OPERATING SYSTEM CONCEPTS EXAM
SCRIPT 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● CLI - Command Line interface. Answer: allows direct command
entry. Sometimes in kernel, sometimes by systems program. Can have
multiple "flavors" (shells).
●● GUI - Graphics user interface. Answer: user friendly, usually has
Mouse, keyboard, and monitor. Icons represent files, programs, actions,
etc
●● Communication. Answer: Processes may exchange information, on
the same computer or between computers over a network. May be
shared via shared memory or through message passing
●● EPROM (erasable programmable ROM). Answer: holds contents
without power
●● ROM (Read Only Memory). Answer: contains executable
instructions
, ●● File manipulation. Answer: read and write files and directories,
create and delete them, search them, list file Information, permission
management.
●● Firmware. Answer: programming that's written to a hardware
device's nonvolatile memory, control the functions of various hardware
devices and systems
●● I/O operations. Answer: running program may require I/O, which
may involve a file or an I/O device
●● Information maintenance. Answer: routine updating of databases
●● JIT compiler. Answer: Just in time, also called run-time compilation,
way of executing computer code that involves compilation during
execution of a program - at run time - rather than prior to execution
●● Layered approach. Answer: The operating system is divided into a
number of layers (levels), each built on top of lower layers. The bottom
layer (layer 0), is the hardware; the highest (layer N) is the user
interface. With modularity, layers are selected such that each uses
functions (operations) and services of only lower-level layers
●● Microkernel. Answer: Communication takes place between user
modules using message passing. It is easier to extend, more reliable (less
code in kernel mode)
SCRIPT 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● CLI - Command Line interface. Answer: allows direct command
entry. Sometimes in kernel, sometimes by systems program. Can have
multiple "flavors" (shells).
●● GUI - Graphics user interface. Answer: user friendly, usually has
Mouse, keyboard, and monitor. Icons represent files, programs, actions,
etc
●● Communication. Answer: Processes may exchange information, on
the same computer or between computers over a network. May be
shared via shared memory or through message passing
●● EPROM (erasable programmable ROM). Answer: holds contents
without power
●● ROM (Read Only Memory). Answer: contains executable
instructions
, ●● File manipulation. Answer: read and write files and directories,
create and delete them, search them, list file Information, permission
management.
●● Firmware. Answer: programming that's written to a hardware
device's nonvolatile memory, control the functions of various hardware
devices and systems
●● I/O operations. Answer: running program may require I/O, which
may involve a file or an I/O device
●● Information maintenance. Answer: routine updating of databases
●● JIT compiler. Answer: Just in time, also called run-time compilation,
way of executing computer code that involves compilation during
execution of a program - at run time - rather than prior to execution
●● Layered approach. Answer: The operating system is divided into a
number of layers (levels), each built on top of lower layers. The bottom
layer (layer 0), is the hardware; the highest (layer N) is the user
interface. With modularity, layers are selected such that each uses
functions (operations) and services of only lower-level layers
●● Microkernel. Answer: Communication takes place between user
modules using message passing. It is easier to extend, more reliable (less
code in kernel mode)
