CompTIA Tech+ Practice Questions: Networking

21 free, exam-style CompTIA Tech+ (FC0-U71) practice questions covering Networking, each with the correct answer and an explanation. Start a timed exam below, or scroll on to read through the questions.

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Networking practice questions

Answers and explanations are shown. Take the timed exam above to test yourself first.

Q1. What does 'HTTP' stand for?

  • A.HyperText Transfer Protocol✓ Correct
  • B.Hyperlink Text Transmission Process
  • C.High-Tech Transfer Protocol
  • D.Host-to-Target Transmission Process
Explanation: HTTP stands for HyperText Transfer Protocol, used for web communication. Learn more.

Q2. Which of the following is a common wireless networking standard?

  • A.Ethernet
  • B.Bluetooth✓ Correct
  • C.USB
  • D.HDMI
Explanation: Bluetooth is a wireless standard for short-range communication. Learn more.

Q3. What is the primary purpose of an IP address?

  • A.Identify a website's owner
  • B.Locate a device on a network✓ Correct
  • C.Encrypt data transmissions
  • D.Store user passwords
Explanation: An IP address uniquely identifies a device on a network. Learn more.

Q4. What is the function of a DNS server?

  • A.Store website files
  • B.Translate domain names to IP addresses✓ Correct
  • C.Block malicious traffic
  • D.Provide cloud storage
Explanation: DNS (Domain Name System) converts human-readable domain names (e.g., google.com) to IP addresses. Learn more.

Q5. What is the primary function of a router?

  • A.Connect devices within a LAN
  • B.Forward data between networks✓ Correct
  • C.Store website data
  • D.Block viruses
Explanation: Routers direct traffic between different networks (e.g., home network and the internet). Learn more.

Q6. Which protocol is used to send email?

  • A.HTTP
  • B.FTP
  • C.SMTP✓ Correct
  • D.DNS
Explanation: SMTP (Simple Mail Transfer Protocol) is used for sending email. Learn more.

Q7. What does 'IoT' stand for?

  • A.Internet of Things✓ Correct
  • B.Input/Output Technology
  • C.Integrated Online Testing
  • D.Internal Operating Timer
Explanation: IoT refers to network-connected physical devices like smart appliances. Learn more.

Q8. Which port number is typically used for HTTPS?

  • A.80
  • B.21
  • C.443✓ Correct
  • D.25
Explanation: HTTPS uses port 443 by default for secure web traffic. Learn more.

Q9. What is the main advantage of peer-to-peer (P2P) networking?

  • A.Centralized administration
  • B.No need for dedicated servers✓ Correct
  • C.Higher security than client-server
  • D.Faster internet speeds
Explanation: P2P networks allow devices to communicate directly without a central server. Learn more.

Q10. What is the purpose of an IP config command?

  • A.Install network drivers
  • B.Display network adapter information✓ Correct
  • C.Create new user accounts
  • D.Format hard drives
Explanation: ipconfig shows current network configuration in Windows. Learn more.

Q11. Which of these is a private IP address range?

  • A.192.168.0.0 - 192.168.255.255✓ Correct
  • B.200.100.50.0 - 200.100.50.255
  • C.100.50.25.0 - 100.50.25.255
  • D.15.20.25.0 - 15.20.25.255
Explanation: 192.168.x.x is reserved for private networks. Learn more.

Q12. What is the purpose of a subnet mask?

  • A.Identify the network portion of an IP address✓ Correct
  • B.Encrypt network traffic
  • C.Increase internet speed
  • D.Block specific websites
Explanation: Subnet masks distinguish network and host portions of IP addresses. Learn more.

Q13. Which protocol is used for file transfers?

  • A.HTTP
  • B.FTP✓ Correct
  • C.SMTP
  • D.DHCP
Explanation: FTP (File Transfer Protocol) is specialized for file transfers. Learn more.

Q14. What is the purpose of a MAC address?

  • A.Identify a network
  • B.Uniquely identify a network interface✓ Correct
  • C.Route internet traffic
  • D.Encrypt wireless signals
Explanation: MAC addresses are hardware identifiers for network devices. Learn more.

Q15. Which of these is a common network topology?

  • A.Linear✓ Correct
  • B.Spherical
  • C.Pyramid
  • D.Circular
Explanation: Common topologies include star, bus, ring, and mesh. Learn more.

Q16. What is the purpose of a proxy server?

  • A.Accelerate CPU performance
  • B.Act as an intermediary for requests✓ Correct
  • C.Increase hard drive capacity
  • D.Cool network equipment
Explanation: Proxy servers intermediate between clients and other servers. Learn more.

Q17. Which of these is a characteristic of IPv6?

  • A.32-bit addresses
  • B.Smaller address space than IPv4
  • C.128-bit addresses✓ Correct
  • D.No support for multicast
Explanation: IPv6 uses 128-bit addresses to solve IPv4 limitations. Learn more.

Q18. Which network device connects a home network to an Internet service provider?

  • A.Router✓ Correct
  • B.Scanner
  • C.Keyboard
  • D.External hard drive
Explanation: A router forwards traffic between the local network and external networks such as the Internet. Learn more.

Q19. Which address type is used to identify a device on an IP network?

  • A.IP address✓ Correct
  • B.File extension
  • C.Font name
  • D.Battery serial only
Explanation: IP addresses identify hosts and networks for packet delivery. Learn more.

Q20. Which unit is commonly used to describe network speed?

  • A.Megabits per second✓ Correct
  • B.Degrees Celsius
  • C.Pages per minute only
  • D.Dots per inch only
Explanation: Network throughput is commonly measured in bits per second, such as Mbps or Gbps. Learn more.

Q21. Which cable type is commonly used to connect a computer to a wired LAN?

  • A.Ethernet cable✓ Correct
  • B.HDMI cable only
  • C.Power cable only
  • D.Audio cable
Explanation: Ethernet cables connect devices to wired local area networks. Learn more.

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