Free Practice Questions for Cisco 200-201 Exam

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

 Indicators of attack (IoAs) are signs that an attack may be in progress or imminent. Malware reinfection within a few minutes of removal (D) is a strong IoA because it suggests that the attacker has a persistent mechanism to redeploy malware, indicating an active compromise of the system.

The difference between tampered and untampered disk images is:

Tampered Images: These are disk images that have been altered or modified in some way after their initial creation. The stored hash and the computed hash will not match if the image has been tampered with.

Untampered Images: These are disk images that have not been altered since their creation. They are considered authentic and reliable for forensic investigations. The stored hash and the computed hash will match, confirming that the image has remained unchanged.

Therefore, the correct answer is: D. Untampered images are used for forensic investigations.

In a PCAP file, which is used to capture network packets, each packet contains various pieces of information that can be analyzed. The source and destination addresses refer to the IP addresses of the sender and receiver of the packets. The source and destination ports refer to the port numbers used for the communication, with common ports like 443 indicating HTTPS traffic. The network protocol here is TCP, which is responsible for establishing a connection and ensuring the delivery of packets. The transport protocol is IPv4, which is the underlying protocol for routing packets across the network. Lastly, the application protocol is TLS v1.2, which is used for secure communication over the internet.

References := The Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) course material covers the analysis of network traffic and the interpretation of PCAP files, which includes identifying the different elements within a packet capture1.

An incident response plan is a document that defines the roles and responsibilities, procedures, and processes for detecting, analyzing, containing, eradicating, recovering, and learning from security incidents. The purpose of an incident response plan is to minimize the impact of incidents on the organization’s assets, operations, and reputation, and to restore normal operations as quickly as possible. An incident response plan is not the same as a security management plan, a disaster recovery plan, or a backup and archiving plan, although they may be related or complementary. References := Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) - Cisco, page 92; NIST SP 800-61 Rev. 2, Computer Security Incident Handling Guide, page 2-3

Resource exhaustion is an evasion technique where an attacker overwhelms a system with a high volume of requests from multiple sources. This can cause the system to become overloaded and unable to process legitimate traffic, potentially allowing the attacker to bypass security measures like intrusion detection systems.

References := The answers are based on the knowledge from the Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) course material, which covers various cybersecurity concepts, including file identification methods, application control technologies, firewall utilities, and evasion techniques

 In the context of a cybersecurity breach, attribution involves identifying the responsible party. Since the external USB device was not found, the focus shifts to the actions performed by the receptionist. Analyzing these actions can provide insights into how the breach occurred and may help in attributing the incident to the threat actor

References := Cisco Certified CyberOps Associate 200-201 Certification Guide

SQL injection is a type of vulnerability that allows an attacker to execute malicious SQL statements on a database server. This can result in reading, writing, or erasing information from the database, as well as bypassing authentication, executing commands, or compromising the server. SQL injection exploits the lack of input validation or output encoding in web applications that interact with databases. References := Cisco Cybersecurity Operations Fundamentals, Module 1: Security Concepts, Lesson 1.3:Common Network Application Operations and Attacks, Topic 1.3.2: Web Application Attacks