Course -unit1

10 Questions | Total Attempts: 194

SettingsSettingsSettings
Please wait...
Course -unit1

Self assessment Of Unit 1


Questions and Answers
  • 1. 
    The operating system is a set of _______________ that interface between an application program and the hardware.
    • A. 

      computer chips

    • B. 

      Sectors

    • C. 

      System software services

    • D. 

      Binary operation codes

  • 2. 
    Which of the following is NOT an advantage of viewing the system as a set of layers?
    • A. 

      It allows you to see the details and inner workings within an object

    • B. 

      It allows a simplified view of an object

    • C. 

      It allows you to focus on the interfaces between the layers

    • D. 

      It simplifies the view of the system so that it can be better understood

  • 3. 
    A byte consists of
    • A. 

      1 bit

    • B. 

      8 bits

    • C. 

      1 word

    • D. 

      8 word

  • 4. 
    Bytes or words are the basic addressable units of memory. In order for the processor to be able to access the byte or word, it is assigned a unique ________.
    • A. 

      Value

    • B. 

      Address

    • C. 

      Name

    • D. 

      Serial number

  • 5. 
    In the processor, the Instruction Counter contains:
    • A. 

      The data that is being manipulated

    • B. 

      The instruction that is being executed

    • C. 

      The address of the next data item to be fetched

    • D. 

      The address of the next instruction to be fetched

  • 6. 
    Files on a hard disk are stored in one or more
    • A. 

      memory cells

    • B. 

      Channels

    • C. 

      Sectors

    • D. 

      AND gates

  • 7. 
    A hard disk has a directory to store file information. Each directory entry contains the following information about a file:
    • A. 

      The file's size and starting track number

    • B. 

      The file's name and starting track number

    • C. 

      The file's name and starting sector number

    • D. 

      The file's size and starting sector number

  • 8. 
    On a mainframe computer, peripheral devices are connected to the system through a ___________ and a ____________.
    • A. 

      Channel , I/O control unit

    • B. 

      Interface board , buffer

    • C. 

      Channel , interface board

    • D. 

      Interface board, I/O control unit

  • 9. 
    The binary number 1011 is equivalent to which decimal number and which hex number?
    • A. 

      12 decimal and C hex

    • B. 

      11 decimal and C hex

    • C. 

      12 decimal and B hex

    • D. 

      11 decimal and B hex

  • 10. 
    Secondary storage consists of devices such as the hard disk and CD-ROM. Which of the following is NOT a characteristic of secondary storage?
    • A. 

      . It is high capacity; it typically holds much more than main memory

    • B. 

      It is non-volatile

    • C. 

      It is intended for long term storage of files and data

    • D. 

      The computer can execute a program directly on the secondary storage