300-740 Designing and Implementing Secure Cloud Access for Users and Endpoints (SCAZT) Questions and Answers

The error %OPENDNS-3-DNS_RES_FAILURE indicates a failure to resolve DNS queries via Cisco Umbrella. The most common cause of this error is the router lacking DNS resolution capability. To resolve this, the router must be explicitly configured to use Cisco Umbrella’s OpenDNS servers by adding the following to global configuration:

According to the SCAZT guide (Section 1: Cloud Security Architecture, Pages 17–19), Umbrella enforces cloud-based DNS-layer protection, and upstream devices must be properly configured with working DNS name servers to perform redirection and inspection.

Multifactor Authentication (MFA) is one of the most effective mitigations against brute-force attacks. Even if an attacker guesses or steals a user’s password, they would still need a second authentication factor (e.g., push notification, hardware token, biometric verification) to complete login.

SCAZT Section 2: User and Device Security (Pages 40–43) emphasizes the importance of MFA in protecting identities from password spraying, credential stuffing, and brute-force attacks.

Web Application Firewalls (WAFs) use rate-based rules as one of the primary mechanisms to detect and mitigate Distributed Denial of Service (DDoS) attacks. According to the SCAZT Study Guide, Section 3 (Network and Cloud Security, Pages 74–77), rate-based rules dynamically detect unusual spikes in traffic and can throttle or block connections exceeding predefined thresholds. This form of protection is more adaptive and intelligent than standard ACLs or static filtering, enabling protection against zero-day and volumetric attacks that may not follow known patterns.

When integrating Cisco ISE with Azure AD using SAML SSO:

B: The Azure AD metadata must be uploaded into ISE to establish trust and allow token validation.

D: External Identity Sources settings must be configured in ISE to recognize and process authentication requests via SAML-based identity providers like Azure AD.

These are mandatory steps for enabling browser-based SSO authentication in ISE as explained in SCAZT Section 2 (User and Device Security, Pages 42–44), which describes federated identity integration.

Note: Option A is already completed as stated in the prompt. Options C and E are not essential to the authentication flow in this SAML context.

Rule 3 allows all traffic (including SSH) from 10.1.0.0/30 during the hours of 18:00–08:00, which directly conflicts with Rule 1 that is intended to deny SSH at those same hours. Since firewall rules are evaluated top-down and Rule 3 allows traffic during the exact period where SSH should be blocked, deleting Rule 3 will allow Rule 1 to apply correctly.

This behavior is explained in SCAZT Section 3 (Network and Cloud Security, Pages 72–75), where rule precedence and time-based evaluation logic are discussed.

When integrating Duo Authentication Proxy with Active Directory for multifactor authentication (MFA), you must:

Configure the Identity Source in the Duo Admin Panel as Active Directory (not SAML), since it’s using the Authentication Proxy.

Configure the authentication proxy settings in the [sso] section to communicate with both AD and the Duo cloud.

This setup allows Active Directory to be the primary identity store while Duo provides the second authentication factor.

The Secure Cloud Analytics alert log shows multiple SSH connections on port 22 from diverse and geographically distributed IP addresses targeting a single GCP instance (www-gcp-east-4c). According to the Cloud Analytics alert logic described in SCAZT (Section 6: Threat Response, Pages 113–116), this behavior indicates “Geographically Unusual Remote Access.” It typically triggers when a host receives connections from countries not normally associated with the network’s usage profile. This is often linked to reconnaissance or brute-force SSH attempts.

Cisco Telemetry Broker (CTB) is designed to act as an intermediary that filters, enriches, and routes telemetry data—such as NetFlow, Syslog, and SNMP—across various tools. It optimizes resource usage by preventing overload and ensures only relevant telemetry is forwarded to appropriate analytics platforms.

The SCAZT guide (Section 5: Visibility and Assurance, Pages 93–95) describes CTB’s role in applying filters and transformations to raw telemetry data to enhance visibility and reduce noise.

In the Cisco SAFE framework, Reference Architectures serve as blueprints that logically arrange security technologies and capabilities to specific business goals and network use cases. These architectures integrate technologies across domains (e.g., cloud, endpoint, branch) and reflect best practices for layered security.

SCAZT Section 1 (Cloud Security Architecture, Pages 13–15) states that Reference Architectures are built from Secure Domains and Places in the Network, offering a structured approach to threat defense.

Rule 1 is a “deny all” rule placed at the top of the access control policy. Because Cisco firewalls process rules sequentially from top to bottom, Rule 1 is blocking all traffic—including RDP (Rule 2) and HTTPS (Rule 3). To allow specific traffic, the “deny all” catch-all rule should be placed last so that the specific allow rules are evaluated first.

SCAZT Section 3 (Network and Cloud Security, Pages 69–74) discusses rule hierarchy and clearly states that allow rules must precede any general deny policies to ensure intended traffic is matched correctly. This best practice is essential when dealing with multi-cloud access control.

To integrate Cisco Webex with Duo SSO using the Duo Access Gateway, the engineer must:

E: Add Cisco Webex as a new SAML application to Duo.

C: Configure the Webex application settings, including Entity ID, Assertion Consumer Service URL, and signing requirements.

Uploading XML metadata (Option A) is typically used when importing IdP settings, not for Duo application configuration. JSON (Option B) is not used in SAML-based Duo app configurations.

Zero Trust is based on the concept of “never trust, always verify.” It ensures that no user or device is inherently trusted, even if they are inside the corporate network. Cisco’s Zero Trust Architecture implements continuous trust verification for every access request, using identity, device posture, and behavior analysis.

SCAZT Section 1 (Cloud Security Architecture, Pages 13–17) describes how Cisco’s Zero Trust model authenticates and authorizes access before permitting resource interaction.

The Cisco SAFE architecture uses the concept of Secure Domains as foundational blocks. These domains represent areas of the network (e.g., Branch, Data Center, Cloud, Edge) that require specific security controls. Each domain aligns with controls across visibility, segmentation, threat protection, and identity services.

Cisco Identity Services Engine (ISE) is the central policy engine for posture assessments. As outlined in the SCAZT guide (Section 2: User and Device Security, Pages 39–44), to implement posture assessment and client provisioning correctly, an administrator must create posture policies within Cisco ISE and configure the Network Access Device (NAD)—such as a switch, WLC, or firewall—for redirection. This redirection sends the user to the posture portal, where ISE verifies the Secure Client modules (such as AnyConnect) and enforces compliance with antivirus signatures and OS updates.

ISE evaluates endpoint health based on pre-defined compliance rules and supports automatic remediation via the client provisioning portal. This ensures consistency and policy enforcement across distributed environments.