Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Network Plus > Network Terms > Flashcards

Network Terms Flashcards

1
Q

API

A

built-in software that programmers can use to make their programs network aware

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Broadcast Address

A

MAC address FF-FF-FF-FF-FF-FF has never sent to a particular NIC. All systems process frame and correct system responds with its MAC address.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define Frame

A

container for a chuck of data mnoving across a network; holds about 1500 bytes of data.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define Protocol

A

operate at all OSI layers and are defined as sets of defined rules, regulations, standards, and procedures that enable hardware and software developers to make devices and applications

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Encapsulation layer and corresponding data structure

A 
Link = frame
internet = IP packets
transport = TCP or UDP datagram
Application = data starts and ends here
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Frame

A

not all networks are ethernet networks and use the ethernet pneumonic canister-type frame. IP packets fit in all sorts of ‘canisters’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Frame Structure

A

Recipents MAC address–>Senders MAC address–>Data–>FCS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do NICs send data

A

charge on wire = 1
no charge on wire = 0
all binary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How frames are received

A

NIC receives frame and checks FCS, if correct it strips off data and sends to internal software

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How frames are sent

A

NOS software in OS hands data to NIC. NIC builds frame, adds FCS, adds MAC addresses, waits until cable is clear and NIC sends to HUB. Hub copies and sends to all systems. Every NIC without correct MAC address erases it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

IEEE

A

Institue of electronics engineer, give out MAC addresses, official term for MAC address is EUI-48 or MAC-48

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

IP

A

internet protocol (aka logical address). unique numeric identifier. 8 decimals. four 8-bit numbbers. each 8-bit number ranging from 0-255. Not burned in like MAC address but most be configured by system software

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ipconfig /all

A

windows command for displaying physical address (MAC address)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

LLC vs MAC

A

LLC - aspect of NIC that talks to OS, builds frames and creates CRC, also responsible for incoming frames
MAC - media access control; remembers NIC’s own MAC address and attaches to each frame then responsible for sending frames (these are the TWO SUB-LAYERS OF LAYER 2-data link layer in only with sub layers)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

MAC address

A

media access control address; 48-bit value burned into ROM chip in NIC.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Model

A

simplified representation of a real thing. must have all major functions of the real item

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Network Protocol

A

Medium/large networks. When physical MAC address won’t cut it. Network protocols creates unique identifiers in a logical addressing method for their systems AND create rules on how each system handles chopped packets, and how to send such packets between systems. (i.e. TCP/IP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

NIC

A

Network interface card; gives each system a unique identifer, MAC address. (operates at both layers 1 and 2; but pick 2 if cornered)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

OSI

A

international organization for standardization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

OSI Layers

A 
Layer 1 - Physical
Layer 2 - Data Link
Layer 3 - Network
Layer 4 - Transport
Layer 5 - Session
Layer 6 - Presentation
Layer 7 - Application
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

OUI

A

organizationally unique address, first 6 digits of MAC address issued to NIC manufacturer by IEEE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Physical Layer

A

defines method of moving data between computers (cables, hubs, copper cabling, fiber optics and radio waves)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Router

A

magic box that makes logical addressingg possible. connects subnets. routers use IPs not MAC addresses to route data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

TCP/IP network

A

every system has a MAC and IP address. Data is wrapped in two distinct containers (simplified).
1- Frame, outher shell which enabled data to be moved from one device to antoher
2- Packet, IP specific container that tells routers where to send data and also includes data itself

How packet is sent: 1-router stips off incoming frame; 2-reads packet to know where to send it; 3-creates a new frame and sends it on its way. (frame can be number of technologies depending on the router)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

UTP

A

unshielded twisted pair, contains four wires that can transmit and receive data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Bus and Ring

A

first generation of wired networks. Bus- single cable that connects all computers in a line (needs terminators at endpoint). Ring- connect all computers with a ring of cable. Weakness.. one break, everything goes down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

3 Cabling Types

A

Coaxial, twisted pair, fiber optic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

CAT (catergory ratings for UTP)

A 
rated in MHz, indicates highest frequency cable can handle. 
cat3=16/16/recognized
cat5=100/100/nr
cat5e=100/1000/R
cat6=250/10000/R
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Coaxial

A

contains central conductor wire surrounded by insulation material, which is then surrounded by braided metal. cable modems connect w/ rg-6 (rarely rg-59). Accessories are barrel connectors and coax splitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Duplex fiber optic cable

A

Fiber optic requires two cables (sending and receiving usually bundled together in one lump cord); popular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

EMI

A

Electromagnetic Interference; many devices generate magnetic fields, causing electric current on wire if not protected. Used in early networks w/ bayonet style connectors called BNC. Vampire taps actually pierced the cable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

F-type connector

A

Used on coaxial cable it screws on, making secure connection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Fiber Optic Connectors (3 types)

A

ST (straight tip/bayonet)
SC (stick&click)
LC (doubletip)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Fiber Optic cable components

A
  1. Glass fiber (core piece of glass)
  2. Cladding (makes light reflect)
  3. Buffer (gives material strength)
  4. Insulating Jacket; most common cable is called 62.5/125 um (core/cladding size)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Fire Ratings

A

Three is PVC (very smokey) and Plenum (expensive but less smoke). plenum is the name of the space between ceiling and acoustical tiles. Plenum used for most runs in between floors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Hybrid

A

shrinking bus/star and placing in a central box. Anything that combines physical with signaling topology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

HZ

A

Hertz; each cycle accounts for one bit of data per second. Now there is bandwidth-efficient schemes which can put more bits per signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Mesh Topology

A

Wireless topology; every computer connects to each other via two or more routes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

MMF vs SMF

A

MMF - multimode fiber; uses LED’s to send signals, wavelength is 850nm
SMF - singlemode fiber; uses lasers (eliminates modal distortion) wavelenght is 1310 or 1550nm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Network Technology

A

practical application of a topology that provides a method from getting data from one computer to another. ie Ethernet and types 10baseT, 1000BaseF, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Networking Standards, IEEE

A

Institute of electrical and electronic engineers, IEEE 802 sets standards for networking & defines frames, speeds, distances, and types of cabling. Since split into smaller subcommittes (working group) 802.3 (ethernet) and 802.11 (WLAN) among others. IEEE 1284 (parallel communication); IEEE1394 (firewire standard)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Other cables; quick and dirty connections (3)

A

Classic serial or RS-232 (not changed since 1969); parallel, 25pin used on some printers still; firewire (also point to point but fast 800mbps)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Partial vs Full Mesh

A

Full Mesh - very computer connects to every other computer. know calculations for number of connections needed. #### = y (y-1)/2. *y- number of computers
Partial Mesh - at least two machines have redundant connections.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

physical vs logical topology

A

physical=how cables physically look.

logical=how the signals travel electronically aka signaling topology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

point to multipoint

A

wireless network. similar to star but requires a intelligent device that helps systems converse. found in wired/wireless network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

point to point

A

two computers connect with no need for central device. found in wired/wireless network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

RG

A

Radio Grade; only thing that matters is OHM (how much cable resists electricity and holds electricity) most modern coax use 750ohm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

RJ Connectors

A

Registered Jack connectors use with UTP cable. Telephones use RJ-11 (supports 2 wires); networks use four-pair wires, RJ-45 connectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Star Topology

A

used a central connection box for all computers, offers fault tolerance. not as popular initially cause bus/ring cheap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Topology

A

Ways of connecting computers together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

Twisted Pair (2 types)

A

Most common type in networks, cables twisted together into a common jacket.
STP - shielded twisted pair; uncommon, not usually needed except around machinery
UTP - unshielded twisted pair; most common type of cabling today.
*8 wires surrounded by thick plastic coat, aka patch cable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

10BaseFL or 10BaseF

A

Fiberoptic multi-mode and uses an SC or ST connector. 10 mbps, baseband, 2000 meters from hub to node, starbus, physical star, logical bus.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

10BaseT

A

IEEE 802.3 created in 1990. Most popular networking tech in world at time, beating out appletalk and token ring. 99% used it. Consists of two machines connected to a hub. **10(stands for MB speed) base means carry on signal to diff). T stands for twisted pair. mose use UTP CAT3 or better with RJ-45.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

10BaseT limitations

A

no more than 100 meters in length from hub to PC.
no more than 1024 computers (no one has that many because hubs arent that big)
Speed, 10mbps, baseband signal, starbus: physical start; logical bus topology, cat3 or better with RJ-45

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

568A vs 568B standards

A

see A plus for pictures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

BPDU

A

Bridge protocol data unit; a special frame between switches that detects distances and changes to networks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Bridge

A

connects ethernet segments through uplink ports. if connecting multiple hubs, put one cable in uplink to regular port on the next hub (daisy chain)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Bridge Loops or Switching Loops

A

redundant connections only possible in a switched network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Bridges

A

acts like a repeater or hub to connect two ethernet segments, however also, filters (stop traffic from crossing one network to the next) & forwards (pass traffice from one side to the next). traffic between segments based on MAC address. Layer2 OSI and link/network of tcp/ip model. mostly used in wireless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

Broadcast vs Unicast domain

A

Unicast - messages always go to intended recipient w/ switch. Switch sends all broadcast messages to all ports
Broadcast = switch, vs hub-based is called collision domain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

Collision Domain

A

ethernet networks means a group of nodes can send frames at the same time resulting in collisions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

connecting multiple switches

A

connect anyway you want, no need to daisy chain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

crossover cables

A

one end is 568A other is 568B. you plug into regular port, not uplink

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

CSMA/CD

A

Carrier sense multiple access/ collision detection; Network access method for Etherne. Determines which computer should use a shared cable. if cable senses for 2 ms that cable is not in use, it sends. If in use, it waits. Good network has maximum of 10% collisions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

Data

A

contains actual payload. if its IP packet it will carry a bunch of other data like IP addresses, sequencing numbers, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

Diagnosing steps for hubs/switches (low-end)

A
  1. recognize problem by plugging in device and can’t connect to network
  2. examine switch for obvious damage
  3. look at link lights, not flashing, try diff port
  4. Look at cables, replace if needed
  5. replace if necessary (at emc, just reset/reboot
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

Ethernet

A

standard for a family of networking technologies that share the same basic bus topology, frame type, and network access method. Defines all issues involved with transferring data between computers. Started at Xerox, later transferred power to 802.3 IEEE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

Ethernet Frame (7)

A 
Preamble
MAC address of recipient
MAC address of sending system
type of data
data
pad
frame check sequence or CRC (cyclic redundancy check)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

Ethernet topology

A

uses hybrid star-bus, used to have hub at center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

FCS

A

Frame check sequence; ethernet term for CRC. when sending machine sends data it runs through an algorithm and attaches result (fcs). Receiving machine opens frame, uses same algorithm and compares to result. If bad, sending machine resends data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

Frames

A

all network technologies break data into smaller pieces called frames, ethernet also. Eliminates monopolizing of wire and speeds up resending of bad data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

Full Duplex ethernet

A

no more collisions. CSMA/CD disabled. Imagine a one-lane road being expanded to two lanes. speed limit is same. but doubles bandwidth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

Full vs. half-duplex

A

halfduplex are nics that can only communicate in one direction at a time (ex: walkie-talkie), full-duplex can send and receive (like a telephone call)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

Hub

A

nothing more than a repeater; reads and repeats to every other wire connected to it

75
Q

MAC addresses

A

each NIC (or node) on an ethernet network must have unique MAC binary address (48bit)

76
Q

MDI and MDIX

A

MDI is regular port on a hub or switch. MDIX is an uplink port

77
Q

Media Converter (4 types)

A

interconnects ethernet types such as:

  • 10BaseT and F.SMF to UTP/STP
  • MMF to UTP/STP
  • FIBER to COAXIAL
  • SMF to MMF
78
Q

Packet vs. Frame

A

Frames based on MAC addresses; packets are data assempled by IP protocol at layer 3 of OSI

79
Q

Pad

A

**minimum frame size is 64bytes. If its less, sending NIC will add a padding to bring it up to 64.

80
Q

Preamble

A

64-bit series of 0’s and 1’s that ends with 11. It basically gives receiving NIC time to realize a frame is coming. Added by sending NIC

81
Q

SAT table

A

when switch starts to act like a hub, but then copies MAC addresses and acts like telephone operator creating on the fly connections and creates an electronic table with associated ports to MAC address

82
Q

Sniffers

A

has NIC run in promiscuous mode reading every frame despite recipient MAC address portion of frame

83
Q

STP

A

Spanning tree protocol; eliminates problem of accidental bridge loops, detects loops and can block loop ports state to block

84
Q

Three most common issues with hubs/switches (low-end)

A

physical damage/ dead ports/ general flakiness

85
Q

Type of data

A

Ethernet frame may cary several types of data. Just show very basic level like it contains IPv4 or IPv6 data (not its an email or web page, etc.)

86
Q

RJ-45

A

pins labeled 1-8, each can have a separate voltage on it. 1&2, send data; 3&6, receive data

87
Q

Switch

A

provdes additional bandwidth, like a hub but creates point to point connection between computers w/ full bandwidth. layer 2

88
Q

10GbE

A

10 Gibabit Ethernet

89
Q

10GBaseT

A

works just like slower Ethernet standards

90
Q

100BaseFX

A

SPEED = 100 mbps; SIGNAL = baseband; DISTANCE = 2 kilometers; NODE LIMIT = 1024; TOPOLOGY = star-bus, physical start, logical bus; CABLE TYPE = multimode fiber-optic cabling with ST and SC connectors

91
Q

100BaseLX

A

long distance, uses laser, distance anywhere from 5-70 kilometers; *future of ethernet

92
Q

100BaseT

A

originally 100BaseTX competed with…T4. TX won and was dominant by late 90’s. SPEED = 100mbps; SIGNAL = baseband; DISTANCE = 100 meters between node/nub. NODE LIMIT = 1024 nodes. TOPOLOGY = star/bus topology, physical star, logical bus. CABLE TYPE = cat5e or better with RJ-45

93
Q

100BaseT NIC

A

auto negotiates to what switch can handle. All modern NICs are multispeed and auto-sending.

94
Q

1000BaseCX

A

used unique twinaxial copper cable that is shielded and 150-Ohm w/ limits of 25 meters. Not too popular today

95
Q

1000BaseSX

A

uses multimode w/ max cable length of 220-500 meters. Used LED. commonly uses LC connector. very common for peeps wanting to upgrade to gigabit ethernet.

96
Q

GBIC

A

Gigabit interface converter. SImply pull out a gbic module that supports one flavor and plug in another

97
Q

Gigabit ethernet aka 1000BaseT

A

today most common type of ethernet found on new NIC’s. late 1990’s, length is 100 meters.
Two Types:
1000BaseT; dominant
1000BaseX (with subcategories)

98
Q

MSA’s

A

transceiver plugs into equipment and lets you plug in corresponding transceiver. Helps to link different types of 10GbE networks

99
Q

SFF and MT-RJ

A

Small form factor; smaller SC connector.

MT-RJ; was the first and is still very popular with cisco. LC is a SFF connector; **most popular

100
Q

100 Block aka 110-punchdown block

A

Connector used for back of patch panels. UTP cables connect to block with a punchdown tool. 66block used on on older telecommunications

101
Q

Activity light

A

turns on when NIC card detects network traffic

102
Q

attenuation

A

as signal progresses down a wire, it gets steadily weaker

103
Q

Bonding

A

Switches that allow multiple NICS to a single machine. aka link aggregation. doubles the speed between the machine and switch

104
Q

Cable Drop

A

location where cable comes out of the wall or workstation

105
Q

Cable testers

A

Verify both ends of cable are terminated correctly.
CONTINUITY TESTER = cheap, insert both cables into tester
WIREMAP = more advanced, picks up shorts, crossed wires and more
MULTIMETER = works just like continuity testers
CABLE CERTIFIERS = can do NEXT and FEXT

106
Q

Cable Trays

A

todays standards, hold wires over drop ceilings

107
Q

Collision Lights

A

on older networks flashes when detects collision

108
Q

Crosstalk

A

Typical UTP cable has 4 pairs of wires. Sometimes one signal can jump to another, aka crosstalk. NEXT, near-end crosstalk is when a device listens to the other three cables and measures interference. FEXT, far-end crosstalk when you listen on opposite end of cable run. Measured in DB

109
Q

Demarc

A

connections from the outside world come into a building to a location called demarc. Dividing line of responsibility for the functioning network

110
Q

Demarc Extension

A

Cabling that runs from NIU to customers box. For telephones the box is a multiplexer and on LAN-side is a a powerful switch w/ patch panel. That patch panel leads to every telecommunications room

111
Q

Equipment Racks

A

central component. provides safe, stable platform for all hardware components. all are 19 inches wide but height varies

112
Q

Fiber Channel Issues (3)

A

Attenuation - when light signal weakens over long distance
Light Leakage - when bending a fiber cable too much
Modal distortion - modes are lights being shot at different angels

113
Q

Fiber testers

A

OTDR = optical time domain reflectometer; determines continuity and tells you exaclty where a break is

114
Q

Horizontal cabling

A

all cables run from telecommunication to computers horizontally. Cat 5e or CAT 6 UTP better UTP. Should always be solid core.

115
Q

LACP

A

Link aggregation control protocol; controls how multiple network devices send and receive data as a single connection

116
Q

Link Lights

A

leds that give information about state of NIC; if its connected to a hub or switch. Link light that flickers indicate problem.

117
Q

Loopback plug and loopback test

A

Test sends data out of the NIC and checks if it comes back. True loopback test you need the plug you put into NIC’s port.

118
Q

Low-voltage mounting bracket

A

outlet box that acts as a holder for the faceplate

119
Q

MDF

A

Main distribution frame - room that holds Demarc, and telephone/LAN cross-connects.

120
Q

NIC’s Types

A

UTP used RJ-45 connector and Fiber. Are either integrated into motherboard or inserted into 1 of 2 slots. PCI (older peripheral component interconnect) and the new PCIe expansion slot. and portable USB NICS

121
Q

NIU

A

in private homes. DSL or modem supplied by ISP is the network interface unit that serves as demarc for responsibility.

122
Q

Optical connection tester

A

plug end of fiber into it to see if connection is good. Hard to tell by naked eye, fiber nics dont have link lights.

123
Q

Patch cable

A

connects ports in patch panel to switch. Typically 2-5ft UTP cables stranded

124
Q

Patch panel

A

a box with a row of female ports in the frong and permanent connections in the back, where you install horizontal cables

125
Q

Raceway

A

Adhere to walls so you don’t have to drill in for cabling

126
Q

Run

A

Single piece of horizontal cabling

127
Q

SmartJacks

A

NIUs that tell ISP is the user is connected or not and for remote troubleshooting

128
Q

Solid core vs stranded core

A

UTP types, solid is better conductor but stiff and breaks easily. Opposite for stranded

129
Q

Steps to install

A

Getting a floor plan; mapping runs; determine location of telecommunications room; pulling cable; making connections; connecting t path panel; testing the cable runs; NICS

130
Q

Structured cable components (3)

A

Telecommunications room (where cables concentrate); horizontal cabling; work area

131
Q

Structured cabling

A

set of standards used over the world to install physical cabling in safe and orderly fashion. defined by (TIA/EIA)

132
Q

TDR

A

Time Domain Reflector; medium priced. can also tell you how long cable is and where a break occured… aka microscanner

133
Q

Telecommunications Room

A

technically called IDF (intermediate distribution frame)

134
Q

Temperature monitors & environmental monitors

A

monitor temperature and humidity, etc.

135
Q

TIA/EIA 606

A

covers proper labeling and documentation of labeling, patch panels and wall outlets

136
Q

Toner

A

helps trace cables, two separate devices used together. Tone generator (connects to cable and sends signal) and tone probe (emits a sound when placed near the cable connected) often called fox and hound.

137
Q

U

A

Height measurement used in racks. U = 1.75 inches. device that fits in 1.75 space is called a 1U and so on. most are 1,2 or 4U

138
Q

Extranet (aka DMZ)

A

private network that grants controlled access to users outside of the network. extension of an orgainizations intranet.

139
Q

enterprise network

A

elements of both local and wide area networks

140
Q

MAN

A

metropolitan area network - city or municipality

141
Q

CAN

A

campus area network - academic or business park. typically owned or used exclusively by an entity

142
Q

PAN

A

personal area network - two or three computers with cables and is most often seen in small or home offices

143
Q

Centralized network

A

x

144
Q

client/server network

A

x

145
Q

peer-to-peer network

A

x

146
Q

mixed mode network

A

x

147
Q

topology

A

x

148
Q

physical topology

A

x

149
Q

logical topology

A

x

150
Q

point-to-point connection

A

x

151
Q

multipoint connections

A

x

152
Q

radiated, or broadcast connection

A

x

153
Q

physical bus topology

A

x

154
Q

terminators

A

prevents signal bounce, prevents signal from bouncing back.

155
Q

physical star topology

A

x

156
Q

physical mesh topology

A

x

157
Q

hybrid topology

A

x

158
Q

physical tree topology

A

x

159
Q

star-bus topology

A

x

160
Q

star-of-stars topology

A

x

161
Q

star-ring topology

A

x

162
Q

logical bus topology

A

x

163
Q

CSMA/ CD

A

carrier sense multiple access - collision detection

164
Q

CSMA/ CA

A

carrier sense multiple access - collision avoidance

165
Q

logical ring topology

A

x

166
Q

logical star topology

A

x

167
Q

multiplexer (mux)

A

x

168
Q

802.11

A

IEEE standard which specifies an over-the-air interface between a wireless client and a base station or between two wireless clients

169
Q

802.3

A

IEEE standard used to standardized Ethernet and expand it to include a wide range of cable media

170
Q

A

A

(address record) DNS record that maps the host name to its IP address using a 32bit IPv4 address

171
Q

AAAA

A

same as A record but IPv6 using a 128bit address

172
Q

AC

A

alternating current; current that switches its flow back and forth in a circuit

173
Q

access control

A

in security terms, the process of determining and assigning privileges to various resources, objects, and data

174
Q

ACL

A

access control list - a set of data (user names, passwords, time and date, IP address, MAC address, etc) that is used to control access to a resource such as a computer, file or network

175
Q

3 types of data transmission

A

broadcast
multicast
unicast

176
Q

broadcast

A

1 to ALL

177
Q

multicast

A

1 to group

178
Q

unicast

A

1 to 1

179
Q

asynchronous communication

A

x

180
Q

synchronous communication

A

x

181
Q

broadband fiber

A

multiple channels to one medium; faster but shorter distances

182
Q

baseband fiber

A

one channel to one medium; slower but can go longer distances

183
Q

modem

A

converts analog to digital; digital to analog; end users - transcevier

Network Plus (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions