MCQs

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1. Which of the following best defines a public network in networking?
   a. It is a network accessible to the general public and interconnects multiple devices globally.
   b. It is a network restricted to a specific organization.
   c. It is a network used only for private home connections.
   d. It is a network without any security measures.
   Answer: a. It is a network accessible to the general public and interconnects multiple devices globally.tencentcloud+1
2. Which communication protocol is primarily used by public networks for data transmission?
   a. TCP/IP
   b. Bluetooth
   c. Token Ring
   d. FDDI
   Answer: a. TCP/IPtencentcloud
3. Which of the following is NOT a characteristic of a public network?
   a. Open access
   b. High customization for organizations
   c. Global reach
   d. Variable performance due to many users
   Answer: b. High customization for organizationstecknexus
4. Public networks are often referred to as:
   a. The Internet
   b. Intranet
   c. Local Area Network
   d. Virtual Private Network
   Answer: a. The Internettencentcloud
5. Which device typically connects a user’s local network to a public network?
   a. Router
   b. Switch
   c. Access Point
   d. Bridge
   Answer: a. Routeruninets+1
6. What major risk is associated with connecting to a public network?
   a. Increased vulnerability to cyber attacks
   b. Lack of device compatibility
   c. Inability to access the Internet
   d. Limited network bandwidth always
   Answer: a. Increased vulnerability to cyber attacksinseego+1
7. A public IP address is:
   a. Routable over the Internet
   b. Only used within private networks
   c. Always assigned manually
   d. Not recognized by Internet routers
   Answer: a. Routable over the Internetgeeksforgeeks
8. Which of the following is an example of a public network?
   a. Public Wi-Fi at an airport
   b. Company intranet
   c. Home network with password protection
   d. VPN tunnel
   Answer: a. Public Wi-Fi at an airportinseego
9. What is one advantage of using a public network?
   a. Wide coverage and accessibility
   b. Guaranteed security
   c. Full control over configuration
   d. Reserved bandwidth for each user
   Answer: a. Wide coverage and accessibilitytecknexus
10. In public networks, who is responsible for most maintenance and management efforts?
    a. The network provider
    b. The end user
    c. The device manufacturer
    d. The network administrator of each device
    Answer: a. The network providertecknexus
11. Which statement about security on public networks is correct?
    a. Users have little control over security settings
    b. Security is entirely managed by the user
    c. Public networks enforce strict access controls
    d. Access is monitored individually by each user
    Answer: a. Users have little control over security settingsnybsys+1
12. The main difference between public and private networks is:
    a. Accessibility to a broad public user base
    b. Transmission speed
    c. Type of devices used
    d. Network topology used
    Answer: a. Accessibility to a broad public user basenybsys
13. Which of the following services may be at risk when accessed via a public network?
    a. Email services
    b. Document printing locally
    c. Internal file transfers within home LAN
    d. Bluetooth pairing
    Answer: a. Email servicesinseego
14. What should users enable to stay safer when using public networks?
    a. Virtual Private Network (VPN)
    b. MAC address filtering
    c. DHCP server
    d. Static routing
    Answer: a. Virtual Private Network (VPN)tencentcloud+1
15. Which of these is true about bandwidth on public networks?
    a. It is shared among many users, potentially causing slowdowns.
    b. It is guaranteed per individual device.
    c. It is always higher than private networks.
    d. It is fixed and unchangeable.
    Answer: a. It is shared among many users, potentially causing slowdowns.tecknexus+1
16. Why are public networks preferred by many businesses for guest Internet access?
    a. Easy deployment and broad compatibility
    b. Strong control by the user
    c. 24/7 exclusive bandwidth
    d. Complete customization options
    Answer: a. Easy deployment and broad compatibilitytecknexus
17. Which type of address does a public network typically assign to users?
    a. Public IP address
    b. Private IP address
    c. Loopback address
    d. Multicast address
    Answer: a. Public IP addressgeeksforgeeks
18. Which entity typically manages a public network?
    a. Internet Service Provider (ISP)
    b. Individual user
    c. In-house IT only
    d. Home router administrator
    Answer: a. Internet Service Provider (ISP)inseego
19. Public networks are most susceptible to which of the following?
    a. Eavesdropping and man-in-the-middle attacks
    b. Hardware failure only
    c. Data loss due to lightning
    d. Application layer errors only
    Answer: a. Eavesdropping and man-in-the-middle attacksnybsys+1
20. What is an example of a global public network?
    a. The Internet
    b. Enterprise LAN
    c. Bluetooth PAN
    d. Home Wi-Fi with WPA2
    Answer: a. The Internetwikipedia+1
21. What layer of the OSI model primarily deals with the functioning of public networks?
    a. Network layer
    b. Physical layer
    c. Data Link layer
    d. Application layer
    Answer: a. Network layerccbp
22. Why is authentication especially important when using public networks?
    a. It helps protect data from unauthorized access.
    b. It always increases bandwidth.
    c. It guarantees free Internet.
    d. It prevents hardware failure.
    Answer: a. It helps protect data from unauthorized access.nybsys
23. Public networks are least likely to offer:
    a. Custom security configurations for each user
    b. Wide accessibility to users
    c. Shared network resources
    d. Support for standard protocols
    Answer: a. Custom security configurations for each usertecknexus
24. A primary disadvantage of public networks is:
    a. Higher risk of data breaches
    b. Lower user density
    c. Built-in strong encryption for each session
    d. One-to-one device isolation by default
    Answer: a. Higher risk of data breachesinseego
25. The main reason for slowdowns on public networks is:
    a. Network congestion from many users
    b. Outdated device drivers
    c. Fixed length cabling
    d. Unusual IP addressing
    Answer: a. Network congestion from many usersnybsys+1
26. Which type of network is most commonly used in public places like cafes and hotels?
    a. Public Wi-Fi networks
    b. Private Intranets
    c. VPN-only connections
    d. Fiber-channel networks
    Answer: a. Public Wi-Fi networksinseego+1
27. Network traffic on a public network can be intercepted by attackers because:
    a. Data is often unencrypted
    b. Only trusted users are permitted
    c. Data never passes through routers
    d. Encryption is forced on all traffic
    Answer: a. Data is often unencryptedsciencedirect+1
28. The term ‘public data network’ commonly refers to:
    a. Telecommunications network offering data transmission to the public
    b. Home LAN using private IP addresses
    c. Encrypted private network
    d. Dedicated network for military use
    Answer: a. Telecommunications network offering data transmission to the publicwikipedia
29. A typical public network does NOT provide:
    a. Control over network configuration to end users
    b. Internet connectivity
    c. DHCP address assignment
    d. Shared access to cloud services
    Answer: a. Control over network configuration to end usersnybsys+1
30. Which port is typically open on public Wi-Fi for general web traffic?
    a. 80 (HTTP)
    b. 25 (SMTP)
    c. 69 (TFTP)
    d. 22 (SSH)
    Answer: a. 80 (HTTP)ccbp
31. Communication across public networks relies on:
    a. Standardized protocols
    b. Custom protocols for each user
    c. Proprietary standards only
    d. Encrypted layer only
    Answer: a. Standardized protocolstencentcloud
32. On public networks, users should avoid:
    a. Sensitive transactions without encryption
    b. Browsing public websites
    c. Using wireless connections
    d. Downloading large files
    Answer: a. Sensitive transactions without encryptionsciencedirect+1
33. One method to securely use public networks for remote access is to:
    a. Use a VPN connection
    b. Turn off DHCP
    c. Disable all firewalls
    d. Assign a static IP
    Answer: a. Use a VPN connectiontencentcloud+1
34. The quality of service in public networks is:
    a. Variable, depending on the number of users
    b. Always guaranteed
    c. Fixed at the highest speed
    d. Lower than satellite networks by default
    Answer: a. Variable, depending on the number of userstecknexus
35. Public versus private network addressing primarily differs by:
    a. Scope and routability over the Internet
    b. Physical cabling used
    c. The number of connected devices
    d. Wireless frequency only
    Answer: a. Scope and routability over the Internetgeeksforgeeks+1
36. Which service may provide added privacy while using public networks?
    a. Secure Web Proxy
    b. Portable Bluetooth network
    c. Print spooling server
    d. Unencrypted DNS
    Answer: a. Secure Web Proxytencentcloud+1
37. The transition from IPv4 to IPv6 improves public networks by:
    a. Allowing more devices to connect using public IP addresses
    b. Removing all security risks
    c. Forcing all users to use private networks
    d. Limiting the use of wireless transport
    Answer: a. Allowing more devices to connect using public IP addressesccbp
38. In a public network context, what is “public Wi-Fi”?
    a. A wireless network accessible to anyone in a given area
    b. A secured private WLAN
    c. Only available to government employees
    d. Used solely for Bluetooth connections
    Answer: a. A wireless network accessible to anyone in a given areainseego
39. Which option best manages the risks of data theft on public networks?
    a. Encryption of transmitted data
    b. Open, unauthenticated access
    c. Disabling firewalls
    d. Connecting to any available Wi-Fi without concern
    Answer: a. Encryption of transmitted datasciencedirect+1
40. A public network is the preferred choice when:
    a. Broad accessibility to diverse users is required
    b. Only selected users are to be connected
    c. Internal data must remain confidential
    d. High customization is needed
    Answer: a. Broad accessibility to diverse users is requirednybsys+1
41. Which of the following is a common threat on public networks?
    a. Packet sniffing and session hijacking
    b. Frequent cable breakage
    c. Too many static IP addresses
    d. Lack of DHCP on devices
    Answer: a. Packet sniffing and session hijackinginseego+1
42. The earliest public data networks used which protocol suite?
    a. X.25
    b. Bluetooth
    c. USB
    d. FireWire
    Answer: a. X.25wikipedia
43. Connecting to a public network generally means:
    a. Device visibility to other untrusted devices may increase
    b. The device is isolated from all other devices
    c. No Internet access is provided
    d. IP address is never publicly routed
    Answer: a. Device visibility to other untrusted devices may increasereddit+1
44. Which of the following does NOT describe a public network?
    a. Exclusive to a single organization
    b. Accessible globally
    c. Managed by an external provider
    d. Can link to other networks or the Internet
    Answer: a. Exclusive to a single organizationnybsys+1
45. What solution can users adopt to provide security over public networks?
    a. End-to-end encryption
    b. Disabling browser protection
    c. Using untested protocols
    d. Ignoring software updates
    Answer: a. End-to-end encryptionsciencedirect+1
46. Which of the following is NOT a recommended practice on public networks?
    a. Sharing sensitive information without encryption
    b. Using two-factor authentication
    c. Accessing only HTTPS sites
    d. Installing security updates
    Answer: a. Sharing sensitive information without encryptionsciencedirect+1
47. The widespread availability of public networks has enabled:
    a. Global connectivity and communication
    b. Elimination of all malware risks
    c. Guaranteed privacy for all users
    d. Restricted access to only paid users
    Answer: a. Global connectivity and communicationtencentcloud+1
48. In the context of public networks, which term refers to a connection made by businesses to serve customers, such as at airports or hotels?
    a. Hotspot
    b. VLAN
    c. VPN Gateway
    d. Mesh node
    Answer: a. Hotspotinseego
49. The Internet became possible largely due to the evolution of:
    a. Public data networks
    b. Private serial cables
    c. Bluetooth
    d. Proprietary local connections
    Answer: a. Public data networkswikipedia+1
50. For personal privacy on public Wi-Fi networks, which measure is most effective?
    a. Using a VPN to encrypt traffic
    b. Broadcasting the computer’s name openly
    c. Ignoring all security warnings
    d. Disabling all security software
    Answer: a. Using a VPN to encrypt traffictecknexus+2

1. https://www.tencentcloud.com/techpedia/109203
2. https://nybsys.com/difference-between-public-and-private-network/
3. https://tecknexus.com/5g-network/private-networks-public-wireless-networks-pros-and-cons/
4. https://www.uninets.com/blog/computer-networks-mcq
5. https://www.ccbp.in/blog/articles/computer-network-mcq
6. https://inseego.com/resources/blog/private-vs-public-networks/
7. https://www.geeksforgeeks.org/computer-networks/difference-between-private-and-public-ip-addresses/
8. https://en.wikipedia.org/wiki/Public_data_network
9. https://www.sciencedirect.com/topics/computer-science/public-networks
10. https://www.reddit.com/r/Network/comments/1bxjpe2/windows_public_vs_private_networks/
11. https://www.sanfoundry.com/computer-network-questions-answers/
12. https://www.interviewbit.com/computer-network-mcq/
13. https://testbook.com/objective-questions/mcq-on-networking–5eea6a1639140f30f369f551
14. https://www.geeksforgeeks.org/quizzes/50-computer-networks-mcqs-with-answers/
15. https://www.gdcramban.in/MCQ/networkmcq.pdf
16. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
17. https://learn.microsoft.com/en-us/answers/questions/4047393/could-i-get-a-straight-answer-re-private-vs-public
18. https://www.scribd.com/document/507960859/Computer-Network-MCQ-ANSWERS
19. https://www.digi.com/blog/post/private-network-vs-public-network
20. https://www.watelectronics.com/mcq/network-devices/