220-1102 Virtualization and Cloud Technologies — Timed 20 Questions

Question 1

A small business wants to migrate its on-premises file server to the cloud to reduce hardware maintenance costs. They need low-latency access for local employees and want to avoid egress fees for large data transfers. Which cloud deployment model best meets these requirements?

Accepted Answer

Hybrid cloud. A hybrid cloud combines private and public cloud resources, allowing sensitive or frequently accessed data to remain on-premises (private cloud) while using public cloud for scalability and backup. This reduces latency for local users and minimizes egress fees for large data transfers. Public cloud alone would introduce latency and egress costs; community cloud is for shared organizations; private cloud alone doesn't leverage cloud scalability.

Answer

Public cloud

Answer

Private cloud

Answer

Community cloud

Question 2

A company uses a cloud-based SaaS application for customer relationship management (CRM). Several employees report that they cannot access the CRM this morning, but internet connectivity is working. The IT support team checks the cloud provider's status page and finds no reported outages. What should the technician check next?

Accepted Answer

Check if the users' accounts have expired or if passwords need to be reset.. When a cloud service is accessible to some but not others, the issue is often local authentication or configuration. Expired credentials or browser cache problems are common causes. The cloud provider's status page shows no outage, so the issue is likely client-side. DNS and firewall settings would affect all users if misconfigured.

Answer

Verify that the DNS server is resolving the CRM URL correctly.

Answer

Reboot the company's firewall to clear any temporary blocks.

Answer

Reinstall the CRM application on the affected workstations.

Question 3

A technician is tasked with deploying a virtual machine for a new employee. The VM will run a Linux distribution and needs to be isolated from the corporate network but still have internet access for updates. Which network configuration should the technician choose for the VM?

Accepted Answer

NAT (Network Address Translation). NAT (Network Address Translation) allows the VM to access the internet using the host's IP address while keeping it separate from the host's local network. Bridged mode would give the VM its own IP on the corporate network, violating isolation. Host-only mode blocks internet access. Internal network would also block internet access.

Answer

Bridged networking

Answer

Host-only networking

Answer

Internal networking

Question 4

A user reports that their virtual machine running on a Type 2 hypervisor is extremely slow, especially during disk operations. The host machine has 16 GB of RAM and an SSD, but the VM is configured with 2 GB of RAM and a 100 GB dynamically expanding virtual hard disk. What is the most likely cause of the performance issue?

Accepted Answer

The virtual hard disk type is dynamically expanding.. Dynamically expanding virtual hard disks can cause performance degradation because they grow as data is written, leading to fragmentation and increased I/O overhead. Fixed-size virtual hard disks pre-allocate space, reducing fragmentation and improving disk performance. The RAM and CPU configuration are not directly related to the disk slowness described.

Answer

The VM has insufficient RAM allocated.

Answer

The host is running out of physical memory.

Answer

The VM is using an older version of the virtualization software.

Question 5

A technician is configuring a cloud-based backup solution for a company's critical data. The company wants to ensure that if the primary cloud provider experiences an outage, the data remains accessible from another provider. Which concept should the technician implement?

Accepted Answer

Cloud federation. Cloud federation allows different cloud providers to share resources and data, enabling failover and redundancy. This ensures data accessibility even if one provider goes down. High availability is a general concept, not specific to multi-provider redundancy. Load balancing distributes traffic but does not guarantee data access during a provider outage. Disaster recovery is a broader plan, but federation is the specific technology for inter-provider failover.

Answer

High availability

Answer

Load balancing

Answer

Disaster recovery plan

Question 6

A technician needs to create a virtual machine that will host a legacy application requiring Windows XP. The host runs Windows 11. After creating the VM and installing Windows XP, the technician notices that the mouse cursor is lagging and the screen resolution is stuck at 800x600. What should the technician do to resolve this?

Accepted Answer

Install the guest additions for the VM.. Guest additions (or integration services) contain optimized drivers for the virtual hardware, including mouse and display drivers. Without them, the VM uses basic VGA drivers, limiting resolution and causing input lag. Updating the host OS or increasing RAM won't fix driver issues. Changing the network adapter type is unrelated to display and input problems.

Answer

Increase the amount of RAM allocated to the VM.

Answer

Update the host operating system to the latest version.

Answer

Change the VM's network adapter from NAT to bridged.

Question 7

A company is considering moving its email system from an on-premises Exchange server to a cloud-based solution. Which cloud service model would best fit this migration?

Accepted Answer

SaaS (Software as a Service). SaaS (Software as a Service) provides ready-to-use applications like email (e.g., Office 365, Gmail) without managing the underlying infrastructure. IaaS would require the company to still manage the email server software. PaaS is for application development, not end-user applications. DaaS is for desktop virtualization.

Answer

IaaS (Infrastructure as a Service)

Answer

PaaS (Platform as a Service)

Answer

DaaS (Desktop as a Service)

Question 8

A user complains that their virtual machine, which was working fine yesterday, now displays a 'Blue Screen of Death' (BSOD) on startup. The VM is running Windows 10 and is stored on a shared network drive. The host machine is a Windows Server with plenty of resources. What is the most likely cause of this issue?

Accepted Answer

The virtual hard disk file became corrupted due to a network error during the last write operation.. A BSOD on VM startup often indicates a corrupted system file or disk issue. Since the VM is stored on a network drive, a network interruption during the last shutdown could have corrupted the virtual hard disk. Insufficient host resources or an outdated hypervisor would typically cause performance issues or failure to start, not a BSOD. Guest additions issues might cause driver problems but are less likely to cause a BSOD on boot.

Answer

The host machine ran out of memory while the VM was running.

Answer

The VM's guest additions need to be updated.

Answer

The hypervisor version is incompatible with the VM configuration.

Question 9

A user reports that their virtual machine, which is used for testing software, suddenly lost network connectivity. The host machine is connected to the internet and can browse websites. The VM is configured with a bridged network adapter. What is the most likely cause of this issue?

Accepted Answer

The VM's DHCP lease has expired and it failed to obtain a new IP address.. In bridged mode, the VM gets its own IP address from the network's DHCP server. If the DHCP lease expired and the VM cannot renew it, connectivity is lost. The host's connection is fine, so the issue is specific to the VM's network configuration. A misconfigured firewall on the host would affect all VMs, not just one. The virtual switch is part of the hypervisor and unlikely to fail without affecting other VMs.

Answer

The host's firewall is blocking the VM's network traffic.

Answer

The virtual switch on the host has been disabled.

Answer

The VM's operating system is corrupted.

Question 10

A technician is setting up a virtual machine for a software developer who needs to test an application on multiple operating systems. The host runs Windows 10 Pro with 32 GB of RAM and a quad-core CPU. The developer wants the VM to have direct access to a USB security dongle. Which configuration step is essential to meet this requirement?

Accepted Answer

Enable USB controller passthrough in the VM settings.. USB passthrough allows the VM to access a physical USB device directly, bypassing the host OS. This is essential for security dongles that require low-level access. Enabling virtualization extensions in BIOS is important for performance but not for USB access. Dynamic memory and a fixed-size VHD are unrelated to USB device connectivity.

Answer

Configure the VM to use dynamic memory.

Answer

Enable virtualization extensions (VT-x/AMD-V) in the host BIOS.

Answer

Install the guest additions or integration services in the VM.

Question 11

A technician is deploying a new virtual machine on a Type 1 hypervisor. The VM will run a Linux web server and needs to be isolated from the corporate network except for HTTPS traffic. Which networking configuration should the technician implement?

Accepted Answer

Use a virtual switch set to host-only mode and configure port forwarding for HTTPS. A virtual switch with a host-only or internal network isolates the VM from the corporate LAN, while port forwarding or a NAT rule allows specific inbound HTTPS traffic. This ensures the VM is not directly exposed to the broader network. The question tests understanding of virtual networking and security isolation.

Answer

Bridge the VM directly to the physical network adapter

Answer

Attach the VM to a NAT network without any port forwarding

Answer

Assign the VM an IP from the corporate DHCP scope

Question 12

A technician needs to migrate a physical server running a legacy application to a virtual machine on a Type 2 hypervisor for testing. The application requires direct access to a PCIe USB controller card. Which of the following is the best approach to ensure the application continues to function?

Accepted Answer

Enable PCI passthrough for the USB controller card to the VM. PCI passthrough allows a VM to directly access a physical PCIe device, providing the low-level access required by the legacy application. Type 2 hypervisors often support this for compatible hardware. This tests knowledge of hardware pass-through in virtualization.

Answer

Use a virtual USB controller and map it to the host's USB port

Answer

Install the application directly on the host and share the USB device via network

Answer

Convert the physical server to a VM using P2V and rely on emulated USB

Question 13

A user reports that their cloud-synced files are not appearing on their laptop after a recent OS reinstall. The technician verifies that the cloud storage account is active and the internet connection works. Which of the following is the most likely reason for the missing files?

Accepted Answer

The local sync client is configured for selective sync and not downloading all folders. Cloud storage clients use a local cache to sync files. After an OS reinstall, the client must re-download files from the cloud, but if selective sync is enabled, only certain folders are synced. The user may need to adjust sync settings to restore all files. This tests understanding of cloud storage synchronization behavior.

Answer

The cloud storage provider has deleted the files due to inactivity

Answer

The user's account is not licensed for the cloud service

Answer

The laptop's hard drive is full

Question 14

A user reports that their virtual desktop in a VDI environment is extremely slow during peak hours. The technician checks the host server and sees that memory utilization is at 95% and CPU is at 80%. Which of the following is the most likely cause of the performance issue?

Accepted Answer

The host has insufficient memory for the number of VMs. In a VDI environment, over-provisioning resources like memory leads to resource contention and poor performance. The high memory utilization indicates the host does not have enough physical memory to support all running virtual desktops, causing swapping and slowdowns. This scenario tests understanding of resource allocation in virtualized environments.

Answer

The virtual switch is misconfigured

Answer

The guest OS needs a driver update

Answer

The virtual hard disks are not thin-provisioned

Question 15

A technician is tasked with migrating a physical server running a legacy OS that does not support virtualization drivers. The technician needs to ensure the OS can boot and run in a virtual machine. Which of the following steps is most critical before performing the physical-to-virtual (P2V) conversion?

Accepted Answer

Use a P2V tool that can inject the correct HAL and storage drivers for the hypervisor. Legacy OSes often lack drivers for virtualized hardware, so using a P2V tool that can inject the necessary HAL and storage drivers during conversion is essential. Without this, the VM will likely blue screen on boot. This tests advanced knowledge of P2V migration challenges and driver injection.

Answer

Increase the physical server's RAM before conversion

Answer

Ensure the legacy OS has the latest service pack installed

Answer

Create a full backup of the physical server

Question 16

A company uses a private cloud for its development environment. A developer complains that they cannot deploy a new application because the cloud management portal shows a 'resource quota exceeded' error. The technician checks the cluster and finds that CPU and memory usage are below 50%. What is the most likely cause of the error?

Accepted Answer

The developer's resource allocation quota has been reached. Resource quotas are administrative limits set per user or project, independent of actual cluster utilization. Even with plenty of free resources, a quota can block deployment. This tests understanding of cloud resource management and the difference between quotas and capacity.

Answer

The hypervisor is in maintenance mode

Answer

The storage pool is full

Answer

The virtual switch is not configured for the developer's VLAN

Question 17

A small business wants to migrate its on-premises file server to a cloud service to reduce hardware maintenance costs. The data must be accessible from any device with an internet connection and should support real-time collaboration. Which cloud service model best meets these requirements?

Accepted Answer

Software as a Service (SaaS). SaaS provides ready-to-use software applications over the internet, such as Google Workspace or Microsoft 365, which include file storage and collaboration features. This eliminates the need for the business to manage underlying infrastructure. The scenario tests knowledge of cloud service models: SaaS, PaaS, and IaaS.

Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Desktop as a Service (DaaS)

Question 18

A company's cloud-based CRM application is experiencing intermittent outages. The IT team suspects a distributed denial-of-service (DDoS) attack. Which cloud characteristic is most directly impacted by such an attack?

Accepted Answer

Availability. A DDoS attack floods the service with traffic, making it unavailable to legitimate users, directly impacting availability. Cloud services rely on high availability, but an attack can overwhelm resources. This tests understanding of the five essential characteristics of cloud computing (on-demand self-service, broad network access, resource pooling, rapid elasticity, measured service) and the CIA triad.

Answer

On-demand self-service

Answer

Broad network access

Answer

Resource pooling

Question 19

A technician is troubleshooting a VM that fails to boot with the error 'Operating system not found'. The VM was working yesterday. The technician checks the virtual machine settings and sees that the virtual hard disk is attached to the IDE controller. What should the technician do first?

Accepted Answer

Check the VM's boot order in the BIOS and ensure the virtual hard disk is first. The boot order in the VM's BIOS might be set to boot from a different device (e.g., network or CD-ROM) before the hard disk. Changing the boot order to prioritize the virtual hard disk is the most direct fix. This tests knowledge of VM boot configuration and BIOS settings.

Answer

Reattach the virtual hard disk to the SCSI controller

Answer

Increase the VM's memory allocation

Answer

Restore the VM from a recent snapshot

Question 20

A technician is configuring a hybrid cloud environment where an on-premises application needs to securely access a database hosted in a public cloud. The company requires that all traffic between the two environments be encrypted and not traverse the public internet. Which of the following should the technician implement?

Accepted Answer

Use a dedicated private connection such as AWS Direct Connect. A VPN tunnel creates an encrypted connection over the internet, but to avoid the public internet entirely, a dedicated private connection like AWS Direct Connect or Azure ExpressRoute is needed. However, the question specifies 'not traverse the public internet', so a VPN over the internet would not qualify. The correct answer is a dedicated private connection, which is a service offered by cloud providers. This tests knowledge of hybrid cloud connectivity options.

Answer

Configure a site-to-site VPN over the internet

Answer

Set up a remote desktop gateway

Answer

Deploy a cloud-based load balancer