Chapter 7

Question 1

Is a numeric identifier assigned to each machine on an IP network. It designates the specific location of a device on the network. p190

Answer 1

IP address

Question 2

What is a bit.p190

Answer 2

A bit is one digit, either a 1 or a 0.

Question 3

What is a byte. p190

Answer 3

byte is 7 or 8 bits, depending on whether parity is used. For the rest of this chapter, always assume a byte is 8 bits.

Question 4

What is a octet. p190

Answer 4

A n octet, made up of 8 bits, is just an ordinary 8-bit binary number. In this chapter, the terms byte and octet are completely interchangeable.

Question 5

This is the designation used in routing to send packets to a remote network—for example, 10.0.0.0, 172.16.0.0, and 192.168.10.0. p190

Answer 5

Network address

Question 6

Is used by applications and hosts to send information to all hosts on a network.p191

Answer 6

Broadcast address

Question 7

You can depict an IP address using one of three methods: p191

Answer 7

Dotted-decimal, as in 172.16.30.56

Binary, as in 10101100.00010000.00011110.00111000 Hexadecimal, as in AC.10.1E.38

Question 8

Although either type of addressing scheme can be used,_________ has been chosen for a very important reason. p191

Answer 8

hierarchical addressing

Question 9

Is assigned to, and uniquely identifies, each machine on a network. p192

Answer 9

host address

Question 10

For the small number of networks possessing a very large number of hosts, they created the rank. p192

Answer 10

Class A network

Question 11

which is reserved for the numerous networks with a small number of hosts.p192

Answer 11

Class C network

Question 12

The class distinction for networks between very large and very small is predictably called the what. p192

Answer 12

Class B network

Question 13

Network address of all 0s. p193

Answer 13

Interpreted to mean “this network or segment.”

Question 14

Network address of all 1s. p193

Answer 14

Interpreted to mean “all networks.”

Question 15

Network 127.0.0.1. p193

Answer 15

Reserved for loopback tests. Designates the local host and allows that host to send a test packet to itself without generating network traffic.

Question 16

Host address of all 0s. p194

Answer 16

Interpreted to mean “network address” or any host on specified network.

Question 17

Host address of all 1s. p194

Answer 17

Interpreted to mean “all hosts” on the specified network; for example, 128.2.255.255 means “all hosts” on network 128.2 (Class B address).

Question 18

Entire IP address set to all 0s. p194

Answer 18

Used by Cisco routers to designate the default route. Could also mean “any network.”

Question 19

Entire IP address set to all 1s (same as 255.255.255.255). p194

Answer 19

Broadcast to all hosts on the current network; sometimes called an “all 1s broadcast” or limited broadcast.

Question 20

This is designed for the purpose of creating a measure of muchneeded security, but it also conveniently saves valuable IP address space. p196

Answer 20

Private IP Addresses

Question 21

which basically takes a private IP address and converts it for use on the Internet. p196

Answer 21

Network Address Translation (NAT)

Question 22

what are the four IPv4 types. p198

Answer 22

Layer 2 broadcasts
Broadcasts (Layer 3)
Unicast
Multicast

Question 23

are also known as hardware broadcasts—they only go out on a LAN, and they don’t go past the LAN boundary (router). p198

Answer 23

Layer 2 broadcasts

Question 24

Broadcast messages are meant to reach all hosts on a broadcast domain. These are the network broadcasts that have all host bits on..p198

Answer 24

Broadcasts (Layer 3)

Question 25

e it’s a broadcast packet that goes from 255.255.255.255 to an actual destination IP address—in other words, it’s directed to a specific host. p199

Answer 25

Unicast

Question 26

At first glance, it appears to be a hybrid of unicast and broadcast communication, but that isn’t quite the case. p199

Answer 26

Multicast