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Network + > Overview of networks > Flashcards

Overview of networks Flashcards

1
Q

5 9’s

A

99.999% up time

5 min downtime per year

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2
Q

Client

A

End-user device
Laptop, tablet, phone, server, etc
Any device that connects to a network

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3
Q

Server

A

Provides resources to the rest of the network
Web, file, chat, email, etc
Can be software or hardware

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4
Q

Hub

A

Older technology
Connects clients and servers
Receives info from one port -> rebroadcasts to all other ports

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5
Q

WAP

A

Wireless Access Point
Allows wireless devices to connect to a wired network
Acts as wireless hub

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6
Q

Switch

A

Newer version of a hub
Learns what devices are on which ports
Directs traffic to single ports based on MAC address
Better security and efficiency

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7
Q

Router

A

Connects 2 networks together

Forwards traffic to and from network based on IP address

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8
Q

Media

A

Connects 2 devices

Copper, fiber optic, radio, etc

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9
Q

WAN

A

Wide Area Network
Connects 2 geographically dispersed networks together
DSL, cable, fiber optic
Connects internal network to external network

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10
Q

Client/Server model

A

Used dedicated server to provide access to files, scanners, printers and other resources
Leading model used

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11
Q

Client/Server model Pros

A

Easy admin and backup
Centralized admin
Easier management
Better scalability

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12
Q

Client/Server model Cons

A

Higher cost
Specialized network operating system
Dedicated resources

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13
Q

Peer-to-Peer model

A

Peers share resources directly with others

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14
Q

Peer-to-Peer model Pros

A

Low cost
No dedicated resources
No specialized network operating system

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15
Q

Peer-to-Peer model Cons

A

Decentralized management
Inefficient for large networks
Poor scalability
Difficult admin and backup

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16
Q

PAN

A

Personal Area Network
Few meters distance
ex: bluetooth, USB

17
Q

LAN

A

Local Area Network
300 feet distance
Small office or home
ex: Ethernet, Wifi

18
Q

CAN

A

Campus Area Network
Building centric LAN
Several miles distance
ex: university

19
Q

MAN

A

Metropolitan Area Network
25 miles distance
Connects location across a city

20
Q

WAN

A

Wide Area Network
Worldwide coverage
Does not have to be public
Consists of leased lines or VPN tunnels over the internet

21
Q

Physical topology

A

How devices are connected by media

22
Q

Logical topology

A

How actual network traffic flows

ex: bus, ring, star, hub and spoke, full mesh, partial mesh

23
Q

Bus Topology

A

Single cable runs length of network
Each machine taps into cable
Single collision domain

24
Q

Ring Topology

A

Cable runs in circular loop

Token used to prevent collisions

25
Q

FDDI Ring

A

Fiber networks

Uses 2 counter-rotating rings to redundancy

26
Q

Star Topology

A

Most popular LAN topology

Machines talk to central point

27
Q

Hub and Spoke Topology

A

Similar to star for WAN links

Connects multiple sites

28
Q

Full Mesh Topology

A

Every node connects to every other node
Optimal routing for small networks
Number of connections: x=n(n-1)/2

29
Q

Partial Mesh Topology

A

Hybrid of full mesh and hub and spoke

Cheaper than Full Mesh

30
Q

3 types of wireless network topology

A

Infrastructure mode
Ad Hoc mode
Wireless mesh technology

31
Q

Infrastructure mode

A

Wireless network
Uses WAP at centralized point
Wireless security control
Centralized management

32
Q

Ad Hoc mode

A

Wireless networks
Decentralized wireless network
No WAP
Peer-to-peer connections

33
Q

Wireless mesh technology

A

Interconnections of different types of nodes, devices, radios, etc
Redundant/Reliable
Disaster management

34
Q

IOT

A

Internet of Things

35
Q

IOT communication types

A 
WiFi
Bluetooth
RFID
NFC
Infared
Z-wave
Ant+

Network + (16 decks)

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