Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A technician is troubleshooting a user's desktop computer that intermittently loses network connectivity. The issue occurs only when the building's central air conditioning (HVAC) system turns on. The technician has already replaced the Ethernet cable, the NIC (network interface card), and the switch port. The computer is connected to a surge protector and the power cabling is properly routed. Which of the following is the MOST likely cause of the intermittent connectivity?
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
Best answer
Electromagnetic interference (EMI) from the HVAC motor
EMI from large motors can induce noise in unshielded twisted-pair (UTP) cabling, causing temporary signal loss. This is a common problem in office environments with heavy machinery.
B
Distractor review
IP address conflict due to DHCP lease expiration
An IP address conflict or DHCP issue would not occur only when the AC turns on. It would be a persistent or random problem unrelated to the HVAC system.
C
Distractor review
Faulty switch port
The technician already replaced the switch port, so this is no longer a likely cause. If the issue persists after swapping ports, the problem is elsewhere.
D
Distractor review
DNS server unavailability
DNS failure would affect name resolution but not basic network connectivity. The user would still have IP-level connectivity, which contradicts the symptom of complete loss of connectivity.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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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?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Electromagnetic interference (EMI) from the HVAC motor — Large electrical motors, such as those in HVAC compressors, can generate strong electromagnetic interference (EMI) when they start or run. This EMI can couple onto nearby copper network cables and disrupt the signal, causing temporary connectivity loss. Since the issue correlates precisely with the AC unit turning on, EMI is the most probable cause. EMI interference is a known issue in environments with heavy electrical equipment. The other options are less likely: IP address conflicts would not be tied to the AC unit's operation; a faulty switch port was already replaced; DNS resolution problems would not cause complete disconnects.
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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