ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. 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 network engineer is monitoring a hybrid network with a VPN connection to AWS. The engineer notices periodic packet loss and high latency during peak hours. The VPN tunnel uses static routing. The on-premises bandwidth is 100 Mbps, and the VPN connection is limited to 1.25 Gbps. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The on-premises internet connection is saturated.
The VPN connection's bandwidth (1.25 Gbps) is sufficient, but if the on-premises link is only 100 Mbps, any traffic exceeding that will cause congestion and packet loss. The VPN tunnel itself is not the bottleneck.
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.
✗
The VPC route table has a blackhole route for the on-premises CIDR.
Why it's wrong here
A blackhole route would cause complete loss, not periodic.
✓
The on-premises internet connection is saturated.
Why this is correct
The 100 Mbps link is likely overwhelmed during peak hours, causing packet loss and high latency.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
The VPN tunnel is using the incorrect encryption algorithm.
Why it's wrong here
Incorrect encryption would cause the tunnel to fail, not periodic packet loss.
✗
The VPN tunnel is exceeding its maximum bandwidth limit.
Why it's wrong here
The tunnel limit is 1.25 Gbps, far above the 100 Mbps link.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
Network Management and Operations — This question tests Network Management and Operations — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: The on-premises internet connection is saturated. — The VPN connection's bandwidth (1.25 Gbps) is sufficient, but if the on-premises link is only 100 Mbps, any traffic exceeding that will cause congestion and packet loss. The VPN tunnel itself is not the bottleneck.
What should I do if I get this ANS-C01 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 ANS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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