A. Which of the following CIDR blocks cover the address 171.15.66.234? Check all

Question

A. Which of the following CIDR blocks cover the address 171.15.66.234? Check all that apply.

1. 128.0.0.0/1

2. 128.0.0.0/2

3. 171.15.0.0/16

4. 171.15.0.0/17

5. 171.15.0.0/18

6. 171.16.55.128/26

7. 171.15.66.0/28

8. 171.15.66.234/32

.

B. True or false: IPv6 addresses are in short supply.

1. True

2. False

.

C. True or false: using DHCP is the only way for a host to obtain an IP address today in the Internet.

1. True

2. False

.

D. True or false: because it uses a link layer broadcast, in order to receive a response a node using DHCP must be on the same link as its DHCP server.

1. True

2. False

E. True or false: because DHCP uses link ­layer broadcasts, the IP gateway for a subnet must also be a DHCP server.

1. True

2. False

.

F. DHCP is a layer 3 (network layer) protocol

1. True

2. False

.

G. Mark all of the following that are syntactically valid IPv6 addresses:

1. 2001:470::806d:1::9

2. 64:ff9b::171.66.3.9

3. 65:aagg:54::22:12.44.11.99

4. dead:beef:10:10.44.12.22::9

5. fe80::6aa8:6dff:fe05:8522

6. fe80::213:72ff:fe4c:d96a

.

H. True or false: It is considered good practice for Network Address Translators to map a single external IP/port pair to multiple internal IP/port pairs.

1. True

2. False

.

I. True or false: Network Address Translators cannot be layered. I.e., if you have two layers of NAT between a pair of hosts, all IP communication will break.

1. True

2. False

Explanation / Answer

AnsB)False: IPv6 is of 128 bits which is large in numbers because of which Ipv6 addresses are not in short supply.

AnsC)True:DHCP is the only way for a host to obtain an IP address today in the internet.

AnsF)False:DHCP is a layer 7(Application layer) protocol.

AnsI)True

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