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A+ Vocab > Net+ > Flashcards

Net+ Flashcards

0
Q

OUI

A

Organization Unique Identifier

First 6 hex #s on a MAC address

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1
Q

OSI

A

Open System Interconnection

Seven layer model

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2
Q

Device ID

A

Last 6 #s on a MAC address

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3
Q

FCS

A

Frame Check Sequence

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4
Q

CRC

A

Cyclic Redundancy Check

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5
Q

Broadcast Address

A

ff-ff-ff-ff-ff-ff

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6
Q

LLC

A

Logical link control

Makes up the frames
Erases frames not for it’s Mac

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7
Q

CAM

A

Content Address Memory

Remembers MAC address for connected ports on a switch

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8
Q

NOS

A

Network Operation System

Ability to join networks

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9
Q

ACK

A

Aknologment of packets sent

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10
Q

Netstat-a

A

Command that shows all sessions/ connections on a windows computer

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11
Q

API

A

Application Program Interface

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12
Q

TCP

A

Transmission Control Protocol

Connection orientated protocol

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13
Q

UDP

A

User Datagram protocol

Fire and forget

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14
Q

Model distortion

A

Only on multi mode

Signals sent at same time don’t arrive at same time

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15
Q

Fiber connectors

A

ST
SC
LC-

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16
Q

802.11

A

Wireless a-b-g-n

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17
Q

802.3

A

Ethernet

802.3ab- 10 Giabit Ethernet

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18
Q

CSMA/CD

A

Carrier sense multiple access/ collision detection

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19
Q

STP

A

Spanning Tree Protocol

Eliminates bridging loops/ switch loops

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20
Q

BPDU

A

Bridging Protocol Data Unit

Packet used in STP

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21
Q

OSI level-1

A

Physical

Cabling/ wireless / Hubs

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22
Q

OSI Level- 2

A

Data Link

MAC address
NIC - LLC,MAC

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23
Q

OSI- Level-3

A

Network

IP address
Routers- packets

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24
Q

OSI- Level 4

A

Transport

Assembly / disassembly

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25
Q

OSI Level- 5

A

Session

Indicate, accept/ close

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26
Q

OSI- Level- 6

A

Presentation

Standardization of data/ least used

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27
Q

Application

Network aware API

A

OSI-level- 7

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28
Q

MT- RJ

A

Fiber small form factor connector

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29
Q

GBIC

A

Gigabit interface converter

Removable port on switch

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30
Q

SONET

A

= WAN fiber

See fiber standards 10baseSR +

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31
Q

MSA

A

Multi source agreement

Card on switch

Can change connectors

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32
Q

IDF

A

Intermediate Distribution Frame

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33
Q

MDF

A

Main Distribution Frame

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34
Q

Demarc

A

Connects internal to external networks

Separation of responsibility

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35
Q

NIU

A

Network Interface Unit

Home

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36
Q

Multiplexer

A

Fiber patch panel LAN side

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37
Q

Wire Map

A

Shows shorts and crossed wires

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38
Q

NEXT

A

Near End Crosstalk

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39
Q

FEXT

A

Far End Crosstalk

- at the switch

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40
Q

Bonding or Link aggration

LACP

A

Link Aggration Control Protocal

Combining multiple NICs

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41
Q

SPS

UPS

A

Standby Power Supply

Uninterrupted Power Supply

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42
Q

Voltage event recorder

A

Tracks voltage over time

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43
Q

ICMP

A

Internet control message protocol

  • PING
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44
Q

DSCP

A

Differentiated service Code Point

  • Flag
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45
Q

DHCP

A

Scope of IPs to give out
Ports 67 68
BootP - old DHCP

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46
Q

Rout print

A

CMD:

Shows routing table

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47
Q

Multihoming

A

Using more then one NIC

For speed or back up

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48
Q

DOCSIS

A

Date Over Cable Service Interface specifications

- cable modems / not Ethernet

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49
Q

ATM

A

Asynchronous Transfer Mode

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50
Q

basic NAT

A

network Address Translation

-old way limited # of IPs

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51
Q

Dynamic NAT

A

Shared from a pool of IPs less then the # of CPUs

-pooled NAT

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52
Q

PAT

A

Port address translation

  • routers get 1 public IP
    Used port #s to identify CPUs
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53
Q

SNAT

A

Static NAT

- incoming data gets routes to a single machine

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54
Q

RIP

A

Uses Distance vector / hop count
For routing
Max 15 hops
Talks every 30sec

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55
Q

MTU

A

Maximum transmission Unit

1500 byts = 1 MTU

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56
Q

RIPv2

A

Allows for VLSM

- variable length subnetting masking

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57
Q

BGP

A

Boarder Gateway Protocall

Connects AS systems

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58
Q

AS

A

Automated systems
Doesn’t use IP addresses

EGP- external gateway program
IGP - interior gateway protocols

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59
Q

OSPF

A

Open Shortest Path First

Creates best way to route packets
Uses LSAs

Convergence in seconds

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60
Q

LSA

A

Link State Advertisements

Routers communicate who’s around them- OSPF

61
Q

DR

A

Designated router

Athurative router

62
Q

BDR

A

Backup designated router

In the backbone

63
Q

NMS

A

Network management software

How routers talk
Allows admin to manage devices

64
Q

Tracert

A

CMD: Shows path of packet

Unix/linx traceroute

MTR- lynix gives report takes longer

65
Q

NTP

A

Network time Protocal

Synchronized clocks on routers

66
Q

TFTP

A

Trivial file transfer protocol

Used on internal networks

67
Q

IGMP

A

Internet group management protocol

Sends data to select people

68
Q

Well known ports

A

0-1023

69
Q

Ephemeral/ registered ports

A

1024- 49151

70
Q

Dynamic/ private port #s

A

49152-65535

71
Q

IIS

A

Internet information services

Allows you to run a web server

72
Q

Telnet

A

Allows access to remote clients
No security
Plane text

Port 23

73
Q

SSH

A

Secure shell

Secure version of Telnet

Port# 22

74
Q

TLS

A

Transport layer security

New version of SSL
Secure sockets layer

75
Q

RSH

A

Remote shell

Scripting for Telnet

76
Q

RCP

A

Remote copy protocol

Copy’s files from remote server with out using FTP

77
Q

TLD

A

Top level domain

Ex: . Com . Mil . Org…

78
Q

Root is?

A

” . “

79
Q

FQDN

A

Fully qualified domain name

80
Q

Zone

A

A container that is filled with IPs and FQDNs

81
Q

record

A

A line in a zone(folder) showing IP to FQDNS resolution

82
Q

SOA

A

Start of authority

Authoritative DNS Server/ boss server

83
Q

NS

A

Name server

Takes updates from SOA

84
Q

NSlookup

A

CMD: shows your DNS server

85
Q

BIND

A

Original DNS / Linux uses BIND

86
Q

“A” record

A

Normal IP address to name .. Record

87
Q

MX - record

A

Mail record

88
Q

“AAAA”

A

For an ipv6 web address to name

89
Q

Primary Zone

A

Holds all records A , AAAA, MX

90
Q

Secondary zone

A

Backup DNS server

91
Q

NetBios/ Netbui

A

Windows version of DNS

Now NetBios over TCP/IP works together

92
Q

Samba

A

Let’s non windows CPUs act like windows

93
Q

SMB

A

Server message block

Ability to announce its name over a network - old

Same as CIFS now

94
Q

CIFS

A

Common internet file system

Ability to announce its name over a network

95
Q

Dynamic DNS

A

DHCP will update the DNS servers

IP address that change get updated

96
Q

DNSSEC

A

DNS security

Prevents anyone from making changes to DNS

97
Q

DES

A

Data encryption standard

  • block encryption ( in chunks)
  • small bit encryption

Kinds of DES
3DES
IDES blowfish

98
Q

RC4

A

Rivets cipher

- streaming cipher

99
Q

AES

A

Advanced Encryption Standard
Newest best
- large block encryption
128-192-256 but size

100
Q

PKI

A

Public key cryptology

RSA

Private key decrypts

101
Q

CA

A

Certificate authority

- issues public keys

102
Q

Hash

A

Math that only goes one way encryption

103
Q

MD5

A

Most popular type of Hash

104
Q

SHA

A

Secure hash algorithm

105
Q

CRAM

A

Sends hash over and over to keep authenticating
Hard to crack
For server

106
Q

PGP

A

Pretty good privacy

Create your own certificate among friends

107
Q

NAC

A

Network access controls

Minimum standards set to access/ join a network

108
Q

ACL

A

Access control list

List of users
And what they are allowed to do

109
Q

-MAC

A

Mandatory access control

- ever resource is assigned a label

110
Q

DAC

A

Discretionary access control

Owner controls access

111
Q

RBAC

A

Role based access control

Creates groups for access
Users are assigned to groups

112
Q

PPP

A

Point to point

Dial up

113
Q

PAP

A

Password authentication protection

Dial up / bad plan text

114
Q

CHAP

A

Challenge handshake auth. Protocal

Encrypted passwords
Prevents man in the middle
Re authenticates over and over

115
Q

MS- CHAP

A

Microsoft version chap

Most secure

116
Q

AAA

A

Authentication
Authorization
Accounting

117
Q

RADIUS

A

Remote authentication dial in users service

NAS- network access servers

Uses AAA

TACACS is ciscos version

118
Q

Kerberos

A

Best way to authenticat in a domain

Use time stamps 
Issues tickets (SID- security identifier
119
Q

EAP

A

Extensible authentication Protocal

120
Q

EAP-PSK

A

EAP- personal shares key
Wireless code
Popular for home use
Uses AES

121
Q

EAP-TLS

A

EAP- Transport layer security
RADIUS server
Office environment
AAA environment

122
Q

802.1X

A

Port authentication network access control

Like RADIUS and Kerberos

123
Q

IPSec

A

Internet Protocal security
Built into IPv6

Works on all levels of OSI

ESP encapsulated security payload
ISAKMP
IEK

124
Q

SCP

A

Security copy Protocal

Used SSH

125
Q

SFTP

A

Secure file transpher potocol

Encrypted FTP

126
Q

SNMP

A

Simple network managment protocol
- a way to query a device / switch

Angents record the info

127
Q

MIB

A

Managment information base

Server that holds info on servers

128
Q

LDAP

A

Lightweight directory access protocol

Updates all active directories
When changes accrue

129
Q

NTP

A

Network time protocol

Uses port 123

130
Q

VPN

A

Virtual private network

Secure way to get into a network from a secure location

131
Q

PPTP

A

Point to point Tunneling protocol

1 to 1

132
Q

RRAS

A

Routing and remote access service

Software on server for VPNs

L2TP- layer2 tunneling (Cisco software)

133
Q

ROAS

A

Router on a stick

Connects VLANS with a router

134
Q

802.1Q

A

Protocol for Trunking

Vender neutral

135
Q

Trunking

A

Transfer clan traffic between two switches

136
Q

VTP

A

Virtual trunk protocol

Automatically updates vlan data base on switches

137
Q

Load balancing

A

Spreads out traffic that is trying to access a resource

138
Q

DNS load balancing

A

Uses round robin traffic balancing

139
Q

IDS

A

Intrusion detection system

Alerts you of bad things happening to firewall

140
Q

IPS

A

Intrusion prevention system

Can react to attacks

141
Q

NIPS

A

Network intrusion prevention system

Over a network

142
Q

802.1X

A

Port authentication

Compairs against a list of rules for that port

Allow list of MAC address

143
Q

RIR

A

Regional internet register

144
Q

Toredo

A

Microsoft version of IPv6 tunneling

145
Q

TSP

A

Tunnel setup protocol

146
Q

6to4

6in4

A

Gets IPv6 past IPv4 routers

147
Q

Stateless IPv6

A

Just hands out DNS info

148
Q

DSSS

A

Direct sequence spread spectrum

Supported by 802.11b

149
Q

OFDM

A

Orthogonal frequency division multiplexing

Supported by 802.11a , g, n,

A+ Vocab (4 decks)

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