This 300-410 practice question tests your understanding of snmp troubleshooting. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
snmp-server community MyCommunity RO 10\naccess-list 10 permit 192.168.1.0 0.0.0.255
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SNMP read-only access is allowed only from the 192.168.1.0/24 subnet.
The SNMP community 'MyCommunity' is restricted to read-only access and is associated with access-list 10, which permits only the 192.168.1.0/24 subnet. This means only SNMP managers in that subnet can use this community for read-only queries.
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.
✓
SNMP read-only access is allowed only from the 192.168.1.0/24 subnet.
Why this is correct
The access-list is applied to the community, limiting source addresses.
The community is configured as read-only (RO), and no read-write community is defined.
✗
SNMP access is allowed from any host, but only read-only.
Why it's wrong here
The access-list restricts access to the specified subnet.
✗
The community string is encrypted in the configuration.
Why it's wrong here
The community string is stored in plaintext unless 'snmp-server community ... encrypted' is used.
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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 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 300-410 subnetting questions on CIDR, address ranges, and subnet selection.
SNMP Troubleshooting — This question tests SNMP Troubleshooting — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: SNMP read-only access is allowed only from the 192.168.1.0/24 subnet. — The SNMP community 'MyCommunity' is restricted to read-only access and is associated with access-list 10, which permits only the 192.168.1.0/24 subnet. This means only SNMP managers in that subnet can use this community for read-only queries.
What should I do if I get this 300-410 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 300-410 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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