Oracle Cloud Infrastructure Networking Professional (1Z0-1124-26) - Practice Exam 1

1. A backend is being retired during a rolling deployment. Which behavior should be evaluated to reduce interrupted requests?
2. A customer advertises a prefix to OCI over BGP but cannot receive responses from the VCN. What is a relevant first investigation?
3. A customer wants access to supported Oracle public services over FastConnect without traversing the public internet. Which mode is relevant?
4. A design places application subnets in one VCN and databases in a peered VCN. Which TWO requirements should be validated? Select TWO.
5. A design uses an LPG between two local VCNs and assumes it automatically provides transit to a third network. What is the key concern?
6. A DNS record changes, but some clients continue using its old address for a period. What is the likely reason?
7. A DRG route change breaks only one attached VCN. What is the most targeted initial investigation?
8. A FastConnect physical connection is up, but the required BGP session is down. What is the effect on that virtual circuit's routed traffic?
9. A firewall appliance is the sole transit next hop for production. What should be addressed before calling the design highly available?
10. A flow uses stateless security rules. What must be considered for return packets?
11. A health check receives HTTP 404 although the backend's main application path works. What should be checked?
12. A hub firewall must inspect spoke-to-spoke traffic. What must be true of the routing design?
13. A network appliance forwards traffic through its VNIC as a routing next hop. What instance setting may need adjustment for the supported appliance design?
14. A network engineer is planning FastConnect circuit maintenance and wants a graceful routing transition where supported. What capability should be evaluated?
15. A network security group references another group as a source. What does that membership-based approach provide?
16. A network team wants a public address that can be retained and reassigned within the region. Which type should it choose?
17. A new VCN is created with its default route table. What should the architect assume about routes to external destinations?
18. A private application needs temporary administrative access without permanent public SSH exposure. Which OCI capability should be evaluated?
19. A private FastConnect link is proposed for sensitive traffic. Which statement is correct about encryption requirements?
20. A private subnet contains IPv4 instances without public addresses. They need outbound connections to public package repositories. What should provide the egress path?
21. A public load balancer uses private application backends. Must each backend receive a public IP address?
22. A remote peering connection is established between DRGs, but application traffic fails. Which TWO checks are appropriate? Select TWO.
23. A route change caused an outage, but operators are unsure who made it. Which evidence should accompany flow analysis?
24. A server's route and cloud security rules permit TCP 8443, but connections are refused immediately. Which check is most relevant?
25. A Site-to-Site VPN connects OCI to a customer router. One tunnel fails. What determines whether application traffic continues?
26. A spoke VCN prefix is missing from a hub DRG route table. What should be inspected?
27. A subnet route table contains 10.0.0.0/8 and 10.50.0.0/16 destinations. Which route matches traffic to 10.50.2.8 when both are otherwise applicable?
28. A team adds an internet gateway to a VCN but leaves a subnet private. What is true of public IPv4 assignment in that subnet?
29. A team introduces a more-specific route through an appliance while retaining a broad route through a DRG. What should be tested?
30. A team needs faster detection of a supported FastConnect forwarding-path failure than ordinary BGP timers provide. Which mechanism should it evaluate?
31. A team wants DNS-based failover between regional application endpoints. What else must the design account for?
32. A VCN will connect to corporate 10.20.0.0/16 and a peered VCN using 10.30.0.0/16. Which proposed CIDR avoids overlap?
33. A VNIC's NSG allows TCP 443, while its subnet security list also has a broader applicable allow rule. What is the key security implication?
34. A web application needs HTTP path-based routing to different backend services. Which OCI service type should be evaluated first?
35. A web tier and database tier share a VCN. Which control can express application-tier membership independently of subnet-wide security lists?
36. An engineer removes an ingress rule but observes that access remains possible. What should be investigated?
37. An enterprise combines FastConnect with Site-to-Site VPN as backup. What should be validated before production acceptance?
38. An enterprise wants private connectivity from its data center to VCN private addresses. Which FastConnect mode fits?
39. An instance needs a secondary VNIC in another VCN. Which placement constraint must be satisfied?
40. An internal application name must resolve inside the VCN but must not be published in public DNS. What should the architect evaluate?
41. An IPv4 subnet has CIDR 10.60.4.0/29. How many addresses remain after OCI's three reserved subnet addresses?
42. An OCI subnet must support compute instances across availability domains within one region. Which design fits?
43. Corporate clients must resolve an OCI private zone. What should the hybrid DNS design include?
44. Operations needs to identify accepted and rejected traffic involving selected VNICs. Which OCI feature is relevant?
45. Several VCNs attach to an upgraded DRG. Which components control the routes used by traffic entering through an attachment?
46. Small packets succeed across a hybrid connection, but larger transfers stall. Which network issue should be investigated?
47. TLS terminates at the load balancer, but policy also requires encryption between it and the backends. What is needed?
48. Traffic from on-premises must reach a supported Oracle service privately through a service gateway path. What should be designed explicitly?
49. Two environments require different answers for the same private hostname. Which capability is relevant?
50. Two hybrid links share a single on-premises router and carrier path. Which change best improves resilience against a router or path failure?

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