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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: VM Deployment and Provisioning | 12% | - Packer - Vagrant - cloud-init - Cloud Management Tools |
| Topic 2: Full Virtualization | 25% | - Xen - Virtualization Concepts and Theory - Virtual Machine Disk Image Management - Libvirt Virtual Machine Management - QEMU |
| Topic 3: Container Virtualization | 25% | - Docker - Container Orchestration Platforms - LXC - Container Virtualization Concepts |
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質問 # 102
What is the name of the kernel module that is required to be loaded in order to use KVM on an Intel CPU architecture?
(Specify ONLY the module name without any path information and with or without the module suffix.) Solution:
kvm-intel.ko - or - kvm-intel - or - kvm_intel.ko - or - kvm_intel
Determine whether the given solution is correct?
正解：B
解説：
Kernel-based Virtual Machine (KVM) relies on hardware-assisted virtualization features provided by modern CPUs. OnIntel CPU architectures, this support is enabled through thekvm_intelkernel module. Official KVM and Linux virtualization documentation clearly states that the required module for Intel processors is namedkvm_intel, with the optional .ko suffix when referring to the kernel object file.
The provided solution lists multiple acceptable representations of the module name, includingkvm_inteland kvm_intel.ko, both of which are valid and correct. Linux kernel module naming conventions allow the module to be referenced with or without the .ko suffix when loading it using tools such as modprobe or lsmod.
Although variants using a hyphen (kvm-intel) are not the canonical kernel module name, the solution explicitly includes the correct and documented module name. Therefore, the solutioncorrectly identifies the required kernel modulefor enabling KVM on Intel CPUs.
Virtualization documentation emphasizes that KVM functionality requires both the generic kvm module and the CPU-specific module (kvm_intel for Intel or kvm_amd for AMD). Hence, the determination that the solution iscorrectaligns with verified documentation.
質問 # 103
When using Packer to create machine images, what are some common sources for base images? (Select all that apply)
正解：C、D
解説：
Packer is an image automation tool used to create identical machine images for multiple platforms from a single configuration. According to virtualization and containerization documentation, Packer typically uses trusted and standardized base imagesas the starting point for image creation. The most common sources includeofficial operating system imagesprovided by vendors such as Red Hat, Ubuntu, or cloud service providers, andcustom images created internally by an organization.
Using official images ensures that the base system is secure, properly maintained, and compliant with vendor standards. Organizations often build custom base images to enforce internal security policies, hardening standards, and preinstalled software, which Packer then extends into environment-specific images.
Physical servers are not considered common or practical base sources for Packer, as Packer operates on machine image artifacts rather than cloning live hardware systems. Images from untrusted sources are explicitly discouraged in virtualization documentation due to security and compliance risks.
Therefore, documentation clearly supportscustom organizational imagesandofficial operating system imagesas the correct and recommended base sources for Packer image creation.
質問 # 104
Ifdocker stackis to be used to run a Docker Compose file on a Docker Swarm, how are the images referenced in the Docker Compose configuration made available on the Swarm nodes?
正解：A
質問 # 105
Which of the following statements are true for full virtualization? (Choose TWO correct answers)
正解：A、D
解説：
Full virtualization is a virtualization approach where the hypervisor provides a complete simulation of the underlying hardware, allowingunmodified guest operating systemsto run without awareness of virtualization. Virtualization documentation consistently states that one of the defining characteristics of full virtualization is thatguest operating systems do not need to be modified, making optionCcorrect.
Additionally, modern full virtualization platforms benefit fromhardware-assisted virtualization, such as Intel VT-x and AMD-V CPU extensions. These extensions significantly improve performance by offloading virtualization tasks to the processor, making optionBcorrect.
Option A is incorrect because Linux-based hypervisors like KVM can perform full virtualization entirely within the Linux ecosystem. Option D is false because all virtualization introduces some performance overhead, even if minimal. Option E is incorrect because full virtualization is widely used in production environments, including enterprise data centers and cloud platforms.
Therefore, based on virtualization principles and documentation, the correct answers areB and C.
質問 # 106
Virtualization of which hardware component is facilitated by CPUs supporting nested page table extensions, such as Intel Extended Page Table (EPT) or AMD Rapid Virtualization Indexing (RVI)?
正解：E
解説：
Explanation
Nested page table extensions, such as Intel Extended Page Table (EPT) or AMD Rapid Virtualization Indexing (RVI), are hardware features that facilitate the virtualization of memory. They allow the CPU to perform the translation of guest virtual addresses to host physical addresses in a single step, without the need for software-managed shadow page tables. This reduces the overhead and complexity of memory management for virtual machines, and improves their performance and isolation. Nested page table extensions do not directly affect the virtualization of other hardware components, such as network interfaces, host bus adapters, hard disks, or IO cache.
References:
* Second Level Address Translation - Wikipedia
* c - What is use of extended page table? - Stack Overflow
* Hypervisor From Scratch - Part 4: Address Translation Using Extended ...
質問 # 107
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