304-200 LPIC-3 Virtualization & High Availability v2.0 Practice Questions

The hypervisor may provide fine-grained limits to internal elements of the guest operating system such as the number of processes.

Full virtualization cannot pose any limits to virtual machines and always assigns the host system's resources in a first-come-first-serve manner.

It is up to the virtual machine to use its assigned hardware resources and create, for example, an arbitrary amount of network sockets.

The hypervisor provides each virtual machine with hardware of a defined capacity that limits the resources of the virtual machine.

All processes created within the virtual machines are transparently and equally scheduled in the host system for CPU and I/O usage.

Emulation can only provide distinct hardware components but no complete virtual machines.

Emulation requires changes to the guest operating system.

Emulation reimplements a whole computing system in software.

Emulation allows operating systems to be run on foreign architectures.

Emulation is one of the most resource efficientvirtualization techniques.

In its Makefile, when Xen is built.

In the configuration file /etc/xen/Domain-O.cfg, when Xen starts.

In the bootloader configuration, when Xen is booted.

In its .config file, when the Domain-0 kernel is built.

In any of Xen's global configuration files.

ccmd

crmd

fencer

pengine

keepalived

block-attach, xl cd-insert, cd-eject, xl cd-eject, cd-insert, xl block-attach, block-detach, xl block-detach

Centos is the domain which has consumed the most CPU time.

The domain with ID 2 uses paravirtualization.

Both Debian and Slack require xl commands to start running.

Slack is idle orwaiting for I/O.