ClassLan: June 2006

Revision notes taken in class

VL-Bus (Vesa Local Bus) Old Expansion slot type, ran at the processor speed
PXE (Pre-boot Execution Environment) Workstation runs ghosted OS directly of server)
Watts Amps x Volts= Watts

30-pin SIMM 8-bit, FPM (Fast Page Mode)72-pin SIMM 32-bit, EDO (Extended Data Out)RDRAM 16-bit, 800MHz, 1600MBps (aka Rambus, RIMM) Blank RIMM chips are known as Continuity chips

Monochrome Could display only 1 colour Could only display text, not graphics

HGC Hercules Graphics Card It was the first video card that could display graphics
Submarining On a Passive Matrix LCD monitor if the mouse is moved rapidly it will disappear and then reappear at the destination location

Parallel Ports
Standard 150KBps, maximum transmission distance of 10 feetBidirectional Can both receive and transmit dataIEEE 1284 Two implementations of IEEE 1284 – ECP (Enhanced Capabilities Port), uses DMA, is designed to transmit data at high speed to a printer; EPP (Enhanced Parallel Port) increased bidirectional throughput (600KBps to 1.5MBps)

Firewire Firewire 400 – 400Mbps, Firewire 800 – 800Mbps, carries data over a max cable length of 4.5 meters, 100 meters over a fibre optic line

USB USB 1.1: 12Mbps/1.5Mbps – secondary channel for slower Devices USB 2.0: 480Mbps Both supported 5 meter max cable length Windows 95/NT do not support USB
(Windows 95B did)

Standard Serial 57Kbps, 50 feet

Printing Paper
Composition What it is made of – pulp, cotton (Rag Stock)
Ream 500 sheets of paper (5 reams make a box) The weight of paper is the weight in pounds of a ream
Caliper Or the thickness of paper
RET HP image enhancing technology

DNS Domain Name Server Who is www.class.lan – gives IP address to PC Resolves IP addresses to web-names FQDN – Fully Qualified Domain Name

Remote Machine ID Locates PC IP Address Identifies PC MAC Address

Repeater5-4-3 Rule 5 Network Segments-4 Repeaters – 3 Populated (segments)

Crossover Ethernet Cable Sequence (from bottom, left to right)White Orange, Orange, White Green, Blue, White Blue, Green, White, White Brown, Brown
Loopback Adapter Connectors 1-3, 2-6

OSI Layers Devices
Physical layer Cables, Physical electrical portions of NIC, defines how data gets on and off cable. Defines Media Access Method (aka Physical Layer Protocols) Repeater, Hub, Patch panel and all connectors and heads

Data Link layer NIC – It has a MAC address. Datalink split into LLC (Logical Link) – checks frame header and tail L2 Switch Bridge

Network layer Routers L3 Switches IP

Transport layer Responsible for reliable end-to-end communication monitors each packet
arriving, ‘all clear’ TCP Gateway

Session layer Concerned about the whole communication session Online transactions occur at the Session layer Gateway

Presentation layer Looks at the data Encryption Character set (ASCII) JPEG, MP3 Gateway

Application layer Service – Web service, email service, file and print sharing service, HTTP, FTP, SMP Gateway

Media Access Methods – Token Passing, Ethernet, AppleTalk

ProtocolsNetBEUI Easy to install (no addressing, only a unique computer name is needed) Small networks Small, fast and efficient

IPX/SPX Medium-sized networks, limited configuration

TCP/IP Large networks (WAN links) Has its own error correcting facilities ‘Self healing’ Advanced addressing and routing capabilities
Dialer Initiates connection with ISP

DSL ADSL

Endpoint Proper name for a DSL modem

DOCSIS Data Over Cable Service Interface Specification

BRI Basic Rate Interface (2B+1D)PRI Primary Rate Interface (23B+1D)
Interface bonding Using both Barer channels for internet

Propagation delay delay in the signal from satellite

Connection Protocol SLIP – Serial Line Internet Protocol PPP – Point-to-Point Protocol

TCP/IP Current version: Version 4 32-bit address space
New version: Version6 128-bit, represented in hex
V4 is presented in a dotted decimal version 192.168.30.10

Subnet Mask: used to id network and host portion of the IP address 255.255.255.0

Default Gateway address: IDs default router – the way in and out of a network

NetBIOS over IP Uses IP to broadcast itself
LMHOSTS (Windows\system32\etc) - This file contains the mappings of IP addresses to computer names (NetBIOS names) WINS Windows Internet Name Service WINS server – takes over responsibility for naming computers WINS works with NetBIOS – DNS works with IP

Cross over - striaght

Ep printers

printers

Raid

Raid - continued

http://www.os2warp.be/index2.php?name=RAID

Raid - mirror stripe parity 0-5

Scsi etc

Scsi drive bay for hard drives - auto terminated

DOS notes

DOS

Master Boot Record/Boot Sector – the sector where the DOS boots from. You use the switch SYS C: or format c: /s to make the MBR and the associated DOS files

Commands

DIR Directory

CD Change Directory

MD Make Directory

RD Remove Directory

DEL Delete Files

Switch- The primary command example: DIR, while

Parameter- a command that further defines the command example: /s

DIR Para.

/AH Displays hidden files only

/AS Displays system files only

/AR Displays read only files only

/B Displays files only no other info

/S Shows all files

/W Shows files in the wide format

/P Shows files page by page

/? As with any Switch gives info about switch

F3 Brings up previous command at command prompt

Right Arrow Key Reveals previous command character by character

Wild Cards *

Example dir *.com – displays .com files

Example dir *.* - displays all files

Example dir ???.* /s – shows all 3 letter files

DEL del command.com – deletes command.com

Del h*.sys – deletes system files beginning with h

*.* - deletes all files

COPY copy a:\external\*.sys c:\ – copies all .sys files in external folder

copy a:\*.com c:\ - copies all .com file to c:\ from a:\

XCOPY a:\*.* c:\ /e – copies all files and folders in the a: to the c:

COPY CON Copy Con test.txt – creates a file called test.txt

You then go o n to create the code on the subsequent lines of code

To exit and save the file press F6

TYPE Type text.txt to view that files code

Examples of .bat dir

md a:\folder1

md a:\folder2

copy a:\external\*.sys a:\folder1

del a:\folder1\*.sys

rd a:\folder1

rd a:\folder2

dir a:\*.* /s

CD \ Returns you to the Root of the drive you are on

DELLTREE

deltree folder1 – removes all the files and folders contained in folder1

PATH path a:\;a:\external – maps information about a:\ and a:\external

directories

DOSKEY Command that maps executed commands allowing you to re-use

them by pressing the up and down arrow keys

config.sys device=a:\external\himem.sys – loads hi-memory

device=a:\external\ramdrive.sys e/ 2048 – creates a ramdrive of 2MB as drive E:

keyboard.exe keyb uk,, a:\external\keyboard.sys – loads the UK keyboard layout

- example line in autoexec.bat

mouse in autoexec.bat loads mouse driver

When booting press F5 to exclude the autoexec.bat and config.sys from loading, F8 will give you a step-by-step dos boot

MSCDEX The Microsoft CD-ROM DOS driver

In config.sys –

Device=a:\external\teac_cd.sys /d:name – defines the cd-rom drive

letter and name

In autoexec.bat –

a:\external\mscdex /d:name /l:r (l=drive letter)

INTER LNK device=a:\external\interlnk.exe - networking program, interlnk PC is the client; while intersrv is the server

USB use one of two drivers in config.sys

device=a:\external\aspiohci.sys or

device=a:\external\aspiuhci.sys and in autoexec you ad:

a:\external\guest.exe - it should be noted that dos will only recognize devices formatted in FAT16

y.txt/n.txt If you are writing a script any you know you are going to be faced with a y/ n query you can add a

Or you can use the y echo | to prompt the yes answer

FDISK command fdisk 1/pri:1000 - will automatically prompt fdisk to partition an active primary partition of 1000MBs

FORMAT command format c: /s - fomats and puts mbr and files onto c:

foremat c: /q - quick format

format c: /v:"" - gives volume label

Referral Use < example="">

in a batch file: format c: /v:””

ECHO y | Use this command when you have a command that automatically says yes to a

query, another example is ECHO n |, example:

echo y | format c: /v:””

SYS c: / format c: /s Both transfer the system files and make a MBR to the target disk

Dos commands

http://www.computerhope.com/msdos.htm

ClassLan

Thursday, June 15, 2006

Revision notes taken in class

Wednesday, June 14, 2006

Cross over - striaght

Thursday, June 08, 2006

Ep printers

printers

Raid

Raid - continued

Raid - mirror stripe parity 0-5

Scsi etc

Monday, June 05, 2006

DOS notes

Thursday, June 01, 2006

Dos commands

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