Welcome to our CompTIA Network+ Certification Practice Test! This test is designed to help you assess your readiness for the Network+ (N10-008) exam, covering essential networking concepts, technologies, and skills. Dive into these 25 multiple-choice questions, each accompanied by an answer and a concise explanation to enhance your understanding. Let’s begin!
1. Which layer of the OSI model is responsible for routing packets between networks?
Answer:
Explanation:
The Network layer (Layer 3) of the OSI model is responsible for routing packets between different networks.
2. Which of the following is a characteristic of a switch?
Answer:
Explanation:
A switch learns MAC addresses of connected devices and forwards frames only to the specific port associated with the destination MAC address.
3. What is the primary function of DNS?
Answer:
Explanation:
DNS (Domain Name System) resolves human-readable domain names to IP addresses, allowing users to access websites using URLs.
4. Which wireless encryption standard is currently considered the most secure?
Answer:
Explanation:
WPA3 (Wi-Fi Protected Access 3) is the latest and most secure wireless encryption standard.
5. What type of cable is used for a 10GBase-T network?
Answer:
Explanation:
Cat6a (Category 6a) cable is used for 10GBase-T networks, supporting data rates up to 10 Gbps.
6. What protocol is used to send email messages from a mail client to a mail server?
Answer:
Explanation:
SMTP (Simple Mail Transfer Protocol) is used to send emails from a client to a server or between servers.
7. Which of the following is a valid IPv6 address?
Answer:
Explanation:
Option A represents a valid IPv6 address. IPv6 addresses are represented as eight groups of four hexadecimal digits.
8. Which device is used to create VLANs in a network?
Answer:
Explanation:
Switches are used to create VLANs (Virtual Local Area Networks) to segment and isolate traffic within a network.
9. What is the purpose of NAT (Network Address Translation)?
Answer:
Explanation:
NAT translates private IP addresses used within a local network to a public IP address for communication over the internet.
10. Which port number is associated with HTTPS?
Answer:
Explanation:
HTTPS (Hypertext Transfer Protocol Secure) uses port number 443.
11. Which network topology is the most fault-tolerant?
Answer:
Explanation:
In a mesh topology, each device is connected to every other device, providing multiple paths for data transmission, making it highly fault-tolerant.
12. Which command is used to display the IP configuration of a Windows computer?
Answer:
Explanation:
The "ipconfig" command is used in Windows to display the IP configuration of the device.
13. What is the function of a VPN (Virtual Private Network)?
Answer:
Explanation:
VPNs are used to create a secure and encrypted connection over the internet, often to connect remote users to a private network.
14. Q: Which of the following is a benefit of using subnets?
Answer:
Explanation:
Subnetting can help in isolating segments of the network, improving security by restricting access to certain resources.
15. In which type of attack does the attacker intercept communication between two parties without their knowledge?
Answer:
Explanation:
In a man-in-the-middle attack, the attacker intercepts and potentially alters the communication between two parties without their knowledge.
16. Which protocol is responsible for logical addressing and routing?
Answer:
Explanation:
IP (Internet Protocol) is responsible for logical addressing and routing of packets across networks.
17. What does the acronym MTU stand for, and what does it represent?
Answer:
Explanation:
MTU stands for Maximum Transmission Unit and represents the largest size packet or frame that can be sent in a network.
18. In a network, what is the role of a firewall?
Answer:
Explanation:
A firewall protects a network by controlling and managing incoming and outgoing network traffic based on predetermined security rules.
19. Which of the following wireless standards operates at 5 GHz frequency?
Answer:
Explanation:
802.11ac is a wireless standard that operates at 5 GHz frequency and offers high data rates.
20. What type of address is FF:FF:FF:FF:FF:FF in a network?
Answer:
Explanation:
FF:FF:FF:FF:FF:FF is a MAC broadcast address used to send data to all devices in a network segment.
21. Which type of cable has a longer transmission distance, single-mode fiber, or multimode fiber?
Answer:
Explanation:
Single-mode fiber cables have a longer transmission distance compared to multimode fiber cables due to a smaller core and lower modal dispersion.
22. What is the purpose of using a subnet mask in IP addressing?
Answer:
Explanation:
A subnet mask is used in IP addressing to identify the network portion and the host portion of an IP address.
23. Which command is used to test network connectivity by sending echo requests?
Answer:
Explanation:
The "ping" command is used to test network connectivity by sending echo requests to a specified network host.
24. What is the default subnet mask for a Class A IP address?
Answer:
Explanation:
The default subnet mask for a Class A IP address is 255.0.0.0.
25. Which of the following topologies is most likely to remain functional if one connection fails?
Answer:
Explanation:
In a mesh topology, devices are interconnected, so the failure of one connection doesn’t affect the overall network, making it highly fault-tolerant.
Completing this practice test brings you closer to mastering the skills and knowledge needed for the CompTIA Network+ certification. Utilize the explanations provided to deepen your understanding of each concept and continue your learning journey. We wish you the best of luck in your upcoming Network+ exam and your future networking endeavours! Keep practicing and stay curious!