0417/12 Flashcards
devices connects a LAN to internet
router, broadband modem
device transmits data to a specific computer in a network
switch
device broadcasts data to all computer in a network
hub
device connects one Lan to another LAN that uses the same protocol
bridge
software
program/set of instruction
tell computer system/hardware what to do
system software
manage computer resources
ex: operational system, drives, utilities
application software
let user use computer easily
ex words
describe web conferencing
- real time collaboration/communication
- multiple users are connected to the internet
- VOIP: talk
- see the same screen
Protocols
set of rules which defines
Biometrics 😊😡
😊 cannot be forgotten 😊unique → cannot sign in 😊cannot be lost 😊 hard to forge 😊 reliable, less mistakes 😡 expensive 😡 long to set up 😡 slower to enter data than password 😡if finger is dirty 😡is voice is understandable 😡privacy?
break copyrights
- makes copy and distribute it to other people w/o permission
- make a copy and lending it w/ permission
- make a copy w/o permission from author
- use coding form original copy to put in ur programs
creates expert system [5]
1. data is collected from expert
→ create KNOWLEDGE BASE
2. RULE BASE is designed based form info from knowledge base
3. USER INTERFACE is created
→ users can interest w/ system
4. INTERFERENCE ENGINE is created
as link between user interface & knowledge base
5. system is testeduses expert system
👉user enters data into user interface
👉Qs are asked ( based on knowledge base)
👉user answer Qs - Y/N
👉further Q are asked based from previous Qs
👉interfere engine compares data
with that help in Knowledge Base
👉system produces probabilitieswhy use header/footer
- on every page 👉 consistency
- less typing 👉 saves time
👉 reduces mistakes - contains authors, file name, file paths, page no, company name & logo
formula VS function
FORMULA - statement written by users 👉 calculate - equation - contains value/ref to cells = A1+B1
FUNCTION - piece of code designed to return to specific values - has pre-defined name in software - used inside software SUM() AVR()
technical documentation
programmers, analysts - improves a system - maintain a system - upgrade a system purpose of programs purpose of system hardware requirement software requirement validation routines limitation of system file structure
🍪
small texts stored on computer rmb user's details rmb user's preferences rmb user's search rmb user's password 👉 target products
blog vs wiki
personal journal/opinion 🍑 objective/facts
single author 🍑 many authors
in reversed chronological order 🍑dt. by content & users
only author can edit blog 🍑 edited by any group member
- use link to websites
intranet
- local/restricted communication network
- small geographical location
- designed for specific group users
- contains info for a specific group users
- limited no of users
- limited traffic
- mostly LAN/WLAN/WAN
internet
global system of INTERCONNECTED computer network
- open for all
- contains internet
- limited no of users
- limited visitor traffic
- different source of info
- use standard internet protocol
