220-1101 Practice Test 1 — 10 Questions

Question 1

A small e-commerce company hosts its website on a public cloud IaaS platform. During a promotional sale, traffic increases dramatically. The cloud platform automatically provisions additional virtual machines within minutes to handle the load. The company only pays for the additional resources used during that time. Which essential cloud characteristic does this scenario BEST demonstrate?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Rapid elasticity. The scenario describes the cloud platform automatically provisioning additional virtual machines within minutes to handle a sudden traffic spike, and the company only paying for the extra resources used during that time. This directly demonstrates rapid elasticity, which is the ability to scale resources up or down automatically and quickly in response to demand. The key is the automatic scaling and the pay-per-use model for the additional capacity, which are hallmarks of elasticity in cloud computing.

Answer

On-demand self-service

Answer

Measured service

Answer

Resource pooling

Question 2

A technician is building a new desktop computer. After installing a SATA SSD, the system powers on but the drive does not appear in the BIOS. The SATA data cable is securely connected to both the drive and the motherboard. Which of the following should the technician check FIRST?

Accepted Answer

Verify the SATA power cable is connected. The SATA SSD requires both a data cable and a power cable to function. Since the data cable is confirmed secure, the most likely cause is that the SATA power cable from the power supply is not connected to the drive, which would prevent the drive from powering on and being detected in the BIOS. This is the simplest and most common oversight when building a new system.

Answer

Replace the SATA data cable

Answer

Change the SATA port in the BIOS from AHCI to IDE

Answer

Format the drive using another computer

Question 3

A technician is setting up a small office network with a wireless router serving as the DHCP server and an unmanaged 24-port switch. All desktop computers are connected to the switch via Ethernet cables. The computers can access the internet without any issues, but they cannot see each other in the network discovery list or ping each other by IP address. The technician checks the IP configuration on one computer and finds it has an IP address of 192.168.1.10 with a subnet mask of 255.255.255.0. The technician can ping the router (192.168.1.1). Which of the following is the MOST likely cause of this issue?

Accepted Answer

The Windows firewall on each computer is blocking inbound connections.. The computers can access the internet and ping the router, confirming that the DHCP server is correctly assigning IP addresses, subnet masks, and default gateways, and that the switch is forwarding traffic properly. The inability to ping each other by IP address or see each other in network discovery strongly indicates that the Windows firewall on each computer is blocking inbound ICMP and NetBIOS/LLMNR traffic, which are required for ping responses and network discovery. This is a common default behavior of Windows Firewall in certain network profiles (e.g., Public), which blocks inbound connections unless explicitly allowed.

Answer

The DHCP server is not assigning the correct default gateway.

Answer

The switch is not properly forwarding broadcast traffic between ports.

Answer

The computers are receiving IP addresses from different VLANs.

Question 4

A user's Android tablet is running low on internal storage. A microSD card has been inserted and formatted as portable storage. The user wants to move some applications to the microSD card to free up space, but the 'Move to SD card' option is grayed out for many apps. Which of the following is the MOST likely reason for this?

Accepted Answer

B. The apps are pre-installed system apps.. Pre-installed system apps are typically stored in a protected system partition that cannot be moved to external storage. Android restricts moving these apps to ensure system stability and security, as they are integral to the device's operation. The grayed-out 'Move to SD card' option indicates that the app's manifest or Android's policy prevents relocation.

Answer

A. The microSD card is not a Class 10 speed card.

Answer

C. The tablet requires a factory reset to enable app moving.

Answer

D. The microSD card is configured as internal storage.

Question 5

A user reports that their Android smartphone can make and receive phone calls, but cannot send or receive text messages (SMS/MMS) after a recent operating system update. The user has verified that the mobile data connection is working, and the messaging app is not blocked. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The SMS center number settings are incorrect.. The SMS center number (SMSC) is a critical parameter stored on the SIM card that routes outgoing text messages through the carrier's SMSC server. After an OS update, this setting can be reset or corrupted, preventing SMS/MMS transmission while voice calls and mobile data remain functional because those services use separate network paths. Correcting the SMSC number restores SMS functionality without affecting other services.

Answer

The SIM card is not properly inserted.

Answer

The phone is not connected to a Wi-Fi network.

Answer

The messaging app is corrupted.

Question 6

A small office network uses a single router connected to a managed switch. The technician has configured two VLANs on the switch: VLAN 10 for Sales and VLAN 20 for Engineering. Both VLANs can access the internet, but devices in Sales cannot reach devices in Engineering. The router has one physical interface connected to the switch. The technician configured a subinterface on the router for each VLAN with appropriate IP addresses. However, devices on VLAN 20 cannot access the internet, while VLAN 10 works fine. Which of the following is the MOST likely missing configuration?

Accepted Answer

The switch port connecting to the router is not configured as a trunk port. The router uses subinterfaces for VLAN routing, which requires the switch port connecting to the router to be configured as a trunk port (802.1Q trunking). Without trunking, the switch port will only carry traffic from a single VLAN (likely VLAN 1 or the native VLAN), so VLAN 20 frames are dropped at the switch-to-router link. This explains why VLAN 10 works (if it matches the access VLAN on that port) and VLAN 20 fails to reach the internet.

Answer

The router's DHCP server is not configured for VLAN 20

Answer

The firewall on the router is blocking all traffic from VLAN 20

Answer

The VLAN 20 subinterface is not assigned a gateway IP address

Question 7

A business uses a cloud service that automatically increases the number of virtual servers during peak traffic hours and decreases them during low usage, all without manual intervention. The policy is predefined in the cloud management console. This scenario best exemplifies which characteristic of cloud computing?

Accepted Answer

Rapid elasticity. Rapid elasticity is the correct characteristic because the cloud service automatically scales virtual server resources up and down based on predefined policies, matching demand without manual intervention. This dynamic scaling—adding instances during peak traffic and removing them during low usage—is the core definition of rapid elasticity in cloud computing, as it allows resources to expand and contract elastically to meet workload changes.

Answer

On-demand self-service

Answer

Resource pooling

Answer

Measured service

Question 8

A technician is troubleshooting a desktop computer that powers on, all fans spin, and the keyboard lights flash, but the monitor displays 'No Signal'. The monitor and video cable are known to work with another computer. The technician has already reseated the RAM and tested with known-good RAM. The motherboard has no diagnostic LEDs or speaker. Which of the following should the technician do NEXT?

Accepted Answer

Reseat the CPU. The symptoms—power on, fans spinning, keyboard lights flashing, but no display—indicate that the motherboard is receiving power and the CPU is likely initializing, but the system is failing to complete POST. Since the RAM has been reseated and tested with known-good modules, the next most probable cause is a loose or improperly seated CPU. Reseating the CPU ensures proper contact with the socket pins, which is critical for the CPU to communicate with the chipset and memory controller. This step follows the logical troubleshooting flow of checking the CPU before moving to the power supply or other components.

Answer

Reseat the CPU power connector

Answer

Test the monitor with a different cable

Answer

Replace the power supply

Question 9

A technician is troubleshooting a desktop computer that powers on (fans spin, lights turn on) but the monitor displays 'No Signal'. The technician has already verified that the monitor works on another computer and has reseated the RAM and the discrete GPU. The motherboard has integrated graphics. Which of the following should the technician do NEXT?

Accepted Answer

Remove the discrete GPU and connect the monitor to the integrated graphics port.. Since the monitor works on another computer and the RAM/GPU have been reseated, the next logical step is to isolate whether the discrete GPU is faulty. By removing the discrete GPU and connecting the monitor to the integrated graphics port, the technician can test if the system boots with the CPU's built-in graphics. If it does, the discrete GPU is likely the problem; if not, the issue lies elsewhere (e.g., motherboard or CPU).

Answer

Replace the power supply unit (PSU) with a known-working unit.

Answer

Clear the CMOS by removing the onboard battery for 30 seconds.

Answer

Replace the RAM modules with known-working ones.

Question 10

A technician notices a constant high-pitched whine coming from the power supply area of a desktop computer. The computer boots and operates normally under all workloads. The technician has already checked that all fans are free of obstructions and that no cables are touching the fan blades. Which of the following components is most likely causing the noise?

Accepted Answer

Power supply coil whine due to electrical resonance. A constant high-pitched whine from the power supply area, especially when the system operates normally under all workloads, is characteristic of coil whine. This occurs when electrical current passes through an inductor (coil) in the power supply, causing the coil's windings to vibrate at a frequency within the audible range due to electrical resonance. Since the noise is not mechanical (fans are clear) and the system functions correctly, coil whine is the most likely cause.

Answer

Faulty CPU fan bearing

Answer

Defective power supply capacitor

Answer

Loose mounting screw vibrating