background image
Answers to the Chapter 5 Q&A Section 733
18
Given the IP address 140.1.1.1 and the mask 255.255.255.248, what is the broadcast
address?
The broadcast address is 140.1.1.7. The binary algorithm math is shown in the table that
follows.
19
Given the IP address 167.88.99.66 and the mask 255.255.255.192, what is the broadcast
address?
The broadcast address is 167.88.99.127. The binary algorithm math is shown in the table
that follows.
20
Given the IP address 134.141.7.11 and the mask 255.255.255.0, what are the assignable
IP addresses in this subnet?
The subnet number is 134.141.7.0, and the subnet broadcast address is 134.141.7.255. The
assignable addresses are all the addresses between the subnet and broadcast addresses,
namely 134.141.7.1 to 134.141.7.254.
21
Given the IP address 193.193.7.7 and the mask 255.255.255.0, what are the assignable
IP addresses in this subnet?
The subnet number is 193.193.7.0, and the subnet broadcast address is 193.193.7.255. The
assignable addresses are all the addresses between the subnet and broadcast addresses,
namely 193.193.7.1 to 193.193.7.254.
22
Given the IP address 10.5.118.3 and the mask 255.255.0.0, what are the assignable IP
addresses in this subnet?
The subnet number is 10.5.0.0, and the subnet broadcast address is 10.5.255.255. The
assignable addresses are all the addresses between the subnet and broadcast addresses,
namely 10.5.0.1 to 10.5.255.254.
Address
140.1.1.1
1000 1100 0000 0001 0000 0001 0000 0001
Mask
255.255.255.248
1111 1111 1111 1111 1111 1111 1111 1000
Result
140.1.1.0
1000 1100 0000 0001 0000 0001 0000 0000
Broadcast
Address
140.1.1.7
1000 1100 0000 0001 0000 0001 0000 0111
Address
167.88.99.66
1010 0111 0101 1000 0110 0011 0100 0010
Mask
255.255.255.192
1111 1111 1111 1111 1111 1111 1100 0000
Result
167.88.99.64
1010 0111 0101 1000 0110 0011 0100 0000
Broadcast
Address
167.88.99.127
1010 0111 0101 1000 0110 0011 0111 1111
apA.fm Page 733 Monday, March 20, 2000 5:24 PM