to its destination, where the headers are stripped off in reverse order by the receiving host.

References

• Networking Fundamentals by Cisco
• OSI Model and Data Encapsulation Process
• Understanding TCP/IP Encapsulation

• In the Common Vulnerability Scoring System (CVSS), attack complexity refers to the conditions beyond the attacker’s control that must exist for the vulnerability to be successfully exploited.
• This includes factors such as the need for user interaction, the presence of specific configurations, or network conditions that are not easily controlled by the attacker.
• A high attack complexity means that these external factors make exploitation more difficult, while a low attack complexity indicates that fewer such conditions are required.

References

• CVSS v3.1 Specifications Document
• Understanding Attack Complexity in Vulnerability Assessments
• Cybersecurity Frameworks and Metrics

The engineer engaged with the service component by enabling “Audiosrv,” which is the Windows Audio Service responsible for managing audio for Windows-based programs. By setting it to auto-start, the engineer ensured that the service would run automatically upon system startup. Additionally, the engineer interacted with process and thread management by using the Task Manager to modify the behavior of the “Audiosrv” service.

References: The information is based on standard operating procedures for troubleshooting audio issues in Windows OS, which involves services and processes management.

 Input sanitization involves cleaning up user input before processing it, ensuring that it does not contain malicious code intended for buffer overflow attacks or other types of security breaches. References := New Cybersecurity Skills

In the context of NIST SP800-61, a precursor is an event that indicates the potential occurrence of an incident. When an organization adjusts its security stance in response to online threats made by a known hacktivist group, the initial event—the threats—would be considered a precursor. It is an indication of a potential future attack or security incident34.

References :=

• NIST SP 800-61 Rev. 2, Computer Security Incident Handling Guide3.
• Computer Security Incident Handling Guide - NIST

 Full packet capture requires the largest amount of storage space because it involves recording all packets that pass through a network, including all headers and payloads. This type of data collection is comprehensive and allows for detailed analysis, but due to the volume of data it encompasses, it demands significant storage capacity1.

References := The Cisco Secure Network Analytics Data Store Design Guide discusses the storage requirements for different types of network data collection, highlighting the substantial storage needs for full packet captures1.

The PCAP file shows a network packet capture of an HTTP GET request from a client to a server. The User-Agent header field identifies the type and version of the client software that generated the request. In this case, the User-Agent is Mozilla/5.0, which indicates that the client is using a Mozilla-based browser or application. The User-Agent can help the server to customize the response based on the client’s capabilities and preferences. References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) v1.0, Module 3: Network Protocols and Services, Lesson 3.2: HTTP and HTTPS, Topic 3.2.1: HTTP Headers.

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Transaction data consists of connection level, application-specific records generated from network traffic. It provides information about the source, destination, protocol, and application of each network connection. Transaction data can be used to identify anomalies, malicious activities, and user behaviors on the network. References := Cisco CyberOps Engineer