Elective 1: PreFi

Question 1

N = the Network Number that is assigned by the ___

Answer 1

American Registry for Internet Numbers (ARIN)

Question 2

H = the Host Number that is assigned by the ___

Answer 2

network administrator

Question 3

N.H.H.H

Answer 3

Class A

Question 4

0 - 126 range

Answer 4

Class A

Question 5

Has 24 bits (3 ang H)

Answer 5

Class A

Question 6

2 to-the-power-of 24 (2^24) minus ___ - possible IP addresses to devices that are attached to its network.

Answer 6

Class A
216,777,214

Question 7

__ address is always 0.

Answer 7

Class A

Question 8

N.N.H.H

Answer 8

Class B

Question 9

__ address are always 10 (one and zero).

Answer 9

Class B

Question 10

Has 16 bits (2 ang H)

Answer 10

Class B

Question 11

128 - 191 range

Answer 11

Class B

Question 12

2 to-the-power-of 16 (2^16) minus 2
__ possible IP addresses to devices that are attached to its network.

Answer 12

Class B
65,534

Question 13

Class C address are always 110 (one, one, and zero).

Answer 13

Class C

Question 14

Has 8 bits ( 1 ang H)

Answer 14

Class C

Question 14

192 - 223 range

Answer 14

Class C

Question 15

2 to-the-power-of 8 (2^8) minus 2
___ possible IP addresses to devices that are attached to its network.

Answer 15

Class C
254

Question 16

An __ is made up of 32 bits broken down into 4 Octets (8 bits each)

Answer 16

IP Address

Question 17

11000000.00001100.00000101.10101010 or 192.12.2.170

Answer 17

Dotted Decimal

Question 18

An IP address that ends with binary 0s in all host bits is reserved for the network address (sometimes called the ____).

Answer 18

wire address

Question 19

If you wanted to send data to all of the devices on a network, you would need to use this

Answer 19

Broadcast Address

Question 20

____ addresses end with binary 1s in the entire host part of the address (the host field).

Answer 20

Broadcast Address

Broadcast IP

Question 20

occurs when a source sends out data to all devices on a network.

Answer 20

Broadcast Address

Question 21

All 0’s in the host address is the ___

Answer 21

Network Number

Question 22

All 1’s in the host address is the ___

Answer 22

Broadcast Address

Question 23

(formal term: extended network prefix)

Answer 23

Subnet Mask

Question 24

tells the network devices which part of an address is the network field and which part is the host field.

Answer 24

Subnet Mask

Question 25

A subnet mask is 32 bits long and has 4 octets, just like an IP
address.

Answer 25

Subnet Mask

Question 26

• Borrowing 2 bits creates four possible subnets (2x2), but you must always remember that there are two reserved/unusable subnets.

Each time you borrow another bit from the host field, the number of subnets created increases by a power of 2.

• The eight possible subnets that are created by borrowing 3 bits is
  equal to 23 (2 x 2 x 2). The sixteen possible subnets created by borrowing 4 bits is equal to 24 (2 x 2 x 2 x 2). From these examples,
  it is easy to see that each time you borrow another bit from the host field, the number of possible subnets doubles.

Answer 26

Subnetting

Question 27

The formula for calculating USEABLE Subnets:

Answer 27

2^b - 2 = useable subnets

Question 28

The formula for calculating USEABLE Hosts:

Answer 28

2^u - 2 = useable hosts

Question 29

DHCP

Answer 29

Dynamic Host Configuration Protocol.

Question 30

a service which allows you to configure TCP/ IP settings such as IP address and subnet mask on the clients (PC, laptop, printer, etc.) automatically.

Answer 30

DHCP

Question 31

in a Class B network, the default subnet mask is 255.0.0.0.

Answer 31

True:

Question 32

A Class C network can have a maximum of 254 hosts.

Answer 32

True:

Question 32

In CIDR notation, the number after the slash represents the host bits in the subnet mask.

Answer 32

True:

Question 33

Subnetting allows you to divide a single network into smaller networks, each with its own subnet mask.

Answer 33

True:

Question 33

A broadcast address always ends with at host bits set to 1.

Answer 33

True:

Question 34

The loopback address in IPv4 is 127.0.0.1.

Answer 34

True:

Question 35

in a Class A network, the first octet represents the network portion of the IP address.

Answer 35

True:

Question 36

A Class D IP address is used for multicast communication.

Answer 36

True:

Question 37

The subnet mask 255.255.255.224 has 8 host bits.

Answer 37

True:

Question 38

The broadcast address for a subnet is always the first address in the subnet’s address range.

Answer 38

False:

Question 38

A Class A network can have up to 16,777,214 hosts.

Answer 38

True:

Question 38

The subnet mask 255.255.255.0 has 24 bits for the network portion.

Answer 38

True:

Question 38

A Class B network address ranges from 128.0.0.0 to 191.255.255.255.

Answer 38

True:

Question 38

The subnet mask 255.255.255.128 allows for 126 usable host addresses.

Answer 38

True:

Question 39

An IP address of 10.0.0.1 is a valid address for a Class B network.

Question 40

A Class C network address ranges from 192.0.0.0 to 223.255.255.255.

Answer 40

True:

Question 41

The subnet mask 255.255.255.240 allows for 14 usable host addresses.

Answer 41

True:

Question 42

The first octet in an IP address determines the class of the network.

Answer 42

True:

Question 43

The subnet mask 255.255.254.0 has 23 bits for the network portion.

Answer 43

True: