Cisco CCNP Security 350-701 New Questions

ExplanationExplanationA teardrop attack is a denial-of-service (DoS) attack that involves sending fragmented packets to a targetmachine. Since the machine receiving such packets cannot reassemble them due to a bug in TCP/IPfragmentation reassembly, the packets overlap one another, crashing the target network device. This generally happens on older operating systems such as Windows 3.1x, Windows 95, Windows NT and versions of the Linux kernel prior to 2.1.63.

 The Cisco ESA uses the Sender Domain Reputation (SDR) service to assign a reputation verdict to each message based on the sender’s domain and other attributes. The SDR verdicts range from Awful to Good, and each verdict has a corresponding reputation score. The administrator can configure a message or content filter to take action on messages based on their SDR verdict or score. For example, the administrator can set a threshold score to drop messages that have a poor or awful reputation. However, if the SDR service cannot determine a verdict for a message, it assigns an undetermined verdict with a score of -1. This means that the message will not be dropped by the filter unless the administrator explicitly sets the threshold to -1 or lower. Therefore, the reason why the Cisco ESA is not dropping files that have an undetermined verdict is because the file has a reputation score that is above the threshold. References :=

Some possible references are:

• Configure Sender Domain Reputation for ESA
• Sender Domain Reputation Filtering
• Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0 (source book)

Cisco DNA Center APIs are RESTful APIs that allow you to automate and operate your network at scale, using Python scripts or other tools. They are not Cisco proprietary, as they follow the OpenAPI specification and can be accessed by any client that supports HTTP requests. They do not require Postman, although Postman is a useful tool to test and explore the API endpoints. They can quickly provision new devices by applying predefined templates and workflows, and they can view the overall health of the network by retrieving metrics and alerts from various sources. References :=

• Cisco DNA Center Platform - Cisco DevNet
• Introduction to Cisco DNA Center REST APIs - Cisco DevNet Learning Labs
• Cisco DNA Center Platform User Guide, Release 2.3.4

Using an Internet browser to access cloud-based service creates the risk of insecure implementation of API. API stands for Application Programming Interface, which is a set of rules and protocols that allow different applications or services to communicate and exchange data. API is often used to access cloud-based service, such as software as a service (SaaS), platform as a service (PaaS), or infrastructure as a service (IaaS). However, if the API is not implemented securely, it can expose sensitive data or allow unauthorized access to the cloud service. For example, an API may not use encryption, authentication, or authorization mechanisms to protect the data in transit or at rest. An API may also have vulnerabilities such as injection, broken authentication, or insufficient logging and monitoring, which can be exploited by attackers to compromise the cloud service or the user’s browser. Therefore, it is important to follow the best practices and standards for secure API development and testing, such as OWASP API Security Top 10. References:

• 1: Implementing and Operating Cisco Security Core Technologies (SCOR) - Cisco
• 2: 350-701 SCOR - Cisco
• 3: Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0
• 4: 12 Cloud Security Issues: Risks, Threats & Challenges - CrowdStrike
• 5: 12 Risks, Threats, & Vulnerabilities in Moving to the Cloud - SEI Blog
• 6: Remote Browser Isolation Protects Users from Threats - Cisco Umbrella
• 7: Which risk is created when using an Internet browser to access cloud-based service?
• 8: Browser in the Cloud: The Evolution of Secure Browsing - Leostream
• [9]: OWASP API Security Top 10 2023