Which one of the following phrases most accurately describes a purely capacitive circuit?
Options: Resistances provide the only opposition to current flow, Capacitive reactance provides the only opposition to current flow, The ac voltage leads the current by 90 degree, Combinations of resistance and capacitive reactance provide any opposition to current flow
The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to
Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?
Options: two pass assembler, load-and-go assembler, macroprocessor, compiler
What is the shortcut key for Spelling Check in document?
B. Shift + F7
C. Ctrl + F7
D. Alt + F7
Ans:– A ,
System prototyping helps the designer in
Options: making the programmers understand how the system will function., communicating to the user, quickly, how the system, when developed, will look like and get a feedback., giving a demo of the software, to the system manager to whom he reports, both (a) and (b)
Options: Adding ? symbol at the end of filename while saving workbook
B. Click on Worksheet tab by Holding CTRL Key and type new name
C. Double Click on the Worksheet tab and type new name
D. Worksheet cannot renamed
Ans:– C ,
What is the name given to the molecular-scale computer?
. You can move a sheet from one workbook into new book by
Options: a. Â From Edit menu choose Move or Copy sheet, mark the Create a ccopy and Click OK
b. Â From Edit menu choose Move of Copy then choose (Move to end) and click OK
c. Â From Edit menu choose Move or Copy then select (new book) from To Book list and click OK
d. Â None of above
Options: defines the fundamental method of determining effective operand addresses, are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing., performs indicated operations on two fast registers of the machine and leave the result in one of the registers., all of the above
The difference between linear array and a record is
Options: a. An array is suitable for homogeneous data but hte data items in a record may have different data type
b. In a record, there may not be a natural ordering in opposed to linear array.
c. A record form a hierarchical structure but a lienear array does not
d. All of above
Options: a method of determining which device has access to the transmission medium at any time, a method access control technique for multiple-access transmission media, a very common bit-oriented data link protocol issued by ISO., network access standard for connecting stations to a circuit-switched network