Final Flashcards
(31 cards)
To perform a high level format on the hard drive and make it bootable, what syntax would you use?
Format C:/S
How may bits are used in ASCII code, assuming no parity bit is used
7
If the highest frequency to be sampled is 3kHz, what is the minimum acceptable sampling rate?
6kHz.
What is the form of multiplexing in which data from different users is given different time slots within a data frame called?
Statistic Time Division Multiplexing (STDM)
Which part of the instruction tells the microprocessor what operation is to be performed?
opcode
OSI
Application Layer Presentation Session transport network data link Physical
TCP/IP
Application
Transport
Internet
Network Access Layer
What is VoIP
Voice Over IP
Data Link
Media Access
Logical Link
What is the correct order of phases of A PLC program scan
Input Scan
Execute Program
Output Scan
What are the characteristics of BJT common emitter (CE) amp
the CE has high power gain, good driver for an audio speaker and inverts the output signal
Characteristics of BJT common base (CB) amp
highest ouptut impedance, lowest current gain, and would be used to connect and antenna to an amplifier system
Characteristics of BJT (CC) amp
has voltage gain of 1
Among the three amp configuration CC, CB and CE, which has highest power gain
CE
Among the three amp configuration CC, CB and CE, highest input impedance
CB
Among the three amp configuration CC, CB and CE, has the lowest current gain
CB
Among the three amp configuration CC, CB and CE, would be a good driver for an audio speaker
CE
Among the three amp configuration CC, CB and CE, which configuration would probably be used to connect an antenna
CB
Among the three amp configuration CC, CB and CE, which inverts the output signal
CE
Among the three amp configuration CC, CB and CE, has voltage gain of 1
CC
Why is serial data more mainstream than parallel data transfer
cheaper
In a superhetrerodyne receiver what are the inputs to the mixer stage
RF IF local oscillator
Frequency
In a fm modulator what does the amplitude of intelligence signal determine
frequency deviation rate
What happen when electromagnetic waves pass from a medium of one density into another medium ticker density
optical density reftation
