Chapter 6

Question 1

How many bits does an IPv4 Address consist of?
A) 16
B) 32
C) 64
D) 128

Answer 1

B. IPv4 address consists of 32 bits.

Question 2

Identify the network ID section of the following IP address and subnet mask:
A) 10.14
B) 43
C) 10.14.12
D) 14.12.43

Answer 2

C) The network ID is the first three octets when using the specified subnet.

Question 3

Which of the following is a proper subnet mask?
A) 11111111111111111111111100000000
B) 00000000000000000000000011111111
C) 10101010101010101010101010101010
D) 01010101010101010101010101010101

Answer 3

A) A subnet is all ones followed by zeros.

255.255.255.0/24

Question 4

What does ARP stand for?
A) Address Reconcliation Process
B) Automated Ranking Protocol
C) Address Resolution Protocol
D) Advanced Resolution Protocl

Answer 4

C) ARP stands for Address Resolution Protocol, Which is how a TCP/IP network figures out the MAC address based on the destination IP address.

Question 5

Identify the class of the following IP address: 146.203.143.101
A) Class A
B) Class B
C) Class C
D) Class D

Answer 5

B) Class B: IP address range from 128-191 in the first byte designed for medium-size companies.

Question 6

What does IANA stand for?
A) International Association Numbers Authority
B) International Association Numbing Authority
C) Internet Assigned Numbering Authority
D) Internet Assigned Numbers Authority

Answer 6

D. The correct choice for IANA is internet Assigned Numbers Authority.

Question 7

What is the Maximum number of hosts in a /19 subnet?
A) 254
B) 8192
C) 16382
D) 8190

Answer 7

D) The total number of hosts is 8190.

Question 8

What is the number 138 in binary?
A) 10001010
B) 10101010
C) 10000111
D) 11001010

Answer 8

A) 10001010 is the number 138 in binary.

Question 9

When DHCP discovers fails, what process will the client use to generate an address for itsself?
A) ATAPI (Automatic Temporary Address Program Initiator)
B) APIPA (Automatic Private IP Addressing)
C) ATIPA (Automatic Temporary IP Address)
D) APFBA (Automatic Programmable Fall Back Adress)

Answer 9

B) A client uses APIPA (Automatic Private IP Address) to generate an address when DHCP Discover Fails.

Question 10

Which of the following is a valid loopback address?
A) 128.0.0.1
B) 127.0.0.0
C)128.0.0.255
D) 127.24.0.1

Answer 10

D) 127.24.0.1 - Any Address in the 127.0.0.0/8 subnet will work as loopback.

Question 11

What is the correct Formula to determine the number of hosts for a given subnet?
A) 2^x -2
B) /16 - x
C) 2^x + 2
D) 2^x / 2

Answer 11

A) 2^x - 2, Where x represents the number of zeroes in the subnet mask.

A subnet mask always has 32 digits, a /16 subnet means you have 16 zeroes left after the 16 ones. EX: 2^16 - 2 = 65,534 total hosts.

Question 12

What does DHCP stand for?
A) Dynamic Host Configuration Protocol
B) Don't Help Cops Protocol
C) Dynamic Host Complex Protocol
D) Dynamic Host Configuration path

Answer 12

DHCP stand for: Dynamic Host Configuration Protocol.

DHCP automatically assigns an IP address whenever a computer connects to the network.

Question 13

What does DORA Stand for?
A) Dynamic, Offer, Request, Acknowledgment
B) Discover, Offer, Reset, Acknowledgment
C) Discover, Offer, Request, Acknowledgment

Answer 13

DORA Stand for: Discover, Offer, Request, Acknowledgment.

Question 14

DHCP uses UDP ports \_\_ and \_\_?
A) 80 and 48
B) 67 and 68
C) 54 and 55
D) 40 and 41

Answer 14

B) DHCP uses UDP ports 67 and 68.

Question 15

What does ARP stand for?

Answer 15

Address Resolution Protocol - Is how a TCP/IP network figures out the MAC address based on the destination IP address.

Question 16

All computers on the same network have the same subnet mask and network ID?
A. True
B. False

Answer 16

A. True

Question 17

What Class is 1.0.0.0 - 125.255.255.255?

Answer 17

Class A - Has a network ID that starts between 1 and 126;

Question 18

What Class is 128.0.0.0 - 191.255.255.255?

Answer 18

Class B - Has a network ID that starts between 128 and 191.