INSY 3303 UTA Scott Johnson exam 3

Network Circuit

Untwisted (cheapest)

Twisted (medium)

Fiber Optic (expensive)

SOHO

small office/home office

WAP

Wireless Access Point

WAP is

Switch or HUB

Omni-directional

in all directions simultaneously

Directional

goes in one direction

NOS

Network Operating System

Topology

bus, star, ring, hybrid, wireless

Bus

Straight line

Ring

Bus with connected end

Trace

Hierarchy

Star

Wireless AP

Mesh

Grid call connected

Hybrid

combination

Hub

Bus

Switch

Star

Forward Table

Routing table for switch

CSMA/CD

Carrier Sends Mutiple Access/Collision Detection

CSMA/CA

Carrier Sends Multiple Access/Collision Avoidance

CSMA/CD is

wired

CSMA/CA is

wireless

WEP

Weakest/oldest security

WPA

Better

WPA2

Wireless network encryption system.

Public has a

Master Key

Word driving

Driving around and hacking into wifi

Word chalking

Putting chalk on sidewalk for less skilled person to hack

LAN Design

Seperate servers for wireless and wired

LOAD Balanacing

Router for server farm

SAN

Storage Area Network

SAN is

A specialized network of high-speed storage devices for big files

NAS

Network Attatched Storage

NAS is

A network where people can store files to share

RAID

Redundant Array of Inexpensive Disks

VLAN

Layer 3

VLAN means

Virtual Local Area Network

VLAN runs at

Speed of switch

switch backbone

Distribution Layer

LAN devoted to data storage is a

SAN.

MDF/CDF

Main Distribution Frame/Central Distribution Frame

Routed BN

"Subnetted" or "hierarchical backbones"

Routed BN is

Campus layer (core)

Routers seperate ______

Subnet

Multi-switch VLAN

Need VLAN Trunk

Multi-switch VLAN get to

pick who goes in one subnet

VLAN BN

Get more benefits

BN Networks

TO FORWARD & ROUTE CONTENT & MESSAGES & SERVE UP CONTENT

Reducing Network Demand by

Restricting Applications

Restrict Application types

1) Stop it

2) Do NOT do it during PEAK

3) By job function who gets to use it

FCC

Federal Communications Commission

Dedicated Circuit

Losing Popularity

CSU/DSU

Channel Service Unit/Data Service Unit

CSU/DSU is also known as

network interface card (NIC)

Most popular are

Ring, star, & mesh

T-Carrier Service

Most common form of dedicated

FIRST TO GO

Sonet & SDH

Almost identical

Sonet

The american standard (popular)

Packet Switch

PAD- Packet Assembly, Disassembly

PVC

Permanent Virtual Circuit

PVC is set up in

2 locations

SVC is a

switch

CIR

Committed Information Rate, is the amount of bandwidth that is guaranteed.

MAR

Maximum Allowable Rate

DE

Discard Eligable

DE is

All packets that exceed the CIR are marked

POP

Point of Presence

Frame Relay

Commonly used WAN

WILL GO AWAY

MPLS

Multi-Protocol Label Switching

MPLS layer

2.5

MPLS layer has ___ bits

4

VPN

Virtual Private Network

What does VPN do?

Provides private packet switch over public internet

Intranet

Company-private

Extranet

Links companies and supplies

Access VPN

Employee can access it at home