Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A user reports that their Android smartphone displays 'Emergency calls only' at the top of the screen and cannot make or receive regular calls. The device still connects to Wi-Fi and can use messaging apps over Wi-Fi. The technician removes the SIM card, inspects it for damage, and reinserts it. The problem persists. The technician then takes a known-working SIM card from another phone and inserts it into the user's phone; the phone immediately connects to the cellular network. Which of the following is the MOST likely cause?
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 phone's cellular antenna is disconnected or damaged.
If the antenna were damaged, the phone would likely not connect to the network even with a different SIM card. Since the issue is resolved with a new SIM, the antenna is functioning.
B
Best answer
The SIM card is defective or has been deactivated by the carrier.
The phone works with a known-good SIM, and the original SIM does not work in any phone, indicating the SIM itself is faulty. It may have been deactivated or damaged.
C
Distractor review
The phone is in airplane mode but Wi-Fi is manually re-enabled.
Airplane mode disables all cellular radios. If it were enabled, the phone would not connect to any cellular network, but 'Emergency calls only' suggests it is trying but failing. Wi-Fi can be on independently.
D
Distractor review
The mobile network APN settings are incorrectly configured.
Incorrect APN settings would affect data connectivity (MMS, internet) but not voice calls. The 'Emergency calls only' state is a registration issue, not an APN issue.
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: The SIM card is defective or has been deactivated by the carrier. — The symptom 'Emergency calls only' indicates that the phone is not registered on the cellular network for normal service. Since the phone works normally with a different SIM card, the issue is not with the phone's cellular radio or firmware. The original SIM card is likely defective or damaged. SIM cards can fail over time due to electrical damage, wear, or manufacturing defects. The technician should replace the SIM card with a new one from the carrier. Other causes like network outage, incorrect APN settings, or bad phone hardware are ruled out because the known-good SIM works in the same phone and the original SIM appears physically intact.
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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