50 Computer Network Questions and Answers
If you want to learn computer networking and understand it then this is the right place. This article will give you 50 questions and answers on computer networking.
1. What is a network?
Answer: A network is a group of interconnected devices, such as computers or smartphones, that can communicate and share resources.
2. What is a switch?
Answer: A switch is a networking device that connects multiple devices on a network, allowing them to communicate with one another.
3. What is a router?
Answer: A router is a networking device that connects multiple networks, allowing devices on different networks to communicate with one another.
4. What is a firewall?
Answer: A firewall is a security system that controls the incoming and outgoing network traffic based on a set of rules and protocols.
5. What is a protocol?
Answer: A protocol is a set of rules and guidelines that govern how devices on a network communicate with one another.
6. What is an IP address?
Answer: An IP address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
7. What is a subnet mask?
Answer: A subnet mask is a 32-bit value that is used to divide an IP address into a network address and a host address.
8. What is a DNS server?
Answer: A DNS server is a server that is responsible for resolving domain names to IP addresses.
9. What is a DHCP server?
Answer: A DHCP server is a server that automatically assigns IP addresses to devices on a network.
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10. What is an Ethernet cable?
Answer: An Ethernet cable is a type of twisted pair cable used to connect computers and other devices. An Ethernet cable consists of two twisted pairs, with each pair being made up of four wires: two power wires and two signal wires. The first three wires carry data at 10 megabits per second (Mbps). The fourth wire carries power at 100 Mbps or 1 Gbps (1 billion bits per second).
11. What is a VLAN?
Answer: A VLAN is a virtual local area network that allows for the creation of multiple virtual networks on a single physical network.
12. What is a WAN?
Answer: A WAN is a wide area network that connects multiple LANs, allowing devices on different LANs to communicate with one another.
13. What is a LAN?
Answer: A LAN is a local area network that connects devices in a small geographic area, such as a home or office.
14. What is a network topology?
Answer: A network topology is the physical or logical layout of a network, including the location of devices and the connections between them.
15. What is a hub?
Answer: A hub is a networking device that connects multiple devices on a network and broadcasts incoming data to all connected devices.
16. What is a bridge?
Answer: A bridge is a networking device that connects multiple LANs, allowing devices on different LANs to communicate with one another.
17. What is a gateway?
Answer: A gateway is a networking device that connects a LAN to a WAN, allowing devices on the LAN to communicate with devices on the WAN.
18. What is a NIC?
Answer: A NIC is a network interface card, a hardware component that connects a device to a network.
19. What is a port?
Answer: A port is a connection point on a device, such as a computer or a router, that allows for communication with other devices on a network.
20. What is a packet?
Answer: A packet is a unit of data that is transmitted over a network, containing information such as the source and destination address.
21. What is a segment?
Answer: A segment is a portion of a network
22. What is a packet filter?
Answer: A packet filter is a type of firewall that uses rules to block or allow specific types of network traffic.
23. What is a circuit-switched network?
Answer: A circuit-switched network is a type of network in which a dedicated circuit or connection is established for the duration of a communication session.
24. What is a packet-switched network?
Answer: A packet-switched network is a type of network in which data is transmitted in small packets, each with its destination address.
25. What is a circuit-switched vs packet-switched?
Answer: Circuit-switched networks establish a dedicated connection for the duration of a communication session, while packet-switched networks transmit data in small packets with their destination addresses.
26. What is a routing protocol?
Answer: A routing protocol is a set of rules and guidelines that govern how routers on a network share information and determine the best path for data to travel.
27. What is static routing?
Answer: Static routing is a method of routing in which the administrator manually enters the routes into the router’s routing table.
28. What is dynamic routing?
Answer: Dynamic routing is a method of routing in which the routers automatically share information and determine the best path for data to travel.
29. What is a link-state routing protocol?
Answer: A link-state routing protocol is a type of dynamic routing protocol in which each router maintains a map of the entire network and calculates the best path for data to travel.
30. What is a distance-vector routing protocol?
Answer: A distance-vector routing protocol is a type of dynamic routing protocol in which each router maintains information about the distance to other networks and calculates the best path for data to travel.
31. What is an OSI model?
Answer: The OSI model is a conceptual framework that describes the functions of a network at seven different layers, from the physical layer to the application layer.
32. What is a TCP?
Answer: TCP (Transmission Control Protocol) is a transport-layer protocol that is responsible for ensuring the reliable delivery of data over a network.
33. What is a UDP?
Answer: UDP (User Datagram Protocol) is a transport-layer protocol that is responsible for sending and receiving data over a network without the need for a dedicated connection or reliability.
34. What is a FTP?
Answer: FTP (File Transfer Protocol) is a standard protocol for transferring files over a network.
35. What is a HTTP?
Answer: HTTP (Hypertext Transfer Protocol) is a standard protocol for transmitting web pages over the internet.
36. What is a HTTPS?
Answer: HTTPS (HTTP Secure) is a variation of the HTTP protocol that uses SSL or TSL to encrypt data for secure transmission over the internet.
37. What is ICMP?
Answer: ICMP (Internet Control Message Protocol) is a network-layer protocol that is used to send error messages and operational information about network conditions.
38. What is SNMP?
Answer: SNMP (Simple Network Management Protocol) is a standard protocol for managing and monitoring devices on a network.
39. What is a Telnet?
Answer: Telnet is a protocol that allows users to remotely access and control another computer over a network.
40. What is a SSH?
Answer: SSH (Secure Shell) is a protocol that allows users to remotely access and control another computer over a network in a secure manner.
41. What is a NAT?
Answer: NAT (Network Address Translation) is a method of remapping one IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device.
42. What is a VPN?
Answer: VPN (Virtual Private Network) is a private network created within a public network (such as the Internet) that allows users to securely access and share resources, such as files and applications as if they were directly connected to the private network.
43. What is a ARP?
Answer: ARP (Address Resolution Protocol) is a protocol used to map a network address, such as an IP address, to a physical (MAC) address on a LAN.
44. What is multicast?
Answer: Multicast is a method of transmitting a single copy of data to multiple destinations simultaneously over a network.
45. What is a broadcast?
Answer: Broadcast is a method of transmitting data to all devices on a network simultaneously.
46. What is unicast?
Answer: Unicast is a method of transmitting data to a single specific device on a network.
47. What is a EIGRP?
Answer: EIGRP (Enhanced Interior Gateway Routing Protocol) is a Cisco proprietary routing protocol that is based on the principles of distance-vector and link-state routing.
48. What is a OSPF?
Answer: OSPF (Open Shortest Path First) is a routing protocol that is used to distribute routing information within a single autonomous system (AS) in an IP network.
49. What is a BGP?
Answer: BGP (Border Gateway Protocol) is a routing protocol that is used to exchange routing information between routers in different autonomous systems (AS) on the Internet.
50. What is a MPLS?
Answer: MPLS (Multiprotocol Label Switching) is a type of data-carrying mechanism that emulates some properties of a circuit-switched network over a packet-switched network.
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I hope you found these helpful and that the above questions were answered understandably. If there’s anything I missed, let me know.