Study the given networks and answer the following questions: 1) How many hosts a
ID: 3587735 • Letter: S
Question
Study the given networks and answer the following questions:
1) How many hosts are there in Subnet A.
2) What is the first IP address assigned to a host in Subnet B. (Write the address in w.x.y.z notation)
3) What is the last IP address assigned to a host in Subnet B. (Write the address in w.x.y.z notation)
4) What is the broadcast IP address in Subnet A. (Write the address in w.x.y.z notation)
5) Assume that Subnet C has 1022 available hosts and two packets with IP addresses 233.1.3.25 and 233.1.3.25 received by the router from the internet. If the router decides to forward the packets to Subnet C, what would the network address be(Write the address in w.x.y.z notation).
INTERNET Subnet c
Explanation / Answer
1. Subnet Mask bit 21 which is fixed, 32-21=11 is variable bit for host so number of available hosts =2^11 -2=2046
2. What is the first IP address assigned to a host in Subnet B. = 223.1.4.1, because after Logical AND the given address 223.1.4.0 and subnet mask 255.255.254.0 get 223.1.4.0 which is net ID.
3. The last IP will be 223.1.5.254 because if we put all 1 after 23 bit, we will get 223.1.5.255 which is broadcast address 255-1 =254.
4. Brodcast IP is 223.1.23.255
5. network id for subnet C is 223.1.0/22. Since 1022 host are available means total available host 1022+2=1024=2^10 , we need 10 bit to represent host bit so subnet mask will be 32-10= 22 bit subnet mask. If we logical AND the packet address and subnet mask we will get n/w ID