CCNP - Cisco Certified Network Professional Practice Questions: Network Security Domain

Published: July 31, 2025 | 20 min read

Test your CCNP - Cisco Certified Network Professional knowledge with 10 practice questions from the Network Security domain. Includes detailed explanations and answers.

CCNP - Cisco Certified Network Professional Practice Questions

Master the Network Security Domain

Test your knowledge in the Network Security domain with these 10 practice questions. Each question is designed to help you prepare for the CCNP - Cisco Certified Network Professional certification exam with detailed explanations to reinforce your learning.

Question 1

In a network using OSPF, a router is configured with multiple areas and is experiencing high CPU usage. Which configuration change can help reduce the CPU load?

A) Implement OSPF passive interfaces on unnecessary interfaces.

B) Increase the OSPF hello interval.

C) Reduce the OSPF dead interval.

D) Enable OSPF process priority scheduling.

Show Answer & Explanation

Correct Answer: A

Explanation: CORRECT: Implementing OSPF passive interfaces on unnecessary interfaces reduces the number of OSPF packets processed, lowering CPU usage. Increasing the hello interval reduces hello packet frequency but may not significantly impact CPU usage. Reducing the dead interval increases the frequency of OSPF processing, potentially increasing CPU load. OSPF process priority scheduling is not a standard feature and does not exist in OSPF configuration.

Question 2

A company needs to ensure data integrity and confidentiality for its branch offices. Which VPN topology is best suited for this purpose?

A) Hub-and-spoke VPN topology

B) Full mesh VPN topology

C) Point-to-point GRE tunnels

D) Remote access VPN

Show Answer & Explanation

Correct Answer: B

Explanation: Full mesh topology provides direct secure communication between all sites, ensuring integrity and confidentiality.

Question 3

A network engineer is tasked with setting up a secure connection for an employee working remotely. Which VPN solution would provide both security and user convenience?

A) L2TP over IPSec

B) SSL VPN

C) GRE tunnel

D) MPLS VPN

Show Answer & Explanation

Correct Answer: B

Explanation: SSL VPNs offer secure connections over any internet connection, with easier setup and use for remote users.

Question 4

An organization wants to enforce security policies across its VLANs using ACLs. Which approach would provide the most efficient management and security?

A) Apply ACLs directly on each VLAN interface.

B) Use a centralized firewall to manage all VLANs.

C) Implement port-based VLAN ACLs on each switch port.

D) Configure VACLs for VLAN-based policy enforcement.

Show Answer & Explanation

Correct Answer: D

Explanation: VACLs (VLAN Access Control Lists) allow for centralized policy enforcement across VLANs, simplifying management and improving security.

Question 5

A network engineer is tasked with configuring route redistribution between OSPF and BGP. The engineer needs to ensure that no routing loops occur. What should be considered in the configuration?

A) Use route-maps to filter routes during redistribution.

B) Configure OSPF as an external type 1 route.

C) Set BGP local preference to a higher value.

D) Use BGP MED to influence inbound traffic.

Show Answer & Explanation

Correct Answer: A

Explanation: CORRECT: Route-maps allow filtering and manipulation of routes to prevent loops during redistribution. Configuring OSPF as an external type 1 does not prevent loops. Setting BGP local preference influences outbound traffic, not loop prevention. BGP MED influences inbound traffic but does not prevent loops.

Question 6

What is the primary purpose of implementing VRF-Lite in a network?

A) To provide redundancy

B) To enable multicast routing

C) To segment network traffic

D) To enhance QoS

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: VRF-Lite is used to segment network traffic by creating separate routing tables on the same physical device. VRF-Lite does not inherently provide redundancy. VRF-Lite does not specifically enable multicast routing. VRF-Lite is not used to enhance QoS directly.

Question 7

Your enterprise network is experiencing frequent unauthorized access attempts. You need to enhance your firewall's security posture. What is the most effective way to achieve this?

A) Implement stateful packet inspection and configure access control lists.

B) Use static NAT to hide internal IP addresses.

C) Enable port mirroring on all switch ports.

D) Configure a basic packet filter.

Show Answer & Explanation

Correct Answer: A

Explanation: Stateful inspection allows the firewall to track active connections and make decisions based on the state of the connection.

Question 8

While configuring a firewall, you decide to implement NAT. What is a primary reason for using NAT in a network security context?

A) To hide internal IP addresses from external networks

B) To increase internet download speeds

C) To enhance routing efficiency

D) To improve internal network segmentation

Show Answer & Explanation

Correct Answer: A

Explanation: NAT helps protect internal IP addresses by making them invisible to external networks.

Question 9

To automate firewall policy updates based on security threat intelligence, which technology would be most effective?

A) Utilizing SNMP traps for real-time alerts

B) Implementing RESTful APIs for policy management

C) Configuring static firewall rules manually

D) Enabling logging for all dropped packets

Show Answer & Explanation

Correct Answer: B

Explanation: RESTful APIs allow for dynamic and automated updates to the firewall policies based on external threat intelligence.

Question 10

A senior network engineer wants to enhance the security of an enterprise network by configuring IPSec VPNs for all remote access. Which IPSec mode should be used to ensure data integrity and confidentiality for this setup?

A) Transport mode with ESP.

B) Tunnel mode with AH.

C) Transport mode with AH.

D) Tunnel mode with ESP.

Show Answer & Explanation

Correct Answer: D

Explanation: Tunnel mode with ESP provides both data integrity and confidentiality for complete packets.

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About CCNP - Cisco Certified Network Professional Certification

The CCNP - Cisco Certified Network Professional certification validates your expertise in network security and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.