mediummultiple choiceObjective-mapped

A technician is building a custom gaming PC. After installing the motherboard, CPU, RAM, and a dedicated graphics card, the technician connects all power supply cables. The system powers on (fans spin, lights come on) but there is no display on the monitor, and no POST beeps are heard. The technician verifies that the monitor is functional and correctly connected to the graphics card's display port. The motherboard's diagnostic LEDs show a solid red CPU LED. Which of the following is the MOST likely cause of the issue?

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A technician is building a custom gaming PC. After installing the motherboard, CPU, RAM, and a dedicated graphics card, the technician connects all power supply cables. The system powers on (fans spin, lights come on) but there is no display on the monitor, and no POST beeps are heard. The technician verifies that the monitor is functional and correctly connected to the graphics card's display port. The motherboard's diagnostic LEDs show a solid red CPU LED. Which of the following is the MOST likely cause of the issue?

Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Distractor review

The CPU is not properly seated in the socket

While an improperly seated CPU can cause a no-POST condition, the diagnostic CPU LED often indicates a power delivery issue. The technician likely installed the CPU correctly, as the system powers on. Reseating the CPU is a reasonable step but not the most likely cause given the symptom.

B

Best answer

The 8-pin CPU power connector is not plugged into the motherboard

The CPU requires its own power source from the power supply via a 4-pin or 8-pin cable (EPS12V). If this cable is not connected, the CPU cannot operate, resulting in the solid CPU LED and no display. This is a common oversight during system assembly.

C

Distractor review

The RAM modules are not compatible with the motherboard

Incompatible or improperly seated RAM typically triggers the DRAM LED, not the CPU LED. The CPU LED is more specific to processor initialization failures.

D

Distractor review

The BIOS version does not support the installed CPU

A BIOS incompatibility can cause a no-POST condition, but it usually does not illuminate a dedicated CPU LED; instead, it may cause the system to power cycle or show a blank screen. Moreover, the CPU LED often points to a power or physical connection issue.

Common exam trap

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Technical deep dive

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Related practice questions

Related 220-1101 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A user reports intermittent network connectivity on a desktop computer. The technician observes that the Ethernet link light on the NIC turns off for a few seconds and then turns back on. The cable passes a wiremap test, the switch port is verified good with another device, and the NIC driver is updated. The issue occurs more frequently when the computer's case fan runs at high speed. Which of the following is the MOST likely cause?

Question 2

A workstation is unable to connect to the internet. The technician runs the 'ipconfig' command and sees the IPv4 address is 169.254.15.200 with a subnet mask of 255.255.0.0. The workstation can ping other devices on the local subnet but cannot ping the default gateway or any external addresses. Which TWO actions should the technician take to resolve this issue? (Select two.)

Question 3

A workstation is connected to a managed switch. It obtains a valid IP address (192.168.10.50) from the DHCP server, but it cannot ping the default gateway (192.168.10.1). The link light on both the workstation NIC and the switch port are solid green. Other workstations on the same switch CAN ping the default gateway successfully. The technician accesses the switch management interface and finds that the workstation's port is configured as an access port on VLAN 10. The default gateway is located on VLAN 20. An inter-VLAN router is configured but not explicitly allowing VLAN 10 access to VLAN 20. Which of the following is the MOST likely cause of the problem?

Question 4

A company develops a web application that relies on a custom library available only for a specific Linux distribution. They want to deploy the application in the cloud with minimal administrative overhead, but they need full control over the software stack, including the ability to install the custom library and configure the web server. Which cloud service model BEST meets these requirements?

Question 5

A company has a legacy virtual machine running on a deprecated hypervisor (Hyper-V). They want to migrate this VM to a new hypervisor (VMware vSphere) hosted in a private cloud while preserving the VM's configuration, installed applications, and data. The migration must be performed with minimal downtime. Which of the following methods is MOST appropriate?

Question 6

A company hosts a critical database on a virtual machine in a public cloud. The database requires persistent storage that must be retained even if the VM is terminated. The storage must also be accessible from multiple VMs simultaneously for a future high-availability configuration. Which type of cloud storage BEST meets these requirements?

FAQ

Questions learners often ask

What does this 220-1101 question test?

Static NAT maps one inside address to one outside address.

What is the correct answer to this question?

The correct answer is: The 8-pin CPU power connector is not plugged into the motherboard — The CPU LED indicator on the motherboard typically indicates a problem with the processor or its power delivery. In this scenario, the most common oversight when building a new system is forgetting to connect the 4-pin or 8-pin CPU power cable from the power supply to the motherboard's EPS12V connector. Without this dedicated power, the CPU cannot initialize, causing the system to power on but fail POST with a CPU error. Options A and C are possible but less likely if the CPU is correctly seated and the RAM is not related to the CPU LED. Option D is a plausible cause if the BIOS version is incompatible, but the CPU LED is more specific to power/initialization issues.

What should I do if I get this 220-1101 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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