Chapter 7 BB

Question 1

What are the 3 ways of depicting an IP address? Pg 207

Answer 1

Dotted-decimal, Binary, and Hexadecimal

Question 2

What way of depicting an IP address is typically used with IPv6? Pg 207

Answer 2

Hexadecimal

Question 3

How many possible IP addresses are there using hierarchical addressing? Pg 207

Answer 3

4.3 billion (4,294,967,296)

Question 4

Class A networks are reserved for what? Pg 208

Answer 4

Networks with a large number of hosts

Question 5

The 32 bits of an IPv4 address is split differently between network/host address depending on the class of the network, which networks have which breakdowns? Pg 208

Answer 5

Class A: The first 8 bits are for the network address, and the last 24 bits are for the host address.
Class B: The first 16 bits are for the network address, and the last 16 bits are for the host address.
Class C: The first 24 bits are for the network address, and the last 8 bits are for the host address.

Question 6

What must the range be of the first byte in a Class A address and what is the total number of class A network addresses? Pg 209

Answer 6

Must be between 0 and 127, 126

Question 7

What does a network address of all 0s mean? Pg 209

Answer 7

“this network or segment”

Question 8

What does a network address of all 1s mean? Pg 209

Answer 8

“all networks”

Question 9

What network address is reserved for loopback tests? Pg 210

Answer 9

127.0.0.1

Question 10

What are two reserved host addresses and what do they dictate? Pg 210

Answer 10

Host address of all 0s: any host on the specified network

Host address of all 1s: all hosts on the specified network

Question 11

What does an entire IP address of 0s mean? What about an entire IP address of 1s? Pg 210

Answer 11

0s: used by cisco routers to designate the default route
1s: broadcast to all hosts on the current network

Question 12

What is the number of usable hosts on a class A network? Pg 210

Answer 12

16,777,214

Question 13

Which network addresses define a class B network and how many usable hosts can there be on a class B network? Pg 211

Answer 13

Network address between 128 to 191. 65,534 possible hosts on the network.

Question 14

Which network addresses define a class C network and how many usable hosts can there be on a class C network? Pg 211

Answer 14

Network address between 192 and 223. 254 usable hosts on the network.

Question 15

What are addresses with the first octet of 224-239 and 240-255 reserved for? What are those classes used for? Pg 212

Answer 15

Class D (224-239) is used for multicast addresses and Class E (240-255) for scientific purposes.