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BOLC > Network+ > Flashcards

Network+ Flashcards

1
Q

IP4 address can play one of of three roles

A

host (assignable addresses), broadcast address (comes at the end of IP address), NetID (beginning of IP address). one at a time

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2
Q

IPv4 has what kind of notation?

A

octet 3 decimal-dots. 8 bits of information

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3
Q

IPv6

A

hexadecimal. 8 groups of 16 bits= 128 bit address. seperated by colons not decimals

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4
Q

Internet Engineering Task force

A

given rules to check out and put forward to request for comments

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5
Q

DNS

A

Domain name server. changes names to IP addresses

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6
Q

hardware address

A

physical address. hard-coded into the Network Interface Card

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7
Q

what are the 3 different types of NAT?

A

Dynamic NAT, Port address, and…

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8
Q

what is a Dynamic NAT?

A

7 different public addressses for computers to share in a network

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9
Q

What is a Port Address Translation?

A

IP + Port numbers distinguish the differences of computers from a private network. 1 IP address

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10
Q

Multicast

A

selected devices, not everyone. more than two devices

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11
Q

Unicast

A

single device to single device

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12
Q

Broadcast

A

every device. stays local

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13
Q

how to find the loop back address for IPv6?

A

every piece of IP address. 0:0:0:0:0:0:0:1

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14
Q

how does a host get an IP address?

A

static or dynamic host configuration protocol

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15
Q

decimal to binary?

A

subtraction

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16
Q

binary to decimal?

A

addition

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17
Q

decimal to hexadecimal

A

decimal>binary>hex

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18
Q

subnet mask

A

a string of 1’s and then 0’s. 255’s and some other number. the 1’s are the network portion and cannot change

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19
Q

find the number of hosts

A

(2^n)-2 where n is the number of 0’s. start writing numbers from the right.

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20
Q

make a custom subnet mask

A

determine a default subnet mask first. turn bits on from the left until the requirement is met. start writing 0’s from left and figure out the number of 1’s

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21
Q

default subnet mask

A

default nature of each class. a combination of 255’s and 0’s

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22
Q

stateless autoconfiguration

A

change MAC address into an IP address. add fffe in the middle of the second characters, then change 7th bit to either a 1 or a 0

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23
Q

APIPA

A

link local address. automatic supply IP addressing. no access to internet. failsafe for local communication. used if static address and DHCP take too long to establish

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24
Q

Tesnet

A

a choice for local communication

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25
Q

IPv6 types of IP

A

unicast, global unicast address (multicast), anycast (one to one of many)

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26
Q

borrowed bits

A

the extra 1’s past the default

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27
Q

VLSM

A

variable length subnet mask. individual masks that get as close to the requirement as possible. is not as wasteful as subnetting

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28
Q

client

A

always has a server giving it access to resources

29
Q

host

A

any device with an IP address

30
Q

VLAN

A

virtual LANS. virtual area network that exists because of software, not just physical connection

31
Q

VPN

A

a LAN tunneled over a WAN connection (email, DoD)

32
Q

MPLS

A

multi-protocol label switching. one of the most populat WAN protocols. physical layout flexibility. redundency and one-to-many connection

33
Q

Peer to Peer

A

no one is in charge. systems can be a client, server, or both

34
Q

bus topology

A

A+B connectors work with T connector. 10 users. one went bad, you had to check them all

35
Q

star topology

A

devices connected to a central point

36
Q

ring topology

A

each node regenerates the signal. only one device at a time can talk (token passing). one device down can stop the whole network

37
Q

mesh topology

A

every device connects to every device. formula for number of segments- n(n-1)/2

38
Q

point to point topology

A

only need 2 IP addresses

39
Q

point to multi-point topology

A

more than one connectoin from a point to multiple points

40
Q

OSI

A

open system interconnectoin

41
Q

protocol data unit

A

what form is the date in, in any given layer of the OSI model. Do da dance so people fly back

42
Q

CSMACD/CSMACA

A

collision detection/avoidance

43
Q

DCE

A

data communication equipment. time-giving equipment

44
Q

DTE

A

data terminal equipment. routers are DTE by default, listening for other devices to give it time. give a clock rate to change to DCE

45
Q

3 types of NAT

A

PAT (port address translation) 1 IP address, SNAT(static NAT) many IP addreses, Dynamic NAT all using a pool of addresses

46
Q

routing protocol

A

rules for how data is routed. IP is a routed protocol. OSPF is a routing protocol

47
Q

3 ways a router is populated

A

static (manual entry), dynamic, physical connection

48
Q

EGP

A

exterior gateway protocol

49
Q

protocols

A

BGP-amin distance 20, EIGRP-90, OSPF- 110, RIP- 120 Is-Is- 115

50
Q

link state protocols

A

OSPF, Is-Is

51
Q

distance vector protocols

A

RIP v1&2, IGRP

52
Q

hybrid protocol

A

hop count. the closest the better

53
Q

collision domain

A

potential for devices to send at the same time. defined my switches

54
Q

broadcast domain

A

dictated by number of VLANS and all interfaces on the router

55
Q

what address does a switch use to populate MAC addresses?

A

source MAC address

56
Q

spanning tree

A

stops switching loops by blocking unnecessary paths. know which ports to block

57
Q

how many VLANS does an access port support?

A

one. other ports must be changed to trunk to support multiple

58
Q

VLAN Trunking protocol

A

managed VLANs across a switched internetwork, client switches copy configuration from main VLAN automatically

59
Q

Access control list

A

?

60
Q

VPN

A

secure network within a public network

61
Q

hybrid ctyptology

A

more security

62
Q

AAA

A

authorization, authentication, accounting

63
Q

RADIUS

A

remote access dial-in user service. connects quickly but the service is as fast as the network

64
Q

TACACS

A

terminal access controller access control system

65
Q

CHAP/MS-CHAP

A

authentication, encrypting the challange session

66
Q

EAP

A

extensible authentication protocol

67
Q

smurf attack

A

spoof IP addresss and take out device

68
Q

LEAP and PEAP

A

protocols that challange to prove authorized user with authorized access

BOLC (13 decks)

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