NetWo1 Reviewer-Prelim
  • 1. What is a computer network?
A) A system for storing files offline
B) A software used to browse the internet
C) A collection of unrelated computers
D) A group of devices connected to share resources
  • 2. Which of the following is NOT a key component of a network?
A) Operating System
B) Protocols
C) Medium
D) Devices
  • 3. What is the primary advantage of networking?
A) Reduces productivity
B) Increases software costs
C) Increases communication and resource sharing
D) Limits internet access
  • 4. Which of the following is an example of resource sharing?
A) Copying files manually from one device to another
B) Using a USB drive to transfer files
C) Printing from multiple devices using a single printer
D) Storing documents on a local computer
  • 5. Which protocol defines the rules for internet communication?
A) TCP/IP
B) JPEG
C) USB
D) HTML
  • 6. Which device assigns dynamic IP addresses?
A) Firewall
B) Router
C) DHCP Server
D) DNS Server
  • 7. How many bits are in an IPv4 address?
A) 16
B) 128
C) 64
D) 32
  • 8. What is the primary difference between IPv4 and IPv6?
A) IPv6 only works on wireless networks
B) IPv4 supports encryption while IPv6 does not
C) IPv4 is faster than IPv6
D) IPv6 supports larger address space than IPv4
  • 9. Which of the following is a private IP address range?
A) 192.168.1.1
B) 203.0.113.10
C) 200.0.0.1
D) 8.8.8.8
  • 10. What is the main function of NAT (Network Address Translation)?
A) Converts private IP addresses to public IP addresses
B) Encrypts network traffic
C) Blocks unauthorized devices
D) Assigns MAC addresses
  • 11. What does a firewall do?
A) Assigns MAC addresses
B) Boosts Wi-Fi signals
C) Blocks unauthorized network access
D) Converts IP addresses
  • 12. Which organization defines internet protocols?
A) W3C
B) ISO
C) IETF
D) IEEE
  • 13. What is MAC spoofing?
A) Encrypting network data
B) Changing an IP address
C) Faking a device’s MAC address
D) Blocking a device from the network
  • 14. What is the main advantage of a VPN?
A) Eliminates IP addressing
B) Secure, encrypted communication
C) Lower hardware costs
D) Faster network speeds
  • 15. What is the purpose of a proxy server?
A) Acts as an intermediary for network requests
B) Converts digital signals to analog
C) Manages Bluetooth connections
D) Assigns MAC addresses
  • 16. Which device forwards data based on MAC addresses?
A) Hub
B) Router
C) Modem
D) Switch
  • 17. What is the purpose of an access point?
A) Extends wireless network coverage
B) Encrypts data
C) Manages network security
D) Assigns IP addresses
  • 18. What does a router do?
A) Directs data between networks
B) Encrypts network traffic
C) Converts data into signals
D) Assigns MAC addresses
  • 19. Which device is commonly used to prevent unauthorized access to a network?
A) Modem
B) Repeater
C) Firewall
D) Hub
  • 20. What is a modem used for?
A) Storing network data
B) Filtering unauthorized traffic
C) Assigning MAC addresses
D) Converting digital data to analog and vice versa
  • 21. Which topology connects all devices to a central hub?
A) Bus
B) Mesh
C) Ring
D) Star
  • 22. Which topology has a single point of failure in the central cable?
A) Mesh
B) Bus
C) Star
D) Hybrid
  • 23. Which topology is best for redundancy?
A) Bus
B) Ring
C) Mesh
D) Star
  • 24. Which topology forms a loop where each device is connected to two others?
A) Ring
B) Bus
C) Mesh
D) Star
  • 25. What is a hybrid topology?
A) A network without wired connections
B) A network that does not use a central hub
C) A combination of two or more topologies
D) A topology used in data centers only
  • 26. What is the main function of a firewall?
A) Increasing network speed
B) Storing network data
C) Assigning MAC addresses
D) Filtering network traffic
  • 27. Which of the following can slow down a network?
A) Using fiber optics
B) High bandwidth
C) High latency
D) Strong security
  • 28. Which device reduces congestion by forwarding packets to specific devices?
A) Router
B) Switch
C) Repeater
D) Hub
  • 29. What does QoS (Quality of Service) do in a network?
A) Encrypts all data
B) Prioritizes certain types of traffic
C) Assigns static IP addresses
D) Converts network signals
  • 30. Which factor affects internet speed the most?
A) File type
B) Device name
C) MAC address
D) Signal strength
  • 31. What does OSI stand for?
A) Open Systems Internet
B) Online Security Integration
C) Operational Systems Infrastructure
D) Open Systems Interconnection
  • 32. How many layers are in the OSI model?
A) 7
B) 6
C) 4
D) 5
  • 33. Which layer is responsible for the physical transmission of data?
A) Physical
B) Data Link
C) Network
D) Transport
  • 34. Which layer handles routing of data between different networks?
A) Transport
B) Application
C) Network
D) Data Link
  • 35. What is the primary function of the OSI model?
A) To increase internet speed
B) To replace all other networking models
C) To provide standardization for network communication
D) To encrypt all network data
  • 36. Which layer ensures reliable communication and manages flow control?
A) Data Link
B) Network
C) Transport
D) Physical
  • 37. What is the main function of the Data Link Layer?
A) Managing end-user applications
B) MAC addressing and error detection
C) Encrypting network traffic
D) Assigning IP addresses
  • 38. Which OSI layer manages encryption and data formatting?
A) Network
B) Presentation
C) Transport
D) Application
  • 39. What is the role of the Session Layer?
A) Assigns MAC addresses to devices
B) Encrypts and compresses data
C) Establishes, maintains, and terminates communication sessions
D) Controls routing of packets
  • 40. Which layer interacts directly with end-user applications?
A) Network
B) Application
C) Transport
D) Physical
  • 41. Which protocol is used for routing at the Network Layer?
A) IP
B) HTTP
C) SMTP
D) FTP
  • 42. Which protocol is used at the Transport Layer for reliable communication?
A) ARP
B) TCP
C) ICMP
D) UDP
  • 43. Which of the following protocols is used to resolve IP addresses to MAC addresses?
A) DNS
B) ARP
C) FTP
D) HTTP
  • 44. Which layer of the OSI model is responsible for breaking data into packets?
A) Network
B) Data Link
C) Application
D) Transport
  • 45. Which of the following is a real-world application of the OSI model?
A) Managing database queries
B) Designing graphics for applications
C) Diagnosing network issues
D) Creating new programming languages
  • 46. A network that spans a larger area than a LAN, typically a city or a large campus.
A) MAN
B) WAN
C) VPN
D) PAN
E) LAN
  • 47. A network that connects devices within a limited geographic area, such as a home, office, or school.
A) VPN
B) MAN
C) WAN
D) PAN
E) LAN
  • 48. A network that spans large geographical areas, such as countries or continents.
A) PAN
B) MAN
C) LAN
D) WAN
E) VPN
  • 49. Connects devices within a short range (Bluetooth devices, personal hotspots).
A) LAN
B) MAN
C) VPN
D) WAN
E) PAN
  • 50. Creates a secure, encrypted connection over public networks for private data transmission.
A) LAN
B) MAN
C) VPN
D) WAN
E) PAN
  • 51. A simple networking device that connects multiple devices in a network but does not have the intelligence of a switch. It broadcasts incoming data to all connected devices.
A) Modem
B) Access Point
C) Router
D) Switches
E) Hubs
  • 52. This address is used to identify devices on a local network (like LANs) and ensure that data is sent to the correct destination within the network.
A) MAC Address
B) Lan Address
C) IP Address
  • 53. Develops global technical standards, including for networking
A) W3C
B) IEEE
C) IETF
D) ISO
  • 54. Defines technical standards, especially for network hardware and wireless communication.
A) IEEE
B) ISO
C) W3C
D) IETF
  • 55. A small chunk of data sent over the network. Large files are broken into multiple packets for transmission.
A) Data
B) Information
C) Data Packets
D) Packets
  • 56. A device that allows wireless devices to connect to a wired network via Wi-Fi or other wireless standards.
A) Modem
B) Access Point
C) Switches
D) Router
E) Repeater
  • 57. What is the largest example of a WAN.
A) SpaceX
B) Google
C) Internet
D) YouTube
  • 58. A type of copper cabling used in networking. It consists of pairs of wires twisted together to reduce electromagnetic interference (EMI).
A) Shielded Twisted Pair (STP)
B) Unshielded Twisted Pair (UTP)
C) Fiber Optic Cables
  • 59. similar to UTP but with an additional layer of shielding around the twisted pairs to further reduce interference.
A) Unshielded Twisted Pair (UTP)
B) Fiber Optic Cables
C) Shielded Twisted Pair (STP)
  • 60. This use light to transmit data, rather than electrical signals. They offer significantly higher bandwidth and longer transmission distances than copper cables.
A) Fiber Optic Cables
B) Shielded Twisted Pair (STP)
C) Unshielded Twisted Pair (UTP)
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