Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A workstation with a static IP address of 192.168.1.10/24 can ping its default gateway (192.168.1.1) and other workstations on the same subnet. However, it cannot ping any device on a different subnet (e.g., 10.0.0.1) nor access the internet. Other workstations on the same subnet can ping the same remote device and access the internet without issue. The technician has verified the workstation's IP configuration is correct. 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 workstation's firewall is blocking all traffic to remote subnets.
A local firewall typically blocks inbound traffic, not outbound, unless a custom rule is set. Moreover, if the firewall were blocking outbound ICMP, it would also affect pinging the gateway, which works. Therefore, this is unlikely.
B
Distractor review
The default gateway IP address is misconfigured on the workstation.
The workstation can successfully ping the gateway (192.168.1.1), so the default gateway is correctly configured and reachable.
C
Distractor review
The subnet mask is incorrect.
The workstation can communicate with other devices in the 192.168.1.0/24 subnet, which indicates the subnet mask is set correctly for that network.
D
Best answer
The router's ACL or firewall is blocking the workstation's IP address from accessing other networks.
This is the most likely cause. The router may have a rule that denies traffic from the specific source IP 192.168.1.10 to other subnets. Since other workstations are not blocked, the issue is specific to this IP address.
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's ACL or firewall is blocking the workstation's IP address from accessing other networks. — The workstation can communicate within its own subnet and reach the gateway, which eliminates issues with cabling, NIC, and the gateway itself. Since other workstations can access remote networks, the router and upstream connectivity are functional. The most probable cause is that the router has an access control list (ACL) or firewall rule that specifically blocks traffic from the affected workstation's IP address to other networks. This could be due to a security policy or a misconfiguration on the router. The workstation's firewall would not prevent ICMP pings to external destinations unless specifically configured, and it would not affect only this workstation's ability to reach other subnets while others can.
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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