0417/12 Flashcards
1
Q
devices connects a LAN to internet
A
router, broadband modem
2
Q
device transmits data to a specific computer in a network
A
switch
3
Q
device broadcasts data to all computer in a network
A
hub
4
Q
device connects one Lan to another LAN that uses the same protocol
A
bridge
5
Q
software
A
program/set of instruction
tell computer system/hardware what to do
6
Q
system software
A
manage computer resources
ex: operational system, drives, utilities
7
Q
application software
A
let user use computer easily
ex words
8
Q
describe web conferencing
A
- real time collaboration/communication
- multiple users are connected to the internet
- VOIP: talk
- see the same screen
9
Q
Protocols
A
set of rules which defines
10
Q
Biometrics 😊😡
A
😊 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?
11
Q
break copyrights
A
- 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
12
Q
creates expert system [5]
A
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 tested
13
Q
uses expert system
A
👉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 probabilities
14
Q
why use header/footer
A
- on every page 👉 consistency
- less typing 👉 saves time
👉 reduces mistakes - contains authors, file name, file paths, page no, company name & logo
15
Q
formula VS function
A
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()
