Key Terms and Concepts

Terms

Discussion of Key Terms audio ra 3min
Acoustic Coupler
ANSI
Answer
Answer
Asynchronous
Asynchronous
bandwidth
Baseband
baud
BBS
Bell 103
Bell 202
Bell 212
binary code
bits per second
Broadband
Bus
Carrie Sense
Carrier
CCITT V.22bis
character prompt
Cluster
Coaxial Cable
Contention Method
data bits
downlink
download (capture)
Echo Off (no echo)
Echo On (Local Ec)
Echo On (Local Echo
EHF
ELF
Fiber Optic
Full Duplex
Full Duplex
geostationary
gigahertz
Half Duplex
Half Duplex
Handshaking
HF
ISO OSI
kilohertz
LAN
LF

log file
MAN
megahertz
MF
Microwave
Modem
Narrow Band
Originate
Originate
PAL
Parallel
parity
polar orbit
Radio Frequency Spectrum
Ribbon Cable
Ring
scan lines
Serial
Serial
SHF
Simplex
Simplex
Star
start bit
stop bit(s)
Synchronous
Synchronous
timed delay
Token PasFile Server
Topology
transponder
Transponder
TTY
Twisted Pair
UHF
uplink
upload (transmit)
VF
VHF
Video Conferencing
video lines
video retrace (video blanking)
VLF
VT100
WAN
XON - XOFF

Questions

1. How may geostationary satellites would be required to cover the entire earth ? Where would you locate them and why ?

Essay Q1 audio ra 20min


2. Suppose someone from Honolulu connects to ourfrom Honolulu connects to ourm Honolulu connects to our VAX in Denton via phone line. How long will it take for a character the person types to appear on his/her screen.

Essay Q2 audio ra 5min


3. Explain the relationship between the terms azimuth, elevation, longitude, and latitude. How are they used to decide where to pointude. How are they used to decide where to point a satellite dish ?

Essay Q3 audio ra 3min


4. Suppose you are the minister of education in Gondawannaland. Your job is to decide what kinds of telecommunication systems should be made available to students in education.

1) select five (5) available alternatives and 2) describe why each would or would not be recommended by you. Limit your answer to this page.

Essay Q4 audio ra 5min


5. The following message was transmitted over an asychronous communication line with the settings 7,E,1asynchronous communication line with the settings 7,E,1. The order of transmission is (left to right) start bit, parity bit, data bits (high order first), stop bit(s). Decipher the message.

1010100111111100111111010100111