Network Addressing
 1. An IPv4 address consists of _______ bits.       
 2. In IPv4, class _______ has the greatest number of addresses in each block       
 3. Identify the class of the following IPv4 address: 4.5.6.7.       
 4. Identify the class of the following IPv4 address: 229.1.2.3.       
 5. Identify the class of the following IPv4 address: 191.1.2.3.       
 6. What is the result of ANDing 255 and 15?       
 7. What is the result of ANDing 0 and 15?       
 8. What is the result of ANDing 254 and 15?       
 9. What is the result of ANDing 192 and 65?       
 10. . Which one is not a contiguous mask?