N10-009 Free Practice Questions — Page 2 (2026)

Question 7

Users are reporting issues with mobile phone connectivity after a cellular repeater was recently installed. Users also note that the phones are rapidly losing battery charge. Which of the following should the technician check first to troubleshoot the issue?

A. WPS configuration

B. Signal strength

C. Channel frequency

D. Power budget

Show Answer

Correct Answer: B

Explanation:
A newly installed cellular repeater that causes connectivity problems and rapid battery drain most commonly points to improper or fluctuating signal strength. If the repeater is too strong, too weak, oscillating, or causing interference, phones will constantly increase transmit power and hunt for a stable connection, which drains the battery quickly. WPS is Wi‑Fi–specific and irrelevant, channel frequency is managed by the carrier and not typically user-adjustable on cellular repeaters, and power budget is more relevant to wired network design than to handset battery drain in this scenario.

Question 8

A global company has acquired a local company. The companies are geographically separate. The fully utilized IP address ranges for the two companies are as follows: • Global company: 10.0.0.0/16 • Local company: 10.0.0.0/24 Which of the following can the network engineer do to quickly connect the two companies and minimize user disruption?

A. Assign static routing to advertise the local company's network.

B. Assign an overlapping IP address range to both companies.

C. Assign a new IP address range to the local company.

D. Assign a NAT range to the local company.

Show Answer

Correct Answer: D

Explanation:
The two companies use overlapping IP address space (10.0.0.0/16 and 10.0.0.0/24), which prevents direct routing between them. To quickly connect the networks with minimal user disruption, the best solution is to use NAT for the local company so its internal addresses are translated to a non-overlapping range when communicating with the global company. This avoids renumbering hosts and allows rapid integration. Static routing does not solve overlapping addresses, assigning overlapping ranges is invalid, and renumbering the local company would be disruptive and time-consuming.

Question 9

Developers want to create a mobile application that requires a runtime environment, developer tools, and databases. The developers will not be responsible for security patches and updates. Which of the following models meets these requirements?

A. Container as a service

B. Infrastructure as a service

C. Platform as a service

D. Software as a service

Show Answer

Correct Answer: C

Explanation:
The requirements describe a model that provides a runtime environment, developer tools, and databases while offloading responsibility for security patches and updates from the developers. Platform as a Service (PaaS) is specifically designed for developers and includes managed runtimes, development frameworks, and backend services, with the cloud provider handling OS, middleware, and patching. CaaS and IaaS require more operational responsibility, and SaaS does not provide a development platform.

Question 10

A network administrator is establishing Layer 3 connectivity between Layer 2 segments. Which of the following does the administrator need to complete this task?

A. VIP

B. NAT

C. SVI

D. 802.1Q tagging

Show Answer

Correct Answer: C

Explanation:
To establish Layer 3 connectivity between Layer 2 segments, the device must perform routing between VLANs. This is accomplished on a multilayer switch by configuring an SVI (Switch Virtual Interface), which provides a Layer 3 interface for each VLAN. VIP is unrelated, NAT translates addresses, and 802.1Q tagging only identifies VLAN traffic but does not provide Layer 3 routing.

Question 11

Employees report that website requests are being redirected to other websites that display different content than expected. Which of the following attacks is most likely causing this issue?

A. MAC flooding

B. ARP spoofing

C. DNS poisoning

D. VLAN hopping

Show Answer

Correct Answer: C

Explanation:
Redirection to incorrect or malicious websites despite users requesting legitimate domains is characteristic of DNS poisoning, where DNS responses are altered to map domain names to wrong IP addresses. MAC flooding disrupts switch CAM tables, ARP spoofing enables man-in-the-middle traffic interception, and VLAN hopping targets network segmentation—none directly cause consistent web redirection by name.

Question 12

Which of the following is the best reason to create a golden configuration?

A. To provide configuration consistency

B. To decrease the size of configuration files

C. To increase security by encrypting configurations

D. To set up backup configurations for each device

Show Answer

Correct Answer: A

Explanation:
A golden configuration is a standardized, approved baseline used to ensure all systems are configured consistently. Its primary purpose is to maintain uniformity, reduce configuration drift, and simplify management and troubleshooting. The other options describe different practices (file size reduction, encryption, or backups) that are not the main reason for creating a golden configuration.

Question 13

Which of the following OSI model layers is responsible for determining the most efficient path for frame transfer?

A. 1

B. 2

C. 3

D. 5

Show Answer

Correct Answer: C

Explanation:
Path determination (routing) is a function of the OSI Network layer (Layer 3). While Layer 2 handles frames, it is limited to local link delivery and does not choose end‑to‑end paths. Determining the most efficient path across networks is explicitly a Layer 3 responsibility.

Question 14

An attacker remotely executes a binary file on a server. Which of the following terms describes what the attacker is taking advantage of?

A. Threat

B. Risk

C. Vulnerability

D. Exploit

Show Answer

Correct Answer: D

Explanation:
The scenario describes an attacker remotely executing a binary on a server. The act of taking advantage of a weakness to achieve remote code execution is an exploit. A vulnerability is the underlying weakness, but what the attacker is actively using is the exploit. Therefore, the correct term is Exploit.

Question 15

Which of the following can manage, control, and assist with conditioning power within a data center?

A. Power usage monitor

B. Line voltage monitor

C. Uninterruptible power supply

D. Power distribution unit

Show Answer

Correct Answer: C

Explanation:
A device that manages, controls, and assists with conditioning power is an uninterruptible power supply (UPS). A UPS provides voltage regulation, filtering, and conditioning of incoming power and can actively manage power quality while also supplying backup power during outages. Power distribution units primarily distribute power to equipment and may offer metering, but they are not responsible for full power conditioning.

Question 16

Which of the following enables an organization to leverage an identity provider to manage access across SaaS applications?

A. PKI

B. SSO

C. TACACS+

D. RADIUS

Show Answer

Correct Answer: B

Explanation:
Single Sign-On (SSO) allows an organization to use an identity provider (IdP) to centrally authenticate users and manage access across multiple SaaS applications. RADIUS and TACACS+ are network AAA protocols, and PKI provides certificate-based trust, not centralized SaaS access management.