N10-009 Networking Concepts Practice Question
A network administrator needs to ensure that data sent from a host arrives at the correct destination on a different network. Which of the following provides the logical address used for this purpose in IPv4?
⚠ Common exam trap
The N10-009 exam often tests the distinction between Layer 2 (MAC) and Layer 3 (IP) addressing, trapping candidates who confuse local delivery with inter-network routing.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
IP address
In IPv4, the logical address used to route data between different networks is the IP address. The IP address contains a network portion that routers use to forward packets across network boundaries, ensuring the data reaches the correct destination network and host.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
MAC address
Why it's wrong here
A MAC (Media Access Control) address uniquely identifies a network interface card (NIC) within a local area network (LAN) segment. It is used for frame delivery between devices on the same broadcast domain. However, MAC addresses are not routable across different IP subnets or the internet, meaning they cannot ensure data reaches a host beyond its immediate local network.
When this WOULD be correct
A question asking which address is used to deliver a frame within the same local network segment, or which address is resolved via ARP for local delivery, would have MAC address as the correct answer.
- ✓
IP address
Why this is correct
An IP address uniquely identifies a host on a network and is fundamental for routing data across different network segments and the internet. Its hierarchical structure, comprising network and host portions, enables routers to efficiently determine the optimal path for packets to reach their intended destination, ensuring data arrives at the correct host regardless of its physical location.
- ✗
Port number
Why it's wrong here
A port number serves to differentiate between multiple applications or services running concurrently on a single host, directing incoming data to the correct process after it has already arrived at the destination host. While crucial for application-layer communication, it does not determine the initial delivery of data to the host across a network; that is the role of the IP address.
When this WOULD be correct
A question asking: 'Which identifier is used by a web server to distinguish between multiple services (e.g., HTTP vs HTTPS) on the same IP address?' would make port number the correct answer, as it differentiates applications on a host.
- ✗
Default gateway
Why it's wrong here
The default gateway is a router's IP address configured on a host, acting as the exit point for all traffic destined for networks outside the host's local subnet. While essential for enabling communication with external networks, the default gateway is an intermediary device, not the ultimate destination address of the data. It merely facilitates the forwarding of packets towards their final IP address.
When this WOULD be correct
A question asks: 'A host needs to send data to a server on a different subnet. Which network component must be configured on the host to enable this communication?' In that context, the default gateway is the correct answer.
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 N10-009 exam frequently reuses these exact scenarios with slightly different constraints.
✓IP addressCorrect answer▾
Why this is correct
An IP address uniquely identifies a host on a network and is fundamental for routing data across different network segments and the internet. Its hierarchical structure, comprising network and host portions, enables routers to efficiently determine the optimal path for packets to reach their intended destination, ensuring data arrives at the correct host regardless of its physical location.
✗MAC addressWrong answer — click to see why▾
Why this is wrong here
MAC addresses operate at Layer 2 (Data Link) and are used for local network delivery, not for routing across different networks. IPv4 uses IP addresses as logical addresses to identify hosts on different networks.
★ When this WOULD be the correct answer
A question asking which address is used to deliver a frame within the same local network segment, or which address is resolved via ARP for local delivery, would have MAC address as the correct answer.
Why candidates choose this
Candidates may confuse MAC addresses with IP addresses because both are used in network communication, and MAC addresses are essential for final delivery, but they are not used for cross-network routing.
✗Port numberWrong answer — click to see why▾
Why this is wrong here
Port numbers identify specific processes or services on a host (transport layer), not the destination network or host itself. The question asks for the logical address used to reach a different network, which is the IP address (network layer).
★ When this WOULD be the correct answer
A question asking: 'Which identifier is used by a web server to distinguish between multiple services (e.g., HTTP vs HTTPS) on the same IP address?' would make port number the correct answer, as it differentiates applications on a host.
Why candidates choose this
Candidates may confuse port numbers with network addressing because both are used in communication, and port numbers are often paired with IP addresses in socket pairs, leading to the misconception that they help route data across networks.
✗Default gatewayWrong answer — click to see why▾
Why this is wrong here
The default gateway is a router's IP address used to forward traffic to other networks, but it is not the logical address of the destination host. The question asks for the logical address that identifies the destination host on a different network, which is the IP address.
★ When this WOULD be the correct answer
A question asks: 'A host needs to send data to a server on a different subnet. Which network component must be configured on the host to enable this communication?' In that context, the default gateway is the correct answer.
Why candidates choose this
Candidates may confuse the default gateway with the destination address, thinking that the gateway provides the logical address for reaching other networks, but the gateway is just the next hop, not the final destination's address.
Analysis generated from the official N10-009blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
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Key term
IP address
An IP address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
Key term
Internet Protocol
Internet Protocol (IP) is the set of rules that governs how data is addressed, routed, and sent from one device to another across networks, including the internet.
About these practice questions
Courseiva writes every N10-009 question from scratch — 464 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This N10-009 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the N10-009 exam.