Ch9 Flashcards
What is virtualization?
Virtualization enables a single computer to host multiple independent virtual computers called virtual machines (VM) that share the host computer hardware.
Virtualization software separates the actual physical hardware from the VM instances.
What is the role of virtualization software?
Virtualization software separates the actual physical hardware from the VM instances and allows for the saving and restarting of VM images.
It plays a crucial role in both virtualization and cloud computing.
What are the disadvantages of traditional server deployment?
Disadvantages include:
* Wasted resources
* Single-point of failure
* Server sprawl
Traditional deployment relies on dedicated servers, which can lead to inefficiencies.
What is server virtualization?
Server virtualization takes advantage of idle resources to reduce the number of servers required, managed by a hypervisor.
Each VM runs a complete and separate operating system.
What are the advantages of server virtualization?
Advantages include:
* Better use of resources
* Less space required
* Less energy consumed
* Reduced cost
* Faster server provisioning
* Maximize server uptime
* Improved disaster recovery
* Support for legacy systems
What is client-side virtualization?
Client-side virtualization enables users to run VMs on their local computer for testing new operating systems or software.
It includes a host computer, host OS, and guest OS.
What is a Type 1 hypervisor?
A Type 1 hypervisor runs directly on the hardware of a host and manages the allocation of system resources to VMs.
Examples include VMware vSphere/ESXi, Xen, and Oracle VM Server.
What is a Type 2 hypervisor?
A Type 2 hypervisor works with the host computer to create and use multiple VMs.
Examples include VMware Workstation and Oracle VirtualBox.
What are the Windows Hyper-V requirements for Windows 10?
Requirements include:
* Host OS: Windows 10 Pro or Windows Server (2012 and 2016)
* Processor: 64-bit CPU with SLAT
* BIOS: Support for VM Monitor Mode Extension
* Memory: Minimum 4GB RAM
* Hard Disk Space: At least 15GB per VM
What are the Windows Hyper-V requirements for Windows 11?
Requirements include:
* Host OS: Windows 11 Home or Pro
* Processor: 1 GHz or faster with two or more cores
* BIOS: UEFI, Secure Boot capable, TPM 2.0
* Memory: At least 4GB RAM
* Hard Disk Space: At least 10GB per Virtual OS
* Graphics: DirectX 12 compatible
How does cloud computing provide services?
Cloud computing provides on-demand delivery of computing services over the Internet, owned and hosted by service providers.
Users typically pay based on access and usage.
What are the main types of cloud services?
Main types include:
* Software as a Service (SaaS)
* Platform as a Service (PaaS)
* Infrastructure as a Service (IaaS)
* IT as a Service (ITaaS)
What are the characteristics of cloud computing?
Characteristics include:
* On-demand (self-service)
* Rapid elasticity
* Resource pooling
* Measured and metered service
* Broad network access
What is software-defined networking (SDN)?
SDN is a network architecture that allows for efficient elasticity in the cloud through rapid provisioning and deprovisioning of services using scripting.
It consists of three layers: application, control, and infrastructure.
What are the APIs used in SDN?
The APIs include:
* Northbound API (between SDN controller and application layer)
* Southbound API (between SDN controller and infrastructure layer)
True or False: SD-WAN technology simplifies an organization’s network architecture.
True
Fill in the blank: Cloud computing services are owned and hosted by _______.
[service providers]
