Networking Basics IP Addressing, Subnetting and Routing MCQs
Questions: 30
Questions
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1. What does an IP address represent?
- a) A physical address of a device in a network
- b) A type of network cable
- c) A protocol for transferring data packets
- d) A unique identifier for a device on a network
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2. Which class of IP address is used for private networks?
- a) Class A
- b) Class B
- c) Class C
- d) Class D
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3. Which IP address range is reserved for private networks in Class A?
- a) 192.168.0.0 to 192.168.255.255
- b) 172.16.0.0 to 172.31.255.255
- c) 224.0.0.0 to 239.255.255.255
- d) 10.0.0.0 to 10.255.255.255
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4. What is the default subnet mask for a Class A 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. What does CIDR stand for in IP addressing?
- a) Classful Internet Data Routing
- b) Constant Inter-Domain Routing
- c) Centralized Internet Data Routing
- d) Classless Inter-Domain Routing
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6. What is the purpose of a subnet mask?
- a) To identify the network portion of an IP address
- b) To encrypt network data
- c) To assign MAC addresses to devices
- d) To dynamically assign IP addresses
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7. Which of the following IP addresses is a valid Class C private address?
- a) 192.168.1.1
- b) 10.0.0.1
- c) 172.16.0.1
- d) 200.100.50.25
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8. What is the term used for the number of bits that represent the network portion in a subnet mask?
- a) Subnet bits
- b) Host bits
- c) Address bits
- d) Network bits
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9. Which of the following is a valid IP address for a Class B network?
- a) 192.168.0.1
- b) 172.16.5.6
- c) 224.0.0.1
- d) 10.1.1.1
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10. What is the valid range of IP addresses for a Class A network?
- a) 128.0.0.0 to 191.255.255.255
- b) 192.0.0.0 to 223.255.255.255
- c) 224.0.0.0 to 239.255.255.255
- d) 0.0.0.0 to 127.255.255.255
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11. What is the first step in the routing process for a data packet?
- a) The data is sent to the correct IP address
- b) The router looks at the destination MAC address
- c) The router checks the destination IP address
- d) The data is encrypted
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12. What is the purpose of a default gateway in a network?
- a) To provide DNS resolution
- b) To assign IP addresses
- c) To prevent unauthorized access
- d) To route traffic from a local network to external networks
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13. Which of the following best describes static routing?
- a) The routing table is automatically updated
- b) Routing decisions are made based on the shortest path
- c) Routes change dynamically based on network conditions
- d) Routes are manually configured by the network administrator
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14. What is the main purpose of the Routing Information Protocol (RIP)?
- a) To assign IP addresses to devices
- b) To enable secure communications over a network
- c) To encrypt data packets
- d) To route data packets between networks
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15. What is an example of a network address?
- a) 192.168.1.255
- b) 10.0.0.0
- c) 255.255.255.0
- d) 172.16.5.10
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16. What is the purpose of the IP address range 169.254.x.x?
- a) It is used for public networks
- b) It is used for automatic private IP addressing (APIPA)
- c) It is reserved for private networks
- d) It is reserved for multicast communication
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17. What is the subnet mask for the IP address 192.168.1.10 with a /24 prefix?
- a) 255.255.0.0
- b) 255.255.255.0
- c) 255.255.255.255
- d) 255.0.0.0
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18. How many usable host IP addresses are available in a Class C network with a subnet mask of 255.255.255.0?
- a) 256
- b) 128
- c) 512
- d) 254
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19. What is the purpose of Network Address Translation (NAT)?
- a) To assign IP addresses to devices automatically
- b) To route data packets between networks
- c) To block unauthorized network traffic
- d) To convert public IP addresses into private IP addresses
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20. Which routing protocol uses the distance-vector algorithm?
- a) OSPF
- b) BGP
- c) EIGRP
- d) RIP
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21. What does a routing table contain?
- a) A list of devices connected to the network
- b) A list of network destinations and their corresponding next-hop addresses
- c) A list of available IP addresses
- d) A list of available protocols in the network
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22. Which of the following is used to find the network portion of an IP address?
- a) Subnet mask
- b) IP address
- c) DNS address
- d) MAC address
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23. What is the main purpose of an IP router?
- a) To assign IP addresses to devices
- b) To filter network traffic
- c) To forward data packets between different networks
- d) To encrypt data packets
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24. What is the maximum number of subnets available in a Class B network with a subnet mask of 255.255.255.0?
- a) 128
- b) 64
- c) 256
- d) 16
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25. Which of the following is used to subnet a Class A IP address?
- a) 255.0.0.0
- b) 255.255.255.0
- c) 255.255.255.255
- d) 255.255.0.0
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26. What is the broadcast address for the IP address 192.168.10.25 with a subnet mask of 255.255.255.0?
- a) 192.168.10.0
- b) 192.168.1.255
- c) 255.255.255.255
- d) 192.168.10.255
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27. What is the purpose of routing in a network?
- a) To forward data packets to their correct destination based on IP address
- b) To manage network traffic based on domain names
- c) To assign IP addresses dynamically
- d) To physically connect devices
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28. What is the main function of a router in a network?
- a) To connect devices within the same network
- b) To assign IP addresses to devices
- c) To amplify network signals
- d) To forward data packets between different networks
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29. What does the 'default gateway' refer to in a network?
- a) The device responsible for assigning IP addresses
- b) The device that routes traffic between local networks and the internet
- c) The server responsible for managing network security
- d) The address of the DNS server
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30. What is the maximum number of hosts that can be accommodated in a subnet with a subnet mask of 255.255.255.128?
- a) 128
- b) 254
- c) 126
- d) 512
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