220-1101 Practice Test 42 — 15 Questions

Question 1

Match each command to its function in Windows.

Accepted Answer

ping: Tests connectivity to a remote host. The correct matches are: ping tests connectivity, tracert traces the route, ipconfig displays IP configuration, and netstat shows network connections. Common confusions involve swapping ping with ipconfig or tracert with ipconfig.

Answer

ping: Displays IP configuration

Answer

ipconfig: Traces the route to a destination

Question 2

Match each cloud service model to its description.

Accepted Answer

IaaS: Provides virtualized computing resources over the internet. Cloud service models categorize the level of abstraction: IaaS provides raw infrastructure, PaaS adds development platforms, SaaS delivers applications, and FaaS offers serverless compute.

Answer

IaaS: Provides software applications over the internet

Answer

PaaS: Provides virtualized computing resources

Question 3

A technician is setting up a small office network. The ISP provides a modem with a single Ethernet port. The office has 10 computers that all need to share the single public IP address to access the internet. Which of the following devices should the technician connect directly to the modem to allow all computers to access the internet?

Accepted Answer

Router. A router is required to perform Network Address Translation (NAT), which allows multiple devices on a local network to share a single public IP address provided by the ISP's modem. The router connects directly to the modem's Ethernet port and then distributes private IP addresses (e.g., 192.168.x.x) to the 10 computers, translating their outbound traffic to the single public IP. A switch or hub alone cannot perform NAT and would not enable internet sharing without a router.

Answer

Switch

Answer

Hub

Answer

Bridge

Question 4

A company hosts a web application on a public cloud IaaS platform. The application experiences unpredictable traffic spikes. The cloud platform automatically adds virtual machines when CPU usage exceeds 80% and removes them when usage drops below 30%. The IT team does not need to manually approve the additions or removals. Which essential cloud characteristic does this BEST describe?

Accepted Answer

Rapid elasticity. The scenario describes the cloud platform automatically adding and removing virtual machines based on CPU utilization thresholds (80% and 30%) without manual intervention. This is the defining behavior of rapid elasticity, which allows resources to scale out and in automatically to match demand. Unlike on-demand self-service, which focuses on user-initiated provisioning, rapid elasticity emphasizes the system's ability to dynamically adjust capacity without requiring human action.

Answer

On-demand self-service

Answer

Resource pooling

Answer

Measured service

Question 5

A user's Android smartphone recently got a swollen battery and feels warm to the touch even when not in use. The technician checks the battery health using the built-in diagnostic tool, which reports 'Good'. The user mentions the phone was dropped onto a hardwood floor a few days ago. Which of the following is the MOST likely cause?

Accepted Answer

B. The swollen battery and heat generation indicate a physical battery failure, likely caused by internal damage from the drop. The built-in diagnostic tool reports 'Good' because it typically checks electrical parameters (voltage, charge cycles) rather than physical deformation or internal shorts. The drop likely compromised the battery's separator, leading to a thermal runaway risk regardless of software-reported health.

Answer

A

Answer

C

Answer

D

Question 6

A company needs to run a legacy application that requires a specific version of a Linux kernel that is not supported by the current physical server's hardware. The IT team wants to use virtualization to run this application on the existing server. Which virtualization technology would BEST allow this?

Accepted Answer

Full virtualization. Full virtualization allows a guest operating system to run unmodified on top of a hypervisor by abstracting the underlying hardware completely. In this scenario, the legacy application requires a specific Linux kernel version that the physical server's hardware does not support; full virtualization enables the hypervisor to present a virtualized hardware environment that is compatible with that kernel, regardless of the actual physical hardware. Technologies like VMware ESXi or KVM with hardware-assisted virtualization (Intel VT-x/AMD-V) provide this capability without requiring any modifications to the guest OS.

Answer

Paravirtualization

Answer

Containerization

Answer

Emulation

Question 7

A user reports that the camera on their smartphone takes pictures but all images are completely black, even in well-lit conditions. The camera app does not show any error messages. The flash works, and the front camera functions normally. Which component is MOST likely faulty?

Accepted Answer

Camera sensor. The camera sensor is the component that converts light into an electronic signal to form an image. If the sensor is faulty, it will not capture any light data, resulting in completely black images regardless of lighting conditions. The fact that the flash works and the front camera functions normally isolates the issue to the rear camera sensor itself, not the software or other hardware.

Answer

Camera app software

Answer

Flash LED

Answer

Proximity sensor

Question 8

A technician is installing a new M.2 NVMe SSD in a desktop computer. After installation, the computer boots to the BIOS/UEFI, but the SSD is not listed in the boot device list or among the storage devices. The technician has confirmed the SSD is properly seated in the M.2 slot and that the motherboard supports NVMe drives. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The M.2 slot is configured for SATA mode instead of NVMe/PCIe mode in the BIOS/UEFI.. The most likely cause is that the M.2 slot shares bandwidth with certain SATA ports, and installing the NVMe SSD disables those SATA ports, which may cause the SSD itself to not be detected if the slot is configured for SATA instead of NVMe. Additionally, some motherboards require a BIOS setting to explicitly enable PCIe/NVMe on the M.2 slot. Since the SSD is properly seated and the motherboard supports NVMe, a resource conflict or BIOS configuration issue is more probable than a defective drive.

Answer

The NVMe SSD requires a SATA data cable to be detected by the system.

Answer

The system's RAM is incompatible with the NVMe SSD.

Answer

The SSD must be formatted with NTFS before it can appear in the BIOS.

Question 9

A user's smartphone (Android) will not charge via the USB-C port. The technician tries a different cable and charger, and also tries cleaning the port with compressed air. The phone still does not charge. However, the phone can be recognized by a computer when connected via USB. Which of the following should the technician try next?

Accepted Answer

Inspect the port for bent pins.. The phone can still communicate data over USB (recognized by a computer), which proves the power and data lines are partially functional, but a bent pin in the USB-C connector can break the power delivery (PD) negotiation or the VBUS connection required for charging. Cleaning with compressed air only removes debris, not physical damage like bent pins, so a visual inspection is the logical next step.

Answer

Replace the battery.

Answer

Perform a factory reset.

Answer

Update the phone's firmware.

Question 10

A system administrator deploys a Type 1 hypervisor on a physical host with 16 GB of RAM. The administrator creates four virtual machines, each configured with 8 GB of allocated memory. Despite the total allocation being 32 GB, all four VMs operate normally without any performance degradation. The administrator checks and sees that the host's memory usage is steady at 85%. Which virtualization feature is MOST likely enabling this configuration?

Accepted Answer

Memory overcommitment. Memory overcommitment allows a hypervisor to allocate more virtual memory to VMs than the physical host actually has, relying on the fact that VMs rarely use their full allocation simultaneously. In this scenario, the host has 16 GB of RAM but the VMs are configured with a total of 32 GB; the hypervisor (Type 1) uses memory overcommitment to assign only the memory actually needed by each VM, keeping host usage at 85% (approximately 13.6 GB) without performance degradation.

Answer

Memory ballooning

Answer

Dynamic memory allocation

Answer

Virtual memory paging

Question 11

A technician installs a new SATA SSD into a desktop computer. The drive is not detected in the BIOS or the operating system. The technician has confirmed that the SATA data cable and power cable are securely connected to both the drive and the motherboard/PSU. Which of the following should the technician check NEXT?

Accepted Answer

Ensure the SATA controller mode is set to AHCI or RAID in BIOS.. The SATA controller mode in the BIOS must be set to AHCI or RAID for modern SATA SSDs to be recognized. If the mode is set to IDE (or Legacy), the SSD may not be detected because IDE mode does not support the native command queuing and hot-plug features that AHCI provides. Since the technician has already verified physical connections, the next logical step is to check this BIOS setting.

Answer

Update the motherboard chipset drivers.

Answer

Replace the SATA data cable with a different one.

Answer

Verify that the drive jumper is set to Master.

Question 12

A technician is replacing a 10/100 Mbps network switch with a new Gigabit switch. After connecting all devices, the technician notices that the link LEDs on several ports are showing amber instead of green. The switch documentation states that green indicates a 1000 Mbps link, and amber indicates a 10/100 Mbps link. All connected devices support Gigabit Ethernet. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The Ethernet cables between the switch and devices are faulty or of poor quality.. The amber link LED indicates that the switch is operating at 10/100 Mbps rather than the expected 1000 Mbps. Since all connected devices support Gigabit Ethernet, the most likely cause is that the Ethernet cables are faulty or of poor quality, as Gigabit Ethernet requires all four twisted pairs (8 wires) to be fully functional, whereas 10/100 Mbps only uses two pairs. A marginal or damaged cable can cause auto-negotiation to fall back to a lower speed.

Answer

The devices are configured for half-duplex, causing auto-negotiation to fail.

Answer

The power supply of the switch is insufficient for all ports.

Answer

The switch is not properly configured for Gigabit mode.

Question 13

Drag and drop the steps for configuring a SOHO wireless router into the correct order.

Accepted Answer

1. Connect router to modem and power on. 2. Connect computer to router via Ethernet. 3. Open browser and enter router IP. 4. Log in with default credentials. 5. Change admin password. 6. Configure wireless SSID and security (WPA2). 7. Save settings.. Initial setup begins with physical connections, then accessing the router, securing admin access, configuring wireless settings, and saving.

Answer

1. Connect router to modem and power on. 2. Connect computer wirelessly. 3. Open browser and enter router IP. 4. Log in with default credentials. 5. Configure wireless SSID and security. 6. Save settings. 7. (Skip changing admin password)

Answer

1. Connect router to modem and power on. 2. Connect computer via Ethernet. 3. Open browser and enter router IP. 4. Log in with default credentials. 5. Configure wireless SSID and security. 6. Save settings. 7. Change admin password.

Answer

1. Connect computer to router via Ethernet. 2. Connect router to modem and power on. 3. Open browser and enter router IP. 4. Log in with default credentials. 5. Change admin password. 6. Configure wireless SSID and security. 7. Save settings.

Question 14

A user in a small office can access shared files on the local network and can connect to the internet using a web browser when entering IP addresses directly (e.g., http://198.51.100.1) but cannot access any websites by their domain names (e.g., www.example.com). The network uses a DHCP server. Which of the following is the most likely cause of this issue?

Accepted Answer

The DNS server address is incorrect or unreachable.. The user can access resources by IP address but not by domain name, which indicates that name resolution is failing. Since the network uses DHCP, the most likely cause is that the DHCP server is providing an incorrect or unreachable DNS server address, preventing the client from resolving domain names to IP addresses.

Answer

The default gateway is configured incorrectly.

Answer

The subnet mask is set to a value that prevents Internet access.

Answer

The DHCP server has exhausted its address pool.

Question 15

A technician is configuring a small office network with a PoE-managed switch and several VoIP phones. All phones are connected and working except one. On the non-working phone, the Ethernet link light is solid on both the phone and the switch port, but the phone's display remains dark and it does not power on. The technician has verified the cable with a tester and it passes. The switch port is enabled and configured for the same VLAN as other working phones. Which of the following is the MOST likely cause?

Accepted Answer

The switch port's PoE power budget has been exceeded.. A PoE-managed switch allocates power from a finite budget. If the total power draw of all connected devices exceeds the switch's PoE power budget, the switch may deny power to additional devices even if the port is administratively enabled and the link is up. The solid Ethernet link light indicates Layer 1 connectivity, but the phone's dark display and lack of power suggest it is not receiving PoE, which is consistent with the switch having exhausted its PoE budget.

Answer

The phone's MAC address is incorrect.

Answer

The cable is a crossover cable.

Answer

The switch port is in a different subnet.