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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Designing Cisco Security Infrastructure (DCSI) |
| Exam Number: | 300-745 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CCIE Security CCNP Security |
| Available Languages: | English, Japanese |
| Real Exam Qty: | Approximately 55โ65 |
| Exam Price: | $300 USD (may vary by region) |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple response, Multiple choice, Drag and drop, Simulation / scenario-based questions |
| Recommended Training: | Cisco Learning Network - DCSI Cisco Official Training: Designing Cisco Security Infrastructure |
| Exam Registration: | Cisco Certification Registration Pearson VUE Cisco Exams |
| Sample Questions: | Cisco 300-745 Sample Questions |
| Exam Way: | Available via Pearson VUE test centers and online proctored exam |
| Pre Condition: | Recommended: CCNA-level knowledge. Required for CCNP Security: Passing 350-701 SCOR core exam plus one concentration exam such as 300-745 DCSI. |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/300-745-dsci.html |
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NEW QUESTION # 69
A construction company recently introduced a BYOD policy, where contractors can bring personal devices and connect to the wireless network. The network engineer configured a Wi-Fi network with a guest splash page to provide internet access only. Although the policy was limited to wireless devices, contractors started bringing devices that needed wired connections without authorization and connecting to the network. The network team suggested shutting down ports where unauthorized devices are connected. Which technology must be implemented to ensure that wired and wireless devices are granted network access only after successful authentication?
Answer: A
Explanation:
To secure both wired and wireless access points against unauthorized devices, the industry-standard framework isIEEE 802.1x. This technology provides port-based network access control (PNAC), ensuring that no traffic-wired or wireless-is forwarded by the switch or access point until the device or user has been successfully authenticated by a central authority, typically a RADIUS server likeCisco Identity Services Engine (ISE).
In an 802.1x architecture, the device (Supplicant) must provide valid credentials or certificates to the switch
/AP (Authenticator). The Authenticator then communicates with the Authentication Server to verify the identity. If authentication fails, the port remains in a "closed" state, effectively preventing the unauthorized
"rogue" wired connections mentioned in the scenario. This approach is far more scalable and dynamic than manually shutting down ports or usingVACLs(Option C), which are static filters based on IP or MAC addresses.VxLANs(Option A) are used for network virtualization and overlay tunneling, whilePrivate VLANs(Option B) provide Layer 2 isolation within a subnet but do not verify identity. By implementing
802.1x, the construction company establishes a robust "gatekeeper" at the hardware level, satisfying the Cisco SDSI objective of securing the network edge through identity-based access control for a diverse set of devices.
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NEW QUESTION # 70
A developer is building new API functions for a cloud-based application. Before writing the code, the developer wants to ensure that destructive actions, including deleting and updating data, are properly protected by access control identifying sensitive fields such as those that contain passwords or personally identifiable information. Which approach must be used to score the risks proactively?
Answer: C
Explanation:
In a DevSecOps environment, "shifting left" means identifying risks before a single line of application code is even executed.Open API Specification (OAS) Analysisis a proactive technique where the "contract" of the API (the YAML or JSON file defining its endpoints, methods, and data structures) is audited for security flaws.
By analyzing the OAS, security tools can proactively identify if "destructive" methods-like DELETE or PATCH-lack proper authorization scopes or if sensitive fields (like PII or passwords) are being exposed in responses where they shouldn't be. This allows the developer to "score" the risk based on the API's design before moving into the implementation phase.
WhileSAST (Static Application Security Testing)(Option B) is vital for finding vulnerabilities in written source code, it occursafterthe code is written.SBOM (Software Bill of Materials) Generation(Option C) tracks third-party libraries but doesn't analyze API logic.CSPM (Cloud Security Posture Management) (Option D) focuses on the misconfiguration of the cloud infrastructure (like open S3 buckets) rather than the internal logic of the API itself. OAS Analysis specifically addresses the developer's need to validate access controls and sensitive data handling during the design and definition stage of API development.
NEW QUESTION # 71
What is the primary benefit of conducting a root cause analysis after a security incident?
Answer: C
Explanation:
Root cause analysis focuses on identifying the underlying cause of a security incident. This enables organizations to improve system design, controls, or processes so that similar incidents do not happen again, rather than only fixing symptoms.
NEW QUESTION # 72
How does a SOC leverage flow collectors?
Answer: A
Explanation:
Aflow collector(such asCisco Secure Network Analytics, formerly Stealthwatch) is a critical tool within a Security Operations Center (SOC) for providing "pervasive visibility" into the network. Instead of capturing every full packet-which is resource-intensive-a flow collector ingests NetFlow or IPFIX data, which contains metadata like source/destination IPs, ports, and the volume of data transferred.
The SOC leverages this data forthreat detection and responseby establishing a baseline of normal network behavior. When a flow collector identifies an anomaly-such as an endpoint suddenly sending gigabytes of data to an unusual external IP (data exfiltration) or scanning internal ports (lateral movement)-it flags the incident for analysis. UnlikeReal-time content filtering(Option D), which happens at the gateway (e.g., Cisco Umbrella or WSA), flow collectors provide a historical record and behavioral analysis ofallinternal and external traffic. They do not performload balancing(Option B) orbackup/recovery(Option A). In the Cisco SDSI framework, flow analysis is essential for identifying the "unknown unknowns" and providing the forensic evidence needed to understand the scope and path of a security breach.
NEW QUESTION # 73
In preparation for an upcoming security audit, a metal production company decided to enhance the security of container-based services running in a Kubernetes environment. The company wants to ensure that all communications between applications and services are encrypted. The administrator plans to implement mTLS service between application and services to secure the data exchanges. Given the need to manage encryption at scale and maintain efficient communication across the cluster, which network transport technology must be employed?
Answer: D
Explanation:
A Service Mesh provides built-in support for mutual TLS (mTLS) between microservices, ensuring encrypted communication at scale in Kubernetes environments. It also centralizes management of certificates, keys, and security policies, making it the right choice for securing data exchanges across the cluster.
NEW QUESTION # 74
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