Computer Science Questions
Explore questions in the Computer Science category that you can ask Spark.E!
Which of the following is appropriate to release page table and pages? *1/1Process creationProcess termination time Page fault timeProcess execution
Which of the following statements about user-level threads and kernel-level threads is correct? *0/1None of the other choicesBoth user-level threads and kernel-level threads can write into each other's memory spaceKernel-level thread scheduling is faster than user-level thread schedulingBoth user-level threads and kernel-level threads use OS services via system calls
A ____ is a portion of a process that can run independently *1/1thread programminiprocesssubprocess
Which of the events that causes the processes to be created, when the operation system creates a new process and runs the next job from the input queue? *0/1Initiation of a batch jobUser request to create a new process System initializationExecution of a process creation system call
Network layer does not provide reliable transmission becauseA. none is correct B. There is no acknowledgment process in the network layerC. It uses acknowledgment for every transmitted packetD. It does not use the sequence number
In Congestion avoidance of TCP congestion control, when timeout occurs, the congestion window _________A. Redeces by halfB. Reduces to 1C. Remains the sameD. None is correct
What is interrupt vector? *1/1Part of memory which contains the addresses of interrupt handlers The addresses of interrupt handlersA signal an I/O device sends to CPUNone of the other choices
Which of the following operating systems is a example of monolithic system? *1/1MS-DOSMac OSUNIXWindows XP
A CPU may have two or more complete processors, so that can carry out multiple threads in the same time is called: *1/1PipelineMulticoreNone of the other choicesSuperscalar
Which of the following actions generates an external interrupt? *1/1A page that does not exist in the main memory is accessed by the virtual storage management.An input/output operation is completed.Division by zero occurs.A system call instruction is executed.
Which is the fastest bus in the IBM PC computer? *0/1PCI (Peripheral Component Interconnect)IDE (Integrated Drive Electronic)ISA (Industry Standard Architecture)USB (Universal Serial BUS)
The operating system structure in which the communication between requesting process and responding process is message passing? *0/1All of the other choices Monolithic SystemsMS - DOSClient - Server Model
The general role of an operating system is to: *1/1Provide a set of services to system users Act as an interface between various computersNone of the other choicesManage files for application programs
The main characteristics of exokernels is: *1/1A subset of the resources is given in user modeThe program, called the exokernel runs in kernel modeExokernels need only keep track of which virtual machine assigned which resourceAll of the other choices
The main bus in the IBM PC computer are: *0/1PCI (Peripheral Component Interconnect)ISA and PCINone of the other choicesISA (Industry Standard Architecture)
Which of the following statements about the CMOS is incorrect? *1/1Is volatileTo contain BIOSTo hold the configuration parametersTo hold the current time and date
An operating system *1/1Manages software resources in a computer systemDeals with complex hardware resources and provides the user a virtual/extended machine that is much easier to deal with than the physical machineManages hardware resources in a computer systemAll of the other choices
What does the virtual machine monitor do? *1/1Does the multiprogrammingProvides sevral virtual machines to the next layer upAll of the other choicesRuns on the bare hardware.
A CPU may have separate fech, decode and execute units, so that can carry out three steps of the three instructions in the same time is called: *1/1PipelineNone of the other choicesSuperscalarMulticore
A special register that contains the address of the next instruction to be fetched is called: *0/1Instruction Register (IR) All of the other choicesProgram Counter (PC)Program Status Word (PSW)