This 200-301 practice question tests your understanding of network infrastructure and connectivity. 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. A key principle to apply: a /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block.. 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 host is configured with 10.1.1.34/30. Which address is the broadcast address for its subnet?
10.1.1.31
Why wrong: This is wrong because .31 is in the previous /30 block.
10.1.1.35
This is correct because .34 is in the 32–35 subnet block.
10.1.1.32
Why wrong: This is wrong because .32 is the network address of the block.
10.1.1.36
Why wrong: This is wrong because .36 begins the next /30 block.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
10.1.1.35
A /30 subnet has a block size of 4. In practical terms, the last-octet blocks are 0–3, 4–7, 8–11, and so on. Because 34 falls within the 32–35 block, the broadcast address is the last address in that block: 10.1.1.35. This question tests whether you can identify the correct subnet block before choosing the broadcast address.
Key principle: A /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
10.1.1.31
Why it's wrong here
This is wrong because .31 is in the previous /30 block.
When this WOULD be correct
In a different context, if the subnet mask were /29 instead of /30, the broadcast address for the subnet 10.1.1.24/29 would be 10.1.1.31, making this option correct for that specific question.
10.1.1.35
Why this is correct
This is correct because .34 is in the 32–35 subnet block.
Related concept
A /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block.
10.1.1.32
Why it's wrong here
This is wrong because .32 is the network address of the block.
When this WOULD be correct
If the question specified a subnet mask of /29 instead of /30, then 10.1.1.32 would be the broadcast address for the subnet 10.1.1.32/29, which ranges from 10.1.1.32 to 10.1.1.39.
10.1.1.36
Why it's wrong here
This is wrong because .36 begins the next /30 block.
When this WOULD be correct
In a different question where the subnet mask is /29 and the network address is 10.1.1.32, the broadcast address would be 10.1.1.39. In this scenario, option D (10.1.1.36) could be presented as a potential answer for a question regarding valid addresses within that subnet.
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is correct
This is correct because .34 is in the 32–35 subnet block.
Why this is wrong here
The address 10.1.1.31 is incorrect as a broadcast address for the subnet 10.1.1.34/30; the correct broadcast address is 10.1.1.35, derived from the subnet mask which allows for only 4 IP addresses (10.1.1.34 to 10.1.1.37).
★ When this WOULD be the correct answer
In a different context, if the subnet mask were /29 instead of /30, the broadcast address for the subnet 10.1.1.24/29 would be 10.1.1.31, making this option correct for that specific question.
Why candidates choose this
Candidates may be tempted by this option because it follows the pattern of common subnetting calculations, where the last address in a range is often mistakenly assumed to be the broadcast address without careful consideration of the subnet mask.
Why this is wrong here
The address 10.1.1.32 is not the broadcast address for the subnet 10.1.1.34/30; instead, it is the network address for the subnet, which is 10.1.1.32 to 10.1.1.35.
★ When this WOULD be the correct answer
If the question specified a subnet mask of /29 instead of /30, then 10.1.1.32 would be the broadcast address for the subnet 10.1.1.32/29, which ranges from 10.1.1.32 to 10.1.1.39.
Why candidates choose this
Candidates may confuse the calculation of broadcast addresses and mistakenly identify the next address after the network address as the broadcast address, especially when dealing with small subnets.
Why this is wrong here
The address 10.1.1.36 is incorrect because it exceeds the valid range for a /30 subnet, which only allows for four IP addresses (two usable hosts, one network, and one broadcast). The broadcast address for the subnet 10.1.1.34/30 is 10.1.1.35.
★ When this WOULD be the correct answer
In a different question where the subnet mask is /29 and the network address is 10.1.1.32, the broadcast address would be 10.1.1.39. In this scenario, option D (10.1.1.36) could be presented as a potential answer for a question regarding valid addresses within that subnet.
Why candidates choose this
Candidates may choose option D due to a misunderstanding of subnetting boundaries, mistakenly believing that addresses immediately following the last usable IP might be valid broadcast addresses in different subnet configurations.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Ensure you correctly identify the subnet range and understand the roles of network, host, and broadcast addresses.
Detailed technical explanation
Subnetting divides an IP network into smaller, manageable segments by borrowing bits from the host portion of the address to create subnetworks. A /30 subnet mask means 30 bits are used for the network portion, leaving 2 bits for host addresses. This results in 4 IP addresses per subnet block: one network address, two usable host addresses, and one broadcast address. The block size for a /30 subnet is 4 addresses, which helps determine the range of addresses within each subnet. To find the broadcast address for a host configured with 10.1.1.34/30, you first identify the subnet block it belongs to. Since the block size is 4, the subnet blocks increment by 4 in the last octet: 0–3, 4–7, 8–11, ..., 32–35, etc. Because 34 falls within the 32–35 block, the network address is 10.1.1.32, the usable hosts are 10.1.1.33 and 10.1.1.34, and the broadcast address is the last address in the block, 10.1.1.35. A common exam trap is confusing the broadcast address with the next subnet’s network address or a host address within the subnet. For example, mistaking 10.1.1.35 as a host address instead of the broadcast address or choosing 10.1.1.31, which belongs to the previous subnet block, leads to errors. Understanding the block size and correctly identifying subnet boundaries is critical to avoid this mistake and correctly determine broadcast addresses in Cisco subnetting scenarios.
Key takeaway
A /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block.
Real-world example
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.
What to study next
Review a /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
Network Infrastructure and Connectivity — This question tests Network Infrastructure and Connectivity — A /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block..
The correct answer is: 10.1.1.35 — A /30 subnet has a block size of 4. In practical terms, the last-octet blocks are 0–3, 4–7, 8–11, and so on. Because 34 falls within the 32–35 block, the broadcast address is the last address in that block: 10.1.1.35. This question tests whether you can identify the correct subnet block before choosing the broadcast address.
Review a /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block., then practise related 200-301 questions on the same topic to reinforce the concept.
A /30 subnet mask uses 30 bits for the network portion, leaving 2 bits for host addresses, resulting in 4 IP addresses per subnet block.
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Last reviewed: May 17, 2026
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