Q 1:
What is pseudo code ?
Ans:
pseudo code is the code written when converting the algorithm/ flow chart to actual code.
So it is in between the compiled code and flow chart. It is something that is not compiled but can be on
a notepad.
Q 2:
What are the Limitations of a CHECK Constraint ?
Ans:
The condition must be a Boolean expression evaluated using the values in the row being inserted or updated and can't contain sub queries, sequence, the SYSDATE,UID,USER or USERENV SQL functions, or the pseudo columns LEVEL or ROWNUM.
Q 3:
What is the maximum number of CHECK constraints that can be defined on a column ?
Ans:
No Limit.The condition must be a Boolean expression evaluated using the values in the row being inserted or updated and can't contain sub queries, sequence, the SYSDATE,UID,USER or USERENV SQL functions, or the pseudo columns LEVEL or ROWNUM.
Q 4:
What is Frequency-Hopping Spread Spectrum (FHSS)?
Ans:
Frequency-Hopping Spread-Spectrum (FHSS) is a spread spectrum modulation scheme that uses a narrowband carrier that changes frequency in a pattern known to both transmitter and receiver. Properly synchronized, they maintain a single logical channel. To an unintended receiver, FHSS appears as short-duration impulse noise. More simply, the data is broken down into packets and transmitted to the receiver of other devices over numerous "hop frequencies" (79 total) in a pseudo random pattern. Only transmitters and receivers that are synchronized on the same hop frequency pattern will have access to the transmitted data. The transmitter switches hop frequencies 1,600 times per second to assure a high degree of data security
Q 5:
What is a pseudo tty?
Ans:
In Unix, a pseudo terminal is a pseudo-device pair that provides a text terminal interface without associated virtual console, computer terminal or serial port hardware. Instead, a process replaces the role of the underlying hardware for the pseudo terminal session