User programs interact with the kernel through a set of standard(71). They request services to be provided by the kernel. Such services would include accessing a file: open close, read, write, link, or execute a file; starting or(72)accounting records; ch

题目

User programs interact with the kernel through a set of standard(71). They request services to be provided by the kernel. Such services would include accessing a file: open close, read, write, link, or execute a file; starting or(72)accounting records; changing ownership of a file or(73); changing to a new directory; creating,(74), or killing a process; enabling access to hardware devices; and setting limits on system resources. Unix is a multi -user, multi -tasking operating system. You can have many users logged into a system simultaneously, each running many programs. It's the kernel's job to keep each process and user separate and to regulate access to(75), including cpu, memory, disk and other L/O devices.

A．system commands

B．system transfer

C．system calls

D．system rings

相似考题

1.在Windows98的3个核心组件(User、Kerne1 GDI)中，Windows98提供了16位代码的组件仅有( )。A．UserB．Kernel和GDIC．User和GDID．User、GDI和Kernel

2.snmp有五种消息，包括get-request、set-request、get-next-request、get-response、trap，其中由agentr发给manage的有()A.set-requestB.get-responseC.get-next-requestD.trap

3.snmp有五种消息，包括get-request、set-request、get-next-request、get-response、trap，其中由manager发给agent的有()A.get-requestB.set-requestC.get-next-requestD.get-response

4.snmpv1实现的请求/响应原语包括()A.get、getNext、set、trapB.get-next-request、get-response、trapC.get、set、trapD.get-request、set-request

更多“User programs interact with the kernel through a set of standard(71). They request service ”相关问题

  • 第1题：

    snmpv1实现的请求/响应原语包括()。

    A.get-request、set-request、get-next-request、get-response、trap

    B.get、getNext、set、trap

    C.get-request、set-request、get-next-request、get-response

    D.get、set、trap


    参考答案：A

  • 第2题：

    request.setAttribute("user","svse");session.setAttribute("user","bob");使用{user}则显示

    A.null

    B.svse

    C.bob

    D.啥也没有


    正确答案：B

  • 第3题：

    A basic premise of OGSA is that everything is(71)by a service: a network enabled entity that(72)some capability through the exchange of messages. Computational resources, storage resources, networks, programs, databases, and so forth are all(73). This adoption of a uniform. service-oriented model means that all components of the environment are virtual. More specifically, OGSA represents everything as a Grid service: a Web service that conforms(74)a set of conventions and supports standard interfaces for such purposes as lifetime management. This core set of consistent interfaces, from which all Grid services are implemented,(75)the construction of hierarchical, higher-order services that can be treated in a uniform. way across layers of abstraction.

    A．defined

    B．represented

    C．used

    D．passed


    正确答案：B
    解析：OGSA的一个基本前提是任何事务都表示成一个服务：一个网络可达的、通过消息交换提供某些能力的实体。计算资源、存储资源、网络、程序、数据库等都是服务。采用一个统一的面向服务的模型意味着环境中的所有组件都是虚拟的。更明确地说，OGSA将所有事务都表示成一个Grid服务：遵循一套规范并支持为了实现生命周期管理等类似目的而制定的标准接口的Web服务。这些一致接口的核心集，是所有的Grid服务实现的基础，便于高级服务的构造，而高级服务能够跨多个抽象层以一种统一的方式进行处理。

  • 第4题：

    Windows98的核心模块由Kernel、User,______组成。


    正确答案：GDI
    GDI 解析：Windows98操作系统核心模块包括3种主要组件，分别是Kernel，User，　GDI，它们分别有两个16位的和32位的，全都存放在文件夹C：\Windows\Systern中。

  • 第5题：

    pageContext.setAttribute("user","tom");request.setAttribute("user","bob");显示"bob",则可以使用

    A.{request.getAttribute("user")}

    B.{param.user}

    C.{user}

    D.{requestScope.user}


    正确答案：D

  • 第6题：

    在Windows98的3个核心组件(User、Kernel和GDI)中，Windows98提供了16位代码的组件仅有( )

    A．User

    B．Kernel和GDI

    C．User和GDI

    D．User、GDI和Kernel


    正确答案：D
    解析：Windows98的核心模块(也称为系统内核部分)主要由3个组件组成：User、Kernel和GDI。它们分别有16位的和32位的代码。所以选项D是正确的。

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