CCNA Network Exam Prep 2026 practice questions and answers. Tap an option to test yourself — you'll see the correct answer and a plain-English explanation for every question. Free, no login.
Q11What are three benefits of implementing wireless LANs (WLANs)? (Choose three.)
✓ Correct answer: A. Provides mobility to users.
Implementing a WLAN has several benefits, including simplifying the addition of new devices, providing mobility to users, and reducing cabling costs. While WLANs can be fast, they are generally not faster than wired LANs. Additionally, without proper configuration, they are typically less secure than wired networks.
Q12In a typical enterprise network, where would you most likely place the DHCP server to ensure efficient IP address allocation to client devices?
✓ Correct answer: D. Core Layer
Answer: Core Layer In enterprise network design, the DHCP server is typically placed in the core layer to ensure reliable and efficient IP address management. This allows the server to handle requests from various subnets effectively. Placing the DHCP server in the distribution or access layer can introduce inefficiencies and potential points of failure.
Q13Which VLAN tagging standard allows for up to 4094 VLANs and is defined in IEEE 802.1Q?
✓ Correct answer: D. 802.1Q
Answer: 802.1Q The IEEE 802.1Q standard allows for VLAN tagging, enabling up to 4094 VLANs in a network. 802.1D is the original standard for Ethernet bridging. VTP (VLAN Trunking Protocol) manages VLAN configuration across switches, but does not define VLAN tagging itself. RSTP is defined in IEEE 802.1w, which provides rapid convergence for spanning tree protocol.
Q14What are three settings that must be configured on a router's interface to ensure proper network access? (Choose three.)
✓ Correct answer: A. Subnet mask
A router's interface needs to be configured with an IP address, subnet mask, and default gateway to ensure proper network access.
Q15What are three of the configuration options available when setting up a VLAN on a Cisco switch through its CLI? (Choose three.)
✓ Correct answer: A. State
Three of the available configuration options when setting up a VLAN on a Cisco switch through its CLI are Name, MTU Size, and State. Interface is configured under a different context.
Q16Which two statements accurately describe a network setup where Ansible has been used to automate configuration on all-new switches? (Choose two.)
✓ Correct answer: B. All switches are used as Layer 3 switches.
When using Ansible for network automation, the configurations are generally pushed to devices in a uniform manner. In this scenario, each switch is configured to operate in a Layer 3 mode to efficiently route data. This ensures all switches have IP addresses and act as routers, providing more streamlined network management. Additionally, it is typical for each switch to implement a common routing protocol such as BGP.
Q17Which two sentences accurately describe the role of APIs in software-defined networking (SDN)? (Choose two.)
✓ Correct answer: A. They enable the controller’s data and functions to be used by applications and business logic.
In software-defined networking (SDN), APIs (Application Programming Interfaces) play a critical role in facilitating communication between different architectural layers. The northbound APIs (NBAPIs) connect the SDN controller to applications and business logic. This enables higher-level programs to utilize network data and services. The southbound APIs (SBAPIs) link the controller to the physical and virtual network devices, enabling the controller to instruct and manage the data plane functions.
Q18Which feature of Cisco DNA Center allows for automated configuration changes based on policy adjustments?
✓ Correct answer: B. Plug and Play
Answer: Plug and Play Plug and Play is a feature of Cisco DNA Center that allows for automated configuration changes based on policy adjustments. Network time travel is a feature that lets an administrator see past client performance to compare it to current use. Path trace discovers the path that packets take to their destination based on routing tables. Client 360 gives a comprehensive view of a client's health status. Encrypted traffic analysis lets administrators detect threats in encrypted traffic.
Q19In the context of network programmability, which of the following represents the plane responsible for executing commands that adjust the behavior of network devices?
✓ Correct answer: C. Control
Answer: Control The control plane is responsible for executing commands that dynamically alter the behavior of network devices by controlling data paths and establishing routing. The data plane focuses on the actual forwarding of packets. The management plane is involved in managing device configuration and network policies. The application plane is not commonly used terminology in network programmability.
Q20Which two sentences accurately describe characteristics of infrastructure automation tools? (Choose two.)
✓ Correct answer: B. Ansible uses YAML as its configuration format.
Infrastructure automation tools help streamline the deployment, configuration, and management of infrastructure. Ansible uses YAML as its configuration format. Terraform uses HashiCorp Configuration Language (HCL) for defining infrastructure. Both tools aim to improve consistency and efficiency in managing large-scale environments.
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