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Network+ chapter 1 > Acronyms > Flashcards

Acronyms Flashcards

1
Q

DLC

A

Data link control protocols (layer 2)
defines how data is transferred between a computer’s motherboard and mass storage devices

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2
Q

MAC

A

Media Access control

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3
Q

IP

A

internet protocol

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4
Q

PDU

A

Protocol Data Unit (transmission units, different group of data on each OSI layer)

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5
Q

MTU

A

Maximum transmission Unit (within IP header, determines the size of data you can send on network without having to fragment)

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6
Q

MAN

A

metro area network

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7
Q

WAN

A

wide area network

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8
Q

WLAN

A

Wireless local area network

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9
Q

PAN

A

personal area network

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10
Q

CAN

A

Campus area network

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11
Q

SAN

A

Storage area network

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12
Q

SDWAN

A

Software defined area network

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13
Q

MPLS

A

multiprotocol label switching (can send any packets through this)

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14
Q

mGRE

A

multipoint generic routing encapsulation (defines where all locations of offices and labels them)

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15
Q

vNIC

A

virtual network interface card (allows the virtual machine to communicate with network)

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16
Q

NFV

A

network function virtualization (replaces physical network devices)

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17
Q

DSL

A

digital subscriber line (download speed faster than upload speed) 200 Mbit/s downstream 20Mbit/s up

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18
Q

DOCSIS

A

data over cable service interface specification

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19
Q

SFP

A

Small form factor pluggable

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20
Q

QSFP

A

quad small form factor pluggable (4 channels)

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21
Q

WDM

A

wavelength division multiplexing (bidirectional over single fiber)

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22
Q

CWDM

A

coarse wavelength division multiplexing (10GBASE-LX4)(4x3,125 G/sec)

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23
Q

DWDM

A

Dense wavelength division multiplexing (160 signals, 1.6 Tbit/s)

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24
Q

APIPA

A

automatic private IP addressing (link local address)(cant communicate to internet)

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25
Q

NAT

A

network area translation
(map private IP addresses before connecting to internet)

26
Q

VLSM

A

Variable length subnet masks (allows the admin to determine the mask)

27
Q

OUI

A

organizationally unique identifier (first 3 parts of MAC address (manufacturer ID))

28
Q

IANA

A

internet assigned numbers authority (provides address blocks to RIRs)

29
Q

RIR

A

regional internet registries (assigns smaller subnet blocks to ISPs)

30
Q

ISP

A

internet service provider (provides consumer with IPv6)

31
Q

NS

A

Neighbor solicitation (comes from IPv6 looking for a device)

32
Q

NA

A

Neighbor advertisement (responding the NS)

33
Q

TCP

A

transition control protocol (sends and receives an acknowledgement back)

34
Q

UDP

A

user datagram protocol (just sends data)

35
Q

VPN

A

virtual private network (encrypts data)

36
Q

TLD’s

A

top level domains (.com .org .net .edu)

37
Q

TTL

A

time to live (specifies how long a cache is available)

38
Q

FQDN

A

fully qualified domain name (name of a website)

39
Q

RR

A

resource records (database records of domain name services)

40
Q

SOA

A

start of authority (defines what the DNS server is managing)like serial number, refresh retry timeframes and TTL

41
Q

A and AAAA address records

A

defines if IPv4 or IPv6

42
Q

CNAME

A

canonical name records (provides an alias to an already existing server)

43
Q

SRV

A

service record (finds a specific service)

44
Q

MX

A

mail exchanger record (determines host name for mail server)

45
Q

NS

A

name server record (list the name servers for a domain)

46
Q

PTR

A

pointer record (provide IP address and gives a FQDN)

47
Q

TXT

A

text record

48
Q

SPF protocol (type of TXT record)

A

sender policy framework (checks mail server to verify mail was sent from an authorized host)

49
Q

DKIM (type of TXT record)

A

domain keys identified mail (digitally sign your outgoing mail)

50
Q

SDN

A

software designed networking

51
Q

Spine and leaf architecture

A

all leaf switched connect to each spine switch

52
Q

east and west traffic

A

traffic between devices in the same data center

53
Q

north and south traffic

A

connects to an outside device

54
Q

iSCSI

A

internet computer systems interface (sends SCSI commands over an IP network)

55
Q

IaaS

A

infrastructure as a service (still responsible for the management of software)

56
Q

SaaS

A

software as a service (you have everything provided)

57
Q

PaaS

A

platform as a service (you use pages or parts of things for yourself)

58
Q

cloud model (public, community, private, hybrid)

A

public-available to everyone
private-your own virtual local data center
community- several organizers use it
hybrid- public and private

59
Q

DaaS

A

desktop as a service

60
Q

VDI

A

virtual desktop infrastructure

61
Q

orchestration

A

entire application instances can be instantly provisioned (moved around the world or add security policies)

Network+ chapter 1 (9 decks)

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