Networking Basics IP Addressing, Subnetting and Routing MCQs

Questions (30)

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
   View Answer

   Correct A unique identifier for a device on a network

2. Which class of IP address is used for private networks?

   • a) Class A
   • b) Class B
   • c) Class C
   • d) Class D
   View Answer

   Correct Class B

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
   View Answer

   Correct 10.0.0.0 to 10.255.255.255

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
   View Answer

   Correct 255.0.0.0

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
   View Answer

   Correct Classless Inter-Domain Routing

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
   View Answer

   Correct To identify the network portion of an IP address

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
   View Answer

   Correct 192.168.1.1

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
   View Answer

   Correct Network bits

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
   View Answer

   Correct 172.16.5.6

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
    View Answer

    Correct 0.0.0.0 to 127.255.255.255

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
    View Answer

    Correct The router checks the destination IP address

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
    View Answer

    Correct To route traffic from a local network to external networks

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
    View Answer

    Correct Routes are manually configured by the network administrator

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
    View Answer

    Correct To route data packets between networks

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
    View Answer

    Correct 10.0.0.0

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
    View Answer

    Correct It is used for automatic private IP addressing (APIPA)

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
    View Answer

    Correct 255.255.255.0

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
    View Answer

    Correct 254

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
    View Answer

    Correct To convert public IP addresses into private IP addresses

20. Which routing protocol uses the distance-vector algorithm?

    • a) OSPF
    • b) BGP
    • c) EIGRP
    • d) RIP
    View Answer

    Correct RIP

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
    View Answer

    Correct A list of network destinations and their corresponding next-hop addresses

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
    View Answer

    Correct Subnet mask

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
    View Answer

    Correct To forward data packets between different networks

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
    View Answer

    Correct 16

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
    View Answer

    Correct 255.255.0.0

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
    View Answer

    Correct 192.168.10.255

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
    View Answer

    Correct To forward data packets to their correct destination based on IP address

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
    View Answer

    Correct To forward data packets between different networks

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
    View Answer

    Correct The device that routes traffic between local networks and the internet

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
    View Answer

    Correct 126