220-1102 Logical Security Concepts Practice Question
This 220-1202 practice question tests your understanding of logical security concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A small business wants to ensure that only authorized employees can access the file server from their laptops. Each laptop has a unique MAC address. Which security measure should be implemented on the network switch?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure MAC filtering
MAC address filtering restricts network access to devices with approved MAC addresses, providing a basic layer of security. This is a simple way to allow only specific laptops to connect to the file server.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Disable SSID broadcast
Why it's wrong here
Disabling SSID broadcast hides the network name but does not control which devices can connect.
✗
Enable WPA3 encryption
Why it's wrong here
WPA3 encrypts wireless traffic but does not restrict access based on MAC addresses.
✓
Configure MAC filtering
Why this is correct
MAC filtering allows only devices with approved MAC addresses to access the network, meeting the requirement.
Changing the default password secures the router but does not control which laptops can connect.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1202 question in full detail.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 220-1202 subnetting questions on CIDR, address ranges, and subnet selection.
Logical Security Concepts — This question tests Logical Security Concepts — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Configure MAC filtering — MAC address filtering restricts network access to devices with approved MAC addresses, providing a basic layer of security. This is a simple way to allow only specific laptops to connect to the file server.
What should I do if I get this 220-1202 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 220-1202 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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