Network Architecture Concepts and Principles

The video explores various network architectures, starting with the three-tier architecture, which includes core, distribution, and access layers. It then discusses the virtualization of network components and the concept of software-defined networking (SDN). The spine and leaf architecture is introduced, highlighting its efficiency in data centers. Finally, the video covers data center management, including on-premises and co-location options.

What is the primary function of the core layer in a three-tier architecture?

• To manage traffic between users

• To provide direct user access

• To host major services

• To connect to external networks

In the three-tier architecture, what is the role of the distribution layer?

• To connect users directly to the core

• To store user data

• To manage communication between users and the core

• To provide internet access

How is the network architecture similar to a city's layout?

• Both have direct connections to all users

• Both have a central core for services

• Both are designed for maximum security

• Both are primarily residential

What is a key benefit of virtualizing network components?

• Increased physical hardware

• Simplified management of functional planes

• Direct user access to the core

• Reduced network security

Which plane in SDN is responsible for forwarding network traffic?

• Management plane

• Data plane

• Application plane

• Control plane

In SDN, what is the role of the management plane?

• To encrypt data

• To allow administrators to control devices

• To manage routing tables

• To process network packets

What is a characteristic of the spine and leaf architecture?

• Leaf switches connect directly to each other

• Spine switches connect directly to each other

• Spine switches are optional

• Leaf switches connect to spine switches

What type of traffic is referred to as east-west traffic?

• Traffic between different cities

• Traffic within the same data center

• Traffic between data centers

• Traffic going to the internet

What is a potential downside of adding more leaf switches in a spine and leaf architecture?

• Reduced redundancy

• Decreased network speed

• Limited scalability

• Increased complexity of connections

What is co-location in the context of data centers?

• A data center used exclusively for cloud services

• A data center located in a remote area

• Multiple companies sharing a data center

• A single company owning a data center