Osg202 - Study guides, Class notes & Summaries

: An Operating System is? - ️️A program that acts as an intermediary between a user of a computer and the computer hardware _______ is the rapid switching of the CPU between multiple processes in memory - ️️toicankey Multi-programming ____ gives users the appearance that their programs are being completely loaded in main - ️️Virtual memory ____ include(s) every peripheral unit in the system such as printers, disk drives, CD/DVD drives, flash memory, keyboards, and so on. - ️...

Which type of OS structure does give each user a subset of the resource instead of exact copying entire of underlying real machine? A. Virtual Machine B. Extend Kernel C. Extra Kernel D. ExoKernel - ️️D Which of these statements about Microkernel are true? A. The modules run user mode `rightarrow` protection against bugs B. All the layers went in the kernel C. Resist crashing the entire system D. All of the others - ️️A What is the below five statements described? 1. Put t...

Which of the following actions generates an external interrupt? * 1/1 A system call instruction is executed. Division by zero occurs. An input/output operation is completed. A page that does not exist in the main memory is accessed by the virtual storage management. - ️️An input/output operation is completed. Which of the following is not a step in the boot process? * 1/1 The antivirus program checks all files for viruses Configuration and customization settings are checked The op...

_____ are used to model printers, modems, and other devices that accept or output a character stream a. A character special file b. A separate special file c. A block special file d. A pipe special file - ️️a Which of these statements about Monolithic Systems are true? a. A set of service procedures that carry out the system calls b. A set of utility procedures that Help the service procedures c. A main program that invokes the requested service procedure d. All of others - ️️a...

Which OS can provide many services as print, file, Web, email, ect? Select one: A. PC OS B. Server OS C. Mainframe OS D. Multiprocessor OS - ️️B Which of these statements about processes are true? Select one or more: A. A program in execution B. Associated with each process is set of resources such as executable code, data, stack, CPU registers value, and other information needing to run a program C. Process table stores all the information of processes D. Associated with each pr...

Which is not an example of a resource that is commonly time-multiplexed? * 1/1 CPU Graphics accelerator Main memory Network interface - ️️C Consider a computer system that has cache memory, main memory (RAM) and disk, and OS uses virtual memory. It takes 2 nsec to access a byte from the cache, 20 nsec to access a byte from RAM, and 10 msec to access a block of 1000 bytes from the disk. If a book has 1000 pages, each with 50 lines of 80 characters each, How long it will take to elec...

OSG202 EXAM QUESTIONS AND ANSWERS

OSG202 Unit 1-3 Questions And Answers With Verified Solutions The OS is written as a collection of procedures, linked together into a single large executable binary program. Which OS structure is described ? a. MSDOS b. Monochrome c. MonoOS d. MonoKernel ANS a (Multi-choice) The OS is written as a collection of procedures, linked together into a single large executable binary program. Which OS structure is described ? a. Monolithic b. MSDOS c. MonoOS d. MonoKernel ANS ab

OSG202 Complete Questions And Answers With Latest Updates As one proceeds down the memory hierarchy (from inboard memory to offline storage), which of the following conditions is correct? Increasing cost per bit Decreasing access time None of the other choices Increasing capacity ANS D Which is not an example of a resource that is commonly time-multiplexed? * 0/1 CPU Main memory Graphics accelerator Network interface ANS B Which of the following instructions should be allowed o...

OSG202 Rebuild Questions And Answers With Verified Tests QN=1 (6836) A CPU may have multiple execution units, so that can carry out multiple instructions in the same time is called: a. Pipeline b. Superscalar c. Multicore d. None of the other choices ANS B QN=2 (6843) The four main structural elements of a computer system are: a. Processor, Registers, I/O Modules, Main Memory b. Processor, Registers, Main Memory, System Bus c. Processor, Main Memory, I/O Modules, System Bus d. Non...