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N+ Flashcards > MESSER VIDEOS ROUND 2 > Flashcards

MESSER VIDEOS ROUND 2 Flashcards

1
Q

OSI Model

A

Layer 7 Application
Layer 6 Presentation
Layer 5 Session
Layer 4 Transport
Layer 3 Network
Layer 2 Data Link
Layer 1 Physical

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2
Q

Layer 1 Components

A

Cables
Fiber
The actual signal itself

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3
Q

Layer 2

A

Frame
MAC Address
Switch

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4
Q

Layer 3

A

IP Address
Routers
Packets

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5
Q

Layer 4

A

TCP Segments
UDP Datagrams

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6
Q

Layer 5

A

Control Protocols
Tunneling Protocols

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7
Q

Layer 6

A

Encryption SSL/TLS

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8
Q

MTU

A
  • Maximum transmittable without fragmenting an IP packet
  • 1500 bytes
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9
Q

Star Topology

A

Hub and spoke
All devices are connected to a central device

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10
Q

Ring Topology

A

Used in MANs and WANs
- Dual rings
- Built in fault tolerance

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11
Q

Bus Topology

A

Used in early LANs
Simple but prone to errors

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12
Q

Bus Topology

A

Simple but prone to errors

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13
Q

Mesh Topology

A
  • Multiple links to the same place
  • Provides redundancy, fault tolerance, load balancing
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14
Q

Hybrid Topology

A

A combo of one or more topologies

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15
Q

Wireless Topology

A

Infrastructure
- All devices communicate through an AP

Ad Hoc
- No pre existing infrastructure
- Devices communicate amongst themselves

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16
Q

Peer to Peer Network

A
  • All devices are both clients and servers
  • Easy to deploy
  • Low cost
    -Difficult to secure / administer
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17
Q

Peer to Peer Network

A
  • Devices are both clients and servers
  • Easy to deploy
  • Low cost
  • Difficult to secure / administer
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18
Q

Client Server Network

A
  • Clients connect to a central server
  • No client to client communication
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19
Q

LAN

A
  • Local Area Network
  • Ethernet and 802.11 wireless
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20
Q

MAN

A

Metropolitan Area Network

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21
Q

WAN

A

Wide Area Network
Connects LANs across long distances

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22
Q

WLAN

A

Wireless Local Area Network
Expand coverage with APs

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23
Q

PAN

A

Personal Area Network
Bluetooth, IR, NFC

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24
Q

CAN

A

Campus Area Network

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25
Q

CAN

A

Campus Area Network

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26
Q

NAS

A

Network Attached Storage

Shared storage device on the network

File level access

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27
Q

SAN

A

Storage Area Network

Looks and feels like a local storage device

Block level access

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28
Q

MPLS

A

Multiprotocol Label Switching

Packets through the WAN have labels

Any transport medium, any protocol inside

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29
Q

mGRE / DMVPN

A

Multipoint Generic Routing Encapsulation

Used with dynamic multipoint VPN

Remote sites communicate directly to each other, tunnels are built dynamically (Dynamic Mesh)

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30
Q

SD-WAN

A

Software defines WAN

Cloud based applications communicate directly to the cloud, no need to hop to a central point

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31
Q

Demarcation Point

A

Physical location that designates the connection point between the internal network and the providers network

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32
Q

SmartJack

A

A network interface unit that allows providers to remote in and troubleshoot

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33
Q

NFV

A

Network Function Virtualization

Replace physical network devices with virtual versions (quick and easy deployment)

Same functionality as a physical device (Routing, switching, firewall, load balancing)

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34
Q

Hypervisor

A

Virtual machine manager

Manages CPU, networking, security

Single console control (one screen controls everything)

35
Q

vSwitch

A

Virtual Switch

Functionality is the same as a physical switch
- Forwarding options
- Link aggregation
- Port mirroring

36
Q

vNIC

A

Virtual Network Interface Card

Configured and connected through the hypervisor

37
Q

ADSL

A

Asymmetric Digital Subscriber Line

Uses telephone lines

Download speed is faster than upload speed

38
Q

Cable Broadband

A

Coaxial cable transmission across multiple frequencies

Different traffic types (Television, internet connectivity, voice)

39
Q

Fiber

A

Uses light to transmit data

High speed/cost, long distance

40
Q

Metro Ethernet

A

Connect sites with Ethernet in a MAN

Provider network is usually fiber

41
Q

Metro Ethernet

A

Connect sites with Ethernet in a MAN

Provider uses fiber

42
Q

Twisted Pair Copper Cabling

A

Four pairs of wires with equal and opposite signals

Transmit+ Transmit-
Receive+ Receive-

RJ-45 or RJ-11

43
Q

Coaxial Cabling

A

RG-6

Used in television / internet / voice

44
Q

Twinaxial Cabling

A

Two inner conductors instead of one

Common on 10gig Ethernet and SFP+

45
Q

T568B

A

Orange white
Orange
White green
Blue
White blue
Green
White brown
Brown

46
Q

T568A

A

White green
Green
Orange white
Blue
White blue
Orange
White brown
Brown

47
Q

Fiber Communication

A

Transmission by light

No RF signal so it’s very difficult to monitor/tap

Slow signal degradation

Immune to radio interference (No RF)

48
Q

Multimode Fober

A

Short range communication, up to 2km

Inexpensive light source LED

49
Q

Single Mode Fiber

A

Long range communication up to 100km

Expensive light source Laser

50
Q

Fiber Connectors

A

LC - two tips, one for send and one for receive, small

Straight Tip - Twists in

Subscriber Connector - square connector with a locking mechanism

MT-RJ - Two strands of fiber in it, Smallest connector

51
Q

UPC and APC Connectors

A

UPC = Ultra Polished Connector, high return loss

APC = Angle Polished Connector, low return loss

52
Q

RJ-11 Connector

A

Telephone and DSL connections

53
Q

RJ-45 Connector

A

Ethernet

54
Q

F-Connector / RG6

A

Cable television/modem

55
Q

Media Converter

A

Operates at Layer 1

Converts signals of one type to another (Copper to fiber to back to copper)

56
Q

Media Converter

A

Converts signal of one type to another

Ex: Ethernet to fiber, then back to Ethernet

57
Q

Transceiver

A

Provides a modular interface

Ex: SFP module

58
Q

Bi-Directional Transceivers

A

Traffic in both direction with a single strand of fiber

Uses two different wavelengths

59
Q

SFP

A

Provides 1Gb/a fiber or Ethernet

60
Q

SFP

A

Provides 1 Gb/s fiber or Ethernet

61
Q

SFP+

A

Supports speeds up to 16 Gb/s, making it perfect for 10Gb/s Ethernet

62
Q

SFP+

A

Provides speeds up to 16Gb/s making it perfect for 10Gb Ethernet

63
Q

QSFP

A

Combines 4 SFPs into a single transceiver

Ex: QSFP+ is 40Gb/s
SFP+ is 4Gb/s

64
Q

100BASE-TX

A

100 mb/s
100m max distance
Cat5 minimum

65
Q

1000BASE-T

A

1 Gb/s
100m max distance
Minimum Cat5, but everyone uses Cat5e now

66
Q

10GBASE-T

A

10 Gb/s
Cat6 (Unshielded 55m
Shielded 100m) or Cat6a (100m both shielded and unshielded)

67
Q

40GBASE-T

A

40 Gb/s
Cat8
Up to 30m

68
Q

100BASE-FX

A

100 mb/s Ethernet over fiber
Uses lasers as a light source
400m half duplex
2km full duplex

69
Q

100BASE-SX

A

100 mb/s Ethernet over fiber
Uses LEDs as a light source
300m max distance

70
Q

1000BASE-SX

A

Gigabit Ethernet over fiber
Uses a laser as a light source
220m-550m
Short wavelength laser

71
Q

1000BASE-LX

A

Gigabit Ethernet over Fiber
550m over multimode
5km over single mode
Long wavelength laser

72
Q

10GBASE-SR

A

10 gigabit Ethernet over fiber
Multimode
“Short Range”
Multimode
26m-400m

73
Q

10GBASE-LR

A

10 gigabit Ethernet over fiber
“Long Range”
Single mode
10km max range

74
Q

WDM

A

Wavelength Division Multiplexing

Bidirectional communication over a single strand of fiber

Uses different wavelengths for each carrier

75
Q

CWDM

A

Coarse Wavelength Division Multiplexing

4 carriers at 4 different wavelengths

76
Q

DWDM

A

Dense Wavelength Division Multiplexing

Up to 160 signals

77
Q

IPv4 Loopback Address

A

127.0.0.1 - 127.255.255.254

78
Q

DHCP

A

Provides the automatic assignment of IP addresses for almost all devices

UDP 67 (Server side)
UDP 68 (Client Side)

79
Q

APIPA Address

A

169.254.0.1 - 169.254.254.255

80
Q

Unicast

A

One devices sends information to another device
1:1 communication

81
Q

Broadcast

A

Send information to everyone at once

Broadcast Domain = The range of the broadcast, usually your local subnet

IPv4

82
Q

Multicast

A

Sends information to only interested devices

IPv6

83
Q

Anycast

A

Multiple devices can have the same Anycast address

Will send data only to the closest device with that address

IPv6

N+ Flashcards (9 decks)

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