Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A technician is troubleshooting a desktop computer that cannot access the internet. The computer is configured with a static IP address of 10.0.0.15, subnet mask 255.255.255.0, and default gateway 10.0.0.1. The technician can ping the default gateway successfully but cannot ping the public IP address 8.8.8.8. Other devices on the same network can access the internet normally. 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 DHCP server is not functioning
The computer uses a static IP address, so DHCP is not relevant. Moreover, the computer can communicate with the gateway, so it has a valid network configuration.
B
Distractor review
The default gateway is not configured correctly on the computer
Since the computer can ping the gateway successfully, the default gateway is configured and reachable. The problem lies in forwarding traffic beyond the gateway or in the computer's own outbound filtering.
C
Best answer
A firewall on the computer is blocking outbound traffic
A local firewall can block outbound connections to external IPs while still allowing local communication. This is a common misconfiguration or the result of infection. Checking the firewall settings is a logical next step.
D
Distractor review
The network cable is faulty
A faulty cable would cause intermittent connectivity or complete loss of link. The computer can ping the gateway, so the cable and link are functional.
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: A firewall on the computer is blocking outbound traffic — The ability to ping the local default gateway indicates that Layer 2 and Layer 3 connectivity to the router is functional. However, failing to ping an external IP address (8.8.8.8) suggests that either the default gateway is not forwarding traffic beyond the local subnet, or a firewall on the computer is blocking outbound traffic. Since other devices work, the issue is isolated to this workstation. A misconfigured firewall or security software on the computer could block all outbound traffic while allowing local pings. DHCP, DNS, and cable issues would affect connectivity to the gateway as well, so they are less likely.
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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