Practice Operating Systems Concepts Multiple Choice Questions with Answers Quiz-4

Q.1.

In which of the storage placement strategies a program is placed in the largest available hole in the main memory?

worst fit
buddy
best fit
first fit
None of the above

Q.2.

The operating system of a computer serves as a software interface between the user and

hardware
peripheral
memory
screen
None of the above

Q.3.

Two basic types of operating systems are:

sequential and direct
batch and timesharing
sequential and realtime
batch and interactive.
None of the above

Q.4.

A base register table

allows the programmer to write base registers and displacements explicitly in the source program.
is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain.
allows multiple programs to reside in separate areas of core at the same time.
is a term that refers to the control programs of an operating system.
None of the above

Q.5.

Terminal Table

contains all constants in the program
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.
consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
a permanent table which lists all key words and special symbols of the language in symbolic form.
None of the above

Q.6.

The total time to prepare a disk drive mechanism for a block of data to be read from it is

latency
latency plus transmission time
latency plus seek time
latency plus seek time plus transmission time
None of the above

Q.7.

The instruction register

is a hardware memory device which denotes the location of the current instruction being executed.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains the address of the memory location that is to be read from or stored into.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
None of the above

Q.8.

The primary job of the operating system of a computer is to

command resources
manage resources
provide utilities
be user friendly
None of the above

Q.9.

Which of the following is a measure to test how good or bad a modular design is

Module strength
Module coupling
Static analysis
All of the above
None of the above

Q.10.

Indicate which is a pre-emptive scheduling algorithm

Round-robin
Shortest-job-next
Priority-based
All of the above
None of the above

Q.11.

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?

two pass assembler
load-and-go assembler
macroprocessor
compiler
None of the above

Q.12.

Uniform Symbols Table

contains all constants in the program
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.
consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
a permanent table which lists all key words and special symbols of the language in symbolic form.
None of the above

Q.13.

Capacity planning

requires detailed system performance information
is independent of the operating system
does not depend on the monitoring tools available
is not needed in small installations
None of the above

Q.14.

Which of the following can be accesses by transfer vector approach of linking?

External data segments
External subroutines
Data located in other procedures
All of the above
None of the above

Q.15.

Which of the following terms refers to the degree to which data in a database system are accurate and correct?

data security
data validity
data independence
data integrity
None of the above

Q.16.

In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

recognition of basic syntactic constructs through reductions.
recognition of basic elements and creation of uniform symbols.
creation of more optional matrix.
use of macro processor to produce more optimal assembly code
None of the above

Q.17.

The principles of structured programming forbid the use of

WHILE-DO
GOTO
IF-THEN-ELSE
DO-WHILE
None of the above

Q.18.

Information in a memory that is no longer valid or wanted is known as

non-volatile
volatile
surplus
garbage
None of the above

Q.19.

A hardware device that is capable of executing a sequence of instructions, is known as

CPU
ALU
CU
Processor
None of the above

Q.20.

In which addressing mode the operand is given explicitly in the instruction?

absolute mode
immediate mode
indirect mode
index mode
None of the above

Q.21.

The command interpreter

is usually the primary user interface
requires fixed format commands
is menu drive
is quite different from the SCL interpreter
None of the above

Q.22.

Which of the following is a block device

mouse
printer
terminals
disk
None of the above

Q.23.

Daisy chain is a device for

connecting a number of controllers to a device
connecting a number of devices to a controller
interconnecting a number of devices to a number of controllers
all of the above
None of the above

Q.24.

File record length

should always be fixed
Should always be variable
depends upon the size of the file
should be chosen to match the data characteristics
None of the above

Q.25.

Block or buffer caches are used

to improve disk performance
to handle interrupts
to increase the capacity of main memory
to speed up main memory read operation
None of the above

Q.26.

Part of a program where the shared memory is accessed and which should be executed invisibly, is called

semaphores
directory
critical section
mutual exclusion
None of the above

Q.27.

Indicate which, of the following, is not true about Nassi-Shneiderman charts

These charts are type of graphical design tool
These charts cannot represent CASE constructs
These charts can represent three fundamental control structures
All of the above
None of the above

Q.28.

Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy

to be fair
to balance resource utilization
to obey priorities
to be predictable
None of the above

Q.29.

The Operating system manages

Memory
Processor
Disks and I/O devices
All of the above
None of the above

Q.30.

Which of the following, is necessary to work on a computer

Compiler
Operating system
Assembly
Interpreter of the above
None of the above

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