Session Review

Question 1 (102.6-008 / multiple_choice)

What characterizes a paravirtualized guest?

Status: Unanswered

Your Answer:

Options:

• It is unaware that it is virtualized
• It uses the host bootloader directly
• It is aware that it is virtualized and uses a modified kernel and guest drivers
• It cannot access storage snapshots

Explanation:
A paravirtualized guest is aware it is virtualized and uses a modified kernel plus special guest drivers [1].

Question 2 (102.6-013 / multiple_choice)

Which tool is recommended as a graphical front-end for managing KVM virtual machines?

Status: Unanswered

Your Answer:

Options:

• virt-manager
• virt-viewer
• vmstat
• systemd-nspawn

Explanation:
The material recommends installing virt-manager as a graphical front-end for KVM installations [1].

Question 3 (102.6-009 / multiple_choice)

For a mission-critical server installation requiring the fastest performance, what type of virtualization is likely preferred according to the material?

Status: Unanswered

Your Answer:

Options:

• Application container
• Full virtualization only
• Paravirtualization
• Nested virtualization

Explanation:
The answers section states that a mission-critical server needing the fastest performance will likely use paravirtualization [1].

Question 4 (102.6-015 / multiple_choice)

Which Linux kernel feature do containers use to partition resources such as memory, CPU time, and bandwidth?

Status: Unanswered

Your Answer:

Options:

• SELinux contexts
• cgroups
• udev rules
• sysctl

Explanation:
Containers make use of control groups, or cgroups, to partition system resources [1].

Question 5 (102.6-003 / multiple_choice)

Which of the following is described as an open source Type-1 hypervisor?

Status: Unanswered

Your Answer:

Options:

• Docker
• KVM
• Xen
• LXC

Explanation:
The material describes Xen as an open source Type-1 hypervisor [1].

Question 6 (102.6-019 / short_answer)

What tool helps configure and deploy virtual machines and containers in cloud environments?

Status: Unanswered

Your Answer:

Accepted Answer(s):
cloud-init

Explanation:
The summary identifies cloud-init as the tool used to aid in configuration and deployment in cloud environments [1].

Question 7 (102.6-014 / multiple_choice)

Which command-line tool can be used to create a new virtual machine instead of using virt-manager?

Status: Unanswered

Your Answer:

Options:

• virt-install
• vm-create
• kvm-build
• hypervisorctl

Explanation:
The lesson states that a virtual machine can also be created from the command line using virt-install [1].

Question 8 (102.6-001 / multiple_choice)

What is virtualization?

Status: Unanswered

Your Answer:

Options:

• A method for compiling kernels faster
• A technology that allows a hypervisor to run processes containing fully emulated computer systems
• A package management method for containers
• A method for encrypting disk partitions

Explanation:
Virtualization allows a software platform called a hypervisor to run processes that contain a fully emulated computer system [1].

Question 9 (102.6-007 / multiple_choice)

What characterizes a fully virtualized guest?

Status: Unanswered

Your Answer:

Options:

• It is aware it is virtualized and uses guest drivers
• It is unaware that it is running as a virtual machine
• It can only run on Xen
• It shares the host kernel directly

Explanation:
A fully virtualized guest is unaware that it is a running virtual machine instance [1].

Question 10 (102.6-017 / short_answer)

Which CPU extensions are needed on x86 hardware for fully virtualized guests?

Status: Unanswered

Your Answer:

Accepted Answer(s):
VT-x or AMD-V
Intel VT-x or AMD-V
VT-x for Intel or AMD-V for AMD

Explanation:
Fully virtualized guests on x86 require Intel VT-x or AMD-V CPU extensions [1].