basic network info

Question 1

what is a dedicated server

Answer 1

a server that performs one funtion

Question 2

what is a peer to peer network

Answer 2

a network where all computers can share resources eg drive sharing

Question 3

what does LAN stand for & what does it do

Answer 3

Local Area network - a network that is in the same office or building

Question 4

what does Wan stand for & what does it do

Answer 4

same as LAN but in a large geographic area normally used to connect two offices

Question 5

what operates on level 1 and 2 the osi model

Answer 5

Ethernet

Question 6

What is a node

Answer 6

a device connected to the network

Question 7

what is a star topology

Answer 7

all notes are connected via a switch in the middle

Question 8

what layer does a hub work on

Answer 8

1

Question 9

what layer does a switch work on

Answer 9

2 as it uses mac addresses to allow to route the packets

Question 10

what is a mesh network

Answer 10

a network where multiple switches are connected to allow for redentecy

Question 11

what is the max transmit length of a twisted pair cable with out a repeater

Answer 11

100 meters

Question 12

what does NIC stand for

Answer 12

Network Interface Card

Question 13

what are mac addresses used for

Answer 13

used to keep track of devices on a network for routing perpouses

Question 14

What Layer are Mac addresses on

Answer 14

2

Question 15

what happens on level 2 of the OSI model

Answer 15

exchange of basic information most importantly the ability every device on a network using mac address

Question 16

how many bits are mac adresses

Answer 16

48

Question 17

how many bits in a mac address octet

Answer 17

8

Question 18

what command prompt is used to see basic network information

Answer 18

ipconfig /all

Question 19

where does a network packet originate from

Answer 19

sender

Question 20

what does a packet contain

Answer 20

Mac Address of sender and receiver, header information and the payload

Question 21

what is a preamble

Answer 21

the first 56 bits of binary to synchronize to sycrosise clocks

Question 22

what is a frame

Answer 22

the data after the preamble in a packet

Question 23

what is the standard packet format for Ethernet

Answer 23

Preamble 56 bits
start of frame marker 1 bit
Destination Mac address six bytes
Sender Mac Address six bytes
Ethertyoe 2 bytes
payload between 46 to 1500 bytes
Frame check sequence 4 bytes

Question 24

in a packet what is a ethertype

Answer 24

2 bytes that specify the protocol in a payload

Question 25

in a packet what is a frame check sequence

Answer 25

four bytes at the end of a packet to ensure the data was sent correctly

Question 26

what do hubs do to reserved packets

Answer 26

only amplify and send to all ports

Question 27

what is a colison in terms of sending packets over ethernet

Answer 27

2 packets getting sent on the same line causing both packets to be destroyed

Question 28

what is a broadcast packet

Answer 28

a packet that is suppose to be sent to all nodes on a network

Question 29

what is the most common use for a broadcast packet

Answer 29

DHCP

Question 30

what does DHCP stand for

Answer 30

Dynamic Host Configuration Protocol

Question 31

what could be used between these two if else

Answer 31

elif

Question 32

def addition(num1,num2)

Answer 32

perimeters

Question 33

how would you hand numbers to to this funtion def addition(num1,num2)

Answer 33

x= addition(1,2)

Question 34

do the values for entering data into a functions parameters need to be in the same order as the def

Answer 34

yes

Question 35

whats the diffrence between appended and write

Answer 35

write will clear all data where as append will add

Question 36

what would go into between the blank '' to write to this file savefile = Open('exaplefile.txt','')

Answer 36

w

Question 37

what is the funtion Open used for

Answer 37

read write or appened