1. Which of the following is the purpose of a subnet mask in a network? (Select all that apply) a. A subnet mask is not necessary when a default gateway is specified. b. A subnet mask is used to differentiate between the network address, the host addresses, and the broadcast address. c. A subnet mask is required only when bits are borrowed on a network. d. A subnet mask is used to determine in which subnet an IP address belongs. e. A subnet mask is used to separate the 48-bit address into the OUI and the vendor serial number.

2.

Given the following IP address and subnet mask: 172.16.134.95/27, which of the following would describe this address?

a. This is a broadcast address b. This is a network address c. This is a useable host address d. This is not a valid address