CPT 104 Midterm
Why is a hard drive with a higher spin rate usually faster?
It reduces the seek time.
What is the result of adding the following 2 binary numbers? 00100100 + 00010100
0111000
If you need to change the PATH variable
Right click on Computer, click on Advanced, and click on the Environment Variables button
data
The raw facts and numbers that are input for a computer
What does the very first bit of an IEEE single-precision floating point number tell you?Actions for What does the very first bit of an IEEE single-precision floating point number tell you
The sign of the whole number
information
The usable output from a computer
8, 10 and Server 2008 are all versions of
Windows
A file with a .zip extension is
a compressed file, which contains other files
UNIX is
a family of similar operating systems
Which of the following is not an output device?
a microphone
A place to plug a device into a system unit is known as
a port
An "interrupt" in an operating system is
a signal to the processor to switch processes
Which of the following is not an input device
a speaker
the registers
act as the "scratch paper" for the instructions that are currently being carried out
A driver is a program that
allows a device to work correctly
If you select Default Programs from the Control Panel, you can
change the program that will open when you double click on a .txt file, for example
When reading a hard disk, as the heads move past a magnetic pattern,
current is induced in one direction or the other
the control unit
determine the order in which the instructions are carried out
At the Linux command prompt, enter ls to
display a list of files in the current directory.
the ALU
execute the additions, subtractions, multiplications, divisions and comparisons
VMS is an operating system for
mainframe computers
To convert binary to decimal going left to right, start with answer=0 and __ for each new bit.
multiply answer by 2 and add the new bit
An operating system provides API's (Application Programming Interfaces), which are
programming units like file open dialogs that can be used in other programs
If your Windows computer won't boot up, you should try
running a system restore
At the Windows command prompt, enter DIR to
see a list of files and directories in the current directory
the cache memory
speed up the transfer of instructions from the RAM to the processor
system unit
the box that contains the motherboard, drives and power supply
If your computer is thrashing,
the disk drive is constantly working because there is not enough RAM and the virtual memory is constantly swapping
What do the second through ninth bits of an IEEE single-precision floating point number tell you?
the exponent
An advantage of a CD over magnetic storage is
the recorded data last longer
Many universities and research organizations used UNIX because
they were given the source code
The use of space on the hard disk to simulate extra RAM is known as
virtual memory
A keyboard shortcut to open Windows Explorer is
windows-E
What is the decimal value of the following binary number? 1.01
1.25
What are the place values for an unsigned 5-bit binary number, in order from left to right?
16, 8, 4, 2, and 1
Kilobyte (KB)
210 or about 1 thousand bytes
Megabyte (MB)
220 or about 1 million bytes
Gigabyte (GB)
230 or about 1 billion bytes
What comes after 23E when counting in hexadecimal?
23F
Terabyte (TB)
240 or about 1 trillion bytes
What is the decimal value of the following unsigned 8-bit binary number? 00101100
44, because 32+8+4=44
How many bits can be represented by a two-digit hexadecimal number?
8
How are ASCII characters represented in the memory of a computer?
As binary numbers
The program in the ROM of the computer that starts up when the computer is turned on is known as the
BIOS
In Windows, the root directory of the hard drive is usually referred to as
C:\
In twos complement, what does complement mean?
Change 0's to 1's and 1's to 0's
Which is an example of a pathname in Windows?
F:\mtc\cpt104\hw5.html
The two kinds of user interfaces are
GUI and command line