Bits and Bytes of Computer Networking

Question 1

an ip address has __ bit and __ octet

Answer 1

32, 4

Question 2

an ip address has a ______ format

Answer 2

dotted decimal notation format

Question 3

distributed in large sections by various organizations and companies

Answer 3

ip address

Question 4

an address that belongs to the network not the devices attached to the network

Answer 4

ip address

Question 5

defined set of standard that computers must follow in order to communicate properly

Answer 5

protocol

Question 6

name we’ve given to the full scope of how computers communicate with each other

Answer 6

computer network

Question 7

5 layer model

Answer 7

tcp/ip

Question 8

7 layer model

Answer 8

osi

Question 9

what is the physical layer responsible for (tcp/ip)

Answer 9

represent the physical devices that interconnect computer

Question 10

what is the data link layer responsible for (tcp/ip)

Answer 10

defining a common way of interpreting information signals so network devices can communicate

Question 11

protocols that exist at the data link layer

Answer 11

ethernet protocol and wifi protocol

Question 12

what is the network layer responsible for (tcp/ip)

Answer 12

allows different networks to communicate with each other through routers

Question 13

internetwork definition

Answer 13

collection of network connected together through routers the most famous being the internet

Question 14

network ____ is usually divided into ___ and ___

Answer 14

software, client, server

Question 15

what is the transport layer responsible for (tcp/ip)

Answer 15

sorts out which client and program are supposed to get the data.

Question 16

what protocol exist at the transport layer

Answer 16

tcp and udp

Question 17

tcp definition

Answer 17

transmission control protocol: use mechanism to ensure reliability

Question 18

udp definition

Answer 18

user datagram protocol: does no use mechanism o ensure reliability

Question 19

what is the application layer responsible for (tcp/ip)

Answer 19

the highest abstraction layer of the TCP/IP model that provides the interfaces and protocols needed by the users. It combines the functionalities of the session layer, the presentation layer and the application layer of the OSI model.

Question 20

cables

Answer 20

connect different devices to each other allowing data to be transmitted over them

Question 21

what are the most commonly used types of copper cables for networking

Answer 21

cat 5, cat 5e, cat 6

Question 22

differentiate at 5, cat 5, and cat 6

Answer 22

Cat5 and Cat5e are limited to 100 MHz speed while Cat6 can go up to 250 MHz.

In practical terms, this means that a Cat5e cable is only capable of adhering to the 1000BASE-T/TX standard while Cat6 can adhere to the much faster 10GBASE-T (10-Gigabit Ethernet). Cat6 is capable of 10x the speeds of Cat5e. Physical improvements in the hardware of the cable make this possible. A Cat6 network is fully backwards compatible with Cat5e devices.

cat 5e: can reduce crosstalk compared to cat 5
cat 6: faster and reliable but reaches shorter distance at higher speeds

Question 23

hub definition

Answer 23

physical layer device that allows connections from many computer at once and creates collision domain

Question 24

collision domain definiton

Answer 24

network segment where only one device can communicate at a time

Question 25

define switch

Answer 25

data link layer device hence it can insect the ethernet protocol and determine which system the data is intended for and send it to that one system