Revision notes taken in class
VL-Bus (Vesa Local Bus) Old Expansion slot type, ran at the processor speedPXE (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
posted by ClassLan @ 8:59 AM
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