Network Fundamentals
Targeted CCNA practice for this exam objective, with an explanation for every answer option.
- Certification
- CCNA
- Domain
- Network Fundamentals
- Questions
- 10
Practice CCNA Network Fundamentals questions with exam-style scenarios, detailed explanations, and option-by-option rationale for this domain.
Example question from this objective
Each option is explained, so the reasoning behind the distractors is part of the answer.
A network team is replacing several physical appliances with software instances that provide routing and firewall functions on virtualization hosts. Which term best describes these software-based network appliances?
- Container network interfaces
- Service chaining
- Virtual Network Functions
- Hypervisors
Container network interfaces — A container network interface plugs container workloads into a network. It provides connectivity for workloads, not a virtualised routing or firewall appliance.
Service chaining — Service chaining describes steering traffic through an ordered set of network functions. It names the pattern that connects them, not the appliances themselves.
Virtual Network Functions — Virtual Network Functions are software implementations of network functions such as routing, firewalling, or load balancing.
Hypervisors — A hypervisor is the virtualisation layer that hosts the software appliances. It provides the platform rather than being the network function itself.