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CompTIA Network+ Practice Questions: Networking Fundamentals Domain

Test your CompTIA Network+ knowledge with 10 practice questions from the Networking Fundamentals domain. Includes detailed explanations and answers.

CompTIA Network+ Practice Questions

Master the Networking Fundamentals Domain

Test your knowledge in the Networking Fundamentals domain with these 10 practice questions. Each question is designed to help you prepare for the CompTIA Network+ certification exam with detailed explanations to reinforce your learning.

Question 1

A network engineer is tasked with implementing a network that requires minimal latency and high throughput. Which type of cable should they use for the backbone? A. Cat 5e B. Cat 6a C. Single-mode fiber D. Multi-mode fiber

A) Cat 5e

B) Cat 6a

C) Single-mode fiber

D) Multi-mode fiber

Show Answer & Explanation

Correct Answer: C

Explanation: Single-mode fiber is ideal for backbone connections due to its ability to support high throughput and minimal latency over long distances, making it suitable for high-performance network requirements.

Question 2

A network technician needs to ensure that a specific host can communicate with another host on a different VLAN. What network device configuration is necessary to achieve this?

A) Configure a static route on the switch

B) Enable trunking on the switch ports

C) Assign both hosts to the same VLAN

D) Configure the router for inter-VLAN routing

Show Answer & Explanation

Correct Answer: D

Explanation: Inter-VLAN routing is required to allow communication between hosts on different VLANs. This is typically achieved by configuring a router or a Layer 3 switch to route traffic between VLANs.

Question 3

A technician needs to connect two devices using a copper cable over a distance of 70 meters. Which cable type would be most appropriate for this scenario?

A) Cat 5e

B) Cat 6

C) Cat 6a

D) Cat 7

Show Answer & Explanation

Correct Answer: B

Explanation: Cat 6 cables are suitable for distances up to 100 meters for gigabit Ethernet and are more than adequate for a 70-meter connection, offering a good balance of performance and cost.

Question 4

You are given the task of connecting two buildings with fiber optic cables. The distance between the buildings is 550 meters. Which type of fiber optic cable should you choose to ensure reliable connectivity?

A) Single-mode fiber

B) Multi-mode fiber

C) Cat 6 Ethernet cable

D) Coaxial cable

Show Answer & Explanation

Correct Answer: B

Explanation: Multi-mode fiber is suitable for distances up to 600 meters for most applications and is often used for shorter distances like this. Single-mode fiber is used for longer distances.

Question 5

An organization is using both IPv4 and IPv6 addresses. Which of the following describes a dual-stack implementation?

A) Running IPv4 and IPv6 simultaneously on the same network interfaces

B) Translating IPv4 addresses to IPv6 addresses

C) Tunneling IPv6 packets over an IPv4 network

D) Using NAT to convert between IPv4 and IPv6

Show Answer & Explanation

Correct Answer: A

Explanation: Dual-stack implementation allows devices to run IPv4 and IPv6 protocols simultaneously on the same network interfaces, facilitating communication over both types of networks.

Question 6

A network administrator is implementing IPv6. Which of the following is a valid IPv6 address?

A) 2001:0db8:85a3:0000:0000:8a2e:0370:7334

B) 192.168.1.1

C) 2001:0db8:85a3::8a2e:0370:7334:12345

D) FE80::0202:B3FF:FE1E:8329:0000

Show Answer & Explanation

Correct Answer: A

Explanation: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 is a valid IPv6 address. Option B is an IPv4 address, Option C is invalid due to too many segments, and Option D is incorrectly formatted as it has too many segments.

Question 7

A network administrator needs to calculate the network address for the IP address 192.168.10.77 with a subnet mask of 255.255.255.240. What is the network address?

A) 192.168.10.64

B) 192.168.10.65

C) 192.168.10.70

D) 192.168.10.72

Show Answer & Explanation

Correct Answer: A

Explanation: The subnet mask 255.255.255.240 corresponds to a /28 prefix, providing 16 IP addresses per subnet. The network address for 192.168.10.77 in this subnet is 192.168.10.64.

Question 8

A network engineer needs to ensure that traffic between two VLANs is not only routed but also filtered based on certain criteria. Which device should they use to achieve this?

A) Router with ACLs

B) Layer 2 Switch

C) Hub

D) Repeater

Show Answer & Explanation

Correct Answer: A

Explanation: A router with Access Control Lists (ACLs) can route traffic between VLANs and apply filtering rules to control the flow of traffic based on specified criteria.

Question 9

You are configuring a network that requires redundancy and load balancing across multiple links. Which topology would be most suitable for this requirement?

A) Bus

B) Star

C) Mesh

D) Ring

Show Answer & Explanation

Correct Answer: C

Explanation: A Mesh topology provides redundancy and load balancing because each node is connected to multiple other nodes, allowing for multiple paths for data to travel. This setup enhances fault tolerance and load distribution.

Question 10

Given the subnet mask 255.255.255.224, how many usable host addresses are available on this subnet?

A) 6

B) 14

C) 30

D) 62

Show Answer & Explanation

Correct Answer: C

Explanation: The subnet mask 255.255.255.224 corresponds to /27, which provides 32 IP addresses per subnet. Subtracting 2 for the network and broadcast addresses leaves 30 usable host addresses.

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About CompTIA Network+ Certification

The CompTIA Network+ certification validates your expertise in networking fundamentals and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.