Week-10: Networking

Task-1: Subnet Identification:

  • Task: Given the IPv4 address 192.168.10.0/24, identify the network address, broadcast address, and range of usable IP addresses.

  • Solution: Later

  • Network Address: 192.168.10.0

  • Broadcast Address: 192.168.10.255

  • Usable IP Address Range: 192.168.10.1 to 192.168.10.254

Task-2: Subnetting Practice:

  • Task: Subnet the IPv4 address 10.20.30.0/24 into four subnets with equal numbers of hosts. Provide the subnet addresses, subnet masks, network addresses, broadcast addresses, and ranges of usable IP addresses for each subnet.

  • Solution: Later

    • Subnet 1:
      • Subnet Address: 10.20.30.0
      • Subnet Mask: 255.255.255.192 (/26)
      • Network Address: 10.20.30.0
      • Broadcast Address: 10.20.30.63
      • Usable IP Address Range: 10.20.30.1 to 10.20.30.62
    • Subnets 2, 3, and 4: Similar calculations with adjusted subnet addresses (10.20.30.64, 10.20.30.128, 10.20.30.192) and broadcast addresses.

Task-3: CIDR Notation Conversion:

  • Task: Convert the following IPv4 addresses from CIDR notation to dotted decimal notation:

    • a. 172.16.0.0/16 =>
    • b. 192.168.100.0/22 =>
    • c. 10.0.0.0/8 =>

  • Solutions: later

  • a. 172.16.0.0/16 => Solution: 172.16.0.0 with subnet mask 255.255.0.0

  • b. 192.168.100.0/22 => Solution: 192.168.100.0 with subnet mask 255.255.252.0

  • c. 10.0.0.0/8 => Solution: 10.0.0.0 with subnet mask 255.0.0.0

Task-4: Determining Subnet Size:

  • Task: You have been allocated the IPv4 address block 172.16.0.0/16. Determine the subnet mask that will allow for at least 1000 hosts per subnet while minimizing the waste of IP addresses.

  • Solution: Later

To accommodate at least 1000 hosts per subnet, a subnet mask of /22 (255.255.252.0) should be used. This provides 1022 usable IP addresses per subnet, minimizing IP address wastage.

Task-5: Subnetting Troubleshooting: (This require some reserach )

  • Task: A network administrator has subnetted the IPv4 address range 192.168.50.0/24 into smaller subnets. However, one of the subnets is unable to communicate with devices in other subnets. Identify and explain two possible causes of this communication issue.

  • Possible Causes:

    1. Misconfigured Subnet Mask: If the subnet mask used for the problematic subnet differs from the subnet masks used in other subnets, devices within that subnet may not be able to communicate with devices in other subnets.
    2. Incorrect Routing Configuration: The router responsible for interconnecting the subnets may not have the correct routing entries configured, preventing traffic from being properly routed between subnets.