Networking Basics and OSI Model MCQs 30 Questions
Questions: 30
Questions
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1. What is the primary function of a router in a network?
- a) To connect multiple devices within the same network segment
- b) To forward data packets between different networks
- c) To provide IP addresses to devices
- d) To filter traffic based on IP addresses
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2. Which protocol is used for secure remote login to a network device?
- a) FTP
- b) Telnet
- c) HTTP
- d) SSH
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3. What does the acronym 'LAN' stand for?
- a) Local Area Network
- b) Long Area Network
- c) Light Area Network
- d) Large Area Network
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4. What is the default subnet mask for a Class C IP address?
- a) 255.0.0.0
- b) 255.255.0.0
- c) 255.255.255.0
- d) 255.255.255.255
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5. Which device operates at the Data Link layer of the OSI model?
- a) Router
- b) Hub
- c) Repeater
- d) Switch
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6. What is the primary purpose of the Domain Name System (DNS)?
- a) To assign IP addresses to devices
- b) To route data packets between networks
- c) To translate domain names into IP addresses
- d) To encrypt network communications
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7. Which protocol is used to retrieve email from a mail server?
- a) SMTP
- b) FTP
- c) SNMP
- d) POP3
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8. What does the term 'bandwidth' refer to in networking?
- a) The physical width of a network cable
- b) The delay between data packets
- c) The frequency of the network signal
- d) The amount of data that can be transmitted in a fixed amount of time
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9. Which topology connects all devices in a network to a central hub?
- a) Star topology
- b) Ring topology
- c) Mesh topology
- d) Bus topology
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10. Which protocol is used to send emails?
- a) IMAP
- b) SMTP
- c) HTTP
- d) POP3
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11. What is a MAC address?
- a) An IP address assigned to a computer
- b) A protocol used for accessing web servers
- c) A type of network topology
- d) A unique identifier assigned to network interfaces for communications on the physical network segment
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12. What does the acronym 'WAN' stand for?
- a) Wireless Area Network
- b) Wired Area Network
- c) World Area Network
- d) Wide Area Network
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13. Which device is used to connect two different networks and direct packets between them?
- a) Switch
- b) Router
- c) Bridge
- d) Hub
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14. What is the purpose of a firewall in a network?
- a) To connect multiple devices within the same network
- b) To assign IP addresses to devices
- c) To boost the signal strength in a network
- d) To prevent unauthorized access to or from a private network
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15. Which protocol is used for transferring files over the Internet?
- a) FTP
- b) SNMP
- c) IMAP
- d) SMTP
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16. What is the function of the Network layer in the OSI model?
- a) Data encryption and decryption
- b) Physical addressing
- c) Path determination and logical addressing
- d) Session management
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17. Which of the following is a private IP address?
- a) 192.168.1.1
- b) 172.16.0.1
- c) 10.0.0.1
- d) 8.8.8.8
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18. What does the acronym 'IP' stand for in networking?
- a) Internal Protocol
- b) Internet Protocol
- c) Interconnected Protocol
- d) Interface Protocol
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19. Which protocol is used to dynamically assign IP addresses to devices on a network?
- a) DNS
- b) FTP
- c) HTTP
- d) DHCP
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20. What is the primary function of the Physical layer in the OSI model?
- a) Data encryption
- b) Logical addressing
- c) Session management
- d) Transmission of raw bit streams over a physical medium
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21. Which of the following is a characteristic of a peer-to-peer network?
- a) Each computer can act as both a client and a server
- b) Dedicated server
- c) High cost to implement
- d) Centralized administration
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22. What is the purpose of the Address Resolution Protocol (ARP)?
- a) To map domain names to IP addresses
- b) To assign IP addresses to devices
- c) To route data packets between networks
- d) To map IP addresses to MAC addresses
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23. Which layer of the OSI model is responsible for error detection and correction?
- a) Physical Layer
- b) Network Layer
- c) Transport Layer
- d) Data Link Layer
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24. What does the acronym 'VPN' stand for?
- a) Virtual Public Network
- b) Virtual Protected Network
- c) Virtual Private Network
- d) Virtual Personal Network
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25. Which protocol is used to securely browse the web?
- a) HTTPS
- b) FTP
- c) Telnet
- d) HTTP
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26. What is the function of a subnet mask in IP addressing?
- a) To identify the network and host portions of an IP address
- b) To translate domain names into IP addresses
- c) To encrypt data packets
- d) To assign IP addresses to devices
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27. What is the purpose of NAT (Network Address Translation)?
- a) To assign unique IP addresses to all devices in a network
- b) To encrypt network data
- c) To resolve domain names to IP addresses
- d) To convert private IP addresses to public IP addresses
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28. Which of the following is a function of a switch in a network?
- a) To assign IP addresses
- b) To filter traffic based on IP addresses
- c) To forward data frames based on MAC addresses
- d) To provide wireless access
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29. What is the primary function of a DNS server?
- a) To assign IP addresses to devices
- b) To manage network traffic
- c) To provide wireless internet access
- d) To convert domain names to IP addresses
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30. Which of the following is a common use of a proxy server in a network?
- a) To route data packets between networks
- b) To block access to certain websites
- c) To connect two different networks
- d) To assign IP addresses to devices
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