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Guide for Oracle Cloud Infrastructure 2025 Networking Professional

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Quiz

1/10
You are troubleshooting a connectivity issue between two compute instances within the same VCN. Both
instances are in different subnets. Instance A (IPv4: 10.0.1.10, IPv6: fc00:1:1::10) can ping its subnet
gateway (10.0.1.1) and can ping the IPv6 address of Instance B (fc00:1:2::20), but cannot ping Instance
B's IPv4 address (10.0.2.20). The security lists and network security groups (NSGs) are configured to
allow all traffic between the subnets. The route table for Instance A’s subnet has a rule to route all traffic
destined to 10.0.2.0/24 subnet to the VCN Local Peering Gateway. What is the most probable cause?
Select the answer
1 correct answer
A.
The VCN does not have IPv6 enabled.
B.
The route table for Instance B's subnet is missing a rule to route traffic destined for 10.0.1.0/24 to the VCN Local Peering Gateway.
C.
IPv6 traffic cannot be filtered by security lists or NSGs.
D.
The "ping" utility is not supported on the IPv6 address.

Quiz

2/10
You are designing a backup solution in OCI. Compute instances in a private subnet need to back up data
to OCI Object Storage. Security policy mandates that data transfer must not traverse the public internet.
You need to choose the most secure and cost-effective method for accessing Object Storage. Which
endpoint/gateway configuration should you implement?
Select the answer
1 correct answer
A.
Configure an Internet Gateway and use public Object Storage endpoints.
B.
Configure a NAT Gateway and use public Object Storage endpoints with HTTPS enabled.
C.
Configure a Service Gateway with the Oracle Services Network service CIDR label for your region, and use regional Object Storage endpoints.
D.
Configure a Dynamic Routing Gateway (DRG) and FastConnect to a remote region and use public Object Storage endpoints. Product Questions: Version:

Quiz

3/10
Your company has established a hybrid cloud environment using FastConnect to connect your on-
premises network to your OCI VCN. You are advertising on-premises network prefixes to OCI via BGP.
You want to ensure that OCI only learns routes from your on-premises network that are within a specific
range, and that any other prefixes advertised are rejected to prevent routing conflicts. Which BGP
attribute and configuration on the OCI side should you use to achieve this?
Select the answer
1 correct answer
A.
AS Path Prepending: Configure AS Path Prepending on the FastConnect virtual circuit to discourage OCI from selecting routes outside the desired range.
B.
MED (Multi-Exit Discriminator): Configure MED values on the on-premises BGP router to influence OCI's route selection based on preferred exit points.
C.
Route Filtering using Route Distinguisher (RD) and Route Target (RT): Configure RDs and RTs on the FastConnect virtual circuit to filter routes based on tenant isolation.
D.
Route Filtering using Prefix Lists: Configure Prefix Lists on the FastConnect virtual circuit to accept only the desired prefix ranges and reject all others.

Quiz

4/10
Which OCI service or feature enables the enforcement of granular, identity-based access controls for
packet routing, crucial for implementing Zero Trust principles?
Select the answer
1 correct answer
A.
Internet Gateway
B.
Service Gateway
C.
Network Security Groups (NSGs)
D.
Dynamic Routing Gateway (DRG)

Quiz

5/10
You are using Terraform to deploy a multi-tier application architecture consisting of a public subnet
hosting a load balancer, a private subnet hosting application servers, and another private subnet hosting a
database. The Terraform code successfully creates all the required infrastructure, including route tables
and security lists. However, after deployment, you realize that the load balancer cannot reach the
application servers in the private subnet. You have verified that the load balancer is healthy and the
application servers are running. What is the most likely cause of this connectivity problem?
Select the answer
1 correct answer
A.
The security list associated with the application server subnet does not allow ingress traffic from the load balancer's IP address range.
B.
The route table associated with the application server subnet has a default route pointing to the Internet Gateway, which is incorrect for a private subnet.
C.
The Network Address Translation (NAT) Gateway is misconfigured, preventing the application servers from initiating connections back to the load balancer.
D.
The load balancer's security list is not configured to allow egress traffic to the application server subnet on the required ports (e.g., port 8080).

Quiz

6/10
When configuring transitive routing with a DRG across multiple VCNs and on-premises networks, which
key configuration step ensures that traffic from one VCN is correctly routed through the DRG to an on-
premises destination?
Select the answer
1 correct answer
A.
Configuring static routes on the DRG route table with the on-premises network CIDR and the corresponding VCN attachment.
B.
Configuring dynamic routing protocol (e.g., BGP) on the DRG and the on-premises Customer Premises Equipment (CPE).
C.
Attaching all VCNs to a single LPG and configuring route tables to direct traffic to the on-premises network.
D.
Implementing a Service Gateway to facilitate direct communication between the VCNs and the on- premises network.

Quiz

7/10
In a complex multi-region OCI environment using DRGs for transitive routing, which method is most
efficient for ensuring that route updates from on-premises networks are propagated to all connected
VCNs?
Select the answer
1 correct answer
A.
Manually updating static routes in each VCN's route table.
B.
Using a centralized DRG route table with route distribution enabled.
C.
Attaching each VCN to a separate DRG and configuring static routing between them.
D.
Implementing a Service Gateway to broadcast route updates.

Quiz

8/10
Your organization is deploying a critical database application on OCI. To ensure high availability, you
have deployed the database instances across multiple availability domains (ADs) within a single region.
You need to distribute client connections to the database instances and ensure that the load balancer can
handle long-lived TCP connections with minimal overhead. Session persistence is not required. Which
OCI load balancing solution would you choose in this scenario to minimize latency and connection
establishment overhead?
Select the answer
1 correct answer
A.
Application Load Balancer with HTTP health checks.
B.
Network Load Balancer with TCP health checks.
C.
Application Load Balancer with TCP health checks.
D.
Flexible Load Balancer with HTTP health checks.

Quiz

9/10
You are designing a highly available web application on OCI. The application needs to be accessible
globally with traffic being routed to the nearest region based on user location. Additionally, you need to
implement sophisticated traffic management policies, such as A/B testing and weighted traffic
distribution based on application version. You also require protection against DDoS attacks. Which OCI
load balancing solution is best suited for these requirements?
Select the answer
1 correct answer
A.
Regional Load Balancer
B.
Network Load Balancer
C.
Global Load Balancer with Traffic Management Steering Policies
D.
Flexible Load Balancer

Quiz

10/10
You are configuring a VCN with multiple subnets for a customer. The security team requires that all
instances have IPv6 addresses. You configure the VCN with an IPv6 ULA CIDR block of fc00:1:1::/48
and create two private subnets. After launching instances in the two private subnets, you notice that they
only have IPv4 addresses assigned. You have not manually configured any IPv6 addresses on the
instances themselves. What steps are necessary to ensure the instances automatically receive IPv6
addresses?
Select the answer
1 correct answer
A.
No further steps are needed. Instances will automatically receive IPv6 addresses within the configured subnets upon launch.
B.
Ensure that SLAAC (Stateless Address Autoconfiguration) is enabled on the operating system of the instances within the two subnets.
C.
IPv6 address assignment is only supported on instances launched in public subnets.
D.
Make sure the "Assign public IPv4 address" option is not selected during instance creation. This will force the instance to default to IPv6 allocation.
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  • Quiz name:Oracle Cloud Infrastructure 2025 Networking Professional
  • Total number of questions:469
  • Number of questions for the test:50
  • Pass score:80%

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