Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Thrashing

A. is a natural consequence of virtual memory systems
B. can always be avoided by swapping
C. always occurs on large computers
D. can be caused by poor paging algorithms
E. None of the above
Answer» E. None of the above
Discussion
2.

Supervisor state is

A. never used
B. entered by programs when they enter the processor
C. required to perform any I/O
D. only allowed to the operating system
E. None of the above
Answer» E. None of the above
Discussion
3.

Which of the following instruction steps, would be written within the diamond-shaped box, of a flowchart?

A. S = B - C
B. IS A<10
C. PRINT A
D. DATA X,4Z
E. None of the above
Answer» C. PRINT A
Discussion
4.

The strategy of allowing processes that are logically runnable to be temporarily suspended is called

A. preemptive scheduling
B. non preemptive scheduling
C. shortest job first
D. first come first served
E. None of the above
Answer» B. non preemptive scheduling
Discussion
5.

The Storage-to-Storage instructions

A. have both their operands in the main store.
B. which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also written into the specified storage location.
C. which perform indicated operations on two fast registers of the machine and have the result in one of the registers
D. all of the above
E. None of the above
Answer» B. which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also written into the specified storage location.
Discussion
6.

The LRU algorithm

A. pages out pages that have been used recently
B. pages out pages that have not been used recently
C. pages out pages that have been least used recently
D. pages out the first page in a given area
E. None of the above
Answer» D. pages out the first page in a given area
Discussion
7.

The principle of locality of reference justifies the use of

A. reenterable
B. non reusable
C. virtual memory
D. cache memory
E. None of the above
Answer» E. None of the above
Discussion
8.

The register or main memory location which contains the effective address of the operand is known as

A. pointer
B. indexed register
C. special location
D. scratch pad
E. None of the above
Answer» B. indexed register
Discussion
9.

Which of the following systems software does the job of merging the records from two files into one?

A. Security software
B. Utility program
C. Networking software
D. Documentation system
E. None of the above
Answer» C. Networking software
Discussion
10.

The Memory Buffer Register (MBR)

A. is a hardware memory device which denotes the location of the current instruction being executed.
B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
C. contains the address of the memory location that is to be read from or stored into.
D. 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".
E. None of the above
Answer» E. None of the above
Discussion
11.

Memory management is :

A. not used in modern operating system
B. replaced with virtual memory on current systems
C. not used on multiprogramming systems
D. critical for even the simplest operating systems
E. None of the above
Answer» E. None of the above
Discussion
12.

The FIFO algorithm

A. executes first the job that last entered the queue
B. executes first the job that first entered the queue
C. execute first the job that has been in the queue the longest
D. executes first the job with the least processor needs
E. None of the above
Answer» C. execute first the job that has been in the queue the longest
Discussion
13.

Which type of system board is the MOST likely candidate for processor upgrading if you want maximum performance and future compatibility?

A. ML
B. PCI
C. ISA
D. EISA
E. None of the above
Answer» C. ISA
Discussion
14.

Suppose that you have a the maintenance package identifies several possible field replaceable units (FRUs) that will resolve the problem. What should you do after turning the power off?

A. Replace the indicated parts, one at a time in the recommended sequence, until the problem is resolved; return unused FRUs to stock
B. Replace all of the indicated FRUs at once and return the machine to the customer if the problem is resolved
C. Follow the same procedure as in ays replace the system board first if it is on the list of possible FRUs If multiple FRUs are indicated, then software is the most likely source of the problem
D. None of the above
Answer» B. Replace all of the indicated FRUs at once and return the machine to the customer if the problem is resolved
Discussion
15.

Page stealing

A. is a sign of an efficient system
B. is taking page frames from other working sets
C. should be the tuning goal
D. is taking larger disk spaces for pages paged out
E. None of the above
Answer» C. should be the tuning goal
Discussion
16.

In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?

A. MS
B. DOS
C. MS DOS
D. 5.0
E. None of the above
Answer» E. None of the above
Discussion
17.

What product is used to clean smudged keys on a keyboard?

A. TMC solvent
B. Silicone spray
C. Denatured alcohol
D. All-purpose cleaner
E. None of the above
Answer» E. None of the above
Discussion
18.

Frames from one LAN can be transmitted to another LAN via the device

A. Router
B. Bridge
C. Repeater
D. Modem
Answer» C. Repeater
Discussion
19.

Which Motherboard form factor uses one 20 pin connector

A. ATX
B. AT
C. BABY AT
D. All of the above
E. None of the above
Answer» B. AT
Discussion
20.

Which of the following condition is used to transmit two packets over a medium at the same time?

A. Contention
B. Collision
C. Synchronous
D. Asynchronous
E. None of the above
Answer» C. Synchronous
Discussion
21.

The part of machine level instruction, which tells the central processor what has to be done, is

A. Operation code
B. Address
C. Locator
D. Flip-Flop
E. None of the above
Answer» B. Address
Discussion
22.

Which of the following refers to the associative memory?

A. the address of the data is generated by the CPU
B. the address of the data is supplied by the users
C. there is no need for an address i.e. the data is used as an address
D. the data are accessed sequentially
E. None of the above
Answer» D. the data are accessed sequentially
Discussion
23.

To avoid the race condition, the number of processes that may be simultaneously inside their critical section is

A. 8
B. 1
C. 16
D. 0
E. None of the above
Answer» C. 16
Discussion
24.

Process is

A. program in High level language kept on disk
B. contents of main memory
C. a program in execution
D. a job in secondary memory
E. None of the above
Answer» D. a job in secondary memory
Discussion
25.

From what location are the 1st computer instructions available on boot up?

A. ROM BIOS
B. CPU
C. boot.ini
D. CONFIG.SYS
E. None of the above
Answer» B. CPU
Discussion
26.

Missing slot covers on a computer can cause?

A. over heat
B. power surges
C. EMI.
D. incomplete path for ESD
E. None of the above
Answer» B. power surges
Discussion
27.

When installing PCI NICS you can check the IRQ availability by looking at

A. dip switches
B. CONFIG.SYS
C. jumper settings
D. motherboard BIOS
E. None of the above
Answer» E. None of the above
Discussion
28.

With respect to a network interface card, the term 10/100 refers to

A. protocol speed
B. a fiber speed
C. megabits per seconds
D. minimum and maximum server speed
E. None of the above
Answer» D. minimum and maximum server speed
Discussion
29.

The list of coded instructions is called

A. Computer program
B. Algorithm
C. Flowchart
D. Utility programs
E. None of the above
Answer» B. Algorithm
Discussion
30.

The microcomputer, Intel MCS-80 is based on the widely used Intel

A. 8080 microprocessor
B. 8085 microprocessor
C. 8086 microprocessor
D. 8082 microprocessor
E. None of the above
Answer» B. 8085 microprocessor
Discussion
31.

The 2's complement of a binary no. is obtained by adding.....to its 1's complement.

A. 0
B. 1
C. 10
D. 12
E. None of the above
Answer» C. 10
Discussion
32.

A systems programming language for microcomputers in the Intel family is

A. PL/C
B. PL/CT
C. PL/M
D. PLA
E. None of the above
Answer» D. PLA
Discussion
33.

Which is a non-standard version of a computing language?

A. PROLOG
B. APL
C. Army
D. PL/1
E. None of the above
Answer» D. PL/1
Discussion
34.

How many bit code is used by Murray code for TELEPRINTER machines.

A. 4
B. 5
C. 9
D. 25
E. None of the above
Answer» C. 9
Discussion
35.

A datum that indicates some important state in the content of input or output is

A. Sequence
B. Sentinel
C. SIO
D. Sibling
E. None of the above
Answer» C. SIO
Discussion
36.

Which of the following is still useful for adding numbers?

A. EDSAC
B. ENIAC
C. Abacus
D. UNIVAC
E. None of the above
Answer» D. UNIVAC
Discussion
37.

The examination and changing of single bits or small groups of his within a word is called

A. Bit
B. Byte
C. Bit manipulation
D. Bit slice
E. None of the above
Answer» D. Bit slice
Discussion
38.

Which computer has been designed to be as compact as possible?

A. Mini
B. Super computer
C. Micro computer
D. Mainframe
E. None of the above
Answer» D. Mainframe
Discussion
39.

Which method is used to connect a remote computer?

A. Device
B. Dialup
C. Diagnostic
D. Logic circuit
E. None of the above
Answer» C. Diagnostic
Discussion
40.

Which type of system puts the user into direct conversation with the computer through a keyboard?

A. Real time processing
B. Interactive computer
C. Batch processing
D. Time sharing
E. None of the above
Answer» C. Batch processing
Discussion
41.

The process of communicating with a file from a terminal is

A. Interactive
B. Interrogation
C. Heuristic
D. All of the above
E. None of the above
Answer» C. Heuristic
Discussion
42.

A common boundary between two systems is called

A. Interdiction
B. Interface
C. Surface
D. None of the above
Answer» C. Surface
Discussion
43.

Any type of storage that is used for holding information between steps in its processing is

A. CPU
B. Primary storage
C. Intermediate storage
D. Internal storage
E. None of the above
Answer» D. Internal storage
Discussion
44.

The term referring to evacuating the content of some part of the machine is known as

A. Dump
B. Enhancement
C. Down
D. Compiler
E. None of the above
Answer» B. Enhancement
Discussion
45.

A single packet on a data link is known as

A. Path
B. Frame
C. Block
D. Group
E. None of the above
Answer» C. Block
Discussion
46.

A name applied by Intel corp. to high speed MOS technology is called

A. HDLC
B. LAP
C. HMOS
D. SDLC
E. None of the above
Answer» D. SDLC
Discussion
47.

The radian of a number system

A. Is variable
B. Has nothing to do with digit position value
C. Equals the number of its distinct counting digits
D. Is always an even number
E. None of the above
Answer» D. Is always an even number
Discussion
48.

The section of the CPU that selects, interprets and sees to the execution of program instructions

A. Memory
B. Register unit
C. Control unit
D. ALU
E. None of the above
Answer» D. ALU
Discussion
49.

A computer program that converts assembly language to machine language is

A. Compiler
B. Interpreter
C. Assembler
D. Comparator
E. None of the above
Answer» D. Comparator
Discussion
50.

The time required for the fetching and execution of one simple machine instruction is

A. Delay time
B. CPU cycle
C. Real time
D. Seek time
E. None of the above
Answer» C. Real time
Discussion