220-1202 Virtualization and Cloud Technologies — Timed 10 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.