Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A small office uses a router with a built-in switch and a separate wireless access point. Users on the wired network can access the internet and internal resources, but wireless users cannot access any internal resources. Wireless users can connect to the access point and obtain an IP address in the 192.168.2.0/24 range, while wired users are on 192.168.1.0/24. The router's LAN interface is 192.168.1.1/24, and the access point is connected to the router's switch port and has an IP of 192.168.1.100/24. 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 access point is not configured as a bridge.
Even if the access point is in bridge mode, it would pass traffic without routing, meaning wireless clients would typically get IPs from the same subnet as wired. The fact that they are on a different subnet indicates the access point is acting as a router or has its own DHCP server. The issue is routing, not operating mode.
B
Best answer
The router does not have a route between the two subnets.
The wireless subnet (192.168.2.0/24) is not directly connected to the router. The router needs a static route or the access point must perform inter-VLAN routing. Without a route, the router drops packets destined for 192.168.1.0/24 from the wireless subnet, or vice versa. This is the most likely cause of the connectivity failure.
C
Distractor review
The wireless network encryption is set incorrectly.
Incorrect encryption would prevent wireless users from connecting to the access point altogether. Since they can connect and obtain an IP address, encryption is correctly configured. Encryption does not affect IP routing.
D
Distractor review
The access point's DHCP server is conflicting with the router.
A DHCP conflict could cause IP assignment issues, but wireless users are successfully getting addresses in the 192.168.2.0/24 range. The conflict would not necessarily prevent inter-subnet communication; it might cause address duplication or incorrect gateway assignment. However, the primary issue is routing, not DHCP.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
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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?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: The router does not have a route between the two subnets. — The wireless users are on a different subnet (192.168.2.0/24) than the wired users (192.168.1.0/24). The router only knows about its directly connected subnet; it does not have a route to the 192.168.2.0/24 network. Without a route configured on the router or the access point acting as a router, traffic from the wireless subnet cannot be forwarded to the wired subnet. The access point likely is performing NAT or simply forwarding traffic to its default gateway (the router), but the router lacks the return route.
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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