IT | Computer Networks & Internet Basics
Computer Networks & Internet Basics – 50 One-Liner Q&A
Networking Fundamentals
Q.1. What is a computer network?
Ans. A group of interconnected computers that share resources and data.
Q.2. What is the main purpose of networking?
Ans. Resource sharing and communication.
Q.3. What are the main types of networks?
Ans. LAN, MAN, WAN, PAN.
Q.4. LAN stands for?
Ans. Local Area Network.
Q.5. WAN stands for?
Ans. Wide Area Network.
Network Devices
Q.6. Which device connects multiple computers in a LAN?
Ans. Switch.
Q.7. Which device connects different networks?
Ans. Router.
Q.8. What is the function of a hub?
Ans. Connects multiple computers in a network but broadcasts to all.
Q.9. Which device converts digital signals to analog and vice versa?
Ans. Modem.
Q.10. What is a firewall?
Ans. A security system that controls network traffic.
Networking Models
Q.11. OSI model has how many layers?
Ans. 7 Layers.
Q.12. TCP/IP model has how many layers?
Ans. 4 Layers.
Q.13. Which layer of OSI handles data encryption?
Ans. Presentation Layer.
Q.14. Which layer of OSI is responsible for routing?
Ans. Network Layer.
Q.15. Which layer of OSI deals with error detection?
Ans. Data Link Layer.
IP Addressing & Protocols
Q.16. What does IP stand for?
Ans. Internet Protocol.
Q.17. IPv4 address length is?
Ans. 32 bits.
Q.18. IPv6 address length is?
Ans. 128 bits.
Q.19. What is the range of private IP addresses?
Ans. 10.x.x.x, 172.16.x.x–172.31.x.x, 192.168.x.x.
Q.20. What is DNS used for?
Ans. Converts domain names into IP addresses.
Q.21. What is DHCP used for?
Ans. Assigns IP addresses automatically.
Q.22. What is FTP used for?
Ans. File Transfer Protocol (transfer files over network).
Q.23. What is HTTP used for?
Ans. Hypertext Transfer Protocol (web communication).
Q.24. What is HTTPS?
Ans. Secure version of HTTP using SSL/TLS.
Q.25. What is SMTP used for?
Ans. Simple Mail Transfer Protocol (sending emails).
Networking Technologies
Q.26. What is bandwidth?
Ans. The amount of data transmitted per second.
Q.27. What is latency?
Ans. Time delay in data transmission.
Q.28. What is packet switching?
Ans. Data divided into packets for transfer across networks.
Q.29. What is circuit switching?
Ans. Dedicated communication path between sender and receiver.
Q.30. What is VoIP?
Ans. Voice over Internet Protocol.
Wireless & Internet Basics
Q.31. Wi-Fi stands for?
Ans. Wireless Fidelity.
Q.32. What is Bluetooth?
Ans. Short-range wireless communication technology.
Q.33. What is hotspot?
Ans. Wireless access point providing Internet.
Q.34. What is 5G?
Ans. Fifth generation of mobile network technology.
Q.35. What is ISP?
Ans. Internet Service Provider.
Security in Networks
Q.36. What is a VPN?
Ans. Virtual Private Network (secure encrypted connection).
Q.37. What is phishing?
Ans. Fraudulent attempt to steal sensitive information.
Q.38. What is a Denial-of-Service (DoS) attack?
Ans. Overloading a system to make it unavailable.
Q.39. What is encryption?
Ans. Converting data into a coded form for security.
Q.40. What is a proxy server?
Ans. Server that acts as an intermediary for requests.
Internet History & Standards
Q.41. Who is called the father of the Internet?
Ans. Vint Cerf.
Q.42. Who invented the World Wide Web?
Ans. Tim Berners-Lee.
Q.43. What does URL stand for?
Ans. Uniform Resource Locator.
Q.44. What is WWW?
Ans. World Wide Web – system of interlinked web pages.
Q.45. What does ICANN stand for?
Ans. Internet Corporation for Assigned Names and Numbers.
Miscellaneous
Q.46. What is MAC address?
Ans. Unique hardware address of a network device.
Q.47. What is ping used for?
Ans. To test connectivity between two network devices.
Q.48. What is traceroute?
Ans. Command to trace the path of data packets.
Q.49. What is cloud computing?
Ans. Delivery of services (storage, computing) over the Internet.
Q.50. Example of cloud service providers?
Ans. AWS, Microsoft Azure, Google Cloud.
0 Comments