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NOS 230 WEEK 1 Questions And Answers With Verified Study Set
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NOS 230 WEEK 1 Questions And Answers With Verified Study Set
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NOS 230 WEEK 1 Questions And Answers WithVerified Study Set
a high-speed network with the sole purpose of providing storage to other attached servers
A storage array that is accessed by one or more servers on a server rack.
Most racks also contain one or more storage area network (SAN) devices, which provide a large amount of hard
disk or solid-state disk (SSD) storage for the servers within the rack, as well as one or more uninterruptible power
supply (UPS) devices, which provide backup battery power to servers and SANs within the rack in the event of a
power loss. ANS storage area network (SAN)
a device that contains surge protection circuits and one or more batteries that can provide power during a
temporary or permanent loss of power ANS uninterruptible power supply (UPS)
A rackmount server with a height of 1.75 inches. Larger rackmount servers have a height that is a multiple of a 1U
server.
Most 1U servers have up to two hard drives (or SSDs) and up to two processors. Other rackmount servers take up
more than one spot on the rack and have a height that is a multiple of a 1U server. ANS 1U servers
a 2U server is twice as high as a 1U server and often contains up to four processors and eight hard disks (or SSDs).
Rackmount servers rarely exceed 4U, but SAN devices are often 4U or more. ANS 2U Servers
Server design which is modular, allowing systems to be rapidly expanded and reducing power consumption.
A server that can be housed within a single rackmount server. ANS blade servers
a virtualization technology. type 2 hypervisors run as software within a host operating system. The microsoft Hyper-
V hypervisor runs within a microsoft operating system to host VMs ANS Type 2 hypervisors
installed directly onto the computer and manages access to the host hardware without going through a host OS
, A hypervisor that runs directly on computer hardware.
Microsoft Hyper-V is a Type 1 hypervisor. Other common Type 1 hypervisors used today include VMWare ESX/ESXi
and Linux KVM. ANS Type 1 Hypervisor (bare metal)
Allocates the amount of disk space required when the virtual disk is created
The process of using a virtual hard disk file that has a fixed size. ANS thick provisioning
A technique used by Storage Spaces in Windows whereby virtual storage free space can be configured as if it has
more virtual storage than the physical storage allotted to it. When the virtual storage free space is close to
depletion, the administrator is prompted to install more physical storage.
The process of using a virtual hard disk file that dynamically expands as needed up to a maximum size.
Thin provisioning is often preferred for server virtualization as it conserves space on the underlying server storage
hardware. ANS thin provisioning
Hyper-V virtual hard disk files have a .vhdx extension, VMWare virtual hard disk files have a .vmdk extension, Oracle
VirtualBox virtual hard disks have a .vdi extension, and KVM virtual hard disks have either a .qcow2 extension or
omit the extension altogether. ANS Hard disk file extensions for virtualization
A Hyper-V virtual machine that emulates older hardware. ANS Generation 1 virtual machine
A Hyper-V virtual machine that emulates newer hardware and performs faster than a Generation 1 virtual machine.
ANS Generation 2 virtual machine
Hyper-V also supports virtual machine checkpoints (often called snapshots in other hypervisors). If you take a
checkpoint of a virtual machine, it creates a second virtual hard disk file that stores any changes to the operating
system after the time the checkpoint was taken. This is useful before testing a risky software configuration; if the
software configuration fails, the checkpoint can be used to roll back the operating system to the state in which it
was before the software configuration was applied. ANS Hyper-V checkpoints or snapshots
A feature of Hyper-V that allows you to run virtual machines within other virtual machines.
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