Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A network administrator is setting up a new wireless network for a small business. The administrator configures a wireless access point with WPA2-PSK and a strong passphrase. Several users on different floors report intermittent connectivity and slow speeds. The administrator checks the access point and finds that the signal strength is excellent in the area. The access point is dual-band (2.4GHz and 5GHz) and broadcasts a single SSID. 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 access point is configured to use the default IP address, causing an IP conflict.
An IP conflict would cause connectivity issues for all users, not intermittent problems. Also, the access point is likely using a static IP or DHCP; a default IP alone is not inherently conflicting.
B
Best answer
The channel width is set to 40MHz on the 2.4GHz band, causing interference.
Using 40MHz channel width on 2.4GHz increases the risk of overlapping and interference from neighboring networks and devices (microwaves, cordless phones). 20MHz is recommended for stability. This can cause intermittent drops and slow speeds.
C
Distractor review
The encryption type is too weak for the number of users.
WPA2-PSK with a strong passphrase is considered secure and should not cause performance issues regardless of the number of users.
D
Distractor review
The access point's firmware is outdated and needs an update.
Outdated firmware can cause various issues, but the intermittent connectivity is more directly tied to channel width interference. Firmware issues typically manifest as general instability or feature problems, not band-specific symptoms.
Common exam trap
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Technical deep dive
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
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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?
OSPF neighbours must agree on key parameters.
What is the correct answer to this question?
The correct answer is: The channel width is set to 40MHz on the 2.4GHz band, causing interference. — When a dual-band access point broadcasts a single SSID, client devices are free to connect to either band. The 2.4GHz band, especially with a 40MHz channel width, is prone to interference from other devices and overlapping channels (only 3 non-overlapping channels available). This can cause intermittent connectivity and slow speeds. The recommended channel width for 2.4GHz is 20MHz to minimize interference. An IP conflict would affect all users consistently, not intermittently, and the strong signal suggests coverage is not the problem.
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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