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MCQOPTIONS
This section includes 227 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Part of a program where the shared memory is accessed and which should be executed invisibly, is called |
| A. | semaphores |
| B. | directory |
| C. | critical section |
| D. | mutual exclusion |
| Answer» D. mutual exclusion | |
| 102. |
The primary job of the operating system of a computer is to |
| A. | command resources |
| B. | manage resources |
| C. | provide utilities |
| D. | be user friendly |
| Answer» C. provide utilities | |
| 103. |
In an absolute loading scheme, which loader function is accomplished by loader |
| A. | Reallocation |
| B. | Allocation |
| C. | Linking |
| D. | Loading |
| Answer» E. | |
| 104. |
What scheduling algorithm allows processes that are logical runnable to be temporarily suspended? |
| A. | preemptive scheduling |
| B. | non-preemptive scheduling |
| C. | FIFO |
| D. | FCFS |
| Answer» B. non-preemptive scheduling | |
| 105. |
Which table is a permanent database that has an entry for each terminal symbol. |
| A. | Terminal table |
| B. | Literal table |
| C. | Identifier table |
| D. | Reductions |
| Answer» B. Literal table | |
| 106. |
A development strategy whereby the executive control modules of a system are coded and tested first, is known as |
| A. | Bottom-up development |
| B. | Top-down development |
| C. | Left-Right development |
| D. | All of the above |
| Answer» C. Left-Right development | |
| 107. |
Page-map table is |
| A. | A data file |
| B. | A directory |
| C. | Used for address translation |
| D. | All of the above |
| Answer» D. All of the above | |
| 108. |
A program that converts a high-level language program to a set of instructions that can run on a computer is called a |
| A. | Compiler |
| B. | Debugger |
| C. | Editor |
| D. | All of the above |
| Answer» B. Debugger | |
| 109. |
Which of the following is helpful in evaluating applications software what will best suit your needs? |
| A. | recommendations by other users |
| B. | computer magazines |
| C. | objective software reviews |
| D. | all of the above |
| Answer» E. | |
| 110. |
In which addressing mode the operand is given explicitly in the instruction? |
| A. | absolute mode |
| B. | immediate mode |
| C. | indirect mode |
| D. | index mode |
| Answer» C. indirect mode | |
| 111. |
When a computer is first turned on or restarted, a special type of absolute loader is executed, called a |
| A. | "Compile and Go" loader |
| B. | Boot loader |
| C. | Bootstrap loader |
| D. | Relating loader |
| Answer» D. Relating loader | |
| 112. |
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them? |
| A. | Partitioning |
| B. | Multitasking |
| C. | Windowing |
| D. | Paging |
| Answer» C. Windowing | |
| 113. |
Which of the following terms refers to the degree to which data in a database system are accurate and correct? |
| A. | data security |
| B. | data validity |
| C. | data independence |
| D. | data integrity |
| Answer» E. | |
| 114. |
The powerful text editor called PC-Write can be used by anybody by paying a small fee. Such programs are called |
| A. | Software |
| B. | Shareware |
| C. | Firmware |
| D. | Mindware |
| Answer» C. Firmware | |
| 115. |
The CPU, after receiving an interrupt from an I/O device |
| A. | halts for a predetermined time |
| B. | hands over control of address bus and data bus to the interrupting device |
| C. | branches off to the interrupt service routine immediately |
| D. | branches off to the interrupt service routine after completion of the current instruction |
| Answer» E. | |
| 116. |
Which of the following, is necessary to work on a computer |
| A. | Compiler |
| B. | Operating system |
| C. | Assembly |
| D. | Interpreter of the above |
| Answer» C. Assembly | |
| 117. |
Which of the following is false about disk when compared to main memory? |
| A. | non-volatile |
| B. | longer storage capacity |
| C. | lower price per bit |
| D. | faster |
| Answer» E. | |
| 118. |
Uniform Symbols Table |
| A. | contains all constants in the program |
| B. | a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure. |
| C. | 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 |
| D. | a permanent table which lists all key words and special symbols of the language in symbolic form. |
| Answer» D. a permanent table which lists all key words and special symbols of the language in symbolic form. | |
| 119. |
What is the name of the system which deals with the running of the actual computer and not with the programming problems? |
| A. | Operating system |
| B. | Systems program |
| C. | Object program |
| D. | Source program |
| Answer» C. Object program | |
| 120. |
A linker |
| A. | creates a load module |
| B. | is not necessary with variable partitions |
| C. | must be run after the loader |
| D. | is not needed with a good compiler |
| Answer» B. is not necessary with variable partitions | |
| 121. |
Which of the following is a measure to test how good or bad a modular design is |
| A. | Module strength |
| B. | Module coupling |
| C. | Static analysis |
| D. | All of the above |
| Answer» B. Module coupling | |
| 122. |
Trojan-Horse programs |
| A. | are legitimate programs that allow unauthorized access |
| B. | do not usually work |
| C. | are hidden programs that do not show up on the system |
| D. | usually are immediately discovered |
| Answer» B. do not usually work | |
| 123. |
Which of the following is not an advantage of multiprogramming? |
| A. | increased throughput |
| B. | shorter response time |
| C. | decreased operating-system overhead |
| D. | ability to assign priorities to jobs |
| Answer» D. ability to assign priorities to jobs | |
| 124. |
Which of the following is a type of systems software used on microcomputers? |
| A. | MS-DOS |
| B. | PC-DOS |
| C. | Unix |
| D. | All of the above |
| Answer» E. | |
| 125. |
Which of the following filename extension suggests that the file is a backup copy of another file? |
| A. | TXT |
| B. | COM |
| C. | BAS |
| D. | BAK |
| Answer» E. | |
| 126. |
In an absolute loading scheme, which loader function is accomplished by assembler. |
| A. | Reallocation |
| B. | Allocation |
| C. | Linking |
| D. | Loading |
| Answer» B. Allocation | |
| 127. |
Nonmodifiable procedures are called |
| A. | serially usable procedures |
| B. | concurrent procedures |
| C. | reentrant procedures |
| D. | topdown procedures |
| Answer» D. topdown procedures | |
| 128. |
If you do not know which version of MS-DOS you are working with, which command will you use after having booted your operating system? |
| A. | FORMAT command |
| B. | DIR command |
| C. | VER command |
| D. | DISK command |
| Answer» D. DISK command | |
| 129. |
If the number of bits in a virtual address of a program is 16 and the page size is 0.5 K bytes, the number of pages in the virtual address space is |
| A. | 16 |
| B. | 32 |
| C. | 64 |
| D. | 128 |
| Answer» E. | |
| 130. |
Scheduling is |
| A. | allowing jobs to use the processor |
| B. | unrelated to performance consideration |
| C. | not required in uniprocessor systems |
| D. | the same regard-less of the purpose of the system |
| Answer» B. unrelated to performance consideration | |
| 131. |
Which of the following are loaded into main memory when the computer is booted? |
| A. | internal command instructions |
| B. | external command instructions |
| C. | utility programs |
| D. | word processing instructions |
| Answer» B. external command instructions | |
| 132. |
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 |
| Answer» D. pages out the first page in a given area | |
| 133. |
A page fault |
| A. | is an error is a specific page |
| B. | occurs when a program accesses a page of memory |
| C. | is an access to a page not currently in memory |
| D. | is a reference to a page belonging to another program |
| Answer» D. is a reference to a page belonging to another program | |
| 134. |
Which of the following software types is used to simplify using systems software? |
| A. | spreadsheet |
| B. | operating environment |
| C. | timesharing |
| D. | multitasking |
| Answer» D. multitasking | |
| 135. |
Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and |
| A. | hold and wait |
| B. | deadlock avoidance |
| C. | race around condition |
| D. | buffer overflow |
| Answer» B. deadlock avoidance | |
| 136. |
Virtual Memory |
| A. | is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks. |
| B. | consists of those addresses that may be generated by a processor during execution of a computation. |
| C. | is a method of allocating processor time. |
| D. | allows multiple programs to reside in separate areas of core at the time. |
| Answer» C. is a method of allocating processor time. | |
| 137. |
Which of the following addressing modes, facilitates access to an operand whose location is defined relative to the beginning of the data structure in which it appears? |
| A. | ascending |
| B. | sorting |
| C. | index |
| D. | indirect |
| Answer» D. indirect | |
| 138. |
Access time is the highest in the case of |
| A. | floppy disk |
| B. | cache |
| C. | swapping devices |
| D. | magnetic disk |
| Answer» E. | |
| 139. |
An algorithm is best described as |
| A. | A computer language |
| B. | A step by step procedure for solving a problem |
| C. | A branch of mathematics |
| D. | All of the above |
| Answer» C. A branch of mathematics | |
| 140. |
Seeks analysis |
| A. | is used for analyzing paging problems |
| B. | is used for analyzing device busy problems |
| C. | is used for analyzing control-unit busy problems |
| D. | is only shown on real-time displays |
| Answer» C. is used for analyzing control-unit busy problems | |
| 141. |
The Memory Address Register |
| 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". |
| Answer» 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". | |
| 142. |
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". |
| Answer» E. | |
| 143. |
Which of the following is not true about the memory management? |
| A. | virtual memory is used only in multi-user systems |
| B. | segmentation suffers from external fragmentation |
| C. | paging suffers from internal fragmentation |
| D. | segmented memory can be paged |
| Answer» B. segmentation suffers from external fragmentation | |
| 144. |
What is the name given to the process of initializing a microcomputer with its operating system? |
| A. | Cold booting |
| B. | Booting |
| C. | Warm booting |
| D. | Boot recording |
| Answer» C. Warm booting | |
| 145. |
Which of the following rules out the use of GO TO? |
| A. | Flowchart |
| B. | HIPO-DIAGRAMS |
| C. | Nassi-Shneiderman diagram |
| D. | All of the above |
| Answer» D. All of the above | |
| 146. |
In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list? |
| A. | index addressing |
| B. | indirect addressing |
| C. | auto increment |
| D. | auto decrement |
| Answer» D. auto decrement | |
| 147. |
Which of the following are(is) Language Processor(s) |
| A. | assembles |
| B. | compilers |
| C. | interpreters |
| D. | All of the above |
| Answer» E. | |
| 148. |
If you want to execute more than one program at a time, the systems software you are using must be capable of: |
| A. | word processing |
| B. | virtual memory |
| C. | compiling |
| D. | multitasking |
| Answer» E. | |
| 149. |
Which of the following is a block device |
| A. | mouse |
| B. | printer |
| C. | terminals |
| D. | disk |
| Answer» E. | |
| 150. |
The practice of "bundling" refers to |
| A. | selling computers alone |
| B. | selling peripheral devices with computer |
| C. | selling software to run on computers |
| D. | giving away software with a computer purchase |
| Answer» E. | |