PHUB : Intro into Network addressing

Question 1

Networks can be defined as _____________________?

Answer 1

• Networks can be defined as :
  
  • a collection of interconnected hosts
    
    • generally via shared media which can be wired or wireless .
    • this enables the hosts to share information
    • a computer network can be as simple as two computers connected by a single wire.

Question 2

the internet is a network of ____________?

Answer 2

networks

Question 3

For any device to communicate to one another , they should be able to __________ each other.

Answer 3

identify

Question 4

There are two ways to identify a device on a network.

what are they?

Answer 4

1. mac address

and

2. IP address

Question 5

define a MAC address ?

Answer 5

• MAC address:
  
  • is a factory coded 48-bits hardware address
  • used when devices are logically connected.

Question 6

when are IP addresses used?

Answer 6

• IP address :
  
  • is used when the devices are not logically conneted

Question 7

true or false all devices are given a logical address.

Answer 7

true.

this logical address is called the Internet Protocol address .

Question 8

what does OSI stand for ?

Answer 8

Open System Interconnection.

Question 9

OSI is a ___________ ________ ________ .

Answer 9

layered conceptualized model.

Question 10

The OSI defines how a _________ should communicate with the other .

Answer 10

system

Question 11

what is layer 7 of the OSI model ?

Answer 11

Application layer

Question 12

what is layer 6 of the OSI model?

Answer 12

Presentation layer

Question 13

what is layer 5 of the OSI model ?

Answer 13

Session Layer

Question 14

Name the 4th layer of the OSI model .

Answer 14

Transport layer

Question 15

What is layer of 3 of the OSI model ?

Answer 15

Network Layer

Question 16

Name layer 2 of the OSI model.

Answer 16

Data Link layer

Question 17

What is layer 1 of the OSI model?

Answer 17

physical layer

Question 18

Descibe the characteristics of the Application layer.

Answer 18

• application layer:
  
  • ​This is where the user application sits​
  • it needs to transfer data between or among hosts
    
    • ​example: file transfer application(FTP) , electronic mail
  • this layer is also the only layer that the user interacts with.
  • allows acess for the user to get varied network services

Question 19

the session layer controls ….?

Answer 19

all connections between multiple devices in a network

Question 20

what layer tracks dialoge between devices on a network ?

Answer 20

session layer

Question 21

the transport layer is used to …..?

Answer 21

transfer data between applications

Question 22

what layer is responsible for ened to end communication on a network?

Answer 22

the transport layer

Question 23

the network layer knows the …..?

Answer 23

address of treh nearby nodes in a network

Question 24

the majority of teh internet uses….. ?

Answer 24

TCP/IP suite

Question 25

the three top layers of teh OSI model are compressed together in a single .....?

Answer 25

application layer of the **TCP/IP model**

Question 26

the **TCP/IP** has what layers ?

Answer 26

1. host to network layer (*link layer*) 2. internet layer 3. transport layer 4. application layer

Question 27

what layer is the lowest in the **TCP/IP** model ?

Answer 27

**link layer**

Question 28

the **TCP/IP** link layer comprises what two layers?

Answer 28

1. Physical and 2. Data link layer

Question 29

what is the top layer of the TCP/IP model?

Answer 29

application layer

Question 30

the **application layer** of the TCP/IP model defines....?

Answer 30

the interface of host programs w/ the transport layers services

Question 31

consider any data , it is a combination of ...?

Answer 31

**0s and 1s**

Question 32

the internet works by ....?

Answer 32

**chopping** data into chucks called **packets**

Question 33

a **data packet** or **network packet** is ....?

Answer 33

a **collection name** of several components

Question 34

the internet layer of the TCP/IP models defines .....?

Answer 34

the **protocols** for **logical transmission** of data over a **network**

Question 35

what is the **main protocol** of the TCP/IP internet layer?

Answer 35

Internet Protocol(IP)

Question 36

The **transport layer** of the TCP/IP is responsible for .....?

Answer 36

error free end to end delivery fo data

Question 37

What are the main protocols of the TCP/IP transport layer

Answer 37

1. Transmission Control Protocol 2. User datagram Protocol (UDP)

Question 38

what are TCP packets called ?

Answer 38

segments

Question 39

UDP packets ar called ....?

Answer 39

datagrams

Question 40

**class B** IP addresses range from ...?

Answer 40

128.0.x.x to 191.255.x.x.

Question 41

what is the **default subnet mask** for class B addresses ?

Answer 41

255.255.x.x.

Question 42

**class B** has ________ network addresses and __________ host addresses

Answer 42

16384 , 65534

Question 43

**class C** addresses range from .....?

Answer 43

192.0.0.x. to 223.255.255.x.

Question 44

what is the defualt subnet mask for **class C**?

Answer 44

255.255.255.x.

Question 45

what is **class D's** ip address range?

Answer 45

224.0.0.0 to 239.255.255.255.

Question 46

**class D** is reserved for ....?

Answer 46

mulitcasting

Question 47

in **multicasting** ,data is not destined for a particular ....?

Answer 47

host

Question 48

does **class D** gave a subnet mask?

Answer 48

no

Question 49

what **IP class** is reserved for experimental purposes only for R&D and study?

Answer 49

**class E**

Question 50

IP addresses in **class E** range from....?

Answer 50

240.0.0.0 ro 255.255.255.254

Question 51

is **class E** equipped with a subnet mask ?

Answer 51

no

Question 52

**Subnetting** is the practice of dividing a network ......?

Answer 52

into two or mor smaller networks

Question 53

**subnetting** increases.....?

Answer 53

routing efficiency , enhances teh security of the network

Question 54

**subnetting** also reduces the size of the....?

Answer 54

broadcast domain

Question 55

**subnetting** allows us to create .....?

Answer 55

smaller networks from a single large network

Question 56

if all hosts are in the same domain than a broadcast sent by any device in that domain will be ....?

Answer 56

processed by all hosts. which would create alot of unnessary traffic