Process is
Answer: C
Correct answer: a program in execution
A program is a passive file of instructions on disk; a process is that program actually running, with a program counter, registers, a stack, its own address space and an entry in the process table. One program may have several processes running from it at once.
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Which among the following Windows do not have Start button
Answer: C
Correct answer: Windows 8
Windows 8 dropped the Start button from the desktop taskbar, replacing the Start menu with the full-screen Start screen - a change so unpopular that Windows 8.1 restored the button and Windows 10 restored the menu. Vista and 7 both have it.
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Which of the following capabilities is required for a system program to execute more than one program at a time?
Answer: D
Correct answer: multitasking
Running more than one program at a time requires multitasking: the system must hold several programs, keep the state of each, and switch the processor between them quickly enough that all appear to advance together. Virtual memory helps by letting them all be resident, but it is the switching that makes concurrency.
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What problem is solved by Dijkstra's banker's algorithm?
Answer: C
The Banker's algorithm is a resource allocation & deadlock avoidance algorithm developed by Edsger Dijkstra that tests for safety by simulating the allocation of pre-determined maximum possible amounts of all resources, and then makes a "safe-state" check to test for possible deadlock conditions for all other pending activities, before deciding whether allocation should be allowed to continue
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Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an
Answer: C
Correct answer: linker
Each object module lists the symbols it defines and the external ones it refers to. The linker gathers the modules, matches every reference to a definition, adjusts the addresses accordingly, and produces a single load module. The loader then places that module in memory.
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While working with MS-DOS, which command is used to display a list of deleted files that DOS can undelete?
Answer: C
Correct answer: UNDELETE/LIST
UNDELETE /LIST shows which deleted files DOS can still recover, without recovering any of them - a look before you commit. UNDELETE with a file specification does the recovering.
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Which command will be used to display file and directory names only, without size, date, and time information?
Answer: C
Correct answer: DIR/B
The /B (bare) switch lists names alone, with no heading, no size, date or time, and no summary line - which is what makes it useful for piping into another command or capturing to a file. /W gives a wide listing and /S descends into subdirectories.
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The action of parsing the source program into the proper syntactic classes is known as
Answer: B
Correct answer: lexical analysis
Lexical analysis is the first phase: it scans the source character by character and groups the characters into tokens - identifiers, keywords, constants, operators - classifying each. Syntax analysis then takes that stream of tokens and checks it against the grammar of the language.
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Which command of DOS is used to sort the file in reverse order?
Answer: C
Correct answer: SORT/R < filename
The /R switch makes SORT order the lines in reverse, and the file is fed in with < because SORT is a filter that reads standard input.
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Scissoring enables
Answer: A
Correct answer: a part of data to be displayed
Scissoring, or clipping, discards the parts of a picture that fall outside the window, so only the portion inside is drawn. It is what lets a small viewport show a region of a much larger drawing without the rest spilling across the screen.
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