Network Function Virtualization (NFV) in Computer Networks - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Network Function Virtualization (NFV)?

NFV is a technology that replaces traditional network hardware devices with software running on standard servers. It allows network functions to be virtualized and managed more flexibly and efficiently.

beginner

Name two common network functions that can be virtualized using NFV.

Examples include firewalls and load balancers. These functions traditionally run on dedicated hardware but can be virtualized as software in NFV.

intermediate

How does NFV improve network management compared to traditional hardware?

NFV allows network functions to be deployed, updated, and scaled quickly through software, reducing the need for physical hardware changes and enabling faster response to network demands.

intermediate

What is the role of a Virtual Network Function (VNF) in NFV?

A VNF is a software implementation of a network function that runs on virtual machines or containers, replacing physical devices in the network.

advanced

Why is NFV important for modern networks like 5G?

NFV supports flexible, scalable, and cost-effective network services, which are essential for handling the high data rates and diverse applications in 5G networks.

What does NFV primarily replace in a network?

A Physical network devices with software

B Internet cables with wireless signals

C User devices with virtual machines

D Network protocols with new standards

NFV replaces physical network devices like routers and firewalls with software running on standard servers.

Which of the following is a Virtual Network Function (VNF)?

A A physical router device

B An Ethernet cable

C A software firewall running on a server

D A wireless access point

A VNF is a software version of a network function, such as a firewall, running on virtualized infrastructure.

One key benefit of NFV is:

A Less flexibility in network design

B More physical hardware needed

C Slower network updates

D Faster deployment of network services

NFV enables faster deployment and scaling of network services by using software instead of hardware.

NFV is especially useful for which type of networks?

A Modern, dynamic networks like 5G

B Only small home networks

C Networks without internet access

D Networks using only wired connections

NFV supports the flexibility and scalability needed in modern networks such as 5G.

Which technology does NFV rely on to run network functions?

A Analog signal processing

B Virtual machines or containers

C Dedicated physical hardware only

D Manual configuration of cables

NFV runs network functions as software on virtual machines or containers instead of dedicated hardware.

Explain in your own words what Network Function Virtualization (NFV) is and why it matters.

Think about how software can replace physical devices in a network.

Describe how NFV supports modern networks such as 5G and what advantages it brings.

Consider the demands of 5G and how NFV helps meet them.