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Unformatted text preview: Quiz 2 1. A DHCP relay agent is required if the routers are not RFC 1542 compliant and the DHCP server is located on another subnet. a. True b. False ANSWER: A EXPLANATION: If the DHCP server is located on another subnet and the routers between the DHCP clients and the DHCP server do not support BOOTP forwarding, a DHCP relay agent is required. (Discussion starts on page 117.) 2. The IP address of 192.168.0.10 belongs to which of the following address classes? a. Class A b. Class B c. Class C d. Class D ANSWER: C EXPLANATION: The IP address of 192.168.0.10 is a Class C address. If the first octet of an IP address is a decimal value from 1 to 127, the IP address is Class A; from 128 to 191 is Class B; from 192 to 223 is Class C; and from 224 to 239 is Class D. (Discussion starts on page 107.) 3. You are designing the IP address space for a small insurance company. There are currently three subnets on the private network. They do not expect the number of subnets to increase. Each subnet hosts a maximum of 25 hosts. You need to subnet the IP address of 192.168.8.0 to provide the largest number of subnets possible. Which of the following subnet masks will you use? a. 255.255.255.0 b. 255.255.255.192 c. 255.255.255.224 d. 255.255.255.240 ANSWER: C EXPLANATION: The subnet mask of 255.255.255.224 will allow for a maximum of 6 subnets and 30 hosts per subnet. This will meet the requirements. The subnet mask of 255.255.255.0 is the default for a Class C address. The subnet mask of 255.255.255.192 will allow for a maximum of 2 subnets. The subnet mask of 255.255.255.240 will allow for a maximum of 14 subnets. However, it will only allow for a maximum of 14 hosts per subnet. (Discussion starts on page 110.) 4. You are designing the IP address scheme for Contoso, Ltd. The company has several different locations throughout the United States. There are currently 20 subnets each with a maximum of 100 users. The company will be using a network address of 18.104.22.168 on the internal network. The CIO estimates an additional 20 subnets will be added in the near future due to expansion. What subnet mask will you choose? a. 255.255.0.0 b. 255.255.248.0 c. 255.255.240.0 d. 255.255.252.0 ANSWER: D EXPLANATION: In order to meet the requirements of 40 subnets with 100 hosts per subnet, a subnet mask of 255.255.252.0 should be used. This will allow for a maximum of 62 subnets and 1022 hosts per subnet. The default subnet mask cannot be used because the internal network is made up of multiple subnets. The subnet mask of 255.255.248.0 will only allow for 30 subnets. A subnet mask of 255.255.240 will only allow for 14 subnets. (Discussion starts on page 110.) 5. You are designing a DHCP solution for A. Datum Corporation. You have gathered the following information during your analysis of the existing network....
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