A user is unable to access any network resources. The IP configuration of the workstation is as follows:
IP Address: 192.168.10.32
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.10.46
Which of the following would allow the user to connect to network resources?
A.
Change the default gateway to 192.168.10.1
B.
Change the default gateway to 192.168.10.254
C.
Change the IP address to 192.168.10.31
D.
Change the IP address to 192.168.10.33
The problem is that the IP address is not in a valid host range for a subnet mask of 255.255.255.240
aka /28 = x.x.x.11110000 (x=8 bits on/1)
2^4 (#0s)= 16 Subnets
2^4 (#1s)- 2= 14 Hosts/subnet
256-240= 16 – Subnets go in multiples of 16
Broadcast address (BA) is one number below the previous subnet
Numbers b/w BA and subnet are valid host ranges
Ex)
Subnet Valid Hosts BA
0 1-14 15
16 17-30 31
32 33-48 47
Note : valid hosts are numbers on the 4th octet of the address
IP address of 192.168.10.32 is not within the valid host range for the subnet mask of /28
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