Unit 2 Flashcards
What is a combination of software applications and an operating system tricked into thinking it has dedicated hardware?
Virtual Machine (VM)
(True/False) Do VMs have a BIOS, hard disk, memory, CPU, and Operating System?
True
________ is the physical computer hardware on which the virtualized environment resides.
Host Server
The __________ or __________ is the link managing communications between the host
server and virtualized environment.
Hypervisor
or
Virtual Machine monitor (VMM)
(True/False) A single virtual environment consists of only one guest OS.
False
(A single virtual environment can have more than one guest OS, as long as the physical machine has enough hardware capacity and memory to host the multiple VMs)
______ virtualization is a method of simulating a user workstation so it can be accessed from
a remotely connected device.
Desktop virtualization
Name the three types of desktop virtualization architectures.
Presentation virtualization
Virtual desktop infrastructure (VDI)
User profile virtualization
What is the most common type of virtualization, partitioning the physical server into smaller virtual servers?
Server Virtualization
Name the three commercial pieces of software that enable server utilization.
VMware (the current industry leader)
Citrix XenServer
Microsoft Hyper-V
What are the three main types of server virtualization?
Operating-system-level Virtualization
Hardware Emulation
Para-virtualization
_____ virtualization allows multiple users to simultaneously access the same application installed on a central server.
Application Virtualization
What type of virtualization is used to pool physical storage from multiple, often separate,
network storage devices into one logical storage device that is centrally controlled?
Storage Virtualization
What are the common applications of virtualization technologies? (6)
- Development and Testing
- Training
- Server Consolidation
- Load Balancing
- Server Pooling
- Disaster Recovery
What type of hypervisor has the virtualization software installed directly on the machine
hardware?
Type 1 Hypervisor
(Bare-metal)
What type of hypervisor is installed onto an operating system?
Type 2 Hypervisor
(Hosted)
What is a disadvantage of a Bare-Metal hypervisor?
limited hardware support
(because the hypervisor usually has limited built-in device drivers)
What is the advantages of a Type 2 hypervisor?
Better hardware compatibility
(OS is responsible for the hardware drivers instead of the hypervisor.)
What are the four main benefits of virtualization?
- Infrastructure simplification
- Reduction in Total Cost of Ownership (TCO)
- Environmental Issues
- Improved Responsiveness
A Total Cost of Ownership (TCO) benefit increases a business’s return on investment (ROI) and is achieved by __________, __________, and _________.
- Increased server utilization
- Decreased management infrastructure costs
- Lowered costs to deploy new environments
(True/False) Server consolidation allows one server to virtually host many once-dedicated servers that may have been underutilized in their stand-alone state.
True
Name the three environmental issues that virtualization addresses.
- Reduce electrical energy consumption
- Decreased cooling requirements
- Decreased physical space requirements
Dynamically allocating resources to workloads is ________ and improves the efficiency and autonomy of resource management.
Automatic load balancing.
What are the six main areas of concern regarding virtualization security?
- Training and education
- Change control
- Asset Tracking and management
- Patch Management
- Authentication and Authorization
- Logging and auditing
What board considers any changes or upgrades to base infrastructure whether physical or virtual?
Change Control and Review Board
Organization should create and maintain detailed inventories of software and hardware. This applies to physical and virtual software and falls under the virtualization security concern of __________ and _________.
Asset Tracking and Management
Define Patch Management
process of identifying and remediating security vulnerabilities in software by installing updates
What shared operating system makes use of container-based virtualization and allows
applications on the same server to share the kernel?
host operating system
What are the logical partitions used to separate applications on the same server?
Containers
The main factors limiting the number of virtual machines (VMs) that a host can support are
________ and _________.
Processing power (CPU) and memory (RAM)
What is the minimum RAM requirement for one virtual Microsoft Server 2019?
512MB
(Megabytes)
What is the minimum HDD storage space requirement for Microsoft Server 2019?
32GB
(Gigabytes)
What is the minimum amount of NICs required to operate a host server?
2 NICs
What is the recommended amount of NICs required for optimal host server performance?
4 NICs
(True/False) For host servers without on-board graphics processing units (GPUs), an adapter card will be required to be installed on the motherboard utilizing the PCI Express slot.
True
