220-1101 Practice Test 49 — 15 Questions

Question 1

A company is developing a custom application that requires a specific Linux kernel version and full root access to install and configure third-party security modules. The company wants to minimize the management of physical infrastructure but needs complete control over the operating system environment, including the ability to modify kernel parameters. The cloud provider will be responsible for all underlying hardware and the hypervisor. Which cloud service model should the company choose?

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

Accepted Answer

Infrastructure as a Service (IaaS). IaaS provides virtualized computing resources over the internet, granting the customer full administrative control over the operating system, including the ability to install custom kernels, modify kernel parameters, and install third-party security modules. The cloud provider manages the physical hardware and hypervisor, while the customer retains complete control of the guest OS, meeting the requirement for root access and kernel customization without managing physical infrastructure.

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Database as a Service (DBaaS)

Question 2

A technician is troubleshooting a desktop PC that emits one long beep followed by three short beeps immediately after pressing the power button. The system does not display any video. The motherboard uses an AMI BIOS. Which of the following is the MOST likely cause of the beep code?

Accepted Answer

Memory (RAM) failure. AMI BIOS uses a beep code of one long followed by three short beeps to indicate a memory (RAM) failure. This code typically means the system cannot read or initialize the RAM modules, which prevents the POST process from completing and results in no video output.

Answer

Video card failure

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CPU failure

Answer

Power supply failure

Question 3

A technician is troubleshooting a workstation that has intermittent network connectivity. The link light on the NIC flashes on and off irregularly. The workstation is connected to a 1 Gbps switch port. The technician runs a loopback test on the NIC, which passes. The cable is a known-good Cat6 cable. The technician checks the switch port configuration and finds it is hard-coded to 100 Mbps full duplex. The workstation NIC is set to auto-negotiate. Which of the following is the MOST likely cause of the issue?

Accepted Answer

Duplex mismatch. The loopback test passed, ruling out a faulty NIC. The known-good Cat6 cable eliminates a bad cable. The switch port is hard-coded to 100 Mbps full duplex while the workstation NIC is set to auto-negotiate. This creates a duplex mismatch: auto-negotiation on the NIC fails to detect the fixed setting on the switch, causing the NIC to fall back to half-duplex while the switch remains full-duplex, leading to intermittent connectivity and irregular link light behavior.

Answer

Faulty NIC

Answer

Bad cable

Answer

Incorrect VLAN assignment

Question 4

A user reports that they cannot access the company intranet website at http://intranet. The technician opens a browser on the workstation and types the IP address 192.168.10.5, which successfully loads the intranet page. The workstation is configured to obtain IP settings automatically via DHCP. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The DHCP server is not providing a DNS server address. The user can access the intranet by IP address but not by hostname, which indicates a name resolution failure. Since the workstation uses DHCP, the most likely cause is that the DHCP server is not providing a DNS server address, so the browser cannot resolve 'intranet' to an IP. This is a classic symptom of missing or misconfigured DNS settings from DHCP.

Answer

The intranet server is down

Answer

The workstation has a corrupted hosts file

Answer

The workstation's browser cache is full

Question 5

A technician is troubleshooting inter-subnet connectivity. The network consists of a router with two interfaces: 192.168.1.1/24 for Subnet A and 192.168.2.1/24 for Subnet B. A device on Subnet A (192.168.1.10/24) can ping the router's Subnet A interface (192.168.1.1) and other devices on Subnet A, but cannot ping a device on Subnet B (192.168.2.10/24). The device on Subnet B can ping its gateway (192.168.2.1) and other Subnet B devices. The router has IP routing enabled and no ACLs are configured. Which of the following is the MOST likely cause of the issue?

Accepted Answer

The device on Subnet A has a software firewall blocking incoming ICMP traffic. The device on Subnet A can reach its own gateway and local hosts, and the router has IP routing enabled with no ACLs, so routing is functional. The device on Subnet B can ping its own gateway, confirming that Subnet B's network and the router's interface are up. The most likely cause is that the device on Subnet A has a software firewall (e.g., Windows Defender Firewall) blocking incoming ICMP Echo Replies, which prevents the ping response from Subnet B from reaching Subnet A. This is a common scenario where outbound ICMP is allowed but inbound ICMP is blocked by the host firewall.

Answer

The router's interface on Subnet A is administratively down

Answer

The subnet mask on the device in Subnet B is incorrect

Answer

The switch port connecting the router to Subnet B is configured as an access port in the wrong VLAN

Question 6

A technician builds a high-performance workstation for video editing. The motherboard supports DDR4 RAM up to 3200 MHz, and the CPU's official memory controller supports DDR4 up to 2933 MHz. The technician installs two 16 GB sticks rated at 3600 MHz. The system boots, but the memory speed is only 2133 MHz. The technician has enabled XMP (Extreme Memory Profile) in the BIOS. Which of the following is the MOST likely reason the RAM is not running at its rated speed?

Accepted Answer

The CPU's memory controller does not support 3600 MHz natively and may not be stable at that overclocked speed. The CPU's official memory controller supports DDR4 up to 2933 MHz natively. The installed RAM is rated at 3600 MHz, which exceeds this specification. Enabling XMP attempts to overclock the memory beyond the CPU's native support, but the system may fall back to a safe default speed (2133 MHz) if the CPU's integrated memory controller (IMC) cannot reliably handle the overclocked frequency. This is the most likely reason the RAM is running at 2133 MHz instead of its rated speed.

Answer

The motherboard only supports a maximum memory speed of 2133 MHz

Answer

The RAM modules are not fully seated in the slots

Answer

The power supply unit (PSU) does not provide enough wattage for the high-speed RAM

Question 7

A company hosts a legacy application on a virtual machine. The application's license is tied to the MAC address of the virtual machine's network interface. The administrator needs to migrate the VM to a different host server without breaking the license. Which of the following virtualization features should the administrator use?

Accepted Answer

MAC address cloning/static assignment. The application's license is tied to the MAC address of the VM's network interface. When a VM is migrated to a different host, the hypervisor typically assigns a new MAC address, which would break the license. By using MAC address cloning or static assignment, the administrator can preserve the original MAC address on the new host, ensuring the license remains valid.

Answer

VLAN tagging

Answer

Jumbo frames

Answer

Network bonding/teaming

Question 8

A small office has 15 desktop computers connected to a single managed switch. The switch is connected to a router that provides DHCP and DNS services. Users report that they can access the internet but cannot communicate with each other using computer names (e.g., \PC1). The technician verifies that all workstations are on the same subnet (192.168.1.0/24) and can successfully ping each other's IP addresses. Which of the following is the MOST likely cause of the issue?

Accepted Answer

NetBIOS over TCP/IP is disabled on the workstations. NetBIOS over TCP/IP (NBT) is required for name resolution of NetBIOS names, which are used in Windows for computer names like \PC1. When NBT is disabled, Windows cannot resolve NetBIOS names to IP addresses, preventing communication by computer name even though IP-based communication (ping) works. Since DNS is functioning (internet access works) and all computers are on the same subnet, the most likely cause is that NetBIOS over TCP/IP is disabled on the workstations.

Answer

The DNS server is not configured correctly

Answer

Windows Firewall is blocking file and printer sharing

Answer

Workgroups are not configured the same on all computers

Question 9

A user in a small office can access internal network resources by IP address but cannot access any websites by domain name. Other users on the same network can browse the internet without issues. The user's workstation obtains an IP address via DHCP and can successfully ping the default gateway. Which of the following is the MOST likely cause of the issue?

Accepted Answer

Incorrect DNS server address on the workstation. The user can access internal resources by IP address and ping the default gateway, confirming Layer 2/3 connectivity is intact. The inability to resolve domain names to IP addresses while other users can browse normally points directly to a DNS resolution failure. Since the workstation obtains its IP via DHCP, the most likely cause is that the DHCP server provided an incorrect or no DNS server address, or the workstation's DNS settings were manually misconfigured, preventing name resolution.

Answer

Faulty network cable

Answer

DHCP scope exhaustion

Answer

Firewall blocking outbound traffic

Question 10

A user reports that their wired desktop computer loses network connectivity for a few seconds at random times. The technician observes that when the issue occurs, the network activity LED on the integrated NIC turns off. The technician has already replaced the Ethernet cable, tested the switch port with another device (which works fine), and updated the NIC driver. Which of the following should the technician check NEXT?

Accepted Answer

B) Check the NIC's power management settings in Device Manager and disable 'Allow the computer to turn off this device to save power'. The symptom—random, brief connectivity loss with the NIC activity LED turning off—strongly suggests the operating system is powering down the NIC to save energy. Disabling the 'Allow the computer to turn off this device to save power' setting in the NIC's power management properties prevents the OS from entering a low-power state that drops the link. Since the cable, switch port, and driver have already been verified, this is the logical next step.

Answer

A) Replace the motherboard

Answer

C) Disable IPv6 on the NIC

Answer

D) Manually set the NIC speed and duplex to 10 Mbps Full Duplex

Question 11

A user at a small office reports that they can access the internet but cannot connect to the company's internal file server using its hostname (\fileserver). The user can ping the file server's IP address successfully. The technician checks the workstation's network settings and sees that it is obtaining an IP address from DHCP and the default gateway is correct. The DNS server address is set to the company's internal DNS server (192.168.1.5). Other workstations on the same network can access the file server by hostname without issue. Which of the following is the MOST likely cause of the problem?

Accepted Answer

The workstation's hosts file contains an incorrect entry for fileserver.. The user can ping the file server by IP but not by hostname, and other workstations resolve the hostname correctly. This points to a local name resolution issue on the affected workstation. The hosts file (located at %SystemRoot%\System32\drivers\etc\hosts) is checked before DNS queries, so an incorrect entry mapping 'fileserver' to a wrong or unreachable IP would cause the failure while DNS remains functional for others.

Answer

The file server's firewall is blocking ping requests.

Answer

The workstation's DNS cache is corrupted.

Answer

The file server's network cable is faulty.

Question 12

A graphic design company needs to render a complex 3D animation that will take approximately 4 hours to complete. The rendering software requires a powerful CPU and a large amount of RAM. The company's on-premises workstations are not powerful enough, and they do not want to purchase new hardware. Which cloud computing characteristic would BEST allow them to complete this task cost-effectively?

Accepted Answer

Elasticity. Elasticity allows the company to provision cloud-based virtual machines with the required CPU and RAM for the duration of the rendering task (4 hours) and then de-provision them immediately after, paying only for the compute time used. This avoids the capital expenditure of purchasing new hardware and is cost-effective because resources scale up on demand and scale down when no longer needed.

Answer

Metered service / measured service

Answer

Resource pooling

Answer

High availability

Question 13

A user reports that their smartphone's screen appears to be slightly bulging outward and the back cover is separating from the chassis. The phone still powers on and functions normally. Which of the following components is MOST likely causing this issue?

Accepted Answer

Battery. A bulging screen and separating back cover are classic signs of a swollen lithium-ion battery. As the battery degrades, internal chemical reactions produce gas, causing the battery casing to swell and physically push against the phone's chassis. This occurs even if the phone still powers on and functions normally, as the battery can still deliver voltage while its physical integrity is compromised.

Answer

Digitizer

Answer

LCD panel

Answer

Charging port

Question 14

A user reports that their smartphone's 3.5mm headphone jack is not working. When headphones are inserted, the music continues to play from the built-in speaker, and the headphone icon does not appear in the status bar. The technician has cleaned the jack with compressed air and tested with multiple headphones. Which of the following components is MOST likely faulty?

Accepted Answer

The headphone jack assembly.. The headphone jack assembly contains a mechanical switch that detects when a plug is inserted and routes audio away from the built-in speaker. Since cleaning and multiple headphones did not resolve the issue, the most likely fault is a broken or stuck detection mechanism within the jack assembly itself, preventing the device from recognizing that headphones are connected.

Answer

The audio codec chip.

Answer

The battery.

Answer

The motherboard.

Question 15

A user reports that their Android smartphone's battery drains much faster than usual after a recent system update. The phone is two years old and has been working normally until now. The user has already restarted the device. Which of the following should the technician recommend FIRST?

Accepted Answer

Check for updates to installed apps. After a system update, app compatibility issues or background processes can cause excessive battery drain. Checking for app updates ensures that apps are optimized for the new OS version, as outdated apps may use more CPU or keep the device awake unnecessarily. This is the least invasive and most logical first step before considering hardware replacement or disabling core features.

Answer

Perform a factory reset

Answer

Replace the battery

Answer

Disable location services