In MODEMS

Several digital signals are multiplexed
A digital signal changes some characteristic of a carrier wave
Digital signal is amplified
All of the above
None of the above
A digital signal changes some characteristic of a carrier wave  A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.
Source : webopedia.com


Related posts

Time during which a job is processed by the computer is
A. Delay time
B. Real time
C. Execution time
D. Down time
Which one of the following is termed a combination input-output device?
A. VDT
B. Keyboard
C. Printer
D. Laser Jet
When you are working on a document on PC, where is the document temporarily stored?
A. RAM
B. ROM
C. CPU
D. Flash Memory
The term gigabyte refers to
A. 1024 bytes
B. 1204 kbytes
C. 1024 megabytes
D. 1024 terabytes
Which of the following is a part of the computer that one can touch and feel?
A. Hardware
B. Software
C. Programs
D. Output
Which of the following bus types are used by the Apple Macintosh computer?
A. ISA
B. NuBus
C. EISA
D. MCA
Compiling creates a(n)
A. program specification
B. algorithm
C. executable program
D. subroutine

Leave a Reply

Your email address will not be published. Required fields are marked *