26/02/2014

Digital electronics Professional Knowledge Bits


Digital electronics Bits

Computer instructions written with the use of English words instead of binary machine code is called
A. Mnemonics     B. Symbolic code    C. Gray code    D. Op-code
Ans:- A

Which of these multiplexing techniques is digital for combining several low -rate channels into one high-rate one
A. FDM    B. WDM    C. TDM    D. None of the above

If user A wants to send an encrypted message to user B. The plain text of A is encrypted with the _______.
A. Public Key of user A     B. Public Key of user B
C. Private Key of user A    D. Private Key of user B
Explanation: public key is known to everyone...but private key is known to that specific user.here 'A' sends an encrypted message to 'B' by using B's public key.later 'B' decrypts that message using his private key

The term MIPS refers to–
(A) Millions of instructions per second       (B) Multiple instructions per second
(C) Megabytes of instructions per second   (D) Million input processor set
Ans:- a

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