Changed 1z0-1124-25 Exam Questions

Zero Trust Context:Assumes no inherent trust, requiring explicit controls at all network stages.

Evaluate Principles:

Implicit Trust:Assumes trust, opposite of Zero Trust; incorrect.

Least Privilege:Grants minimal access, explicitly enforced; aligns with Zero Trust.

Perimeter Security:Relies on boundary protection, not Zero Trust; incorrect.

Network Segmentation:Isolates networks, a tactic not a principle; incomplete.

Conclusion:Least Privilege is the core principle for explicit access control.

Zero Trust Packet Routing in OCI emphasizes Least Privilege. The Oracle Networking Professional study guide states, "The Least Privilege principle in Zero Trust requires that access controls be explicitly defined and enforced at every network communication stage, ensuring no implicit trust" (OCI Networking Documentation, Section: Zero Trust Networking). This drives granular security policies.

Requirements: Outbound internet access, no inbound exposure, and private OCIR access.

Option A: Internet Gateway allows inbound traffic, violating the no-exposure rule—incorrect.

Option B: NAT Gateway enables outbound-only internet access, but Internet Gateway adds inbound exposure—incorrect.

Option C: NAT Gateway provides outbound internet access without inbound exposure; Service Gateway enables private OCIR access—correct.

Option D: DRG is for external networks, not internet/OCIR access; Internet Gateway exposes servers—incorrect.

Conclusion: Option C satisfies all requirements.

Oracle states:

"Use a NAT Gateway for outbound internet access from private subnets without inbound connectivity. Use a Service Gateway for private access to OCI services like OCIR."This supports Option C. Reference:NAT and Service Gateway Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/NATgateway.htm & docs.oracle.com/en-us/iaas/Content/Network/Tasks/servicegateway.htm).

Requirements: HA and IPv6 support for public web app.

Option A: ULA is private, not routable; NAT for IPv6 is inefficient—incorrect.

Option B: ULA doesn’t support public IPv6 clients—incorrect.

Option C: Public IPv6 CIDR is correct, but IPv4-only LB with NAT lacks direct IPv6—less resilient.

Option D: Public IPv6 CIDR with dual-stack LB and instances ensures full IPv6 support and HA across ADs—correct.

Conclusion: Option D maximizes resilience and connectivity.

Oracle states:

"For public IPv6 applications, use a public IPv6 CIDR block and configure Load Balancers and instances for both IPv4 and IPv6 to ensure resilience."This supports Option D. Reference:IPv6 in OCI - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingIPv6.htm).

Requirement: Provide VLAN config info for FastConnect setup.

Option A: CIDR blocks are for routing, not VLAN setup—incorrect.

Option B: VLAN ID defines the circuit, BGP ASN and peering IPs establish routing—essential and correct.

Option C: MTU is a performance setting, not required for VLAN config—incorrect.

Option D: OCID and compartment ID are for OCI management, not provider setup—incorrect.

Conclusion: Option B provides the necessary VLAN configuration details.

Oracle states:

"For FastConnect, provide the provider with a VLAN ID, your BGP ASN, and BGP peering IPs to configure the virtual circuit."This confirms Option B. Reference:FastConnect Configuration - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.htm#providerconfig).