TCP/IP Basics

Question 1

IP addresses are actually 1’s and 0’s

Answer 1

Dotted Decimal notation

Question 2

Each octet in an IP address is valued between:

Answer 2

0 and 255

Question 3

Each octet in an IP address represents a:

Answer 3

Binary string: example 192 is 11000000

Question 4

Must know how to calculate IP’s from:

Answer 4

Binary to Octet and Octet to Binary

Question 5

There are exactly 256 combinations for an Octet

Question 6

How does your computer resolve MAC addresses from IP Addresses

Answer 6

Address Resolution Protocol ( ARP )

Question 7

ARP’s are actually Broadcasts

Question 8

to see all the mac address’s or your computers ARP cache :

Answer 8

arp -a in a command prompt

Question 9

in DHCP __________ _____ cannot change but Host ID’s can

Answer 9

Network ID’s

Question 10

In the Host ID what numbers can you not use in that octet?

Answer 10

0 or 255 , only 1 - 254

Question 11

255.255.0.0 is also know as a :

Answer 11

/16 or Whack 16 Subnet mask

Question 12

When a computer is of the local area network, what figures out where to send the ARP or forward the message to outside of the LAN?

Answer 12

Default gateway

Question 13

Each host on a network needs the following:

Answer 13

IP Address
Subnet mask
Default Gateway

Question 14

the host uses the ______________to know if the destination address is on the local or remote network

Answer 14

Subnet Mask

Question 15

Each host knows the ___________ so that it can forward traffic to remote networks

Answer 15

Default Gateway

Question 16

This companies job is to keep track of all the IP addresses out there . They actually send chunks of IP’s to Regional Internet Registry (RIR) all over the world.

Answer 16

iana or Internet Assigned Numbers Authority

Question 17

Class licenses

Answer 17

Class A IP addresses range from 0-126 /8
127 is used for Loopback address
Class B IP addresses range from 128-191 /16
Class C IP addresses range from 192-223 /24

Question 18

This process divides Network ID’s into two or more networks

Answer 18

Subnetting

Question 18

IP addresses cannot end in 0’s or 255 but __________ can.

Answer 18

Subnets

Question 19

This was the first effort to divide network ID’s

Answer 19

Classful Subnetting

Question 20

All computers on a network need all 3 of these:

Answer 20

IP address
Subnet Mask
Default Gateway

Question 21

A host or computer uses the _________ to know if the destination IP is local or remote

Answer 21

Subnet Mask

Question 22

This process chops or breaks up one subnet into many smaller subnets:

Answer 22

Classless Inter Domain Routing ( CIDR )

Question 23

Subnet masks have all 1’s on the left and all 0’s on the right

Question 24

DHCP normally broadcasts as being a ______________

Answer 24

server

Question 24

Linux’s protocol or BootStrap Protocol is known as:

Answer 24

bootp

Question 24

The more _______ you have the less host or IP’s you’ll have.

Answer 24

subnets

Question 25

Each broadcast domain must have ONLY _____ DHCP server.

Answer 25

One

Question 26

The DHCP server MUST be ran within the ________ domain.

Answer 26

broadcast

Question 27

What is the command to display network info on a MAC or Windows?

Answer 27

ipconfig

Question 28

What is the command to display network info in Linux?

Answer 28

ifconfig

Question 29

For a DHCP server to work, you need a ___________ and ___________

Answer 29

Server and client

Question 30

A ____________ enables a single DHCP server to service more than one broadcast domain.

Answer 30

DHCP Relay

Question 31

There are only 3 private IP addresses used on internal networks:

Answer 31

10.0.0.0
172.16.1.1 to 172.31.1.1
192.168.1.1

Question 32

Loopback address for IPv4 that pings yourself is:

Answer 32

127.0.0.1

Question 33

This is built into all DHCP servers to act as a backup

Answer 33

Automatic Private IP Addressing ( APIPA )

Question 34

The loopback address for IPV6 is:

Answer 34

::1

Question 35

This address indicates the DHCP server is down:

Answer 35

APIPA address of 169.254.1.1

Question 36

Duplicate MAC addresses normally occur when you are using:

Answer 36

Virtual Machines

Question 37

If the DHCP server ever goes down or you can’t see the network your IP address may be an:

Answer 37

Expired IP address

Question 38

All the computers in one broadcast domain have the same:

Answer 38

Subnet mask