CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. 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: dHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It can automatically provide an IP address to a client.
DHCP is used to provide IP configuration automatically to hosts. In practical terms, it can supply an IP address, subnet mask, default gateway, and often DNS server information. This reduces manual effort and helps standardize endpoint configuration across a network.
The wrong answers often confuse DHCP with DNS or routing. The two correct answers are the ones focused on automatic host configuration.
Key principle: DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
It can automatically provide an IP address to a client.
Why this is correct
This is correct because address assignment is a core DHCP function.
Related concept
DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
✓
It can provide additional configuration such as default gateway and DNS server information.
Why this is correct
This is correct because DHCP commonly provides more than just the IP address.
Related concept
DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
✗
It resolves hostnames into IP addresses.
Why it's wrong here
This is wrong because DNS performs hostname resolution.
When this WOULD be correct
In a question asking which protocol is responsible for resolving hostnames to IP addresses, option C would be correct if the context specifically pertains to DNS operations. For example, a question could ask about the role of DNS in a network setup.
✗
It elects the designated router in OSPF.
Why it's wrong here
This is wrong because OSPF election is unrelated to DHCP.
When this WOULD be correct
If the question were about OSPF functionality, specifically asking which protocol is responsible for electing the designated router, option D would be correct. In that context, a candidate might be asked to identify routing protocol behaviors, making this statement valid.
✗
It replaces the need for subnet masks.
Why it's wrong here
This is wrong because DHCP supplies masks; it does not remove the need for them.
When this WOULD be correct
In a scenario where the exam question asks about protocols that eliminate the need for traditional networking configurations, such as in a highly abstracted cloud environment where subnetting is managed automatically, this option could be considered correct.
Option-by-option analysis
Why each answer is right or wrong
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.
✓It can automatically provide an IP address to a client.Correct answer▾
Why this is correct
This is correct because address assignment is a core DHCP function.
✗It resolves hostnames into IP addresses.Wrong answer — click to see why▾
Why this is wrong here
This option is wrong because DHCP (Dynamic Host Configuration Protocol) does not resolve hostnames into IP addresses; that function is typically performed by DNS (Domain Name System).
★ When this WOULD be the correct answer
In a question asking which protocol is responsible for resolving hostnames to IP addresses, option C would be correct if the context specifically pertains to DNS operations. For example, a question could ask about the role of DNS in a network setup.
Why candidates choose this
Candidates may choose this option due to a misunderstanding of network protocols, confusing DHCP's role in IP address assignment with DNS's role in hostname resolution, leading to an assumption that DHCP handles both functions.
✗It elects the designated router in OSPF.Wrong answer — click to see why▾
Why this is wrong here
Option D is incorrect because DHCP (Dynamic Host Configuration Protocol) does not participate in the election of designated routers in OSPF (Open Shortest Path First), which is a routing protocol. DHCP is solely responsible for assigning IP addresses and configuration settings to clients on a network.
★ When this WOULD be the correct answer
If the question were about OSPF functionality, specifically asking which protocol is responsible for electing the designated router, option D would be correct. In that context, a candidate might be asked to identify routing protocol behaviors, making this statement valid.
Why candidates choose this
Candidates might be tempted by option D due to a misunderstanding of network protocols, conflating DHCP's role in IP address management with OSPF's routing functions, leading them to incorrectly associate DHCP with router election processes.
✗It replaces the need for subnet masks.Wrong answer — click to see why▾
Why this is wrong here
This option is wrong because DHCP does not replace the need for subnet masks; it can assign IP addresses within a subnet defined by a subnet mask, but the subnet mask itself is still necessary for proper network segmentation and routing.
★ When this WOULD be the correct answer
In a scenario where the exam question asks about protocols that eliminate the need for traditional networking configurations, such as in a highly abstracted cloud environment where subnetting is managed automatically, this option could be considered correct.
Why candidates choose this
Candidates may find this option tempting due to a misunderstanding of DHCP's role in network configuration, confusing its ability to manage IP addresses with the idea that it can eliminate the need for fundamental networking concepts like subnet masks.
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
Common exam trap: answer the scenario, not the keyword
A common exam trap is confusing DHCP with DNS or routing protocol functions. Some candidates mistakenly believe DHCP resolves hostnames to IP addresses, but this is the role of DNS. Others incorrectly think DHCP participates in routing protocol processes such as OSPF designated router elections, which it does not. Additionally, some may assume DHCP eliminates the need for subnet masks, but DHCP actually provides subnet mask information to clients. Recognizing that DHCP strictly handles IP address and related configuration assignment prevents these errors.
Detailed technical explanation
How to think about this question
Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of configuring devices on IP networks. DHCP enables hosts to obtain IP addresses and other related configuration information such as subnet masks, default gateways, and DNS server addresses without manual intervention. This automation reduces configuration errors and simplifies network administration, especially in large or dynamic environments.
In Cisco networking and the CCNA context, DHCP operates by leasing IP addresses from a DHCP server to clients for a specified period. The DHCP server maintains a pool of available IP addresses and assigns them dynamically when a client requests configuration. Besides IP addresses, DHCP can provide additional parameters like the default gateway and DNS servers, which are critical for proper network communication and name resolution. This makes DHCP a comprehensive IP service rather than just an IP address allocator.
A common exam trap is confusing DHCP with DNS or routing protocols. DHCP does not resolve hostnames to IP addresses; that is the role of DNS. Similarly, DHCP does not participate in routing decisions or protocol elections like OSPF designated router selection. Understanding these distinctions is crucial for correctly answering questions about IP services. Practically, DHCP streamlines device onboarding and network scalability by centralizing IP configuration management.
KKey Concepts to Remember
DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
DHCP provides additional network configuration parameters such as subnet masks, default gateways, and DNS server addresses to clients.
A DHCP server manages a pool of IP addresses and leases them to clients for a limited time to optimize address utilization.
DHCP reduces configuration errors and administrative overhead by centralizing IP address and related configuration management.
DHCP does not perform hostname resolution; this function is handled by DNS in IP networks.
DHCP is unrelated to routing protocols and does not participate in routing decisions or protocol elections like OSPF.
Clients use DHCP discovery and request messages to obtain IP configuration dynamically from DHCP servers.
DHCP leases can be renewed or released by clients to maintain or free IP addresses within the network.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 200-301 question in full detail.
Review dHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device., then practise related 200-301 questions on the same topic to reinforce the concept.
Network Services and Security — This question tests Network Services and Security — DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device..
What is the correct answer to this question?
The correct answer is: It can automatically provide an IP address to a client. — DHCP is used to provide IP configuration automatically to hosts. In practical terms, it can supply an IP address, subnet mask, default gateway, and often DNS server information. This reduces manual effort and helps standardize endpoint configuration across a network.
The wrong answers often confuse DHCP with DNS or routing. The two correct answers are the ones focused on automatic host configuration.
What should I do if I get this 200-301 question wrong?
Review dHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device., then practise related 200-301 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
DHCP automatically assigns IP addresses to clients, eliminating the need for manual IP configuration on each device.
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