A single channel is d by multiple signals by _____________________?
A. analog modulation
B. digital modulation
C. multiplexing
D. none of these
Bits can be send over guided and unguided media as analog signal by___________________?
Bits can be send over guided and unguided media as analog signal by___________________?
A. digital modulation
B. amplitude modulation
C. frequency modulation
D. phase modulation
Which one of the following is a transport layer protocol used in internet ?
Which one of the following is a transport layer protocol used in internet ?
A. TCP
B. UDP
C. Both A and B
D. none of these
Codes consisting of bars or lines of varying widths or lenghts that are computer readable are known as__________________?
Codes consisting of bars or lines of varying widths or lenghts that are computer readable are known as__________________?
A. An ASCII code
B. A magnetic tape
C. An OCR scanner
D. A bar code
One puts information into the computer by pressing this key__________________?
One puts information into the computer by pressing this key__________________?
A. Caps lock
B. Tab
C. Enter
D. Esc
Powerful key that lets you exit a program when pushed____________________?
Powerful key that lets you exit a program when pushed____________________?
A. Arrow key
B. Space bar
C. Escape key
D. Return key
Which one of the following is not an application layer protocol ?
Which one of the following is not an application layer protocol ?
A. media gateway protocol
B. dynamic host configuration protocol
C. resource reservation protocol
D. session initiation protocol
Devices that let the computer communicate with you ___________________?
Devices that let the computer communicate with you ___________________?
A. Input
B. Output
C. Type
D. Print
A(n) _________________ camera is a peripheral device used to capture still images in a digital format taht can be easily transferred into a computer and manipulated using graphics software?
A(n) _________________ camera is a peripheral device used to capture still images in a digital format taht can be easily transferred into a computer and manipulated using graphics software?
A. digital
B. analog
C. classic
D. film
The first mechanical calculating machine was made by ________________________?
The first mechanical calculating machine was made by ________________________?
A. William Oughtred
B. Gottfried Leibnitz
C. Blaise Pascal
D. Charles Babbage