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, subnet masks, default gateways, and DNS server information to hosts joining an IP network.. 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 receives an IP address, subnet mask, default gateway, and DNS server automatically when it joins the network. Which service is most directly responsible for delivering that bundle of settings?
DHCP
This is correct because DHCP provides automatic host IP configuration information.
Syslog
Why wrong: This is wrong because Syslog provides event visibility, not host configuration.
NTP
Why wrong: This is wrong because NTP synchronizes time, not IP settings.
GRE
Why wrong: This is wrong because GRE is a tunneling technology, not a host-configuration service.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
DHCP
DHCP is most directly responsible because it is designed to provide hosts with IP configuration parameters automatically. In practical terms, this often includes the address, mask, gateway, and DNS server information needed for ordinary operation. That is exactly why DHCP is such a central end-host service. This is one of the most foundational services in enterprise client connectivity.
Key principle: DHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
DHCP
Syslog
Why it's wrong here
This is wrong because Syslog provides event visibility, not host configuration.
When this WOULD be correct
If the exam question asked about the service responsible for collecting and managing log messages from network devices, then Syslog would be the correct answer. For example, a question could ask which service helps in monitoring network events and troubleshooting issues.
NTP
Why it's wrong here
This is wrong because NTP synchronizes time, not IP settings.
When this WOULD be correct
If the question were to ask about the synchronization of time settings across devices in a network, or if it specified that the host needed to synchronize its clock with a time server, then NTP would be the correct answer.
GRE
Why it's wrong here
This is wrong because GRE is a tunneling technology, not a host-configuration service.
When this WOULD be correct
If the question asked about a protocol used for creating secure tunnels between networks or for encapsulating packets, then GRE would be the correct answer. For example, a question could ask about protocols that facilitate VPN connections, where GRE is relevant.
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 DHCP provides automatic host IP configuration information.
Why this is wrong here
Syslog is a protocol used for logging and monitoring system events, not for delivering network configuration parameters. It collects and forwards log messages from network devices to a central server for analysis, but does not assign IP settings.
★ When this WOULD be the correct answer
If the exam question asked about the service responsible for collecting and managing log messages from network devices, then Syslog would be the correct answer. For example, a question could ask which service helps in monitoring network events and troubleshooting issues.
Why candidates choose this
Students might confuse Syslog with a configuration service because it is a common network service that interacts with hosts, but its purpose is entirely different—it provides event visibility, not host configuration.
Why this is wrong here
NTP (Network Time Protocol) is designed to synchronize clocks between devices over a network, ensuring accurate timekeeping. It does not provide IP address, subnet mask, default gateway, or DNS server information to hosts.
★ When this WOULD be the correct answer
If the question were to ask about the synchronization of time settings across devices in a network, or if it specified that the host needed to synchronize its clock with a time server, then NTP would be the correct answer.
Why candidates choose this
NTP is a well-known network service that is often configured alongside DHCP, leading students to mistakenly think it might also deliver configuration settings. However, its sole function is time synchronization.
Why this is wrong here
GRE (Generic Routing Encapsulation) is a tunneling protocol used to encapsulate packets of one protocol within another, typically for creating VPNs or connecting remote networks. It does not provide host configuration parameters like IP addresses or DNS servers.
★ When this WOULD be the correct answer
If the question asked about a protocol used for creating secure tunnels between networks or for encapsulating packets, then GRE would be the correct answer. For example, a question could ask about protocols that facilitate VPN connections, where GRE is relevant.
Why candidates choose this
GRE is a common term in networking, and students might associate it with 'configuration' due to its role in encapsulating traffic, but it is not a host-configuration service. The acronym similarity to DHCP might also cause confusion.
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
Be careful not to confuse services that involve IP addresses with those that assign them. DHCP assigns IP settings, while others like DNS, NAT, and ARP have different roles.
Detailed technical explanation
Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on IP networks to automatically assign IP addresses and other network configuration parameters to devices, enabling them to communicate on an IP network without manual intervention. DHCP servers maintain a pool of IP addresses and lease them to clients for a specific duration, along with subnet masks, default gateways, and DNS server addresses. This automation simplifies network administration and reduces configuration errors, especially in large networks. When a host joins a network, it sends a DHCPDISCOVER broadcast message to locate available DHCP servers. The DHCP server responds with a DHCPOFFER containing an IP address and configuration details. The host then requests the offered IP with a DHCPREQUEST, and the server confirms with a DHCPACK. This four-step process ensures the host receives all necessary settings, including the subnet mask to define the network boundary, the default gateway for routing traffic outside the local subnet, and DNS servers for name resolution. Cisco devices support DHCP client and server roles, making this protocol integral to CCNA-level IP services. A common exam trap is confusing DHCP with other network services that provide different functions. For example, Syslog only collects and logs device messages, NTP synchronizes device clocks, and GRE tunnels encapsulate packets but do not assign IP configurations. Understanding that DHCP specifically automates IP-related settings is critical. In practical networks, DHCP reduces manual errors and speeds up host deployment, but misconfigurations can cause IP conflicts or connectivity issues, emphasizing the importance of correct DHCP setup and troubleshooting skills in Cisco environments.
Key takeaway
DHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network.
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 dHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
Network Services and Security — This question tests Network Services and Security — DHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network..
The correct answer is: DHCP — DHCP is most directly responsible because it is designed to provide hosts with IP configuration parameters automatically. In practical terms, this often includes the address, mask, gateway, and DNS server information needed for ordinary operation. That is exactly why DHCP is such a central end-host service. This is one of the most foundational services in enterprise client connectivity.
Review dHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network., then practise related 200-301 questions on the same topic to reinforce the concept.
DHCP automatically assigns IP addresses, subnet masks, default gateways, and DNS server information to hosts joining an IP network.
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Last reviewed: May 17, 2026
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