cloud

A company develops warehouse management software with a core component and customer-specific modules. To minimize costs, which deployment model is most suitable?

What is the primary characteristic of Common-Off-The-Shelf (COTS) hardware?

A company wants to deploy its application using containers for better resource utilization and faster deployment. Which infrastructure setup would be the MOST appropriate?

A company wants to improve its disaster recovery strategy. Which cloud deployment model would be best suited for creating a highly available and fault-tolerant system?

A company is deciding between using virtual machines (VMs) and containers for deploying its applications. Which of the following scenarios would make containers a more suitable choice than VMs?

Which task is NOT a typical responsibility of Kubernetes kubelet?

Why is a Kubernetes Service crucial for application deployment?

What is the main role of the Kubernetes scheduler in resource management?

When should Secrets be utilized in Kubernetes?

How does a ReplicaSet contribute to maintaining application availability?

Which of the following methods is used to emulate instructions that trigger a trap in a virtualized environment?

What is the typical characteristic of modern CPUs regarding the execution of OS kernels?

In the context of virtualization, what does dynamic binary translation primarily refer to?

In a virtualized system, what is the primary function of VMEntry and VMExit instructions?

Regarding I/O device emulation, what is a typical characteristic of a hypervisor?

What type of drivers are typically included in the image (ISO) of a modern operating system intended for use in a virtual machine?

What is the primary function of Libvirt?

In Linux, how do QEMU and KVM relate in terms of their execution context?

When implementing hot migration of a VM to another server, what states must be moved?

In computing virtualization, what defines a 'sensitive instruction'?

Under what condition can an instruction executed at CPU ring 0 in VMX non-root mode generate a trap?

How does a CPU that supports VMX root/non-root modes improve efficiency in virtualization?

When Trap-And-Emulate is used for a system call invoked by a userland program, what sequence of transitions occurs?

In computing virtualization, what does direct assignment of I/O devices imply?

How does a GuestOS typically detect devices during boot in a virtualized environment?

What information is crucial for a successful hot migration of a VM to another server?

What is the primary function of the Trap-And-Emulate approach in computing virtualization?

How does CPU para-virtualization primarily work?

For what purpose is a 'ClusterIP' service most commonly used in Kubernetes?

What is a key characteristic of CPU rings in modern CPUs regarding operating system kernels?

What is the primary function of an Ingress controller in Kubernetes?

To what instructions can dynamic binary translation refer in the context of virtualization?

Which Kubernetes service type should you choose if you need to create a service that is only accessible from inside the cluster?

What is the key functionality provided by VMEntry and VMExit instructions in a virtualized system?

When using a command like htop inside a Docker container to view available resources, what information is typically displayed?

Why is a Kubernetes Service (e.g., ClusterIP) preferred over directly routing traffic to a pod's IP address?

How does a hypervisor typically handle the emulation of physical devices in computing virtualization?

What is the primary purpose of a Dockerfile?

What types of drivers are typically included in a modern operating system image used to start a VM?

Theoretically, how do the memory requirements compare for an application running on bare metal, in a VM, and in a Docker container?

In Kubernetes, what is the typical use case for a 'DaemonSet'?

Consider an e-commerce site deployed in a Kubernetes cluster using a 'ClusterIP' service for the web frontend. What can be said about its reachability from the internet?

Theoretically, assuming no layered filesystem advantages, how do the disk requirements compare for an application running on bare metal, in a VM, and in a Docker container?

What is the primary purpose of Libvirt in virtualization management?

What is the primary role of the 'control loop' concept in Kubernetes?

Under what circumstance will a sensitive instruction NOT generate a trap when executed?

Which platform is most suitable for creating a web server that can effortlessly scale to handle unpredictable traffic spikes?

In Linux-based virtualization, where do QEMU and KVM operate?

What is the main role of a hypervisor in a virtualized environment?

Which of the following capabilities typically requires a service mesh, rather than being provided by a standard Kubernetes service?

What is the purpose of a Custom Resource in Kubernetes?

Which component is responsible for emulating privileged CPU instructions when they are executed at the wrong privilege level in a virtualized environment?

What action does CPU para-virtualization take to optimize the guest operating system's performance?

What is the function of the Virtual Machine Control Structure (VMCS) in hardware-assisted virtualization?

A university with campuses in different countries needs to set up real-time videoconferencing. Which is the BEST option?

If you connect a set of VMs/Dockers to a software bridge, what can you guarantee regarding network connectivity?

Which tool is most commonly used to connect to a remote server from the management host using a secure, encrypted connection?

If a Docker container attempts to modify its filesystem by writing a file, where is the file stored?

What is the primary consideration when selecting servers for a new datacenter?

How many CPU rings are typically allocated for executing OS kernels in modern CPUs?

Which type of hypervisor runs directly on bare metal, offering better performance by directly managing hardware resources?

You are setting up a database-as-a-service from a cloud provider in 'high-availability' for an e-commerce site. Which deployment strategy is most appropriate?

What type of instructions can dynamic binary translation apply to?

In a Docker layered filesystem, when is a new layer created?

What functionality do VMEntry and VMExit instructions facilitate in a virtualized system?

A Docker container is running on a server with 2 CPUs (52 cores each) and 512 GB RAM. How can this container utilize the underlying compute resources?

What is the primary disadvantage of using Dynamic Binary Translation (DBT) in virtualization?

When deploying an application like an e-commerce site on a public cloud cluster, what is your responsibility regarding service reliability?

Which virtualization technique, pioneered by VMware, translates non-virtualizable x86 instructions at runtime to enable virtualization on standard hardware?

In what scenarios is deploying cloud computing technologies at the edge of the network particularly beneficial?

The University IT manager wants to move to cloud. The main goal is to be future proof and cost effective at the same time. Which is the best approach?

What is a key characteristic of technologies for computing virtualization regarding isolation?

Which technique optimizes memory usage in virtual machines by dynamically adjusting the amount of memory allocated based on the VM's current demand?

A company runs an application that needs to store files. Some files are accessed every second, while others are only accessed every year. How would optimize costs?

A developer is encountering issues with their application failing due to insufficient memory. How can they monitor how much memory is actually used by the application?

Which virtualization technique allows a guest OS to run without modification by virtualizing all hardware interfaces?

How is the filesystem within a Docker container initially related to the filesystem of the host machine?

A Docker is running on a server that has 2 CPUs with 52 cores each. How many cores are available for this Docker?

What is a key advantage of using hardware-assisted virtualization (HVM)?

Which of the following is a valid use for Kubernetes?

Which feature allows the hypervisor to share a single physical I/O device among multiple VMs, enhancing I/O performance and resource utilization?

A Docker container is running on a server with two CPUs, each having 52 cores. An application within the Docker container attempts to maximize performance by creating a thread for each available CPU core. How many threads will the application create?

What does the Extended Page Table (EPT) feature in Intel processors primarily aim to improve in a virtualized environment?

In which virtualization technique does the guest OS need to be modified to work effectively with the hypervisor?

What is required for a virtual machine (VM) running in OpenStack to be reachable from a customer connected to the Internet?

A pod, along with its associated service, runs in a Kubernetes datacenter and is exposed to the outside world through an Ingress controller. When a client on the Internet establishes a TCP connection to this pod/service, what happens with the network packets?

What is the primary role of cgroups in Linux?

In a service mesh architecture, what addition is typically made to each microservice to integrate it into the mesh?

Which of the following features is NOT provided by Linux cgroups?

When setting up servers in a new datacenter, what is the most common approach to selecting hardware?

An e-commerce site utilizes a database-as-a-service from a cloud provider and needs to run in 'high-availability' mode. Which setup would you choose?

When deploying an application on a cluster in a public cloud and aiming for a reliable service, what is the most accurate consideration?

In what scenarios is the deployment of cloud computing technologies at the edge of the network most beneficial?

When is computing virtualization most applicable?

How does the filesystem in a Docker container relate to the filesystem on the host machine?

When Linux leverages the KVM hypervisor, what are the ring levels at which QEMU and the GuestOS operate?

A Docker container is running on a server with 2 CPUs (52 cores each). If, inside the Docker, we execute an application that maximizes its performance by creating a number of threads equal to the number of CPU cores available, it will create the following number of threads:

What is primarily needed for a VM in OpenStack to be reachable from the Internet?

In computing virtualization, which statement best characterizes a 'sensitive instruction'?

When Trap-And-Emulate is used to handle a system call invoked by a userland program within a VM, what sequence of transitions is typically observed?

A pod (and it associated service) is running in a Kubernetes datacenter and is reachable from the outside world through an Ingress controller. When a client (on the Internet) establishes a TCP connection toward the pod/service:

What constitutes the state of a VM that is essential for enabling a hot migration?

In a service mesh, how is each micro-service typically augmented to participate in the mesh?

Under what conditions will an instruction executed at CPU ring 0 (VMX non-root mode) generate a trap?

In computing virtualization, what best describes the use of the Trap-And-Emulate approach?

How does a CPU that supports VMX root/non-root modes improve system call processing?

In computing virtualization, what does 'direct assignment for I/O devices' signify?

When a GuestOS boots in a virtualized environment, what type of devices does it typically detect?

How does a VIRTIO driver running in a GuestOS primarily interact with the host system to send and receive data?

In Linux, what is the primary function of tools like virsh and virt-manager?

What does the term 'nested virtualization' refer to?

Which of the following statements best describes a Virtual Machine Monitor (VMM)?

What is the primary purpose of the management host?

Which of the following is a challenge with the x86 architecture in virtualization?

When the Trap-And-Emulate is used to handle a userland program invoking a system call, what sequence of transitions is typically observed?

In a typical virtualized environment, what type of device drivers are predominantly included within the GuestOS kernel?

Libvirt's primary function is to:

In the Linux operating system, how do QEMU and KVM interact in a virtualized environment?

What specific condition triggers the Trap-And-Emulate approach in computing virtualization?

A hot migration of a virtual machine from one server to another necessitates the transfer of:

In a virtualized setting, what is the role of VMEntry and VMExit instructions?

How does Docker networking compare to traditional virtualized networking environments?

If a Docker container, Docker1, needs to connect to another Docker container, Docker2, running on a different server, what network address and port should Docker1 use?

What network components are typically included in the standard network created by Docker on a server?

How does a Docker container obtain its IP address within the Docker network?

If Docker1 and Docker2 are running on the same server, how does Docker1 establish a network connection to Docker2?

What happens if an instruction, executed at CPU ring 0 in VMX non-root mode, is either sensitive or privileged?

How does a CPU that supports VMX root/non-root modes improve virtualization efficiency?

In computing virtualization, what does the term 'direct assignment' refer to regarding I/O devices?

When a GuestOS boots within a virtualized environment, what kind of hardware devices does it typically detect?

How does Libvirt enhance the management of virtual machines?

In the Linux environment, how do QEMU and KVM interact regarding their execution space?

What is the minimal state that must be moved during a hot migration of a virtual machine to ensure continuous operation?

When a CPU executes an instruction at ring 0 in VMX non-root mode, under what circumstances will a trap be generated?

How does a CPU that supports VMX root/non-root modes improve the handling of privileged instructions?

In computing virtualization, what does direct assignment for I/O devices imply regarding device control?

How does a VIRTIO driver within a GuestOS primarily communicate with its counterpart backend driver?

In Linux, what primary function do tools like virsh and virt-manager serve in the context of virtualization?

When leveraging KVM in Linux, at which CPU ring levels do QEMU and the GuestOS operate?

In computing virtualization, what is the primary characteristic of a 'sensitive instruction'?

When Trap-And-Emulate is used for a system call invoked by a program in userland, what sequence of transitions occurs?

To implement a hot migration successfully, what information about the VM's state is essential?

What is the main mechanism involved in CPU para-virtualization?

How are CPU rings structured in modern CPUs, particularly concerning OS kernel execution?