Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A user in a small office reports that they can access websites on the internet but cannot connect to the company's internal file server using its hostname (\\fileserver). Other users in the same office can access the file server by hostname without any issues. The technician runs ipconfig /all on the affected workstation and sees the following: IPv4 Address: 192.168.1.45, Subnet Mask: 255.255.255.0, Default Gateway: 192.168.1.1, DNS Server: 8.8.8.8. 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 workstation's subnet mask is incorrect.
The subnet mask 255.255.255.0 is correct for a /24 network (192.168.1.0/24). An incorrect subnet mask would prevent proper communication, but the user can access the internet and presumably other local resources, so this is not the issue.
B
Best answer
The workstation is using an external DNS server instead of the internal DNS server.
The DNS server is set to 8.8.8.8 (Google's public DNS), which does not have records for the internal file server's hostname. The workstation can resolve external names but not internal ones. Other users likely use the internal DNS server (e.g., 192.168.1.5) which can resolve internal hostnames.
C
Distractor review
The default gateway is misconfigured.
The default gateway is correctly set to 192.168.1.1 and the user can access the internet, so the gateway is functioning properly. This would not cause resolution failures for internal hostnames.
D
Distractor review
The DHCP scope is exhausted.
DHCP scope exhaustion would cause the workstation to receive an Automatic Private IP Addressing (APIPA) address (169.254.x.x), not a valid 192.168.1.x address. The workstation has a valid IP, so the scope is not exhausted.
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 workstation is using an external DNS server instead of the internal DNS server. — The workstation can access the internet because it can use the external DNS server (8.8.8.8) to resolve external domains. However, internal hostnames (like fileserver) are typically only registered in the company's internal DNS server. By using an external DNS server, the workstation cannot resolve internal hostnames. Other users who can access the file server are likely using the internal DNS server. The subnet mask is correct for a /24 network. The default gateway is correct and working. DHCP scope exhaustion would cause APIPA addresses, not a working IP. So the solution is to change the DNS server to the internal one.
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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