Podcast
Questions and Answers
What is the primary purpose of a demilitarized zone (DMZ) in a network?
What is the primary purpose of a demilitarized zone (DMZ) in a network?
What is the role of a load balancer in the network?
What is the role of a load balancer in the network?
What is the term for the process of assigning a public IP address to a load balancer?
What is the term for the process of assigning a public IP address to a load balancer?
What is the purpose of security policies on a firewall?
What is the purpose of security policies on a firewall?
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What is the term for the zone that connects to the public internet?
What is the term for the zone that connects to the public internet?
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What is the role of DNS in the network?
What is the role of DNS in the network?
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What is the purpose of a multilayer switch in the network?
What is the purpose of a multilayer switch in the network?
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What is the term for the VLANs supported by a multilayer switch?
What is the term for the VLANs supported by a multilayer switch?
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What is a key benefit of using infrastructure as code?
What is a key benefit of using infrastructure as code?
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What is similar to infrastructure as code in terms of its functionality?
What is similar to infrastructure as code in terms of its functionality?
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What is the primary function of a load balancer in a virtualized environment?
What is the primary function of a load balancer in a virtualized environment?
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What enables communication between automation software and network devices in infrastructure as code?
What enables communication between automation software and network devices in infrastructure as code?
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What is the main advantage of using infrastructure as code?
What is the main advantage of using infrastructure as code?
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What is the primary purpose of a batch file?
What is the primary purpose of a batch file?
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What is the term used to describe the process of coordinating and rolling out configurations and deployments without manual intervention?
What is the term used to describe the process of coordinating and rolling out configurations and deployments without manual intervention?
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What is a key feature of modern infrastructure as code tools?
What is a key feature of modern infrastructure as code tools?
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What is the primary benefit of using virtualization in a network environment?
What is the primary benefit of using virtualization in a network environment?
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What is the outcome of using infrastructure as code, as described in the video?
What is the outcome of using infrastructure as code, as described in the video?
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What is the term used to describe the scripts and routines used to build and configure network environments?
What is the term used to describe the scripts and routines used to build and configure network environments?
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What is the primary challenge in manual network deployments?
What is the primary challenge in manual network deployments?
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What is the primary goal of infrastructure as code?
What is the primary goal of infrastructure as code?
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What is the term used to describe the process of verifying and checking for changes in network environments?
What is the term used to describe the process of verifying and checking for changes in network environments?
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What is the primary benefit of using software-defined networking in infrastructure as code?
What is the primary benefit of using software-defined networking in infrastructure as code?
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What is the term used to describe the scripts used by John, a lab engineer, to automate network deployments?
What is the term used to describe the scripts used by John, a lab engineer, to automate network deployments?
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Study Notes
Infrastructure as Code (IAC)
- IAC involves programmatically building and configuring infrastructure, including load balancers, firewalls, routers, switches, and virtual machines.
- The goal of IAC is to achieve consistency in network configuration and prevent drift or changes.
Network Topology Example
- A network topology includes a firewall at the edge, connected to the internet, with a demilitarized zone (DMZ) and interfaces leading to an internal network.
- The internal network has multi-layer switches (e.g., SW1) with routing capabilities and switched virtual interfaces (SVIs) supporting VLANs (e.g., VLAN10, VLAN20, VLAN30).
- The DMZ zone has public services, and security policies are set up on the firewall to control traffic.
Load Balancer and DNS
- A load balancer is used to distribute traffic to servers, and DNS responds with a virtual IP address pointing to the load balancer.
- The load balancer forwards requests to the appropriate server based on factors like browser type and server busy-ness.
Virtualization
- Virtual machines (VMs) are used in a virtualization environment, with a hypervisor providing the environment for the VMs.
- VMs can be networked together, bridged to the real world, and integrated with existing VLANs.
Challenges of Manual Configuration
- Rolling out a network topology manually can lead to mistakes and inconsistencies.
- Changes to the environment can cause drift, and it's difficult to maintain consistency without automation.
Benefits of IAC
- IAC provides consistency in network configuration and deployment.
- Automation and orchestration enable rapid deployment and verification of infrastructure without manual intervention.
- Error handling and drift detection ensure that changes are identified and addressed.
Automation and Orchestration
- Automation involves using scripts and routines to build and configure infrastructure.
- Orchestration refers to coordinating and rolling out configurations and deployments without manual intervention.
- APIs (Application Programming Interfaces) enable communication between automation tools and network devices.
Real-World Example
- John, a lab expert, uses scripts to deploy entire networks in a few minutes, demonstrating the power of IAC.
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Description
Learn about Infrastructure as Code (IAC) by creating a network with a firewall, demilitarized zone, and load balancer. This quiz covers the basics of IAC and network infrastructure.
